阅读说明：本技术 一种石墨烯增强聚甲醛绳缆的制备工艺 (Preparation process of graphene reinforced polyformaldehyde cable ) 是由 张爱民 姚绍庚 冯百明 贾艮克 于 2020-11-20 设计创作，主要内容包括：本发明属于聚甲醛绳缆技术领域,尤其为一种石墨烯增强聚甲醛绳缆的制备工艺,包括以下制备步骤：步骤S1：取以下重量份的原料：聚甲醛60～72份,高分子聚乙烯22～26份,碳纤维3～7份,石墨烯0.1～0.3份,分散剂2～5份,紫外线吸收剂0.2～0.4份、补强剂0.1～0.3份,抗氧剂0.6～1份。本发明采用聚甲醛、高分子聚乙烯、碳纤维和石墨烯为主要原料,使聚甲醛绳缆具有高模量、高韧性和高耐磨的特性,同时具有良好的耐高温性能；石墨烯对聚甲醛起到异相成核作用,使聚甲醛绳缆具有高拉伸强度,力学性能优异,进一步提高了聚甲醛纤维的强度和耐磨性能够使石墨烯的片层分隔开来,避免其聚集,使石墨烯分散更为均匀。(The invention belongs to the technical field of polyformaldehyde cables, and particularly relates to a preparation process of a graphene reinforced polyformaldehyde cable, which comprises the following preparation steps: step S1: taking the following raw materials in parts by weight: 60-72 parts of polyformaldehyde, 22-26 parts of high-molecular polyethylene, 3-7 parts of carbon fiber, 0.1-0.3 part of graphene, 2-5 parts of a dispersing agent, 0.2-0.4 part of an ultraviolet absorber, 0.1-0.3 part of a reinforcing agent and 0.6-1 part of an antioxidant. According to the invention, polyformaldehyde, high-molecular polyethylene, carbon fiber and graphene are used as main raw materials, so that the polyformaldehyde cable has the characteristics of high modulus, high toughness and high wear resistance, and has good high-temperature resistance; graphene plays heterogeneous nucleation to polyformaldehyde, makes polyformaldehyde cable have high tensile strength, and mechanical properties is excellent, has further improved polyformaldehyde fibre's intensity and wearability and can make the lamella of graphene separate, avoids its gathering, makes the graphite alkene dispersion more even.)

1. A preparation process of a graphene reinforced polyformaldehyde cable is characterized by comprising the following steps: the preparation method comprises the following preparation steps:

step S1: taking the following raw materials in parts by weight: 60-72 parts of polyformaldehyde, 22-26 parts of high-molecular polyethylene, 3-7 parts of carbon fiber, 0.1-0.3 part of graphene, 2-5 parts of a dispersing agent, 0.2-0.4 part of an ultraviolet absorber, 0.1-0.3 part of a reinforcing agent and 0.6-1 part of an antioxidant;

step S2: doping non-metallic elements into the graphene in an ion bombardment mode, and carrying out element doping modification on the graphene;

step S3: adding the graphene obtained by modification in the step S2, polyformaldehyde, high-molecular polyethylene, carbon fiber and graphene into a reactor, uniformly mixing at 400-800 r/min, sequentially adding a dispersing agent, an ultraviolet absorbent, a reinforcing agent and an antioxidant into the reactor after mixing, stirring and reacting for 20-30 min at 800-1200 r/min and a reaction temperature of 90-100 ℃, and performing melt mixing and extrusion granulation by using a double-screw extruder to obtain graphene reinforced polyformaldehyde and high-molecular polyethylene composite master batches;

step S4: spinning the graphene reinforced polyformaldehyde and high-molecular polyethylene composite master batch prepared in the step S3 into a fiber bundle by adopting a melt spinning mode, and cooling, stretching, heat setting and winding the fiber bundle to prepare a graphene reinforced polyformaldehyde and high-molecular polyethylene blend fiber;

step S5: and (4) twisting and weaving the graphene reinforced polyformaldehyde obtained in the step S4 and the high polymer polyethylene blended fiber to obtain the graphene reinforced polyformaldehyde cable.

2. The preparation process of the graphene reinforced polyformaldehyde cable according to claim 1, characterized in that: the dispersant in the step S1 is one of polyvinylpyrrolidone, polyacrylamide, polyethylene oxide, and polyvinyl alcohol.

3. The preparation process of the graphene reinforced polyformaldehyde cable according to claim 1, characterized in that: the ultraviolet absorbent in the step S1 is one of ultraviolet absorbents UV-9, UV-531, UV-326, UV-328 and UV-1164.

4. The preparation process of the graphene reinforced polyformaldehyde cable according to claim 1, characterized in that: and the reinforcing agent in the step S1 adopts nano silicon dioxide.

5. The preparation process of the graphene reinforced polyformaldehyde cable according to claim 1, characterized in that: the antioxidant in the step S1 is one of pentaerythritol tetrakis (β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate), n-octadecyl β - (4-hydroxyphenyl-3, 5-di-tert-butyl) propionate, 2, 6-di-tert-butyl-p-cresol, and 4, 4' -thiobis (6-tert-butyl-3- (methyl) phenol).

6. The preparation process of the graphene reinforced polyformaldehyde cable according to claim 1, characterized in that: the non-metal element in the step of S2 is one or more of sulfur, nitrogen, phosphorus, carbon, silicon and boron.

7. The preparation process of the graphene reinforced polyformaldehyde cable according to claim 1, characterized in that: and the stretching mode in the step S4 is high-temperature oil bath stretching, the stretching is 6-10 times, the oil bath temperature is 80-100 ℃, and the high-temperature oil bath time is 5-10 seconds.

Technical Field

The invention relates to the technical field of polyformaldehyde cables, in particular to a preparation process of a graphene reinforced polyformaldehyde cable.

Background

Graphene is a novel material with exceptional performance discovered only in 2004, and is a two-dimensional hexagonal lattice structure consisting of carbon atoms and having a thickness of a single atomic layer or several atomic layers. Graphene has many advantages such as high electrical and thermal conductivity and good mechanical strength, and has been widely used in the fields of materials and engineering. The graphene with a complete structure is a two-dimensional crystal consisting of stable benzene six-membered rings, the surface is inert, the chemical stability is high, and strong van der Waals force exists between graphene sheets, the graphene is easy to gather and is insoluble in other media, so that further research and application of the graphene are hindered to a certain extent.

Polyformaldehyde is a thermoplastic engineering plastic and has high mechanical properties such as elastic modulus, hardness and rigidity in a large temperature range. Therefore, polyoxymethylene is gradually used as a raw material for manufacturing ropes for ships. However, the existing polyformaldehyde has high crystallinity and large crystal grains, so that the notch sensitivity is large, the impact toughness is low, the existing technology is also beneficial to reinforcing polyformaldehyde by using graphene, but the problem that the graphene is easy to gather in a polymer is not solved, the strength of the prepared polyformaldehyde cable is still to be improved, and the high-temperature resistance of the prepared polyformaldehyde cable cannot meet the use requirement.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a preparation process of a graphene reinforced polyformaldehyde cable, and solves the problems of insufficient strength, low toughness, poor graphene dispersibility and poor high temperature resistance of the conventional polyformaldehyde cable.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: a preparation process of a graphene reinforced polyformaldehyde cable comprises the following preparation steps:

step S1: taking the following raw materials in parts by weight: 60-72 parts of polyformaldehyde, 22-26 parts of high-molecular polyethylene, 3-7 parts of carbon fiber, 0.1-0.3 part of graphene, 2-5 parts of a dispersing agent, 0.2-0.4 part of an ultraviolet absorber, 0.1-0.3 part of a reinforcing agent and 0.6-1 part of an antioxidant;

step S2: doping non-metallic elements into the graphene in an ion bombardment mode, and carrying out element doping modification on the graphene;

step S3: adding the graphene obtained by modification in the step S2, polyformaldehyde, high-molecular polyethylene, carbon fiber and graphene into a reactor, uniformly mixing at 400-800 r/min, sequentially adding a dispersing agent, an ultraviolet absorbent, a reinforcing agent and an antioxidant into the reactor after mixing, stirring and reacting for 20-30 min at 800-1200 r/min and a reaction temperature of 90-100 ℃, and performing melt mixing and extrusion granulation by using a double-screw extruder to obtain graphene reinforced polyformaldehyde and high-molecular polyethylene composite master batches;

step S4: spinning the graphene reinforced polyformaldehyde and high-molecular polyethylene composite master batch prepared in the step S3 into a fiber bundle by adopting a melt spinning mode, and cooling, stretching, heat setting and winding the fiber bundle to prepare a graphene reinforced polyformaldehyde and high-molecular polyethylene blend fiber;

step S5: and (4) twisting and weaving the graphene reinforced polyformaldehyde obtained in the step S4 and the high polymer polyethylene blended fiber to obtain the graphene reinforced polyformaldehyde cable.

In a preferred embodiment of the present invention, the dispersant in step S1 is one of polyvinylpyrrolidone, polyacrylamide, polyethylene oxide, and polyvinyl alcohol.

As a preferable technical scheme of the invention, the ultraviolet absorbent in the step S1 is one of ultraviolet absorbents UV-9, UV-531, UV-326, UV-328 and UV-1164.

As a preferable technical solution of the present invention, the reinforcing agent in the step S1 is nano silica.

In a preferred embodiment of the present invention, the antioxidant in the step S1 is one of pentaerythritol tetrakis (β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate), n-octadecyl β - (4-hydroxyphenyl-3, 5-di-tert-butyl) propionate, 2, 6-di-tert-butyl-p-cresol, and 4, 4' -thiobis (6-tert-butyl-3- (methyl) phenol).

In a preferred embodiment of the present invention, the non-metal element in step S2 is one or more of sulfur, nitrogen, phosphorus, carbon, silicon, and boron.

According to a preferable technical scheme of the invention, the stretching mode in the step S4 is high-temperature oil bath stretching, the stretching is 6-10 times, the oil bath temperature is 80-100 ℃, and the high-temperature oil bath time is 5-10 seconds.

(III) advantageous effects

Compared with the prior art, the invention provides a preparation process of a graphene reinforced polyformaldehyde cable, which has the following beneficial effects:

according to the preparation process of the graphene reinforced polyformaldehyde cable, polyformaldehyde, high-molecular polyethylene, carbon fiber and graphene are used as main raw materials, and after the high-molecular polyethylene and the carbon fiber are added, the polyformaldehyde cable has the characteristics of high modulus, high toughness and high wear resistance and also has good high-temperature resistance; graphene plays a role in heterogeneous nucleation on polyformaldehyde, so that a polyformaldehyde cable has high tensile strength and excellent mechanical properties, the strength and wear resistance of polyformaldehyde fibers are further improved, nonmetallic elements such as sulfur, nitrogen, phosphorus, carbon, silicon, boron and the like are doped into the graphene in an ion bombardment mode, the sheets of the graphene can be separated, aggregation of the graphene is avoided, the graphene is dispersed more uniformly, and the purpose of improving the overall performance of the polymer composite material is achieved.

Drawings

Fig. 1 is a schematic diagram of the steps of the preparation process of the graphene reinforced polyformaldehyde cable.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1, the present invention provides the following technical solutions: a preparation process of a graphene reinforced polyformaldehyde cable comprises the following preparation steps:

step S1: taking the following raw materials in parts by weight: 60 parts of polyformaldehyde, 26 parts of high-molecular polyethylene, 7 parts of carbon fiber, 0.3 part of graphene, 5 parts of a dispersing agent, 0.4 part of an ultraviolet absorber, 0.3 part of a reinforcing agent and 1 part of an antioxidant;

step S2: doping non-metallic elements into the graphene in an ion bombardment mode, and carrying out element doping modification on the graphene;

step S3: adding the graphene obtained by modification in the step S2, polyformaldehyde, high-molecular polyethylene, carbon fiber and graphene into a reactor, uniformly mixing at 400r/min, sequentially adding a dispersing agent, an ultraviolet absorbent, a reinforcing agent and an antioxidant into the reactor after mixing, stirring and reacting for 20min at 8000r/min and a reaction temperature of 90 ℃, and performing melt mixing and extrusion granulation by using a double-screw extruder to obtain graphene reinforced polyformaldehyde and high-molecular polyethylene composite master batches;

step S4: spinning the graphene reinforced polyformaldehyde and high-molecular polyethylene composite master batch prepared in the step S3 into a fiber bundle by adopting a melt spinning mode, and cooling, stretching, heat setting and winding the fiber bundle to prepare a graphene reinforced polyformaldehyde and high-molecular polyethylene blend fiber;

step S5: and (4) twisting and weaving the graphene reinforced polyformaldehyde obtained in the step S4 and the high polymer polyethylene blended fiber to obtain the graphene reinforced polyformaldehyde cable.

Specifically, the dispersant in step S1 is polyvinylpyrrolidone.

Specifically, the ultraviolet absorber UV-9 is used as the ultraviolet absorber in the step S1.

Specifically, the reinforcing agent in the step S1 is nano silica.

Specifically, the antioxidant in the step S1 is pentaerythritol tetrakis (β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate).

Specifically, the nonmetal elements in step S2 are sulfur, nitrogen, and phosphorus.

Specifically, the stretching mode in the step S4 was high-temperature oil bath stretching of 6 times at an oil bath temperature of 80 ℃ for 5 seconds.

Example 2

Referring to fig. 1, the present invention provides the following technical solutions: a preparation process of a graphene reinforced polyformaldehyde cable comprises the following preparation steps:

step S1: taking the following raw materials in parts by weight: 72 parts of polyformaldehyde, 22 parts of high-molecular polyethylene, 3 parts of carbon fiber, 0.1 part of graphene, 2 parts of a dispersing agent, 0.2 part of an ultraviolet absorber, 0.1 part of a reinforcing agent and 0.6 part of an antioxidant;

step S2: doping non-metallic elements into the graphene in an ion bombardment mode, and carrying out element doping modification on the graphene;

step S3: adding the graphene obtained by modification in the step S2, polyformaldehyde, high-molecular polyethylene, carbon fiber and graphene into a reactor, uniformly mixing at 600r/min, sequentially adding a dispersing agent, an ultraviolet absorbent, a reinforcing agent and an antioxidant into the reactor after mixing, stirring and reacting for 22min at 1000r/min and a reaction temperature of 14 ℃, performing melt mixing by using a double-screw extruder, and performing extrusion granulation to obtain graphene reinforced polyformaldehyde and high-molecular polyethylene composite master batches;

step S4: spinning the graphene reinforced polyformaldehyde and high-molecular polyethylene composite master batch prepared in the step S3 into a fiber bundle by adopting a melt spinning mode, and cooling, stretching, heat setting and winding the fiber bundle to prepare a graphene reinforced polyformaldehyde and high-molecular polyethylene blend fiber;

step S5: and (4) twisting and weaving the graphene reinforced polyformaldehyde obtained in the step S4 and the high polymer polyethylene blended fiber to obtain the graphene reinforced polyformaldehyde cable.

Specifically, the dispersant in step S1 is polyacrylamide.

Specifically, the ultraviolet absorber UV-531 is used as the ultraviolet absorber in the step S1.

Specifically, the reinforcing agent in the step S1 is nano silica.

Specifically, the antioxidant in the step S1 is n-octadecyl beta- (4-hydroxyphenyl-3, 5-di-tert-butyl) propionate.

Specifically, the nonmetallic elements in the step S2 are silicon and boron.

Specifically, the drawing manner in the step S4 was a high-temperature oil bath drawing of 8 times at an oil bath temperature of 85 ℃ for 7 seconds.

Example 3

Referring to fig. 1, the present invention provides the following technical solutions: a preparation process of a graphene reinforced polyformaldehyde cable comprises the following preparation steps:

step S1: taking the following raw materials in parts by weight: 67 parts of polyformaldehyde, 24 parts of high-molecular polyethylene, 5 parts of carbon fiber, 0.1 part of graphene, 3 parts of a dispersing agent, 0.2 part of an ultraviolet absorber, 0.1 part of a reinforcing agent and 0.6 part of an antioxidant;

step S2: doping non-metallic elements into the graphene in an ion bombardment mode, and carrying out element doping modification on the graphene;

step S3: adding the graphene obtained by modification in the step S2, polyformaldehyde, high-molecular polyethylene, carbon fiber and graphene into a reactor, uniformly mixing at 700r/min, sequentially adding a dispersing agent, an ultraviolet absorbent, a reinforcing agent and an antioxidant into the reactor after mixing, stirring and reacting for 25min at 1100r/min and a reaction temperature of 97 ℃, and performing melt mixing and extrusion granulation by using a double-screw extruder to obtain graphene reinforced polyformaldehyde and high-molecular polyethylene composite master batches;

step S4: spinning the graphene reinforced polyformaldehyde and high-molecular polyethylene composite master batch prepared in the step S3 into a fiber bundle by adopting a melt spinning mode, and cooling, stretching, heat setting and winding the fiber bundle to prepare a graphene reinforced polyformaldehyde and high-molecular polyethylene blend fiber;

step S5: and (4) twisting and weaving the graphene reinforced polyformaldehyde obtained in the step S4 and the high polymer polyethylene blended fiber to obtain the graphene reinforced polyformaldehyde cable.

Specifically, the dispersant in step S1 is polyethylene oxide.

Specifically, the ultraviolet absorber UV-326 is used as the ultraviolet absorber in the step S1.

Specifically, the reinforcing agent in the step S1 is nano silica.

Specifically, the antioxidant in the step S1 is 2, 6-di-tert-butyl-p-cresol.

Specifically, the nonmetallic elements in step S2 are carbon and silicon.

Specifically, the stretching mode in the step S4 was high-temperature oil bath stretching of 8 times at an oil bath temperature of 95 ℃ for 8 seconds.

Example 4

Referring to fig. 1, the present invention provides the following technical solutions: a preparation process of a graphene reinforced polyformaldehyde cable comprises the following preparation steps:

step S1: taking the following raw materials in parts by weight: 68 parts of polyformaldehyde, 22 parts of high-molecular polyethylene, 5 parts of carbon fiber, 0.3 part of graphene, 4 parts of a dispersing agent, 0.4 part of an ultraviolet absorber, 0.3 part of a reinforcing agent and 1 part of an antioxidant;

step S2: doping non-metallic elements into the graphene in an ion bombardment mode, and carrying out element doping modification on the graphene;

step S3: adding the graphene obtained by modification in the step S2, polyformaldehyde, high-molecular polyethylene, carbon fiber and graphene into a reactor, uniformly mixing at 600r/min, sequentially adding a dispersing agent, an ultraviolet absorbent, a reinforcing agent and an antioxidant into the reactor after mixing, stirring and reacting for 20-30 min at 1200r/min and a reaction temperature of 100 ℃, performing melt mixing by using a double-screw extruder, and performing extrusion granulation to obtain graphene reinforced polyformaldehyde and high-molecular polyethylene composite master batches;

step S4: spinning the graphene reinforced polyformaldehyde and high-molecular polyethylene composite master batch prepared in the step S3 into a fiber bundle by adopting a melt spinning mode, and cooling, stretching, heat setting and winding the fiber bundle to prepare a graphene reinforced polyformaldehyde and high-molecular polyethylene blend fiber;

step S5: and (4) twisting and weaving the graphene reinforced polyformaldehyde obtained in the step S4 and the high polymer polyethylene blended fiber to obtain the graphene reinforced polyformaldehyde cable.

Specifically, the dispersant in the step S1 is polyvinyl alcohol.

Specifically, the ultraviolet absorber UV-328 is used as the ultraviolet absorber in the step S1.

Specifically, the reinforcing agent in the step S1 is nano silica.

Specifically, the antioxidant in the step S1 is 4, 4' -thiobis (6-tert-butyl-3- (methyl) phenol).

Specifically, the nonmetal element in step S2 is boron.

Specifically, the stretching mode in the step S4 was high-temperature oil bath stretching of 9 times at an oil bath temperature of 95 ℃ for 9 seconds.

According to the graphene reinforced polyformaldehyde cable prepared in the embodiments 1-4, polyformaldehyde, high-molecular polyethylene, carbon fiber and graphene are used as main raw materials, and after the high-molecular polyethylene and the carbon fiber are added, the polyformaldehyde cable has the characteristics of high modulus, high toughness and high wear resistance, and has good high-temperature resistance; the graphene plays a role in heterogeneous nucleation on polyformaldehyde, so that a polyformaldehyde cable has high tensile strength and excellent mechanical property, the strength and wear resistance of polyformaldehyde fibers are further improved, and in order to ensure the dispersibility of the graphene, nonmetallic elements such as sulfur, nitrogen, phosphorus, carbon, silicon, boron and the like are doped into the graphene in an ion bombardment mode, so that the sheets of the graphene can be separated, the aggregation of the graphene is avoided, the graphene is dispersed more uniformly, and the aim of improving the overall performance of the polymer composite material is fulfilled; on the other hand, the polyformaldehyde cable can have good ultraviolet absorption performance and oxidation resistance through the addition of the dispersing agent, the ultraviolet absorbent, the reinforcing agent and the antioxidant, and the overall performance is obviously improved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.