利用超亲水材料进行构筑物温度调节的应用研究

以钛酸丁酯为钛源,采用溶胶-凝胶法,在玻璃基板上制备了TiO2-PDMS复合薄膜,对其亲水性能进行了考察.在自制的构筑物模型表面制备TiO2-PDMS复合薄膜,在室外环境下,通过散水在构筑物表面形成极薄的水膜层,利用水膜的快速蒸发进行构筑物的温度调节.结果表明：在有散水的条件下,构筑物表面可长期保持超亲水状态,涂膜与未涂膜的构筑物相比,其内部温度平均低7℃左右,实现了构筑物内部温度的有效调节.

Study on Application of Super-Hydrophilic Materials in Temperature Control on the Structure Model Surface

TiO2-PDMS Composite film was prepared with Ti（O-Bu）2 and hydroxy-terminated polydimethyl- siloxane（PDMS） on a glass substrate by sol-gel method. The hydrophilic property was determined by contact angle measuring instrument. In the outdoor environment, TiO2-PDMS film was prepared on the homemade structure model, and then the valve was open to make water flow through its surface. The thin water film was formed and it could take away heat quickly through vaporation. The results showed the structure model with coating could maintain super-hydrophilie state for a long time,its inside temperature was about 7 ℃ lower than that without coating in a bulk water condition,which realized the efficient temperature control of the structure model.