可逆感温变色非织造材料的制备及性能研究

Preparation and property study of reversible thermochromic nonwovens

以非织造材料和感温变色油墨为原料,通过丝网印刷技术制备可逆感温变色非织造材料。测试并分析了丝网印刷前后试样微观形貌和化学结构的变化,讨论了丝网印刷次数对可逆感温变色非织造材料厚度、力学性能、变色性能和皂洗色牢度的影响。采用红蓝复合油墨对非织造材料进行整理,研究人体温度作用下可逆感温变色非织造材料的直观变色效果。结果表明:随着印刷次数的增加,整理后的非织造材料厚度、断裂强力和断裂伸长增加,初始色相加深,完全变色时间延长,皂洗色牢度GS评级提高。人体手指触摸试验结果表明,制备的非织造材料可在3 s内快速变色,具有灵敏的可逆感温变色性能。

Nonwovens and thermochromic ink were used as raw materials to prepare reversible thermochromic nonwovens by screen printing.The chang of micromorphology and chemical structure of samples before and after screen printing were studied and analyzed.The effects of screen printing times on the thickness,mechanical property,color changing property and soaping color fastness of reversible thermochromic nonwovens were discussed.Red and blue composite ink was used for nonwovens finishing.The visual discoloration effect of reversible thermochromic nonwovens under human body temperature was studied and analyzed.The results showed that with the increase of printing times,the thickness,breaking strength and breaking elongation of nonwovens after finishing were increased,the initial hue was deepened,the complete discoloration time was prolongated,and the GS rating of soaping color fastness was improved.The experimental results of human finger touch showed that the thermochromic nonwovens prepared could change color rapidly within 3 s and had sensitive and reversible thermochromic property.