【摘要】 为了改善聚酰亚胺的加工性能,以对氨基酚和二氯二甲基硅烷为原料合成了一种含硅二胺活性单体双(4-氨基苯氧基)二甲基硅烷(简写APMSI),采用不同配比的APMSI和4,4’-二氨基二苯醚(ODA)混和胺与均苯四甲酸二酐(PMDA)共缩聚制得含硅聚酰亚胺.采用傅立叶变换红外光谱(FTIR)、核磁共振谱(1H和13C)、熔点测定仪对对乙酰氨基酚、双(4-氨基苯氧基)二甲基硅烷(APMSI)的结构进行了表征,其总产率达到67%.采用傅立叶变换红外光谱仪(FTIR)、差热分析仪(DTA)、热重分析仪(TG)和溶解实验分别对纯聚酰亚胺和含硅聚酰亚胺的结构、热性能和溶解性进行了表征.结果表明,含硅聚酰亚胺较纯聚酰亚胺耐热性低,但随含硅二胺单体增多而升高;其玻璃化转变温度随含硅二胺单体增多而大幅下降;其溶解性相对于纯聚酰亚胺有大幅提高.更多还原

【Abstract】 To improve the processability of polyimide(PI),taking p-amino-phenol and dimethyl dichlorosilane as raw materials,an activated monomer of bis(p-aminophenoxy)dimethylsilane(APMSI) containing silicon was prepared.Then the silicone-containing PI was synthesized from APMSI,pyromellitic dianhydride(PMDA) and 4,4’-oxydianilline(ODA) with different contents in N,N’-dimethylacetamide(DMAC).The structure of p-acetaminophenol and APMSI was characterized by Fourier transform infrared spectroscopy(FTIR),nuclear magnetic resonance spectroscopy(1H NMR and 13C NMR) and melting point apparatus,and the total yield of APMSI was 67%.The construction,thermal property and solution property of pure PI and silicone-containing PI were characterized by FTIR,differential thermal analyzer(DTA),thermo-gravimetric analyzer(TGA) and solution experiment,respectively.Results illustrate that compared with the pure PI,the silicone-containing PI has lower heat resistance and highly improved dissolubility,and its heat resistance becomes higher with the increasing content of activated monomer containing silicon,while its glass transition temperature is decreased greatly.更多还原