Low-temperature resistant nitrile butadiene rubber material and preparation method thereof

A technology of nitrile rubber and low temperature resistance, applied in the field of low temperature resistant nitrile rubber compound and its preparation, can solve the problems of unsatisfactory sealing performance, poor ozone resistance, poor low temperature resistance, etc., to achieve easy processing and improve compatibility Sexuality, the effect of improving the overall performance

Inactive Publication Date: 2016-10-12
郭庆平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sealing strips on automobiles, shock absorbers, engine crankshaft and other oil seal materials are all rubber materials, but the sealing performance of existing rubber seals is difficult under high temperature, low temperature, large temperature difference, corrosive medium and long life. Satisfactory, my country has a vast territory, and the lowest temperature in the western region can reach

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A low-temperature-resistant nitrile rubber compound, made of the following raw materials in parts by weight: 45 parts of nitrile rubber, 18 parts of natural rubber, 27 parts of silicone rubber, 20 parts of PVC, 37 parts of quick-pressed carbon black, semi-reinforced 20 parts of carbon black, 2 parts of anti-aging agent RD, 2 parts of anti-aging agent MB, 12 parts of bentonite, 6 parts of zeolite powder, 8 parts of stearic acid, 6 parts of diisobutyl phthalate, 2 parts of paraffin, chlorinated polystyrene 8 parts of ethylene, 3 parts of diisobutyl phthalate, 2 parts of sulfur, 3 parts of DTDM. Wherein the mass content of acrylonitrile in the nitrile rubber is 18-24%, the Mooney viscosity is 40-65%, and the chlorine content in the chlorinated polyethylene is 34-38%.

[0021] The preparation method of low temperature resistant nitrile rubber compound comprises the following steps:

[0022] 1) Preheat the mill to 170°C, add nitrile rubber and PVC granules to blend, knead f...

Embodiment 2

[0028] A low-temperature-resistant nitrile rubber compound, made of the following raw materials in parts by weight: 40 parts of nitrile rubber, 20 parts of natural rubber, 25 parts of silicone rubber, 18 parts of PVC, 50 parts of quick-extruded carbon black, anti-aging agent RD 3 parts, anti-aging agent IPPD 2 parts, bentonite 10 parts, zeolite powder 8 parts, stearic acid 7 parts, diisobutyl phthalate 4 parts, paraffin wax 2 parts, chlorinated polyethylene 6 parts, phthalic acid 4 parts of diisobutyl ester, 1 part of sulfur, 4 parts of DTDM. Wherein the mass content of acrylonitrile in the nitrile rubber is 18-24%, the Mooney viscosity is 40-65%, and the chlorine content in the chlorinated polyethylene is 34-38%.

[0029] The preparation method of low temperature resistant nitrile rubber compound comprises the following steps:

[0030] 1) Preheat the mill to 170°C, add nitrile rubber and PVC granules to blend, knead for 5 minutes, discharge and cool to obtain modified nitril...

Embodiment 3

[0035] A low-temperature resistant nitrile rubber compound, made of the following raw materials in parts by weight: 50 parts of nitrile rubber, 15 parts of natural rubber, 30 parts of silicone rubber, 22 parts of PVC, 60 parts of semi-reinforcing carbon black, anti-aging agent IPPD 1 part, anti-aging agent MB 2 parts, bentonite 15 parts, zeolite powder 5 parts, stearic acid 10 parts, diisobutyl phthalate 6 parts, paraffin wax 3 parts, chlorinated polyethylene 10 parts, phthalic acid 2 parts of diisobutyl ester, 3 parts of sulfur, 2 parts of DTDM. Wherein the mass content of acrylonitrile in the nitrile rubber is 18-24%, the Mooney viscosity is 40-65%, and the chlorine content in the chlorinated polyethylene is 34-38%.

[0036] The preparation method of low temperature resistant nitrile rubber compound comprises the following steps:

[0037] 1) Preheat the mill to 170°C, add nitrile rubber and PVC granules to blend, knead for 8 minutes, discharge and cool to obtain modified ni...

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Abstract

The invention discloses a low-temperature resistant nitrile butadiene rubber material which is prepared from the following raw materials in parts by weight: 40-50 parts of nitrile butadiene rubber, 15-20 parts of natural rubber, 20-30 parts of silicone rubber, 18-22 parts of PVC, 50-60 parts of reinforcing carbon black, 3-5 parts of anti-aging agent, 10-15 parts of bentonite, 5-8 parts of zeolite powder, 7-10 parts of stearic acid, 4-6 parts of diisobutyl phthalate, 2-3 parts of paraffin, 6-10 parts of chlorinated polyethylene, 2-4 parts of diisobutyl phthalate, 1-3 parts of sulfur and 2-4 parts of DTDM. The invention also discloses a preparation method of the low-temperature resistant nitrile butadiene rubber material. The preparation method disclosed by the invention is simple; and the prepared rubber material has perfect aging resistance and low-temperature resistance and can be used in an environment of -45 DEG C while the oil resistance and wear resistance are good, and the service life is greatly prolonged.

Description

technical field [0001] The invention relates to the technical field of synthetic rubber, in particular to a low-temperature-resistant nitrile rubber compound and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of the automobile industry, consumers' requirements for cars have also begun to develop towards comfort, safety, and economy. The sealing strips on automobiles, shock absorbers, engine crankshaft and other oil seal materials are all rubber materials, but the sealing performance of existing rubber seals is difficult under high temperature, low temperature, large temperature difference, corrosive medium and long life. Satisfactory, my country has a vast territory, and the lowest temperature in the western region can reach about -45°C. In these areas, rubber parts are prone to malfunction due to low temperature, thus causing some safety hazards. [0003] Nitrile rubber is prepared by emulsion polymerization of butadi...

Claims

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Application Information

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IPC IPC(8): C08L9/02C08L7/00C08L83/04C08L27/06C08L91/06C08L23/28C08K13/02C08K3/04C08K3/34C08K5/09C08K5/12
CPCC08L9/02C08K2201/014C08L2205/035C08L7/00C08L83/04C08L27/06C08L91/06C08L23/286C08K13/02C08K3/04C08K3/346C08K3/34C08K5/09C08K5/12
Inventor 郭庆平
Owner 郭庆平
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