双组分水性聚氨酯漆的配制及性能
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摘要
用水性羟基聚丙烯酸酯分散体、亲水性多异氰酸酯固化剂3598T、消泡剂TEGO Foamex810、润湿剂BYK-104E和流平剂KST-203等原料调制出一种性能优良的双组分水性聚氨酯漆。考察了不同的羟基树脂、固化剂、消泡剂、异氰酸酯指数对涂膜性能的影响,以及固化剂的用量对适用期的影响。结果表明,适用期的长短与固化剂的用量关系不大,主要与固化剂本身的性质有关。当异氰酸酯指数为1. 3时,涂膜的耐水性、耐乙醇擦拭性、硬度、光泽等综合性能最好。
A kind of two-component waterborne polyurethane paint with excellent properties was prepared from water-based hydroxyl polyacrylic dispersion,water-dispensible polyisocyanate curing agent 3598 T,defoamer TEGO Foamex 810,wetting agent BYK-104 E and leveling agent KST-203. The effects of different hydroxyl resins,curing agents,defoamers and isocyanate index on the film properties,and the effects of curing agent dosage on the activation period were investigated. The results showed that the pot life had little to do with the amount of curing agent,but had relation with the nature of curing agent itself. When the isocyanate index was 1.3,the coating had the best comprehensive properties such as water resistance,ethanol wiping resistance,hardness and gloss.
A kind of two-component waterborne polyurethane paint with excellent properties was prepared from water-based hydroxyl polyacrylic dispersion,water-dispensible polyisocyanate curing agent 3598 T,defoamer TEGO Foamex 810,wetting agent BYK-104 E and leveling agent KST-203. The effects of different hydroxyl resins,curing agents,defoamers and isocyanate index on the film properties,and the effects of curing agent dosage on the activation period were investigated. The results showed that the pot life had little to do with the amount of curing agent,but had relation with the nature of curing agent itself. When the isocyanate index was 1.3,the coating had the best comprehensive properties such as water resistance,ethanol wiping resistance,hardness and gloss.
引文
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[2]闫福安.双组分水性聚氨酯漆的研制[J].涂料工业,2003,33(5):37-39.
[3]杨昌跃,曹红菊,杨丽,等.水性聚氨酯水器漆胶膜物性的研究[J].聚氨酯工业,2001,16(4):22-25.
[4]孔霞,罗春晖,瞿金清,等.水性双组分聚氨酯涂料的活化期研究[J].华南理工大学学报:自然科学版,2009,37(12):85-89.
[5]董玉婷,张民管,李方书.水性聚氨酯涂料固化剂的选择[J].涂料技术与文摘,2010,31(6):29-31.
[6]魏欣,隋泽华,刘洋子建,等.异氰酸酯指数对阴离子型水性聚氨酯性能的影响[J].聚氨酯工业,2018,33(2):40-42.
[7]蔡福全,周书光,田志胜,等.新型有机硅水性聚氨酯皮革涂饰剂的研究与开发[J].中国皮革,2011(15):12-14.
[8]任东文,徐智,孙祥山.高性能双组分水性聚氨酯工业面漆的研制[C].贵阳:全国功能性氟硅材料和涂料市场开发及应用“瓮福蓝天杯”技术研讨会,2009.
[9]许智煌,张青海,黄雪红.脂肪族水性聚氨酯的合成研究[J].聚氨酯工业,2009,24(1):40-42.
[10]陈中华,樊小丽.双组分水性聚氨酯汽车面漆的制备与性能研究[J].上海涂料,2012,50(10):3-8.
[11]鲁亚青,张楠,王文宗,等.聚醚改性硅油消泡剂消泡机理研究[J].有机硅材料,2010,24(2):80-84.
[12]于国玲,王学克.水性涂料用助剂的选择[J].现代涂料与涂装,2019,22(1):29-31,34.