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Nitrile rubber and preparation method thereof

A technology of nitrile rubber and accelerator, which is applied in the field of rubber production, can solve the problems of harsh use environment, insufficient tensile strength, poor low temperature resistance, etc., and achieve the effect of reasonable composition, strict proportioning and good low temperature performance

Inactive Publication Date: 2017-08-22
扬州华通橡塑有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But traditional vulcanization method yield rate is lower, and vulcanization cycle is long, and cost is high; And because the application field of acrylonitrile-butadiene rubber is wider, and service environment is harsher, the rubber in the prior art mainly has following shortcoming: 1. low temperature resistance is poor , easy to break under extreme weather conditions; 2. Insufficient tensile strength; 3. Long-term use is easy to compress and deform; 4. Long-term use is easy to age and has a short service life

Method used

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  • Nitrile rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The parts of each component of a nitrile rubber are: nitrile rubber 100phr, carbon black 65phr, dioctyl sebacate 30phr, modified talc 50phr, zinc oxide 6phr, stearic acid 1phr, coumarone 5phr, Antiaging agent RD 2phr, antiaging agent 4010NA2phr, dispersing agent 2phr, moisture absorbent 15phr, sulfur S 3phr, accelerator D 1phr, accelerator M 2phr, accelerator DPTT 2phr.

[0017] A preparation method of nitrile rubber. The vulcanization process is as follows: after extruding the product, the product is subjected to microwave vulcanization molding through one-stage microwave and two-stage hot air vulcanization equipment: the temperature of the microwave section is 220 ℃, the temperature of the hot air heating section is 180 ℃, the hot air The second heating stage temperature is 180°C.

Embodiment 2

[0019] The parts of each component of a nitrile rubber are: nitrile rubber 100phr, carbon black 70phr, dioctyl sebacate 35phr, modified talc 55phr, zinc oxide 7phr, stearic acid 2phr, coumarone 7phr, Antiaging agent RD 2.5phr, antiaging agent 4010NA3phr, dispersing agent 3phr, hygroscopic agent 18phr, sulfur S 4phr, accelerator D 2phr, accelerator M 3phr, accelerator DPTT 3phr.

[0020] A preparation method of nitrile rubber. The vulcanization process is as follows: after extruding the product, the product is subjected to microwave vulcanization molding through one-stage microwave and two-stage hot air vulcanization equipment: the temperature of the microwave section is 220 ℃, the temperature of the hot air heating section is 180 ℃, the hot air The second heating stage temperature is 180°C.

Embodiment 3

[0022] The parts of each component of a nitrile rubber are: nitrile rubber 100phr, carbon black 80phr, dioctyl sebacate 40phr, modified talc 60phr, zinc oxide 8phr, stearic acid 3phr, coumarone 8phr, Antiaging agent RD 3phr, antiaging agent 4010NA4phr, dispersing agent 4phr, hygroscopic agent 20phr, sulfur S 5phr, accelerator D 2phr, accelerator M 4phr, and accelerator DPTT 4phr.

[0023] A preparation method of nitrile rubber. The vulcanization process is as follows: after extruding the product, the product is subjected to microwave vulcanization molding through one-stage microwave and two-stage hot air vulcanization equipment: the temperature of the microwave section is 220 ℃, the temperature of the hot air heating section is 180 ℃, the hot air The second heating stage temperature is 180°C.

[0024] The performance parameters of the product formula of the present invention are listed in the following table:

[0025]

[0026] It can be seen from the above table that compared with s...

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Abstract

The invention discloses nitrile rubber in the technical field of rubber production. The nitrile rubber is prepared from the following ingredients in parts: 100phr of nitrile rubber, 60 to 80phr of carbon black, 30 to 40phr of dioctyl sebacate, 50 to 60phr of modified talcum powder, 5 to 8phr of zinc oxide, 1 to 3phr of stearic acid, 5 to 8phr of coumarone, 2 to 3phr of anti-aging agents RD, 1.5 to 4phr of anti-aging agents 4010NA, 2 to 4phr of dispersing agents, 15 to 20phr of moisture absorbents, 3 to 5phr of sulphur S, 1 to 2phr of accelerators D, 2 to 4phr of accelerators M and 2 to 4phr of accelerators DPTT. According to the vulcanization process, extrusion products are subjected to microwave vulcanization molding through first-section microwave and second-section hot air vulcanization equipment. The nitrile rubber has the advantages that the low-temperature resistant performance is good; the intensity is high; the pressure change is low; the anti-aging performance is realized; the service life is long; the forming is realized through a microwave vulcanization method; the cost is low; the efficiency is high and the finished product rate is high.

Description

Technical field [0001] The invention relates to the technical field of rubber production, in particular to a nitrile rubber and a preparation method thereof. Background technique [0002] Nitrile rubber is produced by emulsion polymerization of butadiene and acrylonitrile. It can be used for a long time in the air at 120°C or in oil at 150°C. It is widely used to make various oil-resistant rubber products, a variety of oil-resistant gaskets, Gaskets, casings, flexible packaging, flexible hoses, printing and dyeing rubber rollers, cable rubber materials, etc., have become essential elastic materials in industries such as automobiles, aviation, petroleum, and copying. In the rubber preparation process, vulcanization is the most important process step in the process. The traditional vulcanization methods such as pressurized flat vulcanization, steam vulcanization tank vulcanization, hot air vulcanization, salt bath vulcanization and other operating methods based on the principle of ...

Claims

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Application Information

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IPC IPC(8): C08L9/02C08L45/02C08K13/06C08K9/00C08K3/34C08K3/04C08K5/11C08K3/22C08K5/09C08K5/00B29C35/04B29C35/08
CPCC08L9/02B29C35/045B29C35/0805B29C2035/0855C08K2003/2296C08L2201/08C08L2312/06
Inventor 殷朝擎唐光灵徐云祥
Owner 扬州华通橡塑有限公司
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