阅读说明：本技术 一种耐气候性耐高温超高分子量聚乙烯纤维复合材料及其制备方法 (Weather-resistant high-temperature-resistant ultrahigh molecular weight polyethylene fiber composite material and preparation method thereof ) 是由 张斌 刘芳宇 朱昊宇 于 2020-12-30 设计创作，主要内容包括：本发明公开了一种耐气候性耐高温超高分子量聚乙烯纤维复合材料及其制备方法,将丙烯酸酯橡胶、交联剂、塑化剂、防老剂、硫化剂加入开炼机中共混,得到基体A；将丁腈橡胶、聚氯乙烯加入密炼机中共混,得到基体B；将基体A和基体B加入开炼机中相互混炼均匀,再加入石英砂、白云石共混；继续加入短切超高分子量聚乙烯纤维共混；将共混胶停放24～48h,经返炼后出片,制得本发明的耐气候性耐高温超高分子量聚乙烯纤维复合材料。本发明的制造工艺简单易操作,制得的耐气候性耐高温超高分子量聚乙烯纤维复合材料改善了原有材料的性能,可以具有耐气候性和耐高温性等优异性能,不仅提高了材料的使用寿命还改善了材料原有的缺点。(The invention discloses a weather-resistant high-temperature-resistant ultrahigh molecular weight polyethylene fiber composite material and a preparation method thereof, wherein acrylate rubber, a cross-linking agent, a plasticizer, an anti-aging agent and a vulcanizing agent are added into an open mill for mixing to obtain a matrix A; adding nitrile rubber and polyvinyl chloride into an internal mixer for mixing to obtain a matrix B; adding the matrix A and the matrix B into an open mill, mixing uniformly, and adding quartz sand and dolomite for blending; continuously adding the chopped ultrahigh molecular weight polyethylene fibers for blending; standing the blended rubber for 24-48 h, and performing remilling to obtain the weather-resistant high-temperature-resistant ultrahigh molecular weight polyethylene fiber composite material. The preparation process of the invention is simple and easy to operate, and the prepared weather-resistant high-temperature-resistant ultra-high molecular weight polyethylene fiber composite material improves the performance of the original material, can have excellent performances such as weather resistance, high temperature resistance and the like, not only prolongs the service life of the material, but also improves the original defects of the material.)

1. A preparation method of a weather-resistant high-temperature-resistant ultrahigh molecular weight polyethylene fiber composite material is characterized by comprising the following steps: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

weighing the following raw materials: the rubber material comprises ultrahigh molecular weight polyethylene fibers, nitrile rubber, acrylate rubber, polyvinyl chloride, quartz sand, dolomite, a cross-linking agent, a plasticizer, an anti-aging agent and a vulcanizing agent;

adding acrylate rubber, a cross-linking agent, a plasticizer, an anti-aging agent and a vulcanizing agent into an open mill for mixing to obtain a matrix A;

adding nitrile rubber and polyvinyl chloride into an internal mixer for mixing to obtain a matrix B;

adding the matrix A and the matrix B into an open mill, mixing uniformly, and adding quartz sand and dolomite for blending;

continuously adding the chopped ultrahigh molecular weight polyethylene fibers for blending;

standing the blended rubber for 24-48 h, and performing remilling to obtain the weather-resistant high-temperature-resistant ultrahigh molecular weight polyethylene fiber composite material.

2. The method of preparing the weatherable, high temperature resistant, ultra high molecular weight polyethylene fiber composite of claim 1, wherein: the preparation method comprises the following steps of weighing 30-45 parts of ultra-high molecular weight polyethylene fiber, 15-23 parts of nitrile rubber, 12-17 parts of acrylate rubber, 10-15 parts of polyvinyl chloride, 4-7 parts of quartz sand, 5-10 parts of dolomite, 4-9 parts of a cross-linking agent, 2-5 parts of a plasticizer, 1-2 parts of an anti-aging agent and 2-3 parts of a vulcanizing agent.

3. The method for preparing the weather-resistant high temperature resistant ultra high molecular weight polyethylene fiber composite material according to claim 1 or 2, wherein: the preparation method comprises the following steps of weighing 40 parts of ultra-high molecular weight polyethylene fiber, 20 parts of nitrile rubber, 15 parts of acrylate rubber, 13 parts of polyvinyl chloride, 6 parts of quartz sand, 8 parts of dolomite, 7 parts of a cross-linking agent, 4 parts of a plasticizer, 2 parts of an anti-aging agent and 3 parts of a vulcanizing agent.

4. The method of preparing the weatherable, high temperature resistant, ultra high molecular weight polyethylene fiber composite of claim 3, wherein: the acrylate rubber, the cross-linking agent, the plasticizer, the anti-aging agent and the vulcanizing agent are added into an open mill for blending, and the blending is carried out at the temperature of 80-90 ℃ at the rotating speed of 30-60 r/min for 20 min.

5. The method of preparing the weatherable, high temperature resistant, ultra high molecular weight polyethylene fiber composite of any of claims 1,2 or 4, wherein: the nitrile rubber and the polyvinyl chloride are added into an internal mixer for blending, and the mixture is blended at the temperature of 80-90 ℃, the rotating speed is 30-60 r/min, and the stirring time is 40-50 min.

6. The method of preparing the weatherable, high temperature resistant, ultra high molecular weight polyethylene fiber composite of claim 5, wherein: adding quartz sand and dolomite, blending at 80-90 ℃, wherein the rotating speed is 30-60 r/min, and the stirring time is 20 min.

7. The method for preparing the weather-resistant high temperature resistant ultra high molecular weight polyethylene fiber composite material as claimed in any one of claims 1,2, 4 or 6, wherein: the short-cut ultrahigh molecular weight polyethylene fibers are added and blended, and the mixture is blended at the temperature of 80-90 ℃, the rotating speed is 30-60 r/min, and the stirring time is 20 min.

8. A weather-resistant high-temperature-resistant ultra-high molecular weight polyethylene fiber composite material is characterized in that: the rubber material comprises, by weight, 30-45 parts of ultrahigh molecular weight polyethylene fibers, 15-23 parts of nitrile rubber, 12-17 parts of acrylate rubber, 10-15 parts of polyvinyl chloride, 4-7 parts of quartz sand, 5-10 parts of dolomite, 4-9 parts of a cross-linking agent, 2-5 parts of a plasticizer, 1-2 parts of an anti-aging agent and 2-3 parts of a vulcanizing agent.

9. The weatherable, high temperature resistant, ultra high molecular weight polyethylene fiber composite of claim 8, wherein: the plasticizer is one or more of phthalic acid diester, dioctyl phthalate and dibutyl phthalate.

10. The weatherable, high temperature resistant, ultra high molecular weight polyethylene fiber composite of claim 8 or 9, wherein: the vulcanizing agent is one or more of dithiocarbamate, thiazole, thiuram and latex.

Technical Field

The invention belongs to the technical field of composite fiber materials, and particularly relates to a weather-resistant high-temperature-resistant ultrahigh molecular weight polyethylene fiber composite material and a preparation method thereof.

Background

The ultra-high molecular weight polyethylene fiber is the fiber with the highest specific strength and specific modulus in the world at present, and the molecular weight of the fiber is 100-500 ten thousand. The steel wire has high specific strength and high specific modulus, the specific strength is more than ten times of that of steel wires with the same section, and the specific modulus is only inferior to that of special-grade carbon fibers. The fiber has low density and can float on the water surface. Low elongation at break, high work at break, and strong ability of absorbing energy, thereby having outstanding impact resistance and cut resistance. Resisting ultraviolet radiation, preventing neutrons and gamma rays, high specific energy absorption, low dielectric constant and high electromagnetic wave transmittance. Chemical resistance, wear resistance and longer flex life. However, it has other disadvantages, and high molecular weight polyethylene has the disadvantages of low surface hardness and heat distortion temperature, poor bending strength and poor creep properties, etc. compared with other engineering plastics. This is due to the molecular structure and molecular aggregation morphology of the high molecular weight polyethylene. These problems may cause damage to the material and the material cannot be widely used. Most of the materials used at present are single materials, and have no effects of weather resistance and high temperature resistance.

Disclosure of Invention

This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.

The present invention has been made keeping in mind the above and/or other problems occurring in the prior art.

The invention aims to provide a weather-resistant high-temperature-resistant ultrahigh molecular weight polyethylene fiber composite material and a preparation method thereof.

In order to solve the technical problems, the invention provides the following technical scheme: a process for preparing the weatherable high-temp resistant ultrahigh-molecular polyethylene fibre composite material includes such steps as preparing the composite material,

weighing the following raw materials: the rubber material comprises ultrahigh molecular weight polyethylene fibers, nitrile rubber, acrylate rubber, polyvinyl chloride, quartz sand, dolomite, a cross-linking agent, a plasticizer, an anti-aging agent and a vulcanizing agent;

adding acrylate rubber, a cross-linking agent, a plasticizer, an anti-aging agent and a vulcanizing agent into an open mill for mixing to obtain a matrix A;

adding nitrile rubber and polyvinyl chloride into an internal mixer for mixing to obtain a matrix B;

adding the matrix A and the matrix B into an open mill, mixing uniformly, and adding quartz sand and dolomite for blending;

continuously adding the chopped ultrahigh molecular weight polyethylene fibers for blending;

standing the blended rubber for 24-48 h, and performing remilling to obtain the weather-resistant high-temperature-resistant ultrahigh molecular weight polyethylene fiber composite material.

As a preferable scheme of the preparation method of the weather-resistant high-temperature-resistant ultrahigh molecular weight polyethylene fiber composite material, the method comprises the following steps: the preparation method comprises the following steps of weighing 30-45 parts of ultra-high molecular weight polyethylene fiber, 15-23 parts of nitrile rubber, 12-17 parts of acrylate rubber, 10-15 parts of polyvinyl chloride, 4-7 parts of quartz sand, 5-10 parts of dolomite, 4-9 parts of a cross-linking agent, 2-5 parts of a plasticizer, 1-2 parts of an anti-aging agent and 2-3 parts of a vulcanizing agent.

As a preferable scheme of the preparation method of the weather-resistant high-temperature-resistant ultrahigh molecular weight polyethylene fiber composite material, the method comprises the following steps: the preparation method comprises the following steps of weighing 40 parts of ultra-high molecular weight polyethylene fiber, 20 parts of nitrile rubber, 15 parts of acrylate rubber, 13 parts of polyvinyl chloride, 6 parts of quartz sand, 8 parts of dolomite, 7 parts of a cross-linking agent, 4 parts of a plasticizer, 2 parts of an anti-aging agent and 3 parts of a vulcanizing agent.

As a preferable scheme of the preparation method of the weather-resistant high-temperature-resistant ultrahigh molecular weight polyethylene fiber composite material, the method comprises the following steps: the acrylate rubber, the cross-linking agent, the plasticizer, the anti-aging agent and the vulcanizing agent are added into an open mill for blending, and the blending is carried out at the temperature of 80-90 ℃ at the rotating speed of 30-60 r/min for 20 min.

As a preferable scheme of the preparation method of the weather-resistant high-temperature-resistant ultrahigh molecular weight polyethylene fiber composite material, the method comprises the following steps: the nitrile rubber and the polyvinyl chloride are added into an internal mixer for blending, and the mixture is blended at the temperature of 80-90 ℃, the rotating speed is 30-60 r/min, and the stirring time is 40-50 min.

As a preferable scheme of the preparation method of the weather-resistant high-temperature-resistant ultrahigh molecular weight polyethylene fiber composite material, the method comprises the following steps: adding quartz sand and dolomite, blending at 80-90 ℃, wherein the rotating speed is 30-60 r/min, and the stirring time is 20 min.

As a preferable scheme of the preparation method of the weather-resistant high-temperature-resistant ultrahigh molecular weight polyethylene fiber composite material, the method comprises the following steps: the short-cut ultrahigh molecular weight polyethylene fibers are added and blended, and the mixture is blended at the temperature of 80-90 ℃, the rotating speed is 30-60 r/min, and the stirring time is 20 min.

The invention also aims to provide a weather-resistant high-temperature-resistant ultrahigh molecular weight polyethylene fiber composite material which comprises, by weight, 30-45 parts of ultrahigh molecular weight polyethylene fibers, 15-23 parts of nitrile rubber, 12-17 parts of acrylate rubber, 10-15 parts of polyvinyl chloride, 4-7 parts of quartz sand, 5-10 parts of dolomite, 4-9 parts of a cross-linking agent, 2-5 parts of a plasticizer, 1-2 parts of an anti-aging agent and 2-3 parts of a vulcanizing agent.

As a preferable scheme of the weather-resistant high temperature-resistant ultrahigh molecular weight polyethylene fiber composite material, the composite material comprises the following components: the plasticizer is one or more of phthalic acid diester, dioctyl phthalate and dibutyl phthalate.

As a preferable scheme of the weather-resistant high temperature-resistant ultrahigh molecular weight polyethylene fiber composite material, the composite material comprises the following components: the vulcanizing agent is one or more of dithiocarbamate, thiazole, thiuram and latex.

Compared with the prior art, the invention has the following beneficial effects:

(1) the raw materials adopted by the invention are all natural grade raw materials, do not contain strong acid and strong alkali, are non-toxic and harmless, and accord with the concept of green environmental protection.

(2) The ultra-high molecular weight polyethylene fiber has a plurality of excellent characteristics, shows great advantages in all aspects, plays a role in playing a role in weight and plays an important role in the invention.

(3) The nitrile rubber and the polyvinyl chloride are blended, so that the ozone resistance of the polyvinyl chloride and the oil resistance and the crosslinkability of the nitrile rubber are both achieved, the ozone resistance, the weather-proof and aging-resistant performance are obviously improved, and the tensile strength, the stress at definite elongation, the tear resistance, the heat resistance and the flame resistance are improved; the performances of oil resistance, fuel oil resistance, chemical medicine resistance and the like are improved.

(4) The quartz sand and the dolomite which are adopted by the invention are natural high-temperature resistant refractory materials, have high hardness, good brittleness and good chemical corrosion resistance, play an important role in the invention and simultaneously accord with the concept of environmental protection.

(5) The invention has wide application range, the application range of the invented composite material is very wide, and the weatherability and the high temperature resistance are also very good.

(6) All the raw materials are mutually matched and interacted, the effect that one is added and one is more than two is reflected, the application range of the composite material can be enlarged, and the effect of improving the performance is achieved to a certain extent.

(7) The method is simple to operate, high in practicability and capable of providing good economic benefits.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:

FIG. 1 is a graph comparing the results of the weathering test and the high temperature test of examples 1 to 4 of the present invention and comparative examples 1 to 10.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, specific embodiments thereof are described in detail below with reference to examples of the specification.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Example 1

(1) Weighing the following raw materials in parts by weight: 30 parts of ultrahigh molecular weight polyethylene fiber, 15 parts of nitrile rubber, 12 parts of acrylate rubber, 10 parts of polyvinyl chloride, 4 parts of quartz sand, 5 parts of dolomite, 4 parts of a cross-linking agent, 2 parts of a plasticizer, 1 part of an anti-aging agent and 2 parts of a vulcanizing agent; the plasticizer comprises phthalic acid diester, dioctyl phthalate and dibutyl phthalate in a mass ratio of 1:1: 1; the cross-linking agent is sodium trimetaphosphate; the anti-aging agent is anti-aging agent AW (6-ethoxy-2, 2, 4-trimethyl-1, 2-quinoline dioxide); the vulcanizing agent is sulfur;

(2) adding 12 parts of acrylate rubber, 4 parts of cross-linking agent, 2 parts of plasticizer, 1 part of anti-aging agent and 2 parts of vulcanizing agent into an open mill, blending at 85 ℃, stirring for 20 minutes at 50 revolutions per minute, and blending to obtain a matrix A;

(3) adding 15 parts of nitrile rubber and 10 parts of polyvinyl chloride into an internal mixer, blending at 85 ℃, and obtaining a matrix B after complete mixing at 50 r/min for 45 min;

(4) mixing the blended matrix A and the blended matrix B in an open mill uniformly, adding 4 parts of quartz sand and 5 parts of dolomite, blending at 85 ℃, stirring at 50 revolutions per minute for 20 minutes;

(5) continuously adding 30 parts of chopped ultrahigh molecular weight polyethylene fibers into an open mill, blending at 85 ℃, stirring for 20 minutes at 50 revolutions per minute;

(6) standing the blended rubber for 36h, performing remilling, discharging, and preparing a standard test piece according to determined pressure and time to obtain a sample.

Example 2

(1) Weighing the following raw materials in parts by weight: 35 parts of ultrahigh molecular weight polyethylene fiber, 17 parts of nitrile rubber, 14 parts of acrylate rubber, 11 parts of polyvinyl chloride, 5 parts of quartz sand, 7 parts of dolomite, 6 parts of a cross-linking agent, 3 parts of a plasticizer, 1 part of an anti-aging agent and 2 parts of a vulcanizing agent; the plasticizer comprises phthalic acid diester, dioctyl phthalate and dibutyl phthalate in a mass ratio of 1:1: 1; the cross-linking agent is sodium trimetaphosphate; the anti-aging agent is anti-aging agent AW (6-ethoxy-2, 2, 4-trimethyl-1, 2-quinoline dioxide); the vulcanizing agent is sulfur;

(2) adding 14 parts of acrylate rubber, 6 parts of cross-linking agent, 3 parts of plasticizer, 1 part of anti-aging agent and 2 parts of vulcanizing agent into an open mill, blending at 85 ℃, stirring for 20 minutes at 50 revolutions per minute, and blending to obtain a matrix A;

(3) adding 17 parts of nitrile rubber and 11 parts of polyvinyl chloride into an internal mixer, blending at 85 ℃, and obtaining a matrix B after complete mixing at 50 revolutions per minute for 45 minutes;

(4) mixing the blended matrix A and the matrix B in an open mill uniformly, adding 5 parts of quartz sand and 7 parts of dolomite, blending at 85 ℃, stirring at 50 revolutions per minute for 20 minutes;

(5) continuously adding 35 parts of chopped ultrahigh molecular weight polyethylene fiber into an open mill, blending at 85 ℃, stirring for 20 minutes at 50 revolutions per minute;

(6) standing the blended rubber for 36h, performing remilling, discharging, and preparing a standard test piece according to determined pressure and time to obtain a sample.

Example 3

(1) Weighing the following raw materials in parts by weight: 40 parts of ultrahigh molecular weight polyethylene fiber, 20 parts of nitrile rubber, 15 parts of acrylate rubber, 13 parts of polyvinyl chloride, 6 parts of quartz sand, 8 parts of dolomite, 7 parts of a cross-linking agent, 4 parts of a plasticizer, 2 parts of an anti-aging agent and 3 parts of a vulcanizing agent; the plasticizer comprises phthalic acid diester, dioctyl phthalate and dibutyl phthalate in a mass ratio of 1:1: 1; the cross-linking agent is sodium trimetaphosphate; the anti-aging agent is anti-aging agent AW (6-ethoxy-2, 2, 4-trimethyl-1, 2-quinoline dioxide); the vulcanizing agent is sulfur;

(2) adding 15 parts of acrylate rubber, 7 parts of cross-linking agent, 4 parts of plasticizer, 2 parts of anti-aging agent and 3 parts of vulcanizing agent into an open mill, blending at 85 ℃, stirring for 20 minutes at 50 revolutions per minute, and blending to obtain a matrix A;

(3) adding 20 parts of nitrile rubber and 13 parts of polyvinyl chloride into an internal mixer, blending at 85 ℃, and obtaining a matrix B after complete mixing at 50 r/min for 45 min;

(4) mixing the blended matrix A and the blended matrix B in an open mill uniformly, adding 6 parts of quartz sand and 8 parts of dolomite, blending at 85 ℃, stirring at 50 revolutions per minute for 20 minutes;

(5) continuously adding 40 parts of chopped ultrahigh molecular weight polyethylene fiber into an open mill, blending at 85 ℃, stirring for 20 minutes at 50 revolutions per minute;

(6) standing the blended rubber for 36h, performing remilling, discharging, and preparing a standard test piece according to determined pressure and time to obtain a sample.

Example 4

(1) Weighing the following raw materials in parts by weight: 45 parts of ultrahigh molecular weight polyethylene fiber, 23 parts of nitrile rubber, 17 parts of acrylate rubber, 15 parts of polyvinyl chloride, 7 parts of quartz sand, 10 parts of dolomite, 9 parts of a cross-linking agent, 5 parts of a plasticizer, 2 parts of an anti-aging agent and 3 parts of a vulcanizing agent; the plasticizer comprises phthalic acid diester, dioctyl phthalate and dibutyl phthalate in a mass ratio of 1:1: 1; the cross-linking agent is sodium trimetaphosphate; the anti-aging agent is anti-aging agent AW (6-ethoxy-2, 2, 4-trimethyl-1, 2-quinoline dioxide); the vulcanizing agent is sulfur;

(2) adding 17 parts of acrylate rubber, 9 parts of cross-linking agent, 5 parts of plasticizer, 2 parts of anti-aging agent and 3 parts of vulcanizing agent into an open mill, blending at 85 ℃, stirring for 20 minutes at 50 revolutions per minute, and blending to obtain a matrix A;

(3) adding 23 parts of nitrile rubber and 15 parts of polyvinyl chloride into an internal mixer, blending at 85 ℃, and obtaining a matrix B after complete mixing at 50 revolutions per minute for 45 minutes;

(4) mixing the blended matrix A and the matrix B in an open mill uniformly, adding 7 parts of quartz sand and 10 parts of dolomite, blending at 85 ℃, stirring at 50 revolutions per minute for 20 minutes;

(5) continuously adding 45 parts of chopped ultrahigh molecular weight polyethylene fiber into an open mill, blending at 85 ℃, stirring for 20 minutes at 50 revolutions per minute;

(6) standing the blended rubber for 36h, performing remilling, discharging, and preparing a standard test piece according to determined pressure and time to obtain a sample.

Comparative example 1

(1) Weighing the following raw materials in parts by weight: 40 parts of ultrahigh molecular weight polyethylene fiber, 15 parts of acrylate rubber, 13 parts of polyvinyl chloride, 6 parts of quartz sand, 8 parts of dolomite, 7 parts of a cross-linking agent, 4 parts of a plasticizer, 2 parts of an anti-aging agent and 3 parts of a vulcanizing agent; the plasticizer comprises phthalic acid diester, dioctyl phthalate and dibutyl phthalate in a mass ratio of 1:1: 1; the cross-linking agent is sodium trimetaphosphate; the anti-aging agent is anti-aging agent AW (6-ethoxy-2, 2, 4-trimethyl-1, 2-quinoline dioxide); the vulcanizing agent is sulfur;

(2) adding 15 parts of acrylate rubber, 7 parts of cross-linking agent, 4 parts of plasticizer, 2 parts of anti-aging agent and 3 parts of vulcanizing agent into an open mill, blending at 85 ℃, stirring for 20 minutes at 50 revolutions per minute, and blending to obtain a matrix A;

(3) adding 13 parts of polyvinyl chloride into an internal mixer, blending at 85 ℃, and waiting for complete mixing at 50 revolutions per minute for 40-50 minutes;

(4) mixing the blended matrix A and the blended matrix B in an open mill uniformly, adding 6 parts of quartz sand and 8 parts of dolomite, blending at 85 ℃, stirring at 50 revolutions per minute for 20 minutes;

(5) continuously adding 40 parts of chopped ultrahigh molecular weight polyethylene fiber into an open mill, blending at 85 ℃, stirring for 20 minutes at 50 revolutions per minute;

(6) standing the blended rubber for 36h, performing remilling, discharging, and preparing a standard test piece according to determined pressure and time to obtain a sample.

Comparative example 2

(1) Weighing the following raw materials in parts by weight: 40 parts of ultrahigh molecular weight polyethylene fiber, 20 parts of nitrile rubber, 13 parts of polyvinyl chloride, 6 parts of quartz sand, 8 parts of dolomite, 7 parts of a cross-linking agent, 4 parts of a plasticizer, 2 parts of an anti-aging agent and 3 parts of a vulcanizing agent; the plasticizer comprises phthalic acid diester, dioctyl phthalate and dibutyl phthalate in a mass ratio of 1:1: 1; the cross-linking agent is sodium trimetaphosphate; the anti-aging agent is anti-aging agent AW (6-ethoxy-2, 2, 4-trimethyl-1, 2-quinoline dioxide); the vulcanizing agent is sulfur;

(2) adding 7 parts of cross-linking agent, 4 parts of plasticizer, 2 parts of anti-aging agent and 3 parts of vulcanizing agent into an open mill, blending at 85 ℃, stirring at 50 revolutions per minute for 20 minutes, and blending to obtain a matrix A;

(3) adding 20 parts of nitrile rubber and 13 parts of polyvinyl chloride into an internal mixer, blending at 85 ℃, and obtaining a matrix B after complete mixing at 50 r/min for 45 min;

(4) mixing the blended matrix A and the blended matrix B in an open mill uniformly, adding 6 parts of quartz sand and 8 parts of dolomite, blending at 85 ℃, stirring at 50 revolutions per minute for 20 minutes;

(5) continuously adding 40 parts of chopped ultrahigh molecular weight polyethylene fiber into an open mill, blending at 85 ℃, stirring for 20 minutes at 50 revolutions per minute;

(6) standing the blended rubber for 36h, performing remilling, discharging, and preparing a standard test piece according to determined pressure and time to obtain a sample.

Comparative example 3

(1) Weighing the following raw materials in parts by weight: 40 parts of ultrahigh molecular weight polyethylene fiber, 20 parts of nitrile rubber, 15 parts of acrylate rubber, 6 parts of quartz sand, 8 parts of dolomite, 7 parts of a cross-linking agent, 4 parts of a plasticizer, 2 parts of an anti-aging agent and 3 parts of a vulcanizing agent; the plasticizer comprises phthalic acid diester, dioctyl phthalate and dibutyl phthalate in a mass ratio of 1:1: 1; the cross-linking agent is sodium trimetaphosphate; the anti-aging agent is anti-aging agent AW (6-ethoxy-2, 2, 4-trimethyl-1, 2-quinoline dioxide); the vulcanizing agent is sulfur;

(2) adding 15 parts of acrylate rubber, 7 parts of cross-linking agent, 4 parts of plasticizer, 2 parts of anti-aging agent and 3 parts of vulcanizing agent into an open mill, blending at 85 ℃, stirring for 20 minutes at 50 revolutions per minute, and blending to obtain a matrix A;

(3) adding 20 parts of nitrile rubber into an internal mixer, blending at 85 ℃, and obtaining a matrix B after complete mixing at 50 r/min for 45 min;

(4) mixing the blended matrix A and the blended matrix B in an open mill uniformly, adding 6 parts of quartz sand and 8 parts of dolomite, blending at 85 ℃, stirring at 50 revolutions per minute for 20 minutes;

(5) continuously adding 40 parts of chopped ultrahigh molecular weight polyethylene fiber into an open mill, blending at 85 ℃, stirring for 20 minutes at 50 revolutions per minute;

(6) standing the blended rubber for 36h, performing remilling, discharging, and preparing a standard test piece according to determined pressure and time to obtain a sample.

Comparative example 4

(1) Weighing the following raw materials in parts by weight: 40 parts of ultrahigh molecular weight polyethylene fiber, 13 parts of polyvinyl chloride, 6 parts of quartz sand, 8 parts of dolomite, 7 parts of a crosslinking agent, 4 parts of a plasticizer, 2 parts of an anti-aging agent and 3 parts of a vulcanizing agent; the plasticizer comprises phthalic acid diester, dioctyl phthalate and dibutyl phthalate in a mass ratio of 1:1: 1; the cross-linking agent is sodium trimetaphosphate; the anti-aging agent is anti-aging agent AW (6-ethoxy-2, 2, 4-trimethyl-1, 2-quinoline dioxide); the vulcanizing agent is sulfur;

(2) adding 7 parts of cross-linking agent, 4 parts of plasticizer, 2 parts of anti-aging agent and 3 parts of vulcanizing agent into an open mill, blending at 85 ℃, stirring at 50 revolutions per minute for 20 minutes, and blending to obtain a matrix A;

(3) adding 13 parts of polyvinyl chloride into an internal mixer, blending at 85 ℃, and mixing completely at 50 r/min for 45 min to obtain a matrix B;

(4) mixing the blended matrix A and the blended matrix B in an open mill uniformly, adding 6 parts of quartz sand and 8 parts of dolomite, blending at 85 ℃, stirring at 50 revolutions per minute for 20 minutes;

(5) continuously adding 40 parts of chopped ultrahigh molecular weight polyethylene fiber into an open mill, blending at 85 ℃, stirring for 20 minutes at 50 revolutions per minute;

(6) standing the blended rubber for 36h, performing remilling, discharging, and preparing a standard test piece according to determined pressure and time to obtain a sample.

Comparative example 5

(1) Weighing the following raw materials in parts by weight: 40 parts of ultrahigh molecular weight polyethylene fiber, 15 parts of acrylate rubber, 6 parts of quartz sand, 8 parts of dolomite, 7 parts of a crosslinking agent, 4 parts of a plasticizer, 2 parts of an anti-aging agent and 3 parts of a vulcanizing agent; the plasticizer comprises phthalic acid diester, dioctyl phthalate and dibutyl phthalate in a mass ratio of 1:1: 1; the cross-linking agent is sodium trimetaphosphate; the anti-aging agent is anti-aging agent AW (6-ethoxy-2, 2, 4-trimethyl-1, 2-quinoline dioxide); the vulcanizing agent is sulfur;

(2) adding 15 parts of acrylate rubber, 7 parts of cross-linking agent, 4 parts of plasticizer, 2 parts of anti-aging agent and 3 parts of vulcanizing agent into an open mill, blending at 85 ℃, stirring for 20 minutes at 50 revolutions per minute, and blending to obtain a matrix A;

(3) adding 6 parts of quartz sand and 8 parts of dolomite into an open mill, blending at 85 ℃, stirring for 20 minutes at 50 revolutions per minute;

(4) continuously adding 40 parts of chopped ultrahigh molecular weight polyethylene fiber into an open mill, blending at 85 ℃, stirring for 20 minutes at 50 revolutions per minute;

(5) standing the blended rubber for 36h, performing remilling, discharging, and preparing a standard test piece according to determined pressure and time to obtain a sample.

Comparative example 6

(1) Weighing the following raw materials in parts by weight: 40 parts of ultrahigh molecular weight polyethylene fiber, 20 parts of nitrile rubber, 6 parts of quartz sand, 8 parts of dolomite, 7 parts of a crosslinking agent, 4 parts of a plasticizer, 2 parts of an anti-aging agent and 3 parts of a vulcanizing agent; the plasticizer comprises phthalic acid diester, dioctyl phthalate and dibutyl phthalate in a mass ratio of 1:1: 1; the cross-linking agent is sodium trimetaphosphate; the anti-aging agent is anti-aging agent AW (6-ethoxy-2, 2, 4-trimethyl-1, 2-quinoline dioxide); the vulcanizing agent is sulfur;

(2) adding 7 parts of cross-linking agent, 4 parts of plasticizer, 2 parts of anti-aging agent and 3 parts of vulcanizing agent into an open mill, blending at 85 ℃, stirring at 50 revolutions per minute for 20 minutes, and blending to obtain a matrix A;

(3) adding 20 parts of nitrile rubber into an internal mixer, blending at 85 ℃, and obtaining a matrix B after complete mixing at 50 r/min for 45 min;

(4) mixing the blended matrix A and the blended matrix B in an open mill uniformly, adding 6 parts of quartz sand and 8 parts of dolomite, blending at 85 ℃, stirring at 50 revolutions per minute for 20 minutes;

(5) continuously adding 40 parts of chopped ultrahigh molecular weight polyethylene fiber into an open mill, blending at 85 ℃, stirring for 20 minutes at 50 revolutions per minute;

(6) standing the blended rubber for 36h, performing remilling, discharging, and preparing a standard test piece according to determined pressure and time to obtain a sample.

Comparative example 7

(1) Weighing the following raw materials in parts by weight: 40 parts of ultrahigh molecular weight polyethylene fiber, 6 parts of quartz sand, 8 parts of dolomite, 7 parts of a cross-linking agent, 4 parts of a plasticizer, 2 parts of an anti-aging agent and 3 parts of a vulcanizing agent; the plasticizer comprises phthalic acid diester, dioctyl phthalate and dibutyl phthalate in a mass ratio of 1:1: 1; the cross-linking agent is sodium trimetaphosphate; the anti-aging agent is anti-aging agent AW (6-ethoxy-2, 2, 4-trimethyl-1, 2-quinoline dioxide); the vulcanizing agent is sulfur;

(2) adding 7 parts of cross-linking agent, 4 parts of plasticizer, 2 parts of anti-aging agent and 3 parts of vulcanizing agent into an open mill, blending at 85 ℃, stirring at 50 revolutions per minute for 20 minutes;

(3) adding 6 parts of quartz sand and 8 parts of dolomite into an open mill, blending at 85 ℃, stirring for 20 minutes at 50 revolutions per minute;

(4) continuously adding 40 parts of chopped ultrahigh molecular weight polyethylene fiber into an open mill, blending at 85 ℃, stirring for 20 minutes at 50 revolutions per minute;

(5) standing the blended rubber for 36h, performing remilling, discharging, and preparing a standard test piece according to determined pressure and time to obtain a sample.

Comparative example 8

(1) Weighing the following raw materials in parts by weight: 40 parts of ultrahigh molecular weight polyethylene fiber, 20 parts of nitrile rubber, 15 parts of acrylate rubber, 13 parts of polyvinyl chloride, 8 parts of dolomite, 7 parts of a cross-linking agent, 4 parts of a plasticizer, 2 parts of an anti-aging agent and 3 parts of a vulcanizing agent; the plasticizer comprises phthalic acid diester, dioctyl phthalate and dibutyl phthalate in a mass ratio of 1:1: 1; the cross-linking agent is sodium trimetaphosphate; the anti-aging agent is anti-aging agent AW (6-ethoxy-2, 2, 4-trimethyl-1, 2-quinoline dioxide); the vulcanizing agent is sulfur;

(2) adding 15 parts of acrylate rubber, 7 parts of cross-linking agent, 4 parts of plasticizer, 2 parts of anti-aging agent and 3 parts of vulcanizing agent into an open mill, blending at 85 ℃, stirring for 20 minutes at 50 revolutions per minute, and blending to obtain a matrix A;

(3) adding 20 parts of nitrile rubber and 13 parts of polyvinyl chloride into an internal mixer, blending at 85 ℃, and obtaining a matrix B after complete mixing at 50 r/min for 45 min;

(4) mixing the blended matrix A and the matrix B in an open mill uniformly, adding 8 parts of dolomite, blending at 85 ℃ for 50 r/min, and stirring for 20 min;

(5) continuously adding 40 parts of chopped ultrahigh molecular weight polyethylene fiber into an open mill, blending at 85 ℃, stirring for 20 minutes at 50 revolutions per minute;

(6) standing the blended rubber for 36h, performing remilling, discharging, and preparing a standard test piece according to determined pressure and time to obtain a sample.

Comparative example 9

(1) Weighing the following raw materials in parts by weight: 40 parts of ultrahigh molecular weight polyethylene fiber, 20 parts of nitrile rubber, 15 parts of acrylate rubber, 13 parts of polyvinyl chloride, 6 parts of quartz sand, 7 parts of a cross-linking agent, 4 parts of a plasticizer, 2 parts of an anti-aging agent and 3 parts of a vulcanizing agent; the plasticizer comprises phthalic acid diester, dioctyl phthalate and dibutyl phthalate in a mass ratio of 1:1: 1; the cross-linking agent is sodium trimetaphosphate; the anti-aging agent is anti-aging agent AW (6-ethoxy-2, 2, 4-trimethyl-1, 2-quinoline dioxide); the vulcanizing agent is sulfur;

(2) adding 15 parts of acrylate rubber, 7 parts of cross-linking agent, 4 parts of plasticizer, 2 parts of anti-aging agent and 3 parts of vulcanizing agent into an open mill, blending at 85 ℃, stirring for 20 minutes at 50 revolutions per minute, and blending to obtain a matrix A;

(3) adding 20 parts of nitrile rubber and 13 parts of polyvinyl chloride into an internal mixer, blending at 85 ℃, and obtaining a matrix B after complete mixing at 50 r/min for 45 min;

(4) mixing the blended matrix A and the matrix B in an open mill uniformly, adding 6 parts of quartz sand, blending at 85 ℃ for 50 r/min, and stirring for 20 min;

(5) continuously adding 40 parts of chopped ultrahigh molecular weight polyethylene fiber into an open mill, blending at 85 ℃, stirring for 20 minutes at 50 revolutions per minute;

(6) standing the blended rubber for 36h, performing remilling, discharging, and preparing a standard test piece according to determined pressure and time to obtain a sample.

Comparative example 10

(1) Weighing the following raw materials in parts by weight: 40 parts of ultrahigh molecular weight polyethylene fiber, 20 parts of nitrile rubber, 15 parts of acrylate rubber, 13 parts of polyvinyl chloride, 7 parts of a crosslinking agent, 4 parts of a plasticizer, 2 parts of an anti-aging agent and 3 parts of a vulcanizing agent; the plasticizer comprises phthalic acid diester, dioctyl phthalate and dibutyl phthalate in a mass ratio of 1:1: 1; the cross-linking agent is sodium trimetaphosphate; the anti-aging agent is anti-aging agent AW (6-ethoxy-2, 2, 4-trimethyl-1, 2-quinoline dioxide); the vulcanizing agent is sulfur;

(2) adding 15 parts of acrylate rubber, 7 parts of cross-linking agent, 4 parts of plasticizer, 2 parts of anti-aging agent and 3 parts of vulcanizing agent into an open mill, blending at 85 ℃, stirring for 20 minutes at 50 revolutions per minute, and blending to obtain a matrix A;

(3) adding 20 parts of nitrile rubber and 13 parts of polyvinyl chloride into an internal mixer, blending at 85 ℃, and obtaining a matrix B after complete mixing at 50 r/min for 45 min;

(4) mixing the blended matrix A and the blended matrix B in an open mill uniformly, continuously adding 40 parts of chopped ultrahigh molecular weight polyethylene fibers, blending at 85 ℃, stirring at 50 revolutions per minute for 20 minutes;

(5) standing the blended rubber for 36h, performing remilling, discharging, and preparing a standard test piece according to determined pressure and time to obtain a sample.

Performance testing

14 pieces of fibrous materials having completely uniform shapes and sizes were prepared from the samples of examples 1 to 4 and comparative examples 1 to 10, respectively.

The test method comprises the following steps:

firstly, carrying out artificial weather aging test on 14 pieces of composite materials, namely carrying out weather resistance test on test samples by using an aging box to simulate some important factors of natural environment conditions in a laboratory, such as sunlight, temperature, humidity, rainfall and the like. The method obtains a test result by artificially simulating the action of light, water and temperature in natural climate on a sample; and the weather resistance test period can be shortened by strengthening the effect of one or more factors in natural climate, thereby obtaining the effect of accelerating the test process. Because the test condition is controllable, the repeatability of the test is also ensured.

② carrying out high temperature resistance test on 14 pieces of fiber material, and extracting 50g and 5g of each short fiber sample. After fibers are manually opened, bundled fibers are removed, so that test samples are all single dispersed fibers, about 2g fibers and 0.2g fibers are weighed, and identification is made. 0.1g to 0.2g of fibers were drawn out from 2g of the sample, and the breaking strength of the test sample was measured in accordance with the requirements of GB/T14337. The oven was heated to 280 ℃ with constant temperature air blast. And flatly paving the rest two groups of samples in a metal aluminum thin box with a mark, wherein the thickness of the samples is less than 1cm in a fluffy state. And (5) horizontally placing the metal aluminum thin box in the middle of the constant-temperature air-blast drying box. And starting timing when the temperature rises to the set temperature again. After keeping the temperature for 24h, the sample is taken out and cooled to room temperature, and the breaking strength is measured according to the requirements of GB/T14337.

The breaking strength retention rate lambda of the fiber after high-temperature treatment is calculated according to the following formula:

in the formula: λ is fiber breaking strength retention after treatment, in (%); f. of₁Average breaking strength of untreated fibers in (cN); f. of₂The average breaking strength of the treated fibers is given in (cN).

The higher the breaking strength retention, the better the high temperature resistance of the fiber.

The results of the weathering test and the high temperature test of examples 1 to 4 and comparative examples 1 to 10 are shown in FIG. 1.

As can be seen from the data in fig. 1, in examples 1 to 4, the rubber composition includes three components, namely nitrile rubber, acrylate rubber and polyvinyl chloride, and the aging resistance is good, especially, in example 3, the optimal aging resistance is achieved under the mixture ratio of nitrile rubber, acrylate rubber and polyvinyl chloride;

one component of nitrile rubber, acrylate rubber and polyvinyl chloride is respectively lacked in the comparative examples 1-3, so that the ageing resistance of the rubber is reduced to some extent; in comparative examples 4-6, two components of nitrile rubber, acrylate rubber and polyvinyl chloride are respectively deleted, the aging resistance is obviously reduced, and the reduction range of the performance is larger than the sum of the reduction ranges of the performances of the components which are deleted; comparative example 7, in which all the components of nitrile rubber, acrylate rubber and polyvinyl chloride were missing, had the worst aging resistance; therefore, the three components of the nitrile rubber, the acrylate rubber and the polyvinyl chloride have synergistic effect.

As can be seen from the data in fig. 1, in examples 1 to 4, the two components including quartz sand and dolomite have good high temperature resistance, and especially, in example 3, the optimal high temperature resistance effect is achieved by the ratio of quartz sand to dolomite;

one component is lost in comparative examples 8-9, so that the high-temperature resistance is reduced; the two components are deleted in the comparative example 10, the high-temperature resistance performance is obviously reduced, and the reduction range of the performance is larger than the sum of the performance reduction ranges of the components which are deleted; therefore, a synergistic effect is generated between the quartz sand and the dolomite.

It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.