- 學位論文
聚氨基甲酸酯/金屬氧化物抗紫外線複合材料之研究
A Study on the UV-cut Properties of PU/ Metal Oxide Particles Composite Films
摘要
本研究主要目的是將三種金屬氧化物(CeO2、Nd2O3、ZnO)分別摻混至聚氨基甲酸酯( Polyurethane)，以製備具抗紫外線特性之複合薄膜。研究中採用IPTEOS的矽烷偶合劑，對三種無機粉末進行表面改質，使有機化的金屬氧化物能與PU的相容性獲得改善，增加無機物的分散性與添加量。 本研究探討不同無機填充物對於抗紫外線的效果，利用FT-IR檢測有機化金屬氧化物官能基的變化；TGA了解材料的熱穩定性；另外，亦將材料進行UV-Visible檢測儀的光學性質分析，了解材料的可見光透光性、抗紫外線強度等光學性質。 實驗結果顯示，本研究之抗紫外線聚氨基甲酸酯之製品優異性質不會因時間而有所衰減；且隨著無機微粒添加量的增加，紫外線遮蔽率有增加的趨勢。無機粉末添加量5 wt%、膜厚0.03mm即可100%遮蔽紫外光且具有優良的透光性可達95%以上。在耐熱性質方面，添加三種無機粉末皆可使PU複合薄膜的耐熱性提高，Td上升5~10℃。
並列摘要
This thesis researched the manufacture of Metal Oxide particles / PU composite film with UV-cut effects by polymer blend methods. The research used the coupling agent (IPTEOS) to modify surface of three kinds of inorganic powder in order to enhance the dispersion of inorganic powder in the polymer matrix. The ultraviolet absorption of the composite film with different inorganic powder was investigated. FT-IR was used to investigate the evolution of chemical bonds of modified powder. The degradation temperature was measured by TGA. UV-visible was used to evaluate the transmittance and UV-shielding ability of hybrid materials. Experimental results indicated that superior UV-cut properties of the polyurethane can not decay by the time. And increasing the quantity of the powder of film, the ultraviolet attenuation will increase. With the film thickness 0.03mm and inorganic powder 5 wt%, ultraviolet can be cut off perfectly and the transmittance of the visible light is over 95 %. The data shows that three inorganic powders added in PU improved the thermal degradation temprature , and also maintained well thermal properties.