采用聚乙烯吡咯烷酮对氧化石墨烯(GO)进行改性,制备了改性氧化石墨烯(PGO),研究了PGO对天然橡胶(NR)、羧基丁腈橡胶(XNBR)及丁苯橡胶(SBR)硫化胶性能的影响.结果表明,PGO在NR、XNBR和SBR中均能较好地分散.当加入3份PGO时,PGO/NR硫化胶的拉伸强度、撕裂强度和导热系数比GO/NR硫化胶分别提高了82.0％、51.1％和6.5％;PGO/XNBR硫化胶的撕裂强度和导热系数比GO/XNBR硫化胶提高了53.8％和25.7％,而对拉伸强度影响不大;PGO/SBR硫化胶的拉伸强度、撕裂强度和导热系数比GO/SBR硫化胶分别提高了72.0％、24.2％和14.4％.%Modified graphene oxide (PGO) was prepared using polyvinylpyrrolidone modifing graphene oxide (GO).The effects of PGO on properties of natural rubber(NR),carboxy nitrile rubber(XNBR) and styrene-butadiene rubber (SBR) vulcanizates were investigated.The results showed that PGO could well dispersed in NR,XNBR and SBR.When PGO was 3 phr,the tensile strength,tear strength and thermal conductivity of PGO/NR vulcanizates increased by 82.0％,51.1％ and 6.5％ respectively,compared to those of GO/NR vulcanizates.When PGO was 3 phr,the tear strength and thermal conductivity of PGO/XNBR vulcanizates increased by 53.8％ and 25.7％ compared to those of GO/XNBR vulcanizates,while there was no significant effect on tensile strength.And the tensile strength,tear strength and thermal conductivity of PGO/SBR vulcanizates increased by 72.0％,24.2％ and 14.4％ respectively compared to those of GO/SBR vulcanizates,when PGO was 3 phr.
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