含金屬氧化物光致變色高分子混成薄膜之製備及其在建築物節能的應用

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Title:	含金屬氧化物光致變色高分子混成薄膜之製備及其在建築物節能的應用
Other Titles:	Preparation of Metal Oxide Photochromism Polymer Hybrid Films and Their Application on Energy-Saving Buldings
Authors:	張正良
Contributors:	淡江大學化學工程與材料工程學系
Keywords:	光致變色;近紅外光吸收;金屬氧化物;高分子官能基;有機-無機混成薄膜;photochromics;NIR- absorbing;metal oxide;polymer functional groups;organic-inorganic hybrid film
Date:	2009
Issue Date:	2010-04-15 16:07:52 (UTC+8)
Abstract:	根據國內建築冷房負荷分析得知：太陽光經由窗戶進入室內以及室內照明產生之冷房負荷所導致之空調用電約佔總用電15 %，幾乎是建築空調用電的一半。全球正面臨能源急速短缺的問題，能儘快開發有效阻隔近紅外光並具有高可見光穿透率的光學薄膜，是深具研究意義的課題。近年來智慧型變色材料在建築窗玻璃的開發應用上扮演重要的角色，智慧型變色材料可以藉由電能、熱能或是光能使材料產生變色效果，進而控制戶外光熱進入建築物內部之能量，降低建築內部照明與冷氣之耗電量，達到節能舒適之目的。電致變色材料運用在商業大樓的玻璃窗上相當廣泛，但建築玻璃的面積大，在製備與應用上並不容易。電致變色之驅動力為電壓，仍要消耗電能來達到阻隔近紅外光的效果。本研究選用光致變色型金屬氧化物做為無機物，添加其他金屬氧化物如TiO2，增加光致變色型金屬氧化物表面電子數，提升近紅外光吸收效果。並添加不同高分子如聚乙烯醇、壓克力高分子等，探討不同高分子官能基對近紅外光吸收的影響。光致變色材料可反覆控制顏色變化達到阻隔近紅外光目的，在耐候性質較佳。本實驗室曾利用WCl6 製備混價鎢錯合物近紅外光吸收劑與其光學薄膜，缺點在耐候性質較差。本計畫擬用光致變色型金屬氧化物製備光學薄膜，改善耐候性問題。 According to domestic analysis of building burden with air conditioner, the sunlight which goes indoors through the window and indoor illuminations cause the consumption of air conditioner electricity about 15% of total electric consumption. It is nearly about half of electric consumption in a building. However, the main electricity partialy comes from petroleum, therefore, how to save electric energy is a critical issue. Furthermore, if near infrared could be blocked by such a rather transparent product, which might become a meaningful research to be involved and finally resolving the global shortage of energy. Except organic and inorganic additives, intelligent smartchromics materials which are created and applied to windows has become a major role recently. In addition, the intelligent discolored material can change its color through electricity, heat energy, or light, and then control the access of how much light and energy can get through into the house. Eventually, the consumption of electricity includes illumination and air conditioner can be controlled, also, energy can be saved. Elctrochromics materials are comprehensively applied to business building’s windows, but the windows are always too huge to be applied to Elctrochromics materials. Besides, for the purpose of energy saving, Elctrochromics materials need voltage to run them, thus, in order to block the near infrared, consumption of electricity is still needed. Therefore, in this research, the key point here is to find other substance to displace voltage and use ultraviolet rays of the sunlight to make photochromics materials change their colors, afterward, near infrared can be blocked, also, the consumption of electricity can be much lesser than before. Eventually, energy is saved. To sum up, in this research, photochromics metal oxides are chosen as inorganic, and then make them absorb near infrared effectively by adding other metal oxides and organic polymer. In addition, what’s the different influence on near infrared absorbing with metal oxides and polymer functional groups will be deeply discussed. Moreover, those hybrid film will be examined in detail with different aspects.
Appears in Collections:	[Graduate Institute & Department of Chemical and Materials Engineering] Research Paper

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