氰酸酯树脂/氧化石墨片复合材料的制备与性能研究  

Properties and preparation of cyanate ester resin/graphite oxide composites

作　　者：赵春宝[1,2] 苏磊[1] 杨绪杰[1] 汪信[1] 

机构地区：[1]南京理工大学教育部软化学与功能材料重点实验室,江苏南京210094 [2]南京信息职业技术学院微电子学院,江苏南京210046

出　　处：《功能材料》2013年第16期2301-2304,2308,共5页Journal of Functional Materials

基　　金：江苏省博士后科研计划资助项目(1001015B);江苏省基础研究计划资助项目(BK2011838);江苏省"333工程"科研计划资助项目(BRA2012119);江苏省基础研究计划资助项目(BK2012869)

摘　　要：采用十二胺对氧化石墨片进行表面改性,通过红外光谱(FT-IR)、X射线衍射(XRD)和核磁共振谱(NMR)对改性后的氧化石墨片(GO-DDA)结构进行表征。将GO-DDA引入氰酸酯树脂体系,制备了氰酸酯(CE)/氧化石墨片复合材料,着重研究了GO-DDA用量对氰酸酯固化反应及复合材料导热与绝缘性能的影响。DSC结果表明,GO-DDA对氰酸酯树脂固化反应有明显的促进作用,可降低树脂的固化温度。复合材料的热导率和体积电阻率测试结果表明,GO-DDA的加入能显著提高氰酸酯树脂的导热性能,当GO-DDA加入量为1.0%时,复合材料的热导率比纯CE树脂材料提高了48%,而且复合材料仍具有良好的电绝缘性能。复合材料的SEM结果表明,少量GO-DDA的加入还有利于改善复合材料的断裂韧性。Graphite oxide（GO） was modified with dodecylamine and characterized by Fourier transtorm infrarecl spectroscopy （FT-IR）, X-ray diffraction （XRD） and nuclear magnetic resonance spectroscopy（NMR）. The modified graphite oxide （GO-DDA） was incorporated into cyanate ester（CE） systems to prepare CE/GO-DDA composites. The effects of GO-DDA amounts on the curing reaction of cyanate ester, thermal conductivity and insulation performance of the composites were investigated emphatically. Results of DSC showed that the addi- tion of modified graphite oxide could facilitate the curing reaction of cyanate ester and decrease the curing tem- perature of cyanate ester. The experimental results of thermal conductivity and insulation performance indicated that GO-DDA provided significant enhancement of thermal conductivity of cyanate ester composites, adding 1.0wt% GO-DDA achieving a 48% increase in thermal conductivity. The composite （1.0wt% of GO-DDA） al- so had a good insulation performance. Moreover, the addition of small amount of GO-DDA could facilitate to improve fracture toughness of the CE composites.

关 键 词：氰酸酯树脂 氧化石墨 复合材料 表面改性 

分 类 号：TB332[一般工业技术—材料科学与工程]