改性石墨烯/氯丁橡胶复合材料的制备及性能

Preparation and properties of modified graphene/neoprene composites

以γ-甲基丙烯酰氧基丙基三甲氧基硅烷(KH-570)改性石墨烯(GE)为分散相加入氯丁橡胶(CR)基体中,混炼制备出改性石墨烯/氯丁橡胶(KH-GE/CR)复合材料.采用傅里叶红外光谱仪,X射线衍射仪和扫描电镜对改性前后石墨烯的结构进行表征,考察了硫化温度、不同含量KH-GE对KH-GE/CR复合材料力学性能和导电性能影响.结果表明:KH-570改性后的GE层间距增大,改善了在CR基体中的分散性;KH-GE/CR复合材料较佳硫化温度为180℃;KH-GE含量为1.5g时力学性能和导电性能良好,拉伸强度、断裂伸长率和弯曲强度较未添加KH-GE分别提高了123%、32%和29%.

γ-methacryloxypropyltrimethoxysilane （KH 570） modified graphene （GE） as a dis persed phase was added neoprene （CR） matrix,and kneaded to prepare a modified graphene/ Neoprene （KH GE/CR） composites. The structures of graphene before and after modifica tion were characterized by Fourier transform infrared spectroscopy, X ray diffraction and scanning electron microscopy. At the same time, the effects of curing temperature and I（H GE content on mechanical properties and electrical conductivity of KH GE/CR composites were investigated. The results showed that the spacing of GE layer increased after KH 570 modification, which improved the dispersibility in CR matrix. The optimum curing tempera ture of KH GE/CR composite was 180 ℃. When the KH GE content was 1.5 phr,the excel lent properties and conductivity were obtained. The tensile strength, elongation at break and flexural strength were improved by 123%,32% and 29% respectively compared with those without KH- GE.