臺灣博碩士論文加值系統

本研究以二氯二甲基甲矽烷和對-胺基酚合成含矽的二胺-雙(對胺基苯氧
基)二甲基矽烷(BADMS). 再以此二胺化合物(BADMS)和芳香族二胺4,4-二
胺基二苯醚(ODA)與3,3,4,4-二苯甲酮四梭酸二矸(BTDA)共聚合成數種組
成之含矽聚醯亞胺.以DSC,TGA,DMA及TMA分析聚醯亞胺的熱性質. 此外,電
氣性質,機械性質,吸濕率及本性黏度也分別於以測定.聚醯胺酸的本性黏
度,聚醯亞安的機械性質和熱性質(包括玻璃轉移溫度,熱裂解溫度,熱膨脹
係數)有隨著矽含量的增加而下降的趨勢. 相反地,高分子鏈中導入矽氧基
卻可提高其絕緣性和耐濕性.

Silicon-containing diamine,bis(p-aminophemoxy)dimethylsilane(
BADMS),wassynthesized from dichlorodimethylsilane and p-
aminophenol. Several composition of polyimides wrer
copolymerized by using silicon-containingdiamine(BADMS) and
4,4-diaminodiphenyl ether(ODA),with
3,3,4,4-benzophenonetetracaboxylic dianhydride(BTDA).Thermal
properties of polyimides were evaluated by DSC,TGA,DMA,TMA.
Furthermore,the dielectric properties,mechanical properties,
moisture sorptionand inherent viscosity were also measure.It was
found that inherent viscosity of polyimide precursor(PAA),
mechanical,and thermal properties including glass transition
temperature(Tg),thermal decomposition tempterature,and
coefficient of thermal expansion ofco-polyimides decreases with
increasing siloxane moiety content respectively.In contrast,the
dielectric resistance and moisture sorption were improved by
introducing siloxane moiety polymer chain.