"Preparation and properties of epoxidized Eucommia ulmoides gum grafted with silicon dioxide by wet method"

Abstract

"Firstly, Eucommia ulmoides gum (EUG) was epoxidized to obtain epoxidized EUG (EEUG). Then, EEUG grafted silicon dioxide (SiO2) composite (EEUG-g-SiO2) was prepared by wet graf-ting SiO2 onto EEUG. The structure and properties of EEUG-g-SiO2 composite were studied. The results showed that compared with EUG/SiO2 and EEUG/SiO2 mechanical blends, the dispersion of nano SiO2 in EEUG-g-SiO2 vulcanizate was significantly improved and the mechanical properties were greatly improved. Compared with EUG/SiO2 vulcanizates, the tear strength of EEUG-g-SiO2 vulcanizate increased by 30.9%, fatigue resistance increased by 575%, and abrasion decreased by 94%. Compared with EEUG/SiO2 vulcanizate, the tear strength of EEUG-g-SiO2 vulcanizate increased by 10.5%, fatigue resistance increased by 68.6%, abrasion decreased by 72%, and the compression heat build-up decreased significantly."

Keywords

• epoxidized eucommia ulmoides gum， silicon dioxide， graft， crystallinity， curing cha-racteristics， physical and mechanical property， compression heat build-up， fatigue resistance，