杜仲胶
2.Abrasion resistance and flex crackingresistance of vulcanizate reduce seriously along with curing degree increasing, in order to get vulcanizate that has fine abrasion resistance and flex cracking resistance, control sulfur content strictly that is less than 3phr.
3.The result shows that the formula (NR 50phr, BR 30phr, Gutta-Percha 20phr, stearic acid 5phr, magnesia 2phr, zinc oxide 2phr, antioxidant D 1phr, high abrasion fine furnace black 50phr, aromatic oil 5phr, sulfur 2phr, accelerant DM 2phr) is the most excellent.

