金属幕墙用氟碳涂层的性能测定

Problems in Performance Testing of Fluorocarbon Coatings of Metallic Wall Screen and Conntermeasares

涂层面漆清漆树脂体系的鉴定、树脂中聚偏二氟乙烯(PVDF)含量的测定、涂层随角异色现象的仲裁,是目前金属幕墙用氟碳涂层需要解决的几个主要问题,从实际经验出发,提出了现有标准无合理检测方法的措施,较为合理地解决了这些问题。

With a view to the problems in the performance testing of fluorocarbon coatings of metallic wall screen, including verification of the resin systems used in vanishesand top-coats, determination of content of polyvinylidene fluoride ( PVDF) , and arbitration of color variation of coatings with angles, efforts were made to modify currently available methodsspecified in relevant national standards for performance tes-ting of coatings. At the same time, qualitative analysis of the varnishesand top-coats by Fourier transformation infrared (FT-IR) spectrometry and quantitative analysis of the content of PVDF by differential scanning colorimetry were conducted. And the variationin the color of the coatings was examined using a 5-angle spectrophotometer. This would be helpful to resolving the above-mentioned problems concerning the performance testing of the flu-orocarbon coatings of metallic wall screen.