阅读说明：本技术 一种低光泽度聚氯乙烯材料及其制备方法、应用 (Low-glossiness polyvinyl chloride material and preparation method and application thereof ) 是由 李忠虎 罗明友 谢海生 于 2020-12-16 设计创作，主要内容包括：本发明适用于材料技术领域,提供了一种低光泽度聚氯乙烯材料及其制备方法、应用,其中,所述低光泽度聚氯乙烯材料包括以下重量份数的原料：聚氯乙烯树脂80～100份、稳定剂1～10份、增塑剂4～15份、加工助剂0.8～5份、改质剂4～15份、消光剂0～5.5份以及润滑剂0.5～5份。本发明通过稳定剂、增塑剂、加工助剂、改质剂、消光剂以及润滑剂各原料的合理配比,配合特定种类的聚氯乙烯树脂,所得到的低光泽度聚氯乙烯材料,不仅易于加工成型、且具有较为优异力学性能,且低光泽度,耐温以及成本低；另外,通过消光剂的加入可进一步降低材料光泽度的同时,进一步提高本发明聚氯乙烯材料机械力学性能,具有很好的经济效益。(The invention is applicable to the technical field of materials, and provides a low-glossiness polyvinyl chloride material, and a preparation method and application thereof, wherein the low-glossiness polyvinyl chloride material comprises the following raw materials in parts by weight: 80-100 parts of polyvinyl chloride resin, 1-10 parts of stabilizer, 4-15 parts of plasticizer, 0.8-5 parts of processing aid, 4-15 parts of modifier, 0-5.5 parts of flatting agent and 0.5-5 parts of lubricant. According to the invention, through the reasonable proportion of the raw materials including the stabilizer, the plasticizer, the processing aid, the modifier, the flatting agent and the lubricant and the matching of the specific polyvinyl chloride resin, the obtained low-gloss polyvinyl chloride material is easy to process and form, has excellent mechanical properties, low gloss, temperature resistance and low cost; in addition, the gloss of the material can be further reduced by adding the flatting agent, and the mechanical property of the polyvinyl chloride material is further improved, so that the polyvinyl chloride material has good economic benefit.)

1. The low-gloss polyvinyl chloride material is characterized by comprising the following raw materials in parts by weight:

80-100 parts of polyvinyl chloride resin, 1-10 parts of stabilizer, 4-15 parts of plasticizer, 0.8-5 parts of processing aid, 4-15 parts of modifier, 0-5.5 parts of flatting agent and 0.5-5 parts of lubricant.

2. The low-gloss polyvinyl chloride material according to claim 1, wherein the polyvinyl chloride resin is one or a mixture of SG-5, TL-1000, JLXG-1000 and C-1250M in any proportion.

3. The low gloss polyvinyl chloride material of claim 1, wherein the matting agent is prepared by:

mixing the components in a weight ratio of 1: (0.05-0.07) mixing and stirring a mixture of titanium dioxide and microcrystalline amorphous silicon dioxide with water until the mixture is fully wetted, filtering the mixture, putting the filtered mixture into cetyl trimethyl ammonium bromide and vinyl triethoxysilane, and grinding and stirring the mixture at the temperature of 65-75 ℃ until the particle size is 20-40 micrometers to obtain the silicon dioxide/silicon dioxide composite material;

the weight ratio of the mixture of titanium dioxide and microcrystalline amorphous silicon dioxide, cetyl trimethyl ammonium bromide and vinyl triethoxysilane is 1 (2-3) to (0.3-0.5).

4. The low-gloss polyvinyl chloride material according to claim 1, wherein the stabilizer is one of an organic tin stabilizer, a calcium-zinc composite stabilizer or a mixture of two stabilizers in any proportion.

5. The low-gloss polyvinyl chloride material according to claim 1, wherein the plasticizer is one of epoxidized soybean oil, composite environment-friendly plasticizer and DINP or a mixture of several of the epoxidized soybean oil, the composite environment-friendly plasticizer and the DINP in any proportion.

6. The low gloss polyvinyl chloride material of claim 1, wherein the processing aid is one of acrylic resin and methacrylic processing aid or a mixture of the two in any proportion.

7. The low-gloss polyvinyl chloride material according to claim 1, wherein the modifier is one of MBS, ACR and ABS or a mixture of several of MBS, ACR and ABS in any proportion.

8. The low gloss polyvinyl chloride material according to claim 1, wherein the lubricant is one or more of calcium stearate, zinc stearate, stearic acid, butyl stearate, polyol complex acid ester.

9. A preparation method of a low-gloss polyvinyl chloride material is characterized by comprising the following steps:

weighing the raw materials according to the formula of the low-gloss polyvinyl chloride material as claimed in any one of claims 1 to 8 for later use;

adding the polyvinyl chloride resin, the stabilizer, the plasticizer, the processing aid, the modifier, the flatting agent and the lubricant into stirring equipment, and fully mixing for 5-10 min to obtain a mixture;

and (2) shearing and preplasticizing the mixture by a planetary screw extruder at the temperature of 130-180 ℃, extruding, further plasticizing by a double-roller open mill at the temperature of 120-160 ℃, calendering and molding by a five-roller calender at the temperature of 185-210 ℃, leading out by a stretcher, cooling and shaping, and rolling to obtain the composite material.

10. The application of the low-gloss polyvinyl chloride material in preparing the packaging material is characterized in that the low-gloss polyvinyl chloride material is the low-gloss polyvinyl chloride material according to any one of claims 1 to 8.

Technical Field

The invention belongs to the technical field of materials, and particularly relates to a low-glossiness polyvinyl chloride material, and a preparation method and application thereof.

Background

Since the advent of plastic films, the optical properties of surface gloss is an important aspect of its performance, especially in the packaging field where plastic films are most widely used, surface gloss is an important indicator, and thus how to reduce or eliminate haze in plastic films has been a major concern since the advent of plastic films. However, with the change of aesthetic concept, people have shown diversified requirements on the surface characteristics of packaging materials, decorating materials may be heated during secondary processing or may be exposed to various heat sources during use, and low-gloss (matte) surface packaging also begins to be popular.

The polyvinyl chloride resin is a thermoplastic high molecular compound polymerized by vinyl chloride monomer, is an important plastic raw material, has the characteristics of low price, excellent performance, wide application field and the like, and requires low glossiness of the appearance of a PVC material in many application occasions along with the gradual improvement of the requirements of consumers at home and abroad on the appearance of the product; however, the current polyvinyl chloride materials still have the problems that the glossiness and the heat resistance can not meet the use requirement.

Disclosure of Invention

The embodiment of the invention provides a low-glossiness polyvinyl chloride material, and aims to solve the problem that the existing polyvinyl chloride material still has glossiness and heat resistance which cannot meet the use requirement.

The embodiment of the invention is realized in such a way that the low-glossiness polyvinyl chloride material comprises the following raw materials in parts by weight:

80-100 parts of polyvinyl chloride resin, 1-10 parts of stabilizer, 4-15 parts of plasticizer, 0.8-5 parts of processing aid, 4-15 parts of modifier, 0-5.5 parts of flatting agent and 0.5-5 parts of lubricant.

The embodiment of the invention also provides a preparation method of the low-glossiness polyvinyl chloride material, which is characterized by comprising the following steps:

weighing the raw materials according to the formula of the low-gloss polyvinyl chloride material for later use;

adding the polyvinyl chloride resin, the stabilizer, the plasticizer, the processing aid, the modifier, the flatting agent and the lubricant into stirring equipment, and fully mixing for 5-10 min to obtain a mixture;

and (2) shearing and preplasticizing the mixture by a planetary screw extruder at the temperature of 130-180 ℃, extruding, further plasticizing by a double-roller open mill at the temperature of 120-160 ℃, calendering and molding by a five-roller calender at the temperature of 185-210 ℃, leading out by a stretcher, cooling and shaping, and rolling to obtain the composite material.

The embodiment of the invention also provides application of the low-glossiness polyvinyl chloride material in preparation of a packaging material.

According to the low-gloss polyvinyl chloride material provided by the embodiment of the invention, through the reasonable proportion of the raw materials including the stabilizer, the plasticizer, the processing aid, the modifier, the flatting agent and the lubricant and the matching of the specific polyvinyl chloride resin, the obtained low-gloss polyvinyl chloride material is easy to process and form, has excellent mechanical properties, and is low in gloss, temperature resistant and low in cost; in addition, the gloss of the material can be further reduced by adding the flatting agent, and the mechanical property of the polyvinyl chloride material is further improved, so that the polyvinyl chloride material has good economic benefit.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In order to solve the problem that the existing polyvinyl chloride material still has glossiness and heat resistance which can not meet the use requirement, the embodiment of the invention provides a low-glossiness polyvinyl chloride material, which is prepared by reasonably proportioning raw materials of a stabilizer, a plasticizer, a processing aid, a modifier, a flatting agent and a lubricant and matching with a specific type of polyvinyl chloride resin, and the obtained low-glossiness polyvinyl chloride material is easy to process and form, has excellent mechanical property, low glossiness, heat resistance and low cost; in addition, the gloss of the material can be further reduced by adding the flatting agent, and the mechanical property of the polyvinyl chloride material is further improved, so that the polyvinyl chloride material has good economic benefit.

The embodiment of the invention provides a low-glossiness polyvinyl chloride material which comprises the following raw materials in parts by weight:

80-100 parts of polyvinyl chloride resin, 1-10 parts of stabilizer, 4-15 parts of plasticizer, 0.8-5 parts of processing aid, 4-15 parts of modifier, 0-5.5 parts of flatting agent and 0.5-5 parts of lubricant.

In the embodiment of the invention, the polyvinyl chloride resin is one or a mixture of SG-5, TL-1000, JLXG-1000 and C-1250M in any proportion.

In a preferred embodiment of the invention, the polyvinyl chloride resin is preferably TL-1000, JLXG-1000 (50-90): (10-50) by weight.

In the embodiment of the invention, the preparation method of the matting agent comprises the following steps:

mixing the components in a weight ratio of 1: (0.05-0.07) mixing and stirring a mixture of titanium dioxide and microcrystalline amorphous silicon dioxide with water until the mixture is fully wetted, filtering the mixture, putting the filtered mixture into cetyl trimethyl ammonium bromide and vinyl triethoxysilane, and grinding and stirring the mixture at the temperature of 65-75 ℃ until the particle size is 20-40 micrometers to obtain the silicon dioxide/silicon dioxide composite material;

the weight ratio of the mixture of titanium dioxide and microcrystalline amorphous silicon dioxide, cetyl trimethyl ammonium bromide and vinyl triethoxysilane is 1 (2-3) to (0.3-0.5).

Generally, titanium dioxide has excellent covering power and is often used as a plastic light-shading additive, but the price is high, and in order to achieve a certain light-shading effect, the required amount is relatively large, so that the production cost of a packaging material is greatly increased.

In the embodiment of the invention, the stabilizer is one of an organic tin stabilizer and a calcium-zinc composite stabilizer or a mixture of two stabilizers in any proportion.

In the embodiment of the invention, the plasticizer is one or a mixture of several of epoxidized soybean oil, a composite environment-friendly plasticizer and DINP in any proportion.

In the embodiment of the invention, the processing aid is one of acrylic resin and methacrylic processing aid or a mixture of two of the acrylic resin and the methacrylic processing aid in any proportion.

In the embodiment of the invention, the modifier is one of MBS, ACR and ABS or a mixture of a plurality of the MBS, ACR and ABS in any proportion.

In the embodiment of the invention, the lubricant is one or a mixture of several of calcium stearate, zinc stearate, stearic acid, butyl stearate and polyol complex acid ester in any proportion.

The embodiment of the invention also provides a preparation method of the low-glossiness polyvinyl chloride material, which comprises the following steps:

step 101, weighing the raw materials according to the formula of the low-glossiness polyvinyl chloride material for later use.

102, adding the polyvinyl chloride resin, the stabilizer, the plasticizer, the processing aid, the modifier, the flatting agent and the lubricant into stirring equipment, and fully mixing for 5-10 min to obtain a mixture.

103, shearing and preplasticizing the mixture by a planetary screw extruder at the temperature of 130-180 ℃, extruding, further plasticizing by a double-roll open mill at the temperature of 120-160 ℃, calendering and molding by a five-roll calender at the temperature of 185-210 ℃, leading out by a stretcher, cooling and shaping, and rolling to obtain the composite material.

The embodiment of the invention also provides application of the low-glossiness polyvinyl chloride material in preparation of a packaging material.

Examples of certain embodiments of the invention are given below, which are not intended to limit the scope of the invention.

In addition, it should be noted that the numerical values given in the following examples are as precise as possible, but those skilled in the art will understand that each numerical value should be understood as a divisor rather than an absolutely exact numerical value due to measurement errors and experimental operational problems that cannot be avoided. For example, it is to be understood that the weight values of the raw materials in the low gloss polyvinyl chloride material of each example may have an error of ± 2% or ± 1%, due to an error of the weighing apparatus.

Example 1

Weighing each raw material according to a formula of 100 parts of polyvinyl chloride resin (a mixture of TL-1000 and JLXG-1000 according to a weight ratio of 1: 1), 1.1 parts of methyl tin mercaptide stabilizer, 4 parts of epoxidized soybean oil, 1 part of acrylic resin, 4 parts of MBS and 0.8 part of calcium stearate for later use; adding the polyvinyl chloride resin, the methyl tin mercaptide stabilizer, the epoxidized soybean oil, the acrylic resin, the MBS and the calcium stearate into stirring equipment, and fully mixing for 8min to obtain a mixture; and (2) shearing and preplasticizing the mixture by a planetary screw extruder at the temperature of 150 ℃, extruding, further plasticizing by a double-roll open mill at the temperature of 140 ℃, calendering and molding by a five-roll calender at the temperature of 195 ℃, leading out by a stretcher, cooling and shaping, and rolling to obtain the low-gloss polyvinyl chloride material.

Example 2

Weighing raw materials according to a formula of 95 parts of polyvinyl chloride resin (a mixture of TL-1000 and JLXG-1000 in a weight ratio of 9: 1), 1.5 parts of methyl tin mercaptide stabilizer, 5.5 parts of epoxidized soybean oil, 1.5 parts of acrylic resin, 6 parts of ACR and 1 part of butyl stearate for later use; adding the polyvinyl chloride resin, the methyl tin mercaptide stabilizer, the epoxidized soybean oil, the acrylic resin, the ACR and the butyl stearate into stirring equipment, and fully mixing for 8min to obtain a mixture; and (2) shearing and preplasticizing the mixture by a planetary screw extruder at the temperature of 150 ℃, extruding, further plasticizing by a double-roll open mill at the temperature of 140 ℃, calendering and molding by a five-roll calender at the temperature of 195 ℃, leading out by a stretcher, cooling and shaping, and rolling to obtain the low-gloss polyvinyl chloride material.

Example 3

Weighing the raw materials according to the formula of 100 parts of polyvinyl chloride resin (TL-1000), 2 parts of methyl tin mercaptide stabilizer, 6 parts of epoxidized soybean oil, 2 parts of acrylic resin, 8 parts of ABS and 2 parts of calcium stearate for later use; adding the polyvinyl chloride resin, the methyl tin mercaptide stabilizer, the epoxidized soybean oil, the acrylic resin, the ABS and the calcium stearate into stirring equipment, and fully mixing for 8min to obtain a mixture; and (2) shearing and preplasticizing the mixture by a planetary screw extruder at the temperature of 150 ℃, extruding, further plasticizing by a double-roll open mill at the temperature of 140 ℃, calendering and molding by a five-roll calender at the temperature of 195 ℃, leading out by a stretcher, cooling and shaping, and rolling to obtain the low-gloss polyvinyl chloride material.

Example 4

Weighing each raw material according to a formula of 100 parts of polyvinyl chloride resin (a mixture of SG-5 and C-1250M in a weight ratio of 1: 1), 10 parts of methyl tin mercaptide stabilizer, 15 parts of epoxidized soybean oil, 5 parts of acrylic resin, 15 parts of MBS and 5 parts of calcium stearate for later use; adding the polyvinyl chloride resin, the methyl tin mercaptide stabilizer, the epoxidized soybean oil, the acrylic resin, the MBS and the calcium stearate into stirring equipment, and fully mixing for 8min to obtain a mixture; and (2) shearing and preplasticizing the mixture by a planetary screw extruder at the temperature of 150 ℃, extruding, further plasticizing by a double-roll open mill at the temperature of 140 ℃, calendering and molding by a five-roll calender at the temperature of 195 ℃, leading out by a stretcher, cooling and shaping, and rolling to obtain the low-gloss polyvinyl chloride material.

Example 5

Weighing each raw material according to a formula of 100 parts of polyvinyl chloride resin (mixture of JLXG-1000 and C-1250M in a weight ratio of 1: 1), 5 parts of methyl tin mercaptide stabilizer, 8 parts of epoxidized soybean oil, 2 parts of acrylic resin, 8 parts of MBS and 2 parts of zinc stearate for later use; adding the polyvinyl chloride resin, the methyl tin mercaptide stabilizer, the epoxidized soybean oil, the acrylic resin, the MBS and the zinc stearate into stirring equipment, and fully mixing for 8min to obtain a mixture; and (2) shearing and preplasticizing the mixture by a planetary screw extruder at the temperature of 150 ℃, extruding, further plasticizing by a double-roll open mill at the temperature of 140 ℃, calendering and molding by a five-roll calender at the temperature of 195 ℃, leading out by a stretcher, cooling and shaping, and rolling to obtain the low-gloss polyvinyl chloride material.

Comparative example 1

Weighing each raw material according to a formula of 100 parts of polyvinyl chloride resin (mixture of SG-7 and TL-1000 in a weight ratio of 1: 1), 1.1 parts of methyl tin mercaptide stabilizer, 4 parts of epoxidized soybean oil, 1 part of acrylic resin, 4 parts of MBS and 0.8 part of calcium stearate for later use; adding the polyvinyl chloride resin, the methyl tin mercaptide stabilizer, the epoxidized soybean oil, the acrylic resin, the MBS and the calcium stearate into stirring equipment, and fully mixing for 8min to obtain a mixture; and (2) shearing and preplasticizing the mixture by a planetary screw extruder at the temperature of 150 ℃, extruding, further plasticizing by a double-roll open mill at the temperature of 140 ℃, calendering and molding by a five-roll calender at the temperature of 195 ℃, leading out by a stretcher, cooling and shaping, and rolling to obtain the polyvinyl chloride material.

Comparative example 2

Weighing raw materials according to a formula of 95 parts of polyvinyl chloride resin (a mixture of SG-7 and TL-1000 in a weight ratio of 9: 1), 1.5 parts of methyl tin mercaptide stabilizer, 5.5 parts of epoxidized soybean oil, 1.5 parts of acrylic resin, 6 parts of ACR and 1 part of butyl stearate for later use; adding the polyvinyl chloride resin, the methyl tin mercaptide stabilizer, the epoxidized soybean oil, the acrylic resin, the ACR and the butyl stearate into stirring equipment, and fully mixing for 8min to obtain a mixture; and (2) shearing and preplasticizing the mixture by a planetary screw extruder at the temperature of 150 ℃, extruding, further plasticizing by a double-roll open mill at the temperature of 140 ℃, calendering and molding by a five-roll calender at the temperature of 195 ℃, leading out by a stretcher, cooling and shaping, and rolling to obtain the polyvinyl chloride material.

The polyvinyl chloride materials prepared in examples 1-5 and comparative examples 1-2 of the present invention were subjected to performance tests according to the existing relevant standards and requirements, and the test results are shown in table 1, wherein the gloss value test: the gloss meter produced by the cushinka photoelectric instrument institute was used, and the test angle was 60 °. Lower gloss values represent better forming and body impression.

TABLE 1

In summary, as can be seen from table 1, the low gloss polyvinyl chloride materials prepared in examples 1 to 5 of the present invention are significantly superior to those in comparative examples 1 to 2 in terms of gloss value, temperature resistance, whitening resistance, etc., which illustrates that the low gloss polyvinyl chloride materials of the present invention are easy to process and mold, and have the advantages of low gloss, temperature resistance and low cost by matching with specific types of polyvinyl chloride resins through reasonable mixture ratios of the raw materials including the stabilizer, the plasticizer, the processing aid, the modifier, the matting agent and the lubricant.

Further, the invention finds that the addition of the special matting agent can further reduce the glossiness of the material and further improve the mechanical properties of the polyvinyl chloride material, as shown in the following examples 6-9, by adding the matting agent into the low-gloss polyvinyl chloride material system.

Example 6

Mixing the components in a weight ratio of 1: 0.06 weight percent of the mixture of titanium dioxide and microcrystalline amorphous silicon dioxide is mixed with water and stirred until the mixture is fully wetted, the mixture is filtered and then placed into hexadecyl trimethyl ammonium bromide and vinyl triethoxysilane (the weight ratio of the mixture of titanium dioxide and microcrystalline amorphous silicon dioxide, the hexadecyl trimethyl ammonium bromide and the vinyl triethoxysilane is 1:2.5: 0.4), and the mixture is ground and stirred at the temperature of 70 ℃ until the particle size is 30 microns, so that the flatting agent is obtained.

Example 7

Weighing the raw materials according to the formula of 100 parts of polyvinyl chloride resin (mixture of TL-1000 and JLXG-1000 according to the weight ratio of 1: 1), 1.1 parts of methyl tin mercaptide stabilizer, 4 parts of epoxidized soybean oil, 1 part of acrylic resin, 4 parts of MBS, 1 part of flatting agent prepared in example 6 and 0.8 part of calcium stearate for later use; adding the polyvinyl chloride resin, the methyl tin mercaptide stabilizer, the epoxidized soybean oil, the acrylic resin, the MBS, the flatting agent prepared in the embodiment 6 and the calcium stearate into stirring equipment, and fully mixing for 8min to obtain a mixture; and (2) shearing and preplasticizing the mixture by a planetary screw extruder at the temperature of 150 ℃, extruding, further plasticizing by a double-roll open mill at the temperature of 140 ℃, calendering and molding by a five-roll calender at the temperature of 195 ℃, leading out by a stretcher, cooling and shaping, and rolling to obtain the low-gloss polyvinyl chloride material.

Example 8

Weighing the raw materials according to the formula of 100 parts of polyvinyl chloride resin (mixture of TL-1000 and JLXG-1000 according to the weight ratio of 1: 1), 1.1 parts of methyl tin mercaptide stabilizer, 4 parts of epoxidized soybean oil, 1 part of acrylic resin, 4 parts of MBS, 3.5 parts of flatting agent prepared in example 6 and 0.8 part of calcium stearate for later use; adding the polyvinyl chloride resin, the methyl tin mercaptide stabilizer, the epoxidized soybean oil, the acrylic resin, the MBS, the flatting agent prepared in the embodiment 6 and the calcium stearate into stirring equipment, and fully mixing for 8min to obtain a mixture; and (2) shearing and preplasticizing the mixture by a planetary screw extruder at the temperature of 150 ℃, extruding, further plasticizing by a double-roll open mill at the temperature of 140 ℃, calendering and molding by a five-roll calender at the temperature of 195 ℃, leading out by a stretcher, cooling and shaping, and rolling to obtain the low-gloss polyvinyl chloride material.

Example 9

Weighing the raw materials according to the formula of 100 parts of polyvinyl chloride resin (mixture of TL-1000 and JLXG-1000 according to the weight ratio of 1: 1), 1.1 parts of methyl tin mercaptide stabilizer, 4 parts of epoxidized soybean oil, 1 part of acrylic resin, 4 parts of MBS, 5 parts of flatting agent prepared in example 6 and 0.8 part of calcium stearate for later use; adding the polyvinyl chloride resin, the methyl tin mercaptide stabilizer, the epoxidized soybean oil, the acrylic resin, the MBS, the flatting agent prepared in the embodiment 6 and the calcium stearate into stirring equipment, and fully mixing for 8min to obtain a mixture; and (2) shearing and preplasticizing the mixture by a planetary screw extruder at the temperature of 150 ℃, extruding, further plasticizing by a double-roll open mill at the temperature of 140 ℃, calendering and molding by a five-roll calender at the temperature of 195 ℃, leading out by a stretcher, cooling and shaping, and rolling to obtain the low-gloss polyvinyl chloride material.

Comparative example 3

Weighing the raw materials according to the formula of 100 parts of polyvinyl chloride resin (mixture of TL-1000 and JLXG-1000 according to the weight ratio of 1: 1), 1.1 parts of methyl tin mercaptide stabilizer, 4 parts of epoxidized soybean oil, 1 part of acrylic resin, 4 parts of MBS, 6 parts of flatting agent prepared in example 6 and 0.8 part of calcium stearate for later use; adding the polyvinyl chloride resin, the methyl tin mercaptide stabilizer, the epoxidized soybean oil, the acrylic resin, the MBS, the flatting agent prepared in the embodiment 6 and the calcium stearate into stirring equipment, and fully mixing for 8min to obtain a mixture; and (2) shearing and preplasticizing the mixture by a planetary screw extruder at the temperature of 150 ℃, extruding, further plasticizing by a double-roll open mill at the temperature of 140 ℃, calendering and molding by a five-roll calender at the temperature of 195 ℃, leading out by a stretcher, cooling and shaping, and rolling to obtain the low-gloss polyvinyl chloride material.

The polyvinyl chloride materials prepared in the embodiments 1-2 and 7-9 and the comparative example 3 of the invention are subjected to performance tests according to the existing relevant standards and requirements, the test results are shown in table 2,

TABLE 2

In summary, it can be seen from table 2 that the mechanical properties of the polyvinyl chloride material of the present invention can be further improved while the gloss of the material can be further reduced by adding a proper amount of the matting agent to the polyvinyl chloride material system of the present invention, but the material is easily whitened as the usage amount of the matting agent increases, and the mechanical properties also show a tendency of increasing first and then decreasing as the usage amount of the matting agent increases.

In summary, the low-gloss polyvinyl chloride material provided by the embodiment of the invention is prepared by reasonably mixing the raw materials of the stabilizer, the plasticizer, the processing aid, the modifier, the delustering agent and the lubricant and matching with the specific polyvinyl chloride resin, and the obtained low-gloss polyvinyl chloride material is easy to process and form, has excellent mechanical properties, low gloss, temperature resistance and low cost; in addition, the gloss of the material can be further reduced by adding the flatting agent, and the mechanical property of the polyvinyl chloride material is further improved, so that the polyvinyl chloride material has good economic benefit.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.