低聚聚酰亚胺(SPI)改性的聚酰亚胺(PI)固化物的制备和性能
朱国豪, 陈平, 徐计雷, 孙慧敏

Preparation and Properties of Curd Polyimide Modified by Oligomeric Polyimide
ZHU Guohao, CHEN Ping, XU Jilei, SUN Huimin
图2 二硝基化合物BNFPS和二胺基化合物APFPS的红外光谱和APFPS的核磁谱
Fig.2 FTIR spectra of nitro monomer BPFPS and diamine monomer APFPS (a) and 1H NMR spectrum of APFPS (b)