水合肼对水性聚氨酯自消光树脂性能的影响
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摘要
以聚四氢呋喃二元醇(PTMG)、异佛尔酮二异氰酸酯(IPDI)、2,2-二羟甲基丙酸(DMPA)、1,4-丁二醇(BDO)、三乙胺(TEA)、水、水合肼等为基本原料,制备出一系列水性聚氨酯自消光树脂乳液。利用红外光谱、激光粒度仪和扫描电镜等测试方法对乳液的结构和性能进行了分析表征,并研究了水合肼加入量对乳液性能的影响。结果表明:WPU膜表面微观结构符合消光机理。当n(—NCO)/n(—OH)=1. 25、w_(DMPA)=2. 0%、w_(BDO)=0. 5%、w_(水合肼)=40%时制备的聚氨酯膜消光性能最优。
A series of waterborne polyurethane (WPU) self-matting resin emulsion were prepared with polytetramethylene glycol (PTMG),isophorone diisocyanate (IPDI),2,2-dimethylol propionic acid (DMPA),1,4-butanediol (BDO),three triethylamine (TEA),water and hydrazine hydrate as main raw materials. The structure and properties of emulsion were characterized by infrared spectroscopy,laser particle size analyzer and scanning electron microscopy methods,and the effects of different amount of hydrazine hydrate on the properties of emulsion were studied.The results show that WPU film surface microstructure fits with the extinction mechanism. When n (—NCO)/n (—OH) = 1. 25、w_(DMPA)= 2. 0%、w_(BDO)= 0. 5%、w_(hydrazine hydrate)= 40%,the WPU film has a good matting performance.
A series of waterborne polyurethane (WPU) self-matting resin emulsion were prepared with polytetramethylene glycol (PTMG),isophorone diisocyanate (IPDI),2,2-dimethylol propionic acid (DMPA),1,4-butanediol (BDO),three triethylamine (TEA),water and hydrazine hydrate as main raw materials. The structure and properties of emulsion were characterized by infrared spectroscopy,laser particle size analyzer and scanning electron microscopy methods,and the effects of different amount of hydrazine hydrate on the properties of emulsion were studied.The results show that WPU film surface microstructure fits with the extinction mechanism. When n (—NCO)/n (—OH) = 1. 25、w_(DMPA)= 2. 0%、w_(BDO)= 0. 5%、w_(hydrazine hydrate)= 40%,the WPU film has a good matting performance.
引文
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[2]ATHAWALE V D,KULKARN IM A.Synthesis,characterization,and comparison of polyurethane dispersions based on highly versatile an ionomer,ATBS,and conventional DM[J].Journal of Coatings Technology and Research,2010,7(2):189-199.
[3]ATHAWALE V D,N IMBALKAR R V.Emulsifyable airdrying urethanealkyds[J].Progress in Organic Coatings,2010,67(1):66-71.
[4]李辉.环境友好水性聚氨酯涂料的种类与应用研究[J].渤海大学学报(自然科学版),2010,31(1):11-16.
[5]许飞,杨劲松,马春风,等.木器用水性亚光涂料的制备及性能研究[J].中国涂料,2013,28(6):34-38,59.
[6]KIRYU N,YAMAMOTO S,TOMIKI M,et al.Matted film containing a matting agent consisting of an organic filler and an inorganic filler[P]:US,5316843.1994-05-31.
[7]王金权,邢洋洋,徐霞,等.PVC革表面消光聚氨酯涂料的制备及应用[J].聚氨酯工业,2013,28(5):32-35.
[8]孔庆刚,钱海燕,孙兴菊,等.二氧化硅消光剂的合成与表征[J].中国粉体技术,2012,18(2):50-54.
[9]Du Y C,Shi S L,Bu C Y,et al.Effect of particle size distribution of calcined diatomites on the extinction performance[J].Particulate Science and Technology,2011,29(4):368-377.
[10]尹力力,宁霞,朱聪慧.聚氨酯树脂预聚物的控制-二正丁胺法的探讨[J].皮革化工,1998,15(2):36-37.
[11]董永兵,周艳明,吉轩,等.SiO2改性WPU消光皮革涂饰剂的制备及性能[J].聚氨酯工业,2017,32(3):37-40.
[12]Wang L F,Ji Q,Glass T E,et al.Synthesis and characterization of organosiloxane modified segmented polyether polyurethanes[J].Polymer,2000,41:5 083-5 093.
[13]李书卿,申屠勇敢,韩茂清,等.水性聚氨酯涂饰剂的性能分析[J].皮革科学与工程,2007,17(1):48-53.
[14]郑雯,增文波,李建军,等.水性聚氨酯消光树脂的制备与表征[J].精细化工,2013,30(12):1 403-1 408.
[15]李建军,增文波,郑雯,等.水性聚氨酯消光树脂结构与性能的研究[J].涂料工业,2013,43(10):16-21.