阅读说明：本技术 一种耐磨的氯磺化聚乙烯橡胶及其制备方法 (Wear-resistant chlorosulfonated polyethylene rubber and preparation method thereof ) 是由 陈巧娜 张鹏 孙贵元 于 2019-04-10 设计创作，主要内容包括：一种耐磨的氯磺化聚乙烯橡胶及其制备方法,氯磺化聚乙烯橡胶、S40V氯丁橡胶、酚醛树脂、聚甲基三乙氧基硅烷、甲基丙烯酸正丁酯、氧化锌、炭黑、软化剂、硫磺、聚苯硫醚、蒸馏水、硬脂酸钙、羧基丁腈胶乳、纳米碳酸钙、纳米二氧化硅、硬脂酸、1035抗氧剂、3-氨丙基三甲氧基硅烷、KH-550硅烷偶联剂、煅烧高岭土、CZ促进剂、CBS促进剂、Na-22促进剂、ODA防老剂、RD防老剂、玻璃纤维、六偏磷酸钠。本发明较大的表面硬度使得其具有极好的耐磨性,很大程度上提高了与橡胶基体的相容性,使其达到了更加均匀的分散程度,提高了橡胶的耐磨性能。(A wear-resistant chlorosulfonated polyethylene rubber and a preparation method thereof are disclosed, wherein the chlorosulfonated polyethylene rubber, S40V chloroprene rubber, phenolic resin, polymethyltriethoxysilane, n-butyl methacrylate, zinc oxide, carbon black, a softening agent, sulfur, polyphenylene sulfide, distilled water, calcium stearate, carboxylated nitrile latex, nano calcium carbonate, nano silicon dioxide, stearic acid, 1035 antioxidant, 3-aminopropyltrimethoxysilane, KH-550 silane coupling agent, calcined kaolin, CZ accelerator, CBS accelerator, Na-22 accelerator, ODA antioxidant, RD antioxidant, glass fiber and sodium hexametaphosphate are adopted as raw materials. The rubber has excellent wear resistance due to the larger surface hardness, and the compatibility with a rubber matrix is improved to a great extent, so that the rubber reaches a more uniform dispersion degree, and the wear resistance of the rubber is improved.)

1. The wear-resistant chlorosulfonated polyethylene rubber is characterized by comprising the following raw materials in parts by weight: 100-120 parts of chlorosulfonated polyethylene rubber, 10-15 parts of S40V chloroprene rubber, 10-20 parts of phenolic resin, 4-8 parts of polymethyltriethoxysilane, 3-5 parts of n-butyl methacrylate, 5-7 parts of zinc oxide, 120-140 parts of carbon black, 20-30 parts of softener, 0.5-1 part of sulfur, 4-8 parts of polyphenylene sulfide, 10-20 parts of distilled water, 1-2 parts of calcium stearate, 3-6 parts of carboxylated nitrile latex, 3-6 parts of nano calcium carbonate, 4-8 parts of nano silicon dioxide, 1-2 parts of stearic acid, 1-2 parts of 1035 antioxidant, 3-4 parts of 3-aminopropyltrimethoxysilane, 2-6 parts of KH-550 silane coupling agent, 15-25 parts of calcined kaolin, 1-2 parts of CZ accelerator, 0.5-1.5 parts of CBS accelerator, 0.1-0.2 part of Na-22 accelerator, 1-2 parts of ODA antioxidant, 1-2 parts of RD antioxidant, 3-6 parts of glass fiber and 3-6 parts of sodium hexametaphosphate.

2. The wear-resistant chlorosulfonated polyethylene rubber according to claim 1, which is prepared from the following raw materials in parts by weight: 100 parts of chlorosulfonated polyethylene rubber, 10 parts of S40V chloroprene rubber, 10 parts of phenolic resin, 4 parts of polymethyltriethoxysilane, 3 parts of n-butyl methacrylate, 5 parts of zinc oxide, 120 parts of carbon black, 20 parts of softener, 0.5 part of sulfur, 4 parts of polyphenylene sulfide, 10 parts of distilled water, 1 part of calcium stearate, 3 parts of carboxylated nitrile latex, 3 parts of nano calcium carbonate, 4 parts of nano silicon dioxide, 1 part of stearic acid, 1 part of 1035 antioxidant, 3 parts of 3-aminopropyltrimethoxysilane, 2 parts of KH-550 silane coupling agent, 15 parts of calcined kaolin, 1 part of CZ promoter, 0.5 part of CBS promoter, 0.1 part of Na-22 promoter, 1 part of ODA antioxidant, 1 part of RD antioxidant, 3 parts of glass fiber and 3-6 parts of sodium hexametaphosphate.

3. The wear-resistant chlorosulfonated polyethylene rubber according to claim 1, which is prepared from the following raw materials in parts by weight: 120 parts of chlorosulfonated polyethylene rubber, 15 parts of S40V chloroprene rubber, 20 parts of phenolic resin, 8 parts of polymethyltriethoxysilane, 3-5 parts of n-butyl methacrylate, 7 parts of zinc oxide, 140 parts of carbon black, 30 parts of softener, 1 part of sulfur, 8 parts of polyphenylene sulfide, 20 parts of distilled water, 2 parts of calcium stearate, 6 parts of carboxylated nitrile latex, 6 parts of nano calcium carbonate, 8 parts of nano silicon dioxide, 2 parts of stearic acid, 2 parts of 1035 antioxidant, 4 parts of 3-aminopropyltrimethoxysilane, 2-6 parts of KH-550 silane coupling agent, 25 parts of calcined kaolin, 2 parts of CZ promoter, 1.5 parts of CBS promoter, 0.2 part of Na-22 promoter, 2 parts of ODA antioxidant, 2 parts of RD antioxidant, 6 parts of glass fiber and 6 parts of sodium hexametaphosphate.

4. The wear-resistant chlorosulfonated polyethylene rubber according to claim 1, which is prepared from the following raw materials in parts by weight: 110 parts of chlorosulfonated polyethylene rubber, 12 parts of S40V chloroprene rubber, 15 parts of phenolic resin, 6 parts of polymethyltriethoxysilane, 4 parts of n-butyl methacrylate, 6 parts of zinc oxide, 130 parts of carbon black, 25 parts of softener, 1 part of sulfur, 6 parts of polyphenylene sulfide, 15 parts of distilled water, 2 parts of calcium stearate, 5 parts of carboxylated nitrile latex, 5 parts of nano calcium carbonate, 6 parts of nano silicon dioxide, 1 part of stearic acid, 1 part of 1035 antioxidant, 3 parts of 3-aminopropyl trimethoxysilane, 4 parts of KH-550 silane coupling agent, 20 parts of CZ kaolin, 2 parts of CZ accelerator, 1.5 parts of CBS accelerator, 0.2 part of Na-22 accelerator, 2 parts of ODA antioxidant, 2 parts of RD antioxidant, 5 parts of glass fiber and 4 parts of sodium hexametaphosphate.

5. The preparation method of the wear-resistant chlorosulfonated polyethylene rubber is characterized by comprising the following steps of:

step 1: 10-15 parts of S40V chloroprene rubber, 4-8 parts of polymethyltriethoxysilane, 3-5 parts of n-butyl methacrylate, 20-30 parts of softener, 4-8 parts of polyphenylene sulfide, 10-20 parts of distilled water, 3-6 parts of carboxylated nitrile latex, 3-aminopropyltrimethoxysilane and 3-6 parts of sodium hexametaphosphate are all put into an internal mixer for mixing to obtain a liquid rubber material; mixing and grinding 5-7 parts of zinc oxide, 120-140 parts of carbon black, 3-6 parts of nano calcium carbonate, 4-8 parts of nano silicon dioxide, 15-25 parts of calcined kaolin and 3-6 parts of glass fiber, sieving with a 20-40-mesh sieve, and then adding into a liquid rubber material to obtain a mixed material; putting the mixed materials into an open mill for mixing, and cooling to room temperature to obtain a base material;

step 2: heating the base material obtained in the step 1, adding 10-20 parts of phenolic resin, 1-2 parts of stearic acid, 0.5-1 part of sulfur, 1-2 parts of 1035 antioxidant and 1-2 parts of calcium stearate, uniformly mixing, heating, stirring and cooling to room temperature to obtain a modified base material;

and step 3: heating 120 parts of chlorosulfonated polyethylene rubber, directly adding 2-6 parts of KH-550 silane coupling agent, 1-2 parts of CZ accelerator, 0.5-1.5 parts of CBS accelerator, 0.1-0.2 part of Na-22 accelerator, 1-2 parts of ODA antioxidant and 1-2 parts of RD antioxidant, uniformly mixing, then carrying out secondary heating, adding the modified base material obtained in the step 2, mixing and stirring, and uniformly stirring to obtain a base material to be vulcanized;

and 4, step 4: vulcanizing the base material to be vulcanized on a flat vulcanizing machine, and cooling to room temperature to obtain the wear-resistant chlorosulfonated polyethylene rubber.

6. The wear-resistant chlorosulfonated polyethylene rubber according to claim 1, wherein in step 1, mixing is performed in an internal mixer, the rotating speed of a rotor is 60-80r/min, and the time is 20-30 min; in the step 1, the roller speed ratio of the open mill is 1: 1-1.5; the front roller temperature is 50-60 ℃, the rear roller temperature is 40-50 ℃, and the rubber discharge temperature is 50-60 ℃.

7. The wear-resistant chlorosulfonated polyethylene rubber according to claim 1, wherein in step 2, after the temperature of the base material obtained in step 1 is raised, 10-20 parts of phenolic resin, 1-2 parts of stearic acid, 0.5-1 part of sulfur, 1-2 parts of 1035 antioxidant and 1-2 parts of calcium stearate are added and uniformly mixed, the temperature is further raised to 65-70 ℃, then the mixture is stirred, and the mixture is cooled to room temperature to obtain the modified base material.

8. The wear-resistant chlorosulfonated polyethylene rubber according to claim 1, wherein in step 3, 120 parts of 100-65 ℃ chlorosulfonated polyethylene rubber is heated to 35-65 ℃, then 2-6 parts of KH-550 silane coupling agent, 1-2 parts of CZ promoter, 0.5-1.5 parts of CBS promoter, 0.1-0.2 parts of Na-22 promoter, 1-2 parts of ODA antioxidant and 1-2 parts of RD antioxidant are directly added and uniformly mixed, then the mixture is heated to 55-85 ℃ for the second time, the modified base material obtained in step 2 is added and mixed, and the mixture is uniformly stirred to obtain the base material to be vulcanized.

9. The wear-resistant chlorosulfonated polyethylene rubber according to claim 1, wherein in step 4, the vulcanization temperature is 170-190 ℃ and the vulcanization time is 5-10 min.

Technical Field

The invention relates to chlorosulfonated polyethylene rubber, in particular to wear-resistant chlorosulfonated polyethylene rubber and a preparation method thereof.

Background

Chlorosulfonated polyethylene (CSM) is a special rubber prepared from low-density polyethylene or high-density polyethylene through chlorination and chlorosulfonation reactions. The molecular weight is generally 20000-30000, the rubber is a white or yellow elastomer, can be dissolved in aromatic hydrocarbon and chlorinated hydrocarbon and insoluble in fat and alcohol, can only swell and be insoluble in ketone and ether, has excellent ozone resistance, atmospheric aging resistance, chemical corrosion resistance and the like, has better physical and mechanical properties, aging resistance, heat resistance, low temperature resistance, oil resistance, flame resistance, wear resistance and electric insulation resistance, and has wide application.

With the development of science and technology, the requirements of people on various aspects are increased, the requirement on the wear resistance of rubber products is also improved, and the invention provides a chlorosulfonated polyethylene rubber which adopts a new idea to greatly improve the wear resistance of the rubber without changing the physical properties of the original excellent rubber material.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides wear-resistant chlorosulfonated polyethylene rubber and a preparation method thereof.

The technical scheme adopted by the invention for solving the technical problems is as follows: the wear-resistant chlorosulfonated polyethylene rubber is prepared from the following raw materials in parts by weight: 100-120 parts of chlorosulfonated polyethylene rubber, 10-15 parts of S40V chloroprene rubber, 10-20 parts of phenolic resin, 4-8 parts of polymethyltriethoxysilane, 3-5 parts of n-butyl methacrylate, 5-7 parts of zinc oxide, 120-140 parts of carbon black, 20-30 parts of softener, 0.5-1 part of sulfur, 4-8 parts of polyphenylene sulfide, 10-20 parts of distilled water, 1-2 parts of calcium stearate, 3-6 parts of carboxylated nitrile latex, 3-6 parts of nano calcium carbonate, 4-8 parts of nano silicon dioxide, 1-2 parts of stearic acid, 1-2 parts of 1035 antioxidant, 3-4 parts of 3-aminopropyltrimethoxysilane, 2-6 parts of KH-550 silane coupling agent, 15-25 parts of calcined kaolin, 1-2 parts of CZ accelerator, 0.5-1.5 parts of CBS accelerator, 0.1-0.2 part of Na-22 accelerator, 1-2 parts of ODA antioxidant, 1-2 parts of RD antioxidant, 3-6 parts of glass fiber and 3-6 parts of sodium hexametaphosphate.

The technical scheme adopted by the invention for solving the technical problems is as follows: a preparation method of wear-resistant chlorosulfonated polyethylene rubber comprises the following steps:

step 1: 10-15 parts of S40V chloroprene rubber, 4-8 parts of polymethyltriethoxysilane, 3-5 parts of n-butyl methacrylate, 20-30 parts of softener, 4-8 parts of polyphenylene sulfide, 10-20 parts of distilled water, 3-6 parts of carboxylated nitrile latex, 3-aminopropyltrimethoxysilane and 3-6 parts of sodium hexametaphosphate are all put into an internal mixer for mixing, the rotating speed of a rotor is 60-80r/min, the time is 20-30min, and liquid rubber materials are obtained after mixing; mixing and grinding 5-7 parts of zinc oxide, 120-140 parts of carbon black, 3-6 parts of nano calcium carbonate, 4-8 parts of nano silicon dioxide, 15-25 parts of calcined kaolin and 3-6 parts of glass fiber, sieving with a 20-40-mesh sieve, and then adding into a liquid rubber material to obtain a mixed material; feeding the mixed materials into an open mill for mixing, wherein the roller speed ratio of the open mill is 1: 1-1.5; the temperature of the front roller is 50-60 ℃, the temperature of the rear roller is 40-50 ℃, the glue discharging temperature is 50-60 ℃, and the base material is obtained after cooling to room temperature;

step 2: heating the base material obtained in the step 1, adding 10-20 parts of phenolic resin, 1-2 parts of stearic acid, 0.5-1 part of sulfur, 1-2 parts of 1035 antioxidant and 1-2 parts of calcium stearate, uniformly mixing, continuously heating to 65-70 ℃, stirring, and cooling to room temperature to obtain a modified base material;

and step 3: heating 100-65 ℃ of chlorosulfonated polyethylene rubber to 120 parts of KH-550 silane coupling agent, 1-2 parts of CZ accelerator, 0.5-1.5 parts of CBS accelerator, 0.1-0.2 part of Na-22 accelerator, 1-2 parts of ODA antioxidant and 1-2 parts of RD antioxidant, uniformly mixing, heating to 55-85 ℃ for the second time, adding the modified base material obtained in the step 2, mixing and stirring, and uniformly stirring to obtain a base material to be vulcanized;

and 4, step 4: vulcanizing the base material to be vulcanized on a flat vulcanizing machine, wherein the vulcanization temperature is 170-190 ℃, the vulcanization time is 5-10min, and cooling to room temperature to obtain the wear-resistant chlorosulfonated polyethylene rubber.

Compared with the prior art, the invention has the advantages that: the wear-resistant chlorosulfonated polyethylene rubber has excellent wear resistance due to the large surface hardness, and the compatibility with a rubber matrix is improved to a great extent, so that the chlorosulfonated polyethylene rubber achieves more uniform dispersion degree, and the wear resistance of the rubber is improved.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic flow chart of the preparation method of the present invention.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings, in order that the present disclosure may be more fully understood and fully conveyed to those skilled in the art. While the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the invention is not limited to the embodiments set forth herein.

The wear-resistant chlorosulfonated polyethylene rubber is prepared from the following raw materials in parts by weight: 100-120 parts of chlorosulfonated polyethylene rubber, 10-15 parts of S40V chloroprene rubber, 10-20 parts of phenolic resin, 4-8 parts of polymethyltriethoxysilane, 3-5 parts of n-butyl methacrylate, 5-7 parts of zinc oxide, 120-140 parts of carbon black, 20-30 parts of softener, 0.5-1 part of sulfur, 4-8 parts of polyphenylene sulfide, 10-20 parts of distilled water, 1-2 parts of calcium stearate, 3-6 parts of carboxylated nitrile latex, 3-6 parts of nano calcium carbonate, 4-8 parts of nano silicon dioxide, 1-2 parts of stearic acid, 1-2 parts of 1035 antioxidant, 3-4 parts of 3-aminopropyltrimethoxysilane, 2-6 parts of KH-550 silane coupling agent, 15-25 parts of calcined kaolin, 1-2 parts of CZ accelerator, 0.5-1.5 parts of CBS accelerator, 0.1-0.2 part of Na-22 accelerator, 1-2 parts of ODA antioxidant, 1-2 parts of RD antioxidant, 3-6 parts of glass fiber and 3-6 parts of sodium hexametaphosphate.

A preparation method of wear-resistant chlorosulfonated polyethylene rubber comprises the following steps:

step 1: 10-15 parts of S40V chloroprene rubber, 4-8 parts of polymethyltriethoxysilane, 3-5 parts of n-butyl methacrylate, 20-30 parts of softener, 4-8 parts of polyphenylene sulfide, 10-20 parts of distilled water, 3-6 parts of carboxylated nitrile latex, 3-aminopropyltrimethoxysilane and 3-6 parts of sodium hexametaphosphate are all put into an internal mixer for mixing to obtain a liquid rubber material; mixing and grinding 5-7 parts of zinc oxide, 120-140 parts of carbon black, 3-6 parts of nano calcium carbonate, 4-8 parts of nano silicon dioxide, 15-25 parts of calcined kaolin and 3-6 parts of glass fiber, sieving with a 20-40-mesh sieve, and then adding into a liquid rubber material to obtain a mixed material; and (3) putting the mixed materials into an open mill for mixing, and cooling to room temperature to obtain a base material.

Step 2: heating the base material obtained in the step 1, adding 10-20 parts of phenolic resin, 1-2 parts of stearic acid, 0.5-1 part of sulfur, 1-2 parts of 1035 antioxidant and 1-2 parts of calcium stearate, uniformly mixing, heating, stirring and cooling to room temperature to obtain the modified base material.

And step 3: heating 120 parts of chlorosulfonated polyethylene rubber 100-550, directly adding 2-6 parts of KH-550 silane coupling agent, 1-2 parts of CZ accelerator, 0.5-1.5 parts of CBS accelerator, 0.1-0.2 part of Na-22 accelerator, 1-2 parts of ODA antioxidant and 1-2 parts of RD antioxidant, uniformly mixing, then carrying out secondary heating, adding the modified base material obtained in the step 2, mixing and stirring, and uniformly stirring to obtain the base material to be vulcanized.

And 4, step 4: vulcanizing the base material to be vulcanized on a flat vulcanizing machine, and cooling to room temperature to obtain the wear-resistant chlorosulfonated polyethylene rubber.

Optimally, in the step 1, mixing in an internal mixer, wherein the rotating speed of a rotor is 60-80r/min, and the time is 20-30 min; in the step 1, the roller speed ratio of the open mill is 1: 1-1.5; the front roller temperature is 50-60 ℃, the rear roller temperature is 40-50 ℃, and the rubber discharge temperature is 50-60 ℃.

Preferably, in the step 2, the base material obtained in the step 1 is heated, then 10-20 parts of phenolic resin, 1-2 parts of stearic acid, 0.5-1 part of sulfur, 1-2 parts of 1035 antioxidant and 1-2 parts of calcium stearate are added and uniformly mixed, the temperature is continuously raised to 65-70 ℃, then the mixture is stirred, and the modified base material is obtained after the temperature is cooled to room temperature.

Optimally, in the step 3, after heating 120 parts of chlorosulfonated polyethylene rubber to 35-65 ℃, directly adding 2-6 parts of KH-550 silane coupling agent, 1-2 parts of CZ promoter, 0.5-1.5 parts of CBS promoter, 0.1-0.2 part of Na-22 promoter, 1-2 parts of ODA antioxidant and 1-2 parts of RD antioxidant, uniformly mixing, then carrying out secondary heating to 55-85 ℃, adding the modified base material obtained in the step 2, mixing and stirring, and obtaining the base material to be vulcanized after uniform stirring.

Preferably, in the step 4, the vulcanization temperature is 170-190 ℃, and the vulcanization time is 5-10 min.