石墨烯气凝胶/白炭黑/丁苯橡胶复合材料的制备与性能研究

Graphene aerogel（GA） was prepared by sol-gel and freeze drying method，and silica/GA composite filler（s-GA） was prepared by GA and silica complexing. The s-GA/silica/styrene-butadiene rubber（SBR） composites were prepared by mechanical blending and their properties were studied. The results showed that，silica was successfully complexed in the GA，the agglomeration of graphene lamellas was decreased effectively，t₉₀ of the s-GA/silica/SBR composites were shortened，and the wet skid resistance were improved. When the dosage ratio of GA/silica was 1/5，the tensile strength and elongation at break of the s-GA/silica/SBR composites were the highest. As the dosage of silica in s-GA increased，the wear resistance of s-GA/silica/SBR composites were improved.