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Foaming agent for NBR sponge rubber

A technology of sponge rubber and foaming agent, applied in the field of foaming agent, can solve the problems of affecting the performance of rubber products, low technical quality level, low foaming ratio, etc., and achieve good temperature adaptability, uniformity of dispersion, low density, The effect of increasing the foaming rate

Active Publication Date: 2014-03-12
安徽艾柯泡塑股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the foaming agent used in NBR sponge rubber has problems such as low foaming ratio and poor stability, which directly affect the performance of rubber products, resulting in low product strength, unstable quality, and low overall technical quality.

Method used

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  • Foaming agent for NBR sponge rubber

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Embodiment

[0032] A foaming agent for NBR sponge rubber, consisting of the following raw materials in parts by weight:

[0033] Azodicarbonamide 10 parts

[0034] 4,4'-oxobisbenzenesulfonyl hydrazide 6 parts

[0035] 3 parts p-toluenesulfonyl hydrazide

[0036] Dinitrosopentamethylenetetramine 5 parts

[0037] Modified sodium bicarbonate 6 parts

[0038] Polyethylene glycol 25 parts

[0039] 8 parts triethanolamine

[0040] Salicylic acid 3 parts

[0041] Zinc stearate 1.5 parts

[0042] Calcium oxide 1 part.

[0043] Wherein, the modified sodium bicarbonate is prepared by the following method: take the following raw materials in parts by weight: 15 parts of sodium bicarbonate, 8 parts of urea, 3 parts of fatty acid, 1.5 parts of dibasic lead phosphite, 5 parts of dodecyl Put the sodium alkylbenzene sulfonate into a high-speed kneader, stir at a high speed for 30 minutes, take it out, dry it and pulverize it, and grind it into a 200-mes...

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Abstract

The invention discloses a foaming agent for NBR sponge rubber. The foaming agent comprises the following raw materials, by weight: 6-12 parts of azobisformamide, 4-8 parts of 4, 4 '-oxydibenzenesulfonyl hydrazide, 2-5 parts of p-toluenesulfonohydrazide, 3-6 parts of DNPT, 4-8 parts of modified sodium bicarbonate, 20-30 parts of polyethylene glycol, 5-10 parts of triethanolamine, 2-5 parts of salicylic acid, 1-2 parts of zinc stearate, and 0.5-1.5 parts of calcium oxide. The foaming agent produced by the invention has excellent foaming capacity and foam stability; and the produced foam has advantages of good temperature adaptability, uniform dispersion, low cost and easiness for usage. The NBR sponge rubber material prepared by the foaming agent has good mechanical performance, small density and fine and uniform pore.

Description

technical field [0001] The invention relates to a foaming agent, in particular to a foaming agent for NBR sponge rubber. Background technique [0002] Nitrile rubber (NBR) has a wider range of service temperature than other rubbers, has good low temperature resistance, and has good chemical stability. Therefore, NBR sponge rubber also has good oil resistance, heat resistance, low temperature resistance and chemical stability. It is widely used in automotive, aerospace, chemical, medical and health fields. The foaming agent is the most important additive in NBR sponge rubber. The type and quantity of the foaming agent have a direct impact on the physical and mechanical properties, foam density, and temperature resistance of the foam. At present, the foaming agent used in NBR sponge rubber has problems such as low foaming ratio and poor stability, which directly affect the performance of rubber products, resulting in low product strength, unstable quality, and low overall te...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/10C08J9/08C08L9/02
Inventor 王本明柯勇艾勇刘一宁徐昌军夏明明
Owner 安徽艾柯泡塑股份有限公司
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