9-磷钨酸光致变色玻璃涂层的制备与表征(英文)

Preparation and Characterization of 9-Phosphotungstic Acid Photochromic Glass Coatings

自制的9-磷钨酸与高聚物如聚乙烯吡咯烷酮、聚乙烯醇等在一定温度下的醇溶液中醇解得到混合溶胶样品,采用喷涂法或浸渍涂布法在玻璃基板上成膜,常温干燥得到具有光效应的涂层。透明的玻璃涂层在日光照射下10s变蓝色。用XRD、SEM、UV-可见分光光度计、红外光谱分析仪等对薄膜以及粉末的特性进行了测试。实验结果表明该涂层具有良好的光致变色消色特性。

WO3-Polymer hybrid sol was prepared from self-prepared 9-Tungstophosphate acid based on polyvinylpyrrolidone (PVP) by alcoholysis at a certain temperature. Coatings on glass substrates were obtained by spraying technique and subsequently dried at room temperature. The transparent WO3-Polymer coatings could be transformed to blue after exposed to the sun light for less than 10 s. X-ray diffractometer (XRD) and scanning electron microscope (SEM) analysis were employed to characterize the crystal structure and surface morphology of these coatings. Changes in the visible light transmittance of the thin films were measured with spectrometer irradiated under UV light. The results indicate good photochromic and decoloration behavior of the coatings.