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"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."