本論文主要研究奈米二氧化矽的添加對PVB/玻璃陶瓷分別在氮氣與空氣下、不同添加比例、以及不同操作條件的熱解動力分析。以熱重分析儀(Thermo-gravimetric analysis,TGA)觀察複合材料的熱重損失曲線,並以傅立葉紅外線光譜儀(Fourier Transform Infrared Spectroscopy)分析其熱解氣體的光譜變化。再者,利用Arrhenius關係式所推導的動力方程式解析解,導出以非線性加熱方式進行實驗,同時依據等轉化率的原則,分析樣品的熱解動力現象。實驗結果發現奈米二氧化矽的添加對PVB/玻璃陶瓷在氮氣與空氣下的熱解都有影響。且奈米二氧化矽/PVB/玻璃陶瓷在氮氣與空氣下都是屬於多重反應現象,熱解動力參數可由本論文所提出之分析方法求得,由動力三參數反映出裂解機構的複雜性。
Kinetic analysis of thermal degradation of poly(vinyl butyral)(PVB)/glass ceramic with nano-silica was investigated in different atmosphere, composition, and operating conditions. Kinetic triplets and reaction pathways of the composite sample were analyzed by thermogravimetry (TG) and Fourier-Transform Infrared spectroscopy (FT-IR) measurements using the proposed algorithm. Results of the kinetic analysis revealed that the thermal degradation mechanism of the composites is multiple reaction steps. In nitrogen atmosphere, the degradation temperature of the composites is higher because of the presence of nano-silica. In air atmosphere, the effects of nano-silica on PVB/ glass ceramic thermal degradation were verified by detecting the volatile gas.