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
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[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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