BTDA和BPDA混合二酐的聚酰亚胺泡沫的制备与表征  

Preparation and characterization of polyimide foam derived from mixed dianhydride of BTDA and BPDA

作　　者：董毅飞 周海军[2] 田伦 李双 肖继君[1] 李彦涛[2] Dong Yifei;Zhou Haijun;Tian Lun;Li Shuang;Xiao Jijun;Li Yantao(School of Materials Science and Engineering,Hebei University of Science and Technology,Hebei Engineering Laboratory of Aviation Lightweight Composite Materials and Processing Technology,Hebei Key Laboratory of Material Near-Net Forming Technology,Shijiazhuang 050018;Institute of Energy Source,Hebei Academy of Sciences,Shijiazhuang 050081)

机构地区：[1]河北科技大学材料科学与工程学院,航空轻质复合材料与加工技术河北省工程实验室,河北省材料近净成形技术重点实验室,石家庄050018 [2]河北省科学院能源研究所,石家庄050081

出　　处：《化工新型材料》2021年第11期85-88,92,共5页New Chemical Materials

基　　金：河北省发改委省级省校合作资助项目(2016049822)。

摘　　要：采用前驱体粉末发泡法,以3,3′,4,4′-二苯甲酮四甲酸二酐(BTDA)、3,3′,4,4′-联苯四羧酸二酐(BPDA)和4,4′-二氨基二苯甲烷(MDA)为原料,制备了一系列的聚酰亚胺泡沫。通过傅里叶红外光谱仪、扫描电镜、热失重分析仪和导热系数测定仪等手段对酯化后的二酐在不同比例下制备的产物形貌、热稳定性、隔热性能等方面进行了表征。结果表明:生成的聚酰亚胺泡沫已完全亚胺化;热失重10%的分解温度均在500℃以上;泡沫的导热系数表明其隔热性能较好。The polyimide foams(PIFs)were prepared by the foaming of precursor powders,which were derived from the reaction of esters of 3,3′,4,4′-benzophenone tetracarboxylic acid dianhydride(BTDA)and esters of 3,3′,4,4′-biphenyltetracarboxylic dianhydride(BPDA)with 4,4′-diaminodiphenylmethane(MDA).The products were characterized by fourier transform infrared spectroscopy(FT-IR),scanning electron microscopy(SEM),thermal gravimetric analysis(TGA)and thermal conductivity tester.The results showed that the foams were completely imidized.The decomposition temperature of 10 wt%of the product was above 500℃.Thermal conductivity data shown that PIFs were good insulation at ambient conditions.

关 键 词：前驱体粉末 聚酰亚胺泡沫 粉末发泡法 

分 类 号：TQ328.9[化学工程—合成树脂塑料工业]