The results showed that for hot air aging properties,DH was superior to RD or BLE,but inferior to 4020 in NR,SBR or BR compounds;

• 结果表明 ,在NR ,SBR和BR胶料中 ,对于耐热空气老化性能 ,防老剂DH的防护效果优于防老剂RD和BLE ,劣于防老剂 40 2 0。