Abstract: In order to improve the color fastness to rubbing and colour fastness to sunlight of pigment printed fabrics, polytetrafluoroethylene (PTFE) emulsion was used as seed particles, and butyl acrylate (BA), methacrylic acid (MAA) and methyl methacrylate (MMA) were used as comonomers to prepare polytetrafluoroethylene/polyacrylate (PTFE/PAcr) composite latex via emulsion polymerization, which was applied to the pigment printing of polyester fabrics (Oxford fabric). The effects of PTFE content on the hydrophobicity and thermal properties of the composite latex film, K/S value and color fastness to rubbing of printed fabrics were investigated. The results show that PTFE/PAcr composite emulsion particles present a core-shell structure. The hydrophobic property and thermal stability of the composite latex film increase with the increase of PTFE mass fraction. As for pigment printed polyester fabrics using the obtained composite latex as binder, the K/S value is 13.2, and the dry and wet color fastness to rubbing both reach grade 5, which indicates such fabrics have better color depth and color fastness to rubbing than those of printed fabrics using traditional polyacrylate latex binder. More importantly, the color depth and color fastness of the printed fabric do not change significantly after 100 hours’ continuous sunlight test, suggesting the printed fabrics have good weather resistance.

Key words:

 , composite latex, PTFE, pigment printing, rubbing , fastness, colour , fastness to , sunlight

摘要：

为了提高印花织物的耐摩擦色牢度和耐日晒牢度，以聚四氟乙烯（PTFE）乳液为种子粒子、以丙烯酸丁酯（BA）、甲基丙烯酸（MAA）和甲基丙烯酸甲酯（MMA）为共聚单体，采用乳液聚合法制备聚四氟乙烯/聚丙烯酸酯（PTFE/PAcr）复合胶乳，并应用于涤纶织物（牛津布）的涂料印花。考察了引入不同质量分数PTFE对复合胶膜的疏水性、热性能及对印花织物K/S值、耐摩擦色牢度的影响。结果表明：PTFE/PAcr复合胶粒呈现核壳结构，随着PTFE质量分数的增加，复合胶膜疏水性能增加，热稳定性提高。以复合乳胶为黏合剂的涂料印花涤纶织物K/S值为13.2、干湿摩擦色牢度均达到5级，较传统聚丙烯酸酯黏合剂的印花织物具有更好的色深和耐摩擦色牢度；经100 h连续日晒测试，印花织物的色深和色牢度未发生明显变化，具有良好的耐候性。

关键词:

复合乳液, 聚四氟乙烯, 涂料印花, 摩擦牢度, 耐日晒牢度