聚氨基甲酸酯彈性體/中孔洞分子篩奈米複合材料之合成及鑑定

Synthesis and Characterization of Polyurethane Elastomer /Mesoporous Molecular Sieves nanocomposites

康永進(Yang-Chin Kang)

指導教授 ： 鄭吉豐

中原大學/理學院/化學研究所/碩士(2003年)

https://doi.org/10.6840/cycu200300683

摘要

本研究是利用MCM-41（中孔洞分子篩）、NMCM-41（奈米中孔洞分子篩）和Silica取代黏土，製備PU奈米複合材料。本論文第一步是利用polyol, toluene diisocyanate, diethylene glycol, ethyl acetate等多種化學原料合成聚氨基甲酸酯（主劑），第二步是將孔洞性無機材在電磁攪拌下慢慢加入分散於PU主劑中混合均勻，第三步將PU硬化劑加入主劑中混合均勻，此混合物溶劑除去後，即可得PU/中孔洞分子篩複合材料。藉由一系列分析測試探討particle(顆粒)大小和孔洞效應產生的影響；經實驗證明加入particle(顆粒)無機材料會大幅提升PU的熱穩定性、楊氏係數（Young's modulous）和儲存模數（Storage modulous）。這些現象是由於中孔洞分子篩的孔洞效應和高接觸面積。

關鍵字

聚氨基甲酸酯 ； 中孔洞分子篩

並列摘要

Polyurethane nanocomposites were prepared by using mesoporous materials of micropaticle, nanoparticle of MCM-41 and silica instead of clay. In this thesis, a novel segmented polyurethane / mesoporous material nanocomposite based on polyol, toluene diisocyanate, diethylene glycol, ethyl acetate, and mesoporous material. Mechanical properties, about mesoporous material in PU results in a large increase in the modulus as comfirmed by DMA studies. From TGA data, increasing of clay content will shift Td to a much higher temperature. These phenomena is due to porous effect and high contacted area from mesoporous molecular sieves.

並列關鍵字

mesoporous ； polyurethane

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