热敏变色纱窗的制备

Preparation of thermochromic window screens

将热敏变色微胶囊材料采用丝网印花的方式印制在纱窗上,制得印花图案颜色随温度变化而变化的热敏变色纱窗。研究热敏变色微胶囊用量、增稠剂用量、烘燥时间及烘燥温度对印花图案颜色深度、耐皂洗色牢度.耐干湿摩擦色牢度的影响。当热敏变色微胶囊质量分数为7%,增稠剂质量分数为6%,烘燥温度80℃,烘燥时间6min时,制得的热敏变色印花图案得色深,耐干摩擦色牢度达到5级.耐皂洗色牢度和耐湿摩擦色牢度可达到4~5级。热敏变色微胶囊的变色是一个渐变的过程,红色与黄色热敏变色微胶囊的变色区间分别为24~28℃和30~33℃。

The thermochromic microcapsules are printed onto window screens by screen printing.And a thermosensitive color-changing screen with a printed pattern color that changes with temperature changes is prepared.The effects of the dosages of microcapsule and thickener,curing time and temperature on the color depth,color fastness to soaping,color fastness to dry and wet rubbing are studied.When the amount of microcapsules is 7%,the amount of thickener is 6%,the drying temperature is 80℃,and the drying time is 6 min,the color depth is high,and the color fastness to soaping is up to Grade 5,the color fastness to dry and wet rubbing is up to Grade 4~5.The discoloration of the thermochromic microcapsules is a gradual process,and the discoloration intervals of the red and yellow thermochromic microcapsules are 24-28℃ and 30-33℃,respectively.