环氧树脂/改性氧化石墨复合材料的制备及性能研究  

Study on preparation and performance of epoxy resin/modified graphite oxide composites

作　　者：秦玉芳 徐随春 赵春宝 

机构地区：[1]南京信息职业技术微电子学院,南京210023

出　　处：《化工新型材料》2014年第11期91-93,共3页New Chemical Materials

基　　金：南京信息职业技术学院重点课题资助项目(YKJ12-003);江苏省自然科学基金资助项目(BK2011838);江苏省"333工程"科研项目资助计划(BRA2012119)

摘　　要：采用改进Hummers法制备了氧化石墨,用硅烷偶联剂KH550对其进行改性,并制备了环氧树脂/氧化石墨复合材料。通过导热系数测定、热重分析(TG)、扫描电子显微镜(SEM)对复合材料进行分析和表征。结果表明:加入改性后的氧化石墨可以有效提高复合材料的导热系数,含2.0wt%改性氧化石墨的复合材料导热系数为0.36 W/m·K,比纯树脂材料的导热系数提高16.1%;复合材料热分解温度比纯环氧树脂提高了49℃;改性氧化石墨的加入能够提高复合材料的断裂韧性。Graphite oxide （GO） was prepared from natural flake graphite by the modified Hummers method. GO was modified with silane coupling agent KH550. The EP/GO-KH550 composites was prepared with epoxy resin and modified GO. The composites were characterized by Fourier-transform infra-red spectra（FTIR） ,thermal conductivity, thermal gravimetric （TG） and scanning electron microscopy （SEM） . The results showed that the addition of modified GO can improved the thermal conductivity of composites. When the mass fraction of GO-KH550 was 2.0%, the thermal conductivity of composite increased to 0.36 W/m · K, which was increased by 16.1%. The decomposition temperature increased by 49℃ than that of epoxy resin and the addition of modified GO powder can improve the fracture toughness of the composites.

关 键 词：环氧树脂 氧化石墨 复合材料 导热系数 

分 类 号：TB332[一般工业技术—材料科学与工程]