- 學位論文
聚硼矽氧烷 /環氧樹脂複合材料之製備及探討
Preparation and characterization of polyborosiloxane/epoxy composites
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摘要
本研究是藉由兩起始物(3-glycidyloxypropyl)-trimethoxysilane (GPTMOS)、硼酸製備成聚硼基矽氧烷化合物(polyborosiloxane，PGB)，其中GPTMOS具有環氧官能基，添加入環氧樹脂中能緊密結合，之後再添加具有高熱傳導性的無機物氧化鋁，並與硬化劑 Methylhexahydrophthalic Anhydride (MHHPA) 及 催化劑 1-(2-cyanoethyl)-2-ethyl-4-methylimidazole (2E4MZ-CN)加熱固化，製備成環氧樹脂複合材料，並進行複合材料的熱穩定性質、熱傳導性質、透光性質的研究。從研究結果發現，只添加10%本實驗合成PGB之環氧樹脂複合材料，比沒有添加之環氧樹脂的熱穩定性佳，熱裂解溫度明顯提升30℃。而且當加入改質氧化鋁後，高分子材料的導熱性質也穩定提升，但其透光度會隨著無機物加入而降低。但只添加PGB的環氧樹脂複合材料透光度不受影響，即使PGB添加量高達30%時，環氧樹脂複合材還是可以維持原本的透明情況。
並列摘要
In this study, polyborosiloxane (PGB) was prepared by two starting materials: (3-glycidyloxypropyl)-trimethoxysilane (GPTMOS) and boric acid. Moreover, the epoxide group on the GPTMOS will be closely bonded with epoxy resin as adding the PGB into epoxy resin. Furthermore, the thermally conductive matter: aluminum oxide was added into the polymer matrix. The epoxy was cured by hardener: methylhexahydrophthalic anhydride (MHHPA) and catalyst: 1-(2-cyanoethyl)-2-ethyl-4-methylimidazole (2E4MZ-CN). Through these procedures, the epoxy composite was obtained. The thermal stability and conductive properties, and light transmission properties of the composites were investigated. The pyrolysis temperature of the composites containing 10% PGB was increased by 30℃. After adding the aluminum oxide, thermal conductive properties of polymer materials were enhanced, but the light transmission properties were reduced. The results reveal that light transmission properties of epoxy were not affected by the addition of PGB. Epoxy composites can still have the original transparent situation even the content of PGB was 30%.
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