文献类型：期刊文献

中文题名：聚三唑/石墨烯复合材料的制备与性能研究

英文题名：Preparation and properties of polytriazole/graphene composites

作者：刘强[1];万里强[1];张路路[1];叶绿原[1];黄发荣[1]

机构：[1]华东理工大学材料科学与工程学院特种功能高分子材料及相关技术教育部重点实验室,上海200237

年份：2017

卷号：32

期号：1

起止页码：33

中文期刊名：热固性树脂

外文期刊名：Thermosetting Resin

收录：CSTPCD;;北大核心:【北大核心2014】；CSCD:【CSCD2017_2018】；

语种：中文

中文关键词：聚三唑树脂;石墨烯;复合材料;耐热性;导电性;导热性

外文关键词：polytriazole resin; graphene; composite; heat resistance; electrical conductivity; thermal conductivity

摘要：采用间氨基苯乙炔(APA)功能化改性氧化石墨烯(GO),通过X射线衍射分析,红外光谱和X光电子能谱等手段证明APA已经成功接枝到GO表面,制得改性氧化石墨烯(GOAPA)。借助超声波作用使得GOAPA均匀分散在聚三唑单体中,用原位聚合法制备聚三唑/石墨烯(PTA/GOAPA)复合材料。采用透射电子显微镜考察了GOAPA在基体树脂中的分散情况,通过示差扫描量热分析、动态力学热分析、热重分析和导热、导电性测试等后研究了GOAPA的添加量对PTA树脂固化行为、PTA/GOAPA复合材料性能的影响。结果表明,GOAPA的加入不影响PTA树脂的固化行为,与纯的PTA树脂相比,当GOAPA的添加质量分数为0.1%时,复合材料Tg达到最高为242℃,氮气中Td5为355℃,较纯PTA树脂分别提高了31℃和11℃。当GOAPA添加质量分数为1.0%时,PTA/GOAPA复合材料的导热系数提升了81%,电导率提升了75%。
The graphene oxide（GO）was functionalized modified by m-aminophenylacetylene（APA）. The X-ray diffraction（XRD）,Fourier transform infrared spectroscopy（FTIR）and X-ray photoelectron spectroscopy（XPS）analysis results proved that the APA was successfully grafted onto the GO surface and the modified graphene oxide（GOAPA）was prepared.The GOAPA was homogeneously dispersed in the monomers of polytriazole（PTA）by ultrasonic wave and the polytriazole/graphene（PTA/GOAPA）composites were prepared by in-situ polymerization. The dispersion of GOAPA in matrix resin was investigated by transmission electron microscopy. The effects of the addition of GOAPA on the curing behavior of PTA resin and properties of PTA/GOAPA composites were studied by differential scanning calorimetry,dynamic mechanical thermal analysis,thermogravimetric analysis and tests of thermal conductivity and electrical conductivity. The results showed that the addition of GOAPA had no effect on the curing behavior of PTA resin. When the mass fraction of GOAPA was 0.1 %,the Tgand Td5 in nitrogen of the composites was 242 ℃ and 355 ℃,increased by 31 ℃ and 11 ℃,respectively compared with those of pure PTA resin. When the mass fraction of GOAPA was 1.0 %,the thermal conductivity of PTA/GOAPA composites was improved by 81 % and the electrical conductivity was increased by 75 %.