改性碳纤维/有机硅复合材料的制备及力学性能研究  

Preparation and mechanical property of modified CFs-VTPS composite

作　　者：王莉[1] 黄应军[2] 周柏青[1] 黄荣华[1] 张燕 Wang Li;Huang Yingjun;Zhou Baiqing;Huang Ronghua;Zhang Yan(School of Power&Mechanical Engineering,Wuhan University,Wuhan 430072;Institute of Advanced Technology,Wuhan University,Wuhan 430072;Xi\an Modern Chemistry Research Institute,Xi\an 710000)

机构地区：[1]武汉大学动力与机械学院,武汉430072 [2]武汉大学先进技术研究院,武汉430072 [3]西安近现代化工研究所,西安710000

出　　处：《化工新型材料》2019年第12期50-53,共4页New Chemical Materials

摘　　要：碳纤维是制备高性能树脂基复合材料最有前途的增强材料之一。为提高碳纤维与复合材料的界面性能,使用乙烯基三叔丁基过氧硅烷(VTPS)对碳纤维表面进行改性,并通过扫描电子显微镜和傅里叶变换红外光谱仪研究了改性方法对碳纤维表面结构的影响,考察了碳纤维添加量对复合材料力学性能的影响。结果表明,改性后的碳纤维表面引入了乙烯基、羟基和羧基等活性基团,同时保持了纤维的形貌。引入的乙烯基能够参与交联反应,促进硫化过程。此外,改性后的碳纤维能有效增强复合材料的力学性能,随着碳纤维添加量的提高,复合材料的力学性能得到显著增强。Carbon fibers are the most promising reinforcement for high performance composites.To improve the interfacial properties of carbon fibers(CFs)reinforced composites,an innovative and simple functionalized strategy was proposed by using vinyl-tri-(peracetic-ter-butyi)-silane(VTPS)coated carbon fiber surface.The surface topography of modified carbon fibers by VTPS was detected by scanning electron microscopy(SEM).The compositions of the CFs surface were characterized by fourier transform infrared spectroscopy(FT-IR).The effects of carbon fiber addition on the mechanical properties of composites were investigated.The mechanical properties of the silicone rubber were tested by tensile testing machine.FT-IR of CFs confirmed that the surface of carbon nanofibers were introduced the Si—CHCH2groups which can participate in the crosslinking process,carboxyl and the hydroxyl groups.After modification,the surface of CFs-VTPS had no obvious damage by SEM.Moreover the mechanical property of the composites was enhanced greatly.At the same time,with the increase of carbon fiber,the mechanical properties of composites were improved as well.

关 键 词：碳纤维 乙烯基三叔丁基过氧硅烷 改性 力学性能 

分 类 号：TB332[一般工业技术—材料科学与工程]