CAJ | 학술논문

以3,3’,4,4’-联苯四甲酸二酐(BPDA)和4,4’-氨基二苯醚(ODA)为合成单体,1,3,5-三(4-氨基苯氧基)苯(TAB)为交联剂,合成了聚酰亚胺溶胶,最后经CO2超临界干燥得到气凝胶。研究了溶胶配方对聚酰亚胺气凝胶密度、收缩率、孔结构、拉伸强度及热导率等性质的影响规律,制备得到低密度、小孔径、高比表面积、低热导率和较好柔韧性能的气凝胶。
이3,3’,4,4’-련분사갑산이항(BPDA)화4,4’-안기이분미(ODA)위합성단체,1,3,5-삼(4-안기분양기)분(TAB)위교련제,합성료취선아알용효,최후경CO2초림계간조득도기응효。연구료용효배방대취선아알기응효밀도、수축솔、공결구、랍신강도급열도솔등성질적영향규률,제비득도저밀도、소공경、고비표면적、저열도솔화교호유인성능적기응효。
Polyimide sol were prepared based on the ODA,ODPA and crosslinker TAB in NMP,polyimide aero-gels were obtained via supercritical CO2 drying.Study on the effects of sol formula and density,shrinkage,por-ous structure,BET surface area,tensile strength,and thermal conductivities of polyimide aerogels,to prepared low density,small pore diameter,high BET surface area,low thermal conductivity aerogels.