温致变色涂料制备及变色性能研究

Synthesis and Chromatism Properties of Thermochromic Coating

以三芳甲烷类隐色体染料为发色剂,配合显色剂和溶剂合成了适用于织物应用的温致变色涂料。考察了溶剂复配,发色剂、显色剂、溶剂种类对温变涂料颜色及颜色变化的影响。探讨了添加涂料对温变涂料颜色调节作用。结果表明,在温变涂料中添加涂料能有效改变温致变色涂料颜色并且不影响其温致变色能力和变色温度;发色剂、显色剂、溶剂间极性不同会破坏温变涂料温变色能力;制备温变涂料所用溶剂为十六醇与十二醇质量比4∶1和3∶2时,温变涂料变色温度分别为42℃和36℃,说明改变溶剂比例能有效调控温变涂料变色温度。

Thermochromic coating was synthesized using triarylmethane leuco dye as color former and coordinating with color developer and alcohols to realize the application for fabric. The effects of mixed solvents,kinds of color former,color developer and solvents on the color and chromatism of the thermochromic coating were analyzed. The color tenability was discussed by adding coatings into the thermochromic coating. The results show that adding coatings into the thermochromic coating can effectively change the color of the thermochromic coating without changing the chromatism temperature;the thermochromic ability can be undermined if the polarity between the color former,color developer and solvents were different; the color-transition temperature of the thermochromic coating that was synthesized at a mass ratio of hexadecyl alcohol to lauryl alcohol of 4∶1 was 42 ℃. When the mass ratio between hexadecyl alcohol and lauryl alcohol was 3 ∶ 2,the color-transition temperature of the thermochromic coating was 36 ℃,indicating that changing the solvents ratio can effectively control the color-transition temperature of the thermochromic coating.