范 传 彦, 史 非, 刘 敬 肖, 徐 龙 权, 刘 素 花, 黄 霞, 钱 金 泰

( 大连工业大学 纺织与材料工程学院, 辽宁 大连 116034 )

Cs0.32WO3粒子水热处理及其透明隔热性能

范 传 彦, 史 非, 刘 敬 肖, 徐 龙 权, 刘 素 花, 黄 霞, 钱 金 泰

( 大连工业大学 纺织与材料工程学院, 辽宁 大连 116034 )

为了进一步提高Cs0.32WO3粒子的近红外遮蔽和透明隔热性能，将溶剂热合成的Cs0.32WO3纳米粉体在低温190 ℃下进行水热处理，研究了乙酸和HF存在条件下水热处理对Cs0.32WO3粒子的晶型、形貌、近红外遮蔽和透明隔热性能的影响。研究结果表明，乙酸和HF共存条件下水热处理不会明显改变Cs0.32WO3粒子的晶型和形貌，且在W与F的物质的量比为1∶0.45条件下进行水热处理所得到的Cs0.32WO3粒子呈现出最好的透明隔热性能。此外，与高温氢气还原热处理相比，低温水热处理可使Cs0.32WO3粒子具有尺寸小且均匀度高的优势，这有利于提高其在涂料中的分散性和透明隔热性能。

铯钨青铜；水热处理；近红外遮蔽；透明隔热

Abstract: In order to improve the near-infrared shielding and transparent heat insulation properties of Cs0.32WO3particles, Cs0.32WO3nano-powders were synthesized by solvothermal method and modified by hydrothermal treatment at lower temperature of 190 ℃. The effects of hydrothermal treatment on the crystal phase, morphology, near-infrared shielding and transparent heat insulation performance of Cs0.32WO3particles under the condition of acetic acid and HF existence were studied, results of which indicated that the crystal structure and morphology of Cs0.32WO3particles changed little under the condition of acetic acid and HF existence at lower temperature (190 ℃), while the Cs0.32WO3particles exhibited best transparent heat insulation performance atn[W]∶n[F]=1∶0.45 hydrothermal treatment. In addition, the Cs0.32WO3particles prepared via hydrothermal treatment had the advantages of being smaller and uniform compared with the reduction heat treatment at higher temperature under H2atmosphere, which was favorable for improving the dispersion in the coating and transparent heat insulation performance of particles.

Keywords: Cs0.32WO3; hydrothermal treatment; near-infrared shielding; transparent heat insulation

0 引 言

随着社会经济的迅猛发展，绿色环保的节能材料的研究已经引起世界各国的广泛关注[1]，纳米透明隔热涂料及其薄膜[2-4]，有望被广泛应用在建筑物门窗、顶棚玻璃、汽车挡风玻璃、船舶玻璃等透明隔热领域。CsxWO3[5-7]作为一种具有高浓度自由载流子的材料，对太阳光中的近红外光显示出强烈的吸收，同时具有较高的可见光透过率，因而在透明隔热领域具有广泛的应用前景[8-10]。玻璃表面涂覆CsxWO3透明隔热涂层不仅可以减少对空调等电器的能源消耗，而且还可以避免阳光对室内物品的辐照损害以及提升人的舒适感等[11]。……