Rubber sealing composite with excellent comprehensive performance and preparation method thereof

A rubber composition and comprehensive performance technology, applied in the field of rubber, to achieve the effects of convenient operation, outstanding performance indicators, and oil resistance

Inactive Publication Date: 2011-01-26
SHANGHAI ZHONGLI AUTO PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no rubber that can combine the advantages of the above two rubbers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A rubber sealing composition with excellent comprehensive performance, consisting of the following raw materials in parts by mass: 65 parts of nitrile rubber (N32); 35 parts of ethylene methyl acrylate (B-124); 6-ethoxy-2, 0.5 parts of 2,4-trimethyl-1,2-dihydroquinoline; 0.5 parts of the high-temperature reaction product of acetone and diphenylamine; 0.5 parts of N-phenyl-β-naphthylamine; 0.5 parts of hexyl-p-phenylenediamine; 0.5 parts of N, N'-p-phenylenediamine; 1.5 parts of microcrystalline wax 1900; 36 parts of carbon black; 6 parts of active zinc oxide; 0.5 parts of stearic acid; dioctyl phthalate 2 parts; 3 parts of dicumyl peroxide; 2 parts of N, N'-m-phenylene bismaleimide.

[0015] The preparation of above-mentioned composition adopts internal mixer mixing, and its steps are as follows:

[0016] Internal mixer mixing: Before mixing, the nitrile rubber should be masticated in advance and parked for more than 6 hours. Put the masticated nitrile rubber and ethyl...

Embodiment 2

[0018] A rubber sealing composition with excellent comprehensive performance, consisting of the following raw materials in parts by mass: 65 parts of nitrile rubber (N32); 35 parts of ethylene methyl acrylate (B-124); 6-ethoxy-2, 1 part of 2,4-trimethyl-1,2-dihydroquinoline; 1 part of high-temperature reaction product of acetone and diphenylamine; 1 part of N-phenyl-β-naphthylamine; N-phenyl-N'-cyclo 1.5 parts of hexyl-p-phenylenediamine; 1.5 parts of N, N'-p-phenylenediamine; 19002.5 parts of microcrystalline wax; 60 parts of carbon black; 5 parts of active zinc oxide; .05 parts of stearic acid; dioctyl phthalate 6 parts; 2 parts of dicumyl peroxide; 5 parts of N, N'-m-phenylene bismaleimide.

[0019] The preparation of above-mentioned composition adopts mill mixing, and its steps are as follows:

[0020] Mixing in the open mill: After softening the plasticized nitrile rubber, add ethylene methyl acrylate rubber, add active agent, stearic acid and anti-aging agent after 30 s...

Embodiment 3

[0022] A rubber sealing composition with excellent comprehensive performance, consisting of the following raw materials in parts by mass: 65 parts of nitrile rubber (N32); 35 parts of ethylene methyl acrylate (B-124); 6-ethoxy-2, 1.5 parts of 2,4-trimethyl-1,2-dihydroquinoline; 1 part of high-temperature reaction product of acetone and diphenylamine; 1 part of N-phenyl-β-naphthylamine; N-phenyl-N'-ring 1.5 parts of hexyl-p-phenylenediamine; 1.5 parts of N, N'-p-phenylenediamine; 1 part of microcrystalline wax 1900; 40 parts of carbon black; 5 parts of active zinc oxide; 0.5 parts of stearic acid; dioctyl phthalate 2 parts; 2 parts of dicumyl peroxide; 4 parts of N, N'-m-phenylene bismaleimide.

[0023] The preparation of above-mentioned composition adopts internal mixer mixing, and its steps are as follows:

[0024] Internal mixer mixing: Before mixing, the nitrile rubber should be masticated in advance and parked for more than 6 hours. Put the masticated nitrile rubber and e...

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PUM

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Abstract

The invention provides a rubber sealing composite with the excellent comprehensive performance. The composite is characterized in that the composite comprises the following components in parts by weight: 60-65 parts of butadiene-nitrile rubber, 35-40 parts of ethylene methyl acrylate (EMA), 1.5-3 parts of keto-amine reaction product antiager, 1-3 parts of p-phenylene diamine antiager, 1.5-2.5 parts of physical antioxidant, 0.5-1.0 part of stearic acid, 6-10 parts of activator, 35-60 parts of reinforcing agent, 2-6 parts of plasticizer, 1.5-3 parts of vulcanizing agent and 2-5 parts of promoting agent. The invention also provides a preparation method of the rubber sealing composite and the method is to perform mixing with a mixer or an open mill. The preparation method is simple and clear. The whole production process is convenient to operate, the raw materials are easy to purchase, and the prepared oil-resistant sealing material integrates the advantages of butadiene-nitrile rubber and EMA rubber.

Description

technical field [0001] The invention relates to a rubber sealing composition with excellent comprehensive performance and a preparation method thereof, which is used for making sealing and damping products for automobiles working in oil-resistant and high-low temperature environments, and belongs to the technical field of rubber. Background technique [0002] Nitrile rubber (NBR) is a typical oil-resistant (especially gasoline, diesel, etc.) rubber. The higher the acrylonitrile content in NBR, the worse the cold resistance, and the ozone resistance of NBR is also poor. Ethylene methyl acrylate rubber has excellent low temperature resistance (low temperature resistance is better than acrylate rubber), ozone resistance and high temperature durability, and oil resistance is also very good. At present, there is no rubber that can combine the advantages of the above two rubbers. Contents of the invention [0003] The object of the present invention is to provide a kind of rubb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08L23/08C08L33/08C08K13/02C08K5/3437C08K5/18C08K3/04C08K3/22C08K5/12C08K5/14C09K3/10
Inventor 林然
Owner SHANGHAI ZHONGLI AUTO PARTS
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