摘要
对采用硫黄硫化体系和过氧化物硫化体系的丁腈橡胶(NBR)和三元乙丙橡胶(EPDM)进行无氧和有氧二段硫化,并对硫化胶的物理性能进行对比。结果表明:在适当温度与时间下进行二段硫化可以在一定程度上改善硫化胶的物理性能,NBR比EPDM硫化胶、硫黄硫化体系比过氧化物硫化体系硫化胶的改善效果更为显著;无氧和有氧二段硫化的硫化胶物理性能差异不大;氮气对流模具法二段硫化的硫化胶质量损失主要源于增塑剂挥发,这在一定程度上影响了硫化胶的物理性能。
Nitrile butadiene rubber(NBR) and ethylene-propylene-diene rubber(EPDM)with sulfur curing system and peroxide curing system were vulcanized by post vulcanization with or without oxygen, and the physical properties of the vulcanizates were compared.The results showed that,post vulcanization at appropriate temperature and time could improve the physical properties of the vulcanizates to a certain extent,and the improvement was more significant for NBR vulcanizate and sulfur cured vulcanizate.There was no significant difference in the physical properties between the vulcanizates post cured with or without oxygen.The mass loss of the vulcanizate cured by post vulcanization using nitrogen convection mold method was mainly due to the volatilization of plasticizer,which affected the physical properties of the vulcanizates to a certain extent.
作者
梁明松
何聪
杨大卫
王丽
郑添来
LIANG Mingsong;HE Cong;YANG Dawei;WANG Li;ZHENG Tianlai(Xiamen Elastec Corp,Xiamen 361100,China)
出处
《橡胶工业》
CAS
2019年第7期537-541,共5页
China Rubber Industry
