Preparation of New Antioxidant HT443 and Its Application in Sidewall Compound of Steel-belted Radial Tire
The preparation of the new antioxidant HT443 and its application in the sidewall compound of steel-belted radial tires were studied.The results showed that compared with the antioxidant 4020 compound,the Mooney scorch time of the antioxidant HT443 compound was extended,the curing speed was faster,the physical properties of the vulcanizate were basically comparable and the anti discoloration property was improved.When the dosage ratio of antioxidant HT443/4020 was 2/1,the serious problem of discoloration caused by antioxidant 4020 migration could be improved,which improved the appearance quality of the tire.
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