水性聚氨基甲酸酯/黏土奈米複合材料之合成與性質研究

The Synthesis and Properties of Waterborne Polyurethane/Clay Nanocomposites

劉純書(Chun-Su Liu)

指導教授 ： 陳玉惠

中原大學/理學院/化學研究所/碩士(2004年)

https://doi.org/10.6840/cycu200400097

摘要

摘要
本論文是利用聚丁醚二醇(PTMG)、聚(丁二醇己二酸)(PBA) 、異佛爾酮二異氰酸酯(IPDI) 、1,4-丁二醇(1,4-BD) 、雙羥甲基酸(DMPA) 、三乙基胺(TEA) 、乙二胺(EDA)等多種化學原料與水膨潤黏土合成出水性PU/clay奈米複合材料。
本研究主要探討水性PU/ Clay奈米複合材料的吸水性、機械物性、磨耗性質及熱性質。結果顯示製備出之水性PU/Clay奈米複合材料的吸水率會隨著Clay含量增加而增加。所製備之材料藉X-ray及TEM可證實黏土中的矽酸鹽層在水性PU基材之分散情形。
由微差掃描熱量計(DSC)及熱重分析儀(TGA)的結果得知，添加小量的黏土，即可提高高分子玻璃轉移溫度(Tg)及耐熱性質。
另外以萬能拉力機測量其拉伸性質，磨耗試驗機測量耐磨，發現當添加黏土後，水性PU的機械性質及耐磨耗性均明顯提昇。

關鍵字

水性聚胺基甲酸酯 ； 奈米複合材料 ； 黏土

並列摘要

Abstract
In this thesis, a novel segmented waterborne polyurethane/clay nanocomposites, based on poly (tetramethylene) glycol (PTMG) or poly (butylene adipate) glycol (PBA) as soft segment, isophorone diisocyanate as diisocyanate, 1,4-butandiol (1,4-BD) as chain extender, dimethylol propionic acid as potential ionic center, triethyl amine as neutralizer, and ethylene diamine as crosslinker, were reinforced with water swollen clay to give nanocomposites. Mechanical properties, water absorption, abrasion properties and thermal properties of these materials were investigated.
The water absorption of the waterborne polyurethane/clay nanocomposites increase with increasing the content of clay. The dispersion of the silicate layers in the waterborne polyurethane/clay hybrids was characterized by using wide angle X-ray diffraction (WAXD) and transmission electron microscopy (TEM). The glass transition (Tg), thermal stabilities, and degradation temperature of the PU film were significantly increased in the presence of a small amount clay.
The reinforcing effects of clay in mechanical properties of these nanocomposites were examined by Universal Testing machine and abrasion testing machine.

並列關鍵字

nanocomposites ； clay ； waterborne polyurethane

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