环氧树脂改性水性聚氨酯的制备及性能研究
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摘要
以异佛尔酮二异氰酸酯(IPDI)、聚己内酯二醇(PCL-2000)为主要原料,2,2-二羟甲基丁酸(DMBA)为亲水性扩链剂,乙二胺(EDA)为后扩链剂,通过添加环氧树脂E44/E51(质量比为1/1)对水性聚氨酯进行改性,合成环氧树脂改性水性聚氨酯乳液。讨论了环氧树脂加入量对聚氨酯各项性能的影响。结果表明,环氧树脂的加入使得水性聚氨酯膜的热稳定性、拉伸强度有一定程度的增加。
The waterborne polyurethane emulsions modified by epoxy resin( E-44、E-51 mass ratio was 1/1)were synthesized using isophorone disocyanate( IPDI) and polycaprolactone glycol( PCL-2000) as the main materials,using dimethylolbutyric acid( DMBA) as the hydrophilic chain extender,and ethylenediamine as the post chain extender. The effect of the amount of epoxy on the properties of polyurethane was discussed. The results showed that the addition of epoxy resin could effectively increase the thermal stability and tensile strength of the waterborne polyurethane films.
The waterborne polyurethane emulsions modified by epoxy resin( E-44、E-51 mass ratio was 1/1)were synthesized using isophorone disocyanate( IPDI) and polycaprolactone glycol( PCL-2000) as the main materials,using dimethylolbutyric acid( DMBA) as the hydrophilic chain extender,and ethylenediamine as the post chain extender. The effect of the amount of epoxy on the properties of polyurethane was discussed. The results showed that the addition of epoxy resin could effectively increase the thermal stability and tensile strength of the waterborne polyurethane films.
引文
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[2]郑新艺,秦颖,王强强.水性聚氨酯涂料专利态势分析[J].硅酸盐通报,2017,36(10):3336-3341.
[3]刘兴然,唐飞.水性聚氨酯的市场前景及生产工艺[J].化工设计,2017,27(6):19-22.
[4] LI Y,YANG Z,QIU H,et al. Self-aligned graphene as anticorro-sive barrier in waterborne polyurethane composite coatings[J].Journal of Materials Chemistry A,2014,2(34):14139-14145.
[5] MALUCELLI G,ALONGI J,GIOFFREDI E,et al. Thermal,rheological,and barrier properties of waterborne acrylic nanocom-posite coatings based on boehmite or organo-modified montmoril-lo-nite[J]. Journal of Thermal Analysis&Calorimetry,2013,111(2):1303-1310.
[6]曾淼,曹有名.环氧树脂改性水性聚氨酯乳液的研究[J].聚氨酯工业,2017,32(5):56-59.
[7]汤旸,赖慧颖,王伟烽,等.涂料用环氧改性聚酯型水性聚氨酯的合成[J].广东化工,2016(9):6-8,3.
[8]郑飞.环氧树脂改性水性聚氨酯的制备和研究[J].聚氨酯工业,2016,31(6):51-53.
[9]曾俊,王武生,阮德礼,等. DMBA与DMPA聚氨酯乳液主要性能比较[J].皮革化工,1999(5):19-22.