2,5-二甲基-2,5-二叔丁基过氧化己烷对混炼型聚氨酯橡胶性能的影响

Influence of 2,5-Dimethyl2,5-di(tert-butylperoxy) hexane on Property of Blending-Type Polyurethane Rubber

研究了2,5-二甲基-2,5-二叔丁基过氧化己烷(简称双-2,5)对混炼型聚氨酯橡胶的综合性能的影响,并与硫黄硫化的聚氨酯橡胶的性能进行比较。结果表明,添加过氧化物双-2,5的混炼型聚氨酯橡胶的硫化时间较短,扭矩值较高。与硫黄硫化体系相比,以双-2,5为硫化剂时,硫化胶的物理机械性能较低,但可以明显减少聚氨酯橡胶的高温压缩永久变形,且玻璃化温度较低。增加双-2,5的用量,硫化胶的耐油性能得到提高。

The influence of 2,5-Dimethyl-2,5-di （tert-butylperoxy） hexane on the property of blending-type polyurethane（PU） rubber was researched. The property was contrasted with the sulfur curing system. The results showed that the curing time became short and the torque became big with the addition of 2,5-Dimethyl-2,5-di（ tertbutylperoxy） hexane. Compared with the sulfur curing system, curing with the 2,5-Dimethyl-2,5-di（ tert-butylperoxy）, the physical property of PU rubber would be decreased, but the hot compression deformation was reduced and the Ts was lower. With the dosage of 2,5-Dimethyl-2,5-di（tert-butylperoxy） hexane increased, the oil resistance of the PU rubber increased.