Preparation method for conductive wear-resistant butadiene-acrylonitrile rubber material

A kind of technology of nitrile rubber and preparation steps, which is applied in the field of preparation of conductive and wear-resistant nitrile rubber materials, can solve the problems of poor electrical conductivity and easy wear of rubber, and achieve the effects of improving adhesion, broad application prospects, and improving conductivity

Inactive Publication Date: 2017-12-22
广东华体体育设施有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem mainly solved by the present invention is to provide a preparation method of a conduc

Method used

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  • Preparation method for conductive wear-resistant butadiene-acrylonitrile rubber material

Examples

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Example Embodiment

[0022] Example 1

[0023] Weigh 20g expandable graphite and place it in a vacuum drying oven, set the temperature of the vacuum drying oven to 100℃, put 100g phosphorus pentoxide in the vacuum drying oven, dry for 8 hours, and put the dried expandable graphite into a beaker , Then put the beaker under the microwave and process it with 700W power for 40s, take out the beaker and cool to room temperature to expand the expandable graphite, so the microwave treatment heats and expands 3 times to obtain expanded graphite; combine 20g of sodium lauryl sulfate with Mix 200 mL of deionized water and stir for 10 minutes to obtain an emulsion. Soak 10 g of expanded graphite in the emulsion to obtain a mixed suspension. Perform ultrasonic treatment on the mixed suspension. Set the ultrasonic frequency to 30KHz. After ultrasonic treatment, nano graphite flakes are obtained. The aqueous suspension of the layer; add 100g of acrylonitrile and 90g of butadiene into a three-necked flask with a st...

Example Embodiment

[0024] Example 2

[0025] Weigh 25g of expandable graphite and place it in a vacuum drying oven. Set the temperature of the vacuum drying oven to 105°C. Put 110g of phosphorus pentoxide into the vacuum drying oven and dry for 9 hours. Put the dried expandable graphite into a beaker. , Then put the beaker in the microwave for 42s with a power of 750W, take out the beaker and cool to room temperature to expand the expandable graphite, so the microwave treatment heats and expands 4 times to obtain expanded graphite; combine 23g of sodium lauryl sulfate with Mix 210mL of deionized water and stir for 13 minutes to obtain an emulsion. Soak 13g of expanded graphite in the emulsion to obtain a mixed suspension. The mixed suspension is subjected to ultrasonic treatment, and the ultrasonic frequency is set to 31KHz. After ultrasonic treatment, nano graphite flakes are obtained The aqueous suspension of the layer; add 105g acrylonitrile and 95g butadiene into a three-necked flask with a sti...

Example Embodiment

[0026] Example 3

[0027] Weigh 30g of expandable graphite and place it in a vacuum drying oven. Set the temperature of the vacuum drying oven to 110°C. Put 120g of phosphorus pentoxide in the vacuum drying oven and dry for 10 hours. Put the dried expandable graphite into a beaker. , Then put the beaker under the microwave and treat it with 800W power for 45s, take out the beaker and cool it to room temperature to expand the expandable graphite, so the microwave treatment heats and expands 5 times to obtain expanded graphite; combine 25g of sodium lauryl sulfate with Mix 220mL of deionized water and stir for 15min to obtain an emulsion. Soak 15g of expanded graphite in the emulsion to obtain a mixed suspension. The mixed suspension is subjected to ultrasonic treatment, and the ultrasonic frequency is set to 32KHz. After ultrasonic treatment, nano graphite flakes are obtained. The aqueous suspension of the layer; put 110g of acrylonitrile and 100g of butadiene into a three-necked ...

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Abstract

The invention relates to a preparation method for a conductive wear-resistant butadiene-acrylonitrile rubber material, belonging to the technical field of rubber. According to the invention, graphite is treated with microwaves to obtain expanded graphite; the expanded graphite is subjected to ultrasonic treatment, and the expanded graphite is dispersed under vibration so as to form a nanometer graphite flake layer; the nanometer graphite flake layer is copolymerized with acrylonitrile and butadiene; and under the condition of emulsion blending, active sites of the nanometer graphite flake layer and rubber molecules undergo self-vulcanization so as to form a conductive network, so the effect of improving poor conductivity is obtained. Due to interaction of polarities of groups, the mobility of butadiene-acrylonitrile rubber chain segments is greatly reduced. The addition of modified bentonite in the process of plasticating enables large hysteresis loss to be produced during friction, and abrasive particles are formed after destroy of a rubber compound on a friction surface; and the abrasive particles can improve the adhesion of the rubber compound to the friction surface, so the purpose of improving wear performance is achieved.

Description

Technical field [0001] The invention relates to the technical field of rubber preparation, in particular to a method for preparing a conductive wear-resistant nitrile rubber material. Background technique [0002] Raw rubber is the main material in the manufacture of rubber products. Rubber is an elastic polymer. According to different manufacturing methods, rubber can be divided into synthetic rubber and natural rubber. Natural rubber is mainly derived from Hevea rubber tree. When the skin of this rubber tree is cut, milky white juice will flow out, called latex. The latex is coagulated, washed, molded, and dried to obtain natural rubber. Synthetic rubber is made by artificial synthesis methods, and different kinds of rubber can be synthesized by using different raw materials, such as butadiene rubber, neoprene rubber, styrene butadiene rubber, nitrile rubber and so on. [0003] Nitrile rubber is produced by emulsion polymerization of butadiene and acrylonitrile. Its molecular c...

Claims

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Application Information

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IPC IPC(8): C08L9/02C08K13/06C08K9/04C08K3/34C08K3/36C08K7/24
Inventor 高产明何俊欣张淑娴
Owner 广东华体体育设施有限公司
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