不同防老剂并用种类对EPDM共混胶耐老化性能的影响  

Effects of the combination of different antioxidants on the aging resistance of EPDM blended rubber

作　　者：张作鑫 于祥[1] 邓涛[1] 

机构地区：[1]青岛科技大学高分子科学与工程学院

出　　处：《橡塑技术与装备》2020年第3期12-14,共3页China Rubber/Plastics Technology and Equipment

摘　　要：研究了不同防老剂并用种类对EPDM共混胶耐老化性能的影响,研究表明,防老剂并用种类对共混胶的硫化程度有一定的影响,对焦烧时间、工艺正硫化时间影响不大;老化后,拉伸强度变化率较好的是防老剂445/NBC和防老剂2246/445,扯断伸长率较高的是防老剂445/DDA和防老剂2246/MB,综合性能来看,防老剂2246/MB和防老剂445/DDA两者并用效果较好。The effects of different types of antioxidants on the aging resistance of EPDM blended rubber were studied. Research showed that the combination of antioxidants has a certain effect on the vulcanization degree of the blended rubber, and has little effect on the burn time and process vulcanization time;After aging, there were antioxidants 445/NBC and antioxidants 2246/445 that have a better change rate in tensile strength, and antioxidants 445/DDA and antioxidants 2246/MB that have higher elongation at break. In terms of comprehensive performance, the combination of antioxidant 2246/MB and antioxidant 445/DDA is better.

关 键 词：防老剂并用 EPDM 耐老化性能 

分 类 号：TQ333.4[化学工程—橡胶工业]