纺织学报 ›› 2015, Vol. 36 ›› Issue (11): 82-86.

• 染整与化学品 • 上一篇    下一篇

羟基硅油改性水性聚氨酯涂料的制备及其印花性能

  

  • 收稿日期:2014-11-21 修回日期:2015-07-24 出版日期:2015-11-15 发布日期:2015-11-10

Syhthsis and printing performances of waterborne polyurethane coating modified by hydroxyl silicone oil

  • Received:2014-11-21 Revised:2015-07-24 Online:2015-11-15 Published:2015-11-10

摘要:

为探究羟基硅油对改性水性聚氨酯涂料印花性能的影响,制备了不同质量分数的羟基硅油改性聚氨酯,并进行了红外表征,分析了羟基硅油质量分数对改性聚氨酯涂料的粘度、固化速度、耐摩擦牢度、印花图案清晰度的影响。结果表明,当羟基硅油的质量分数为10%时,异氰酸根与羟基硅油的反应较完全,羟基硅油质量分数在10%-20%之间,水性聚氨酯固化膜的耐水性、柔韧性、耐化学性较好。当羟基硅油质量分数增大时,水性聚氨酯涂料的粘度降低、固化速度增加,耐摩擦牢度变好,印花图案清晰度降低。

Abstract:

In order to explore the pigment printing performances of waterborne polyurethane modified by hydroxyl silicone oil, polyurethanes containing different concentrations hydroxyl silicone oil were synthesized. The structure of the modified polyurethanes was characterized by FTIR. The viscosity, curing speed, rubbing fastness and printing pattern definition of polyurethane coating modified by hydroxyl silicone oil concentrations were analyzed. The results show that the reaction of isocyanate and hydroxyl silicone oil was sufficient when the concentration of hydroxyl silicone oil was 10%. The water resistance, flexibility and chemical resistance of waterborne polyurethane curing film were excellent while the concentration of hydroxyl silicone oil was between 10%-20%. The viscosity was decreased, curing speed was increased, rubbing fastness was improved, and printing pattern definition was reduced of waterborne polyurethane coating with the increase of the concentration of hydroxyl silicone oil.

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