UV固化聚氨酯-丙烯酸酯水性上光油的合成  

Synthesis of UV-curable polyurethane-acrylate waterborne varnish

作　　者：黄怡[1] 张旭东[1] 董凡[1] 钱帆[1] 田金鹏[1] 

机构地区：[1]湖南大学化学化工学院,长沙410082

出　　处：《化工新型材料》2012年第5期65-67,77,共4页New Chemical Materials

摘　　要：以甲苯二异氰酸酯(TDI)、1,4-丁二醇(BDO)、聚醚二元醇(DL-1000)、二羟甲基丙酸(DMPA)和甲基丙烯酸羟乙酯(HEMA)为主要原料,合成纸张上光油UV固化聚氨酯-丙烯酸酯(PUA)乳液。用傅里叶红外光谱仪(FTIR)和激光纳米粒度仪等对其进行了表征,讨论了TDI/DL-1000摩尔比、-COOH含量、NCO/OH摩尔比和光引发剂等因素对乳液及涂膜性能的影响。研究表明,TDI/DL-1000的摩尔比为4,-COOH含量为2.1%(wt),NCO/OH的摩尔比为1.5时,制得的乳液的外观好,具有较高的光泽度和硬度,良好的耐水性和柔韧性等优异性能。使用TPO和184复配光引发剂且用量为3%(wt,下同)时光油固化速度最佳。The waterborne polyurethane-acrylate emulsion for varnish was successfully synthesized with toluene diisocya- nate（TDI） ,polyether binary alcohol （DL-1000）, dimethylol propionic acid （DMPA） and hydroxyethyl methacrylate （HEMA） as the main rnaterials. It was characterized by Fourier transform infrared spectroscopy （FTIR） and laser nanometer particle size analy- zer etc. The influences of n（TDI）/n（DL-1000）, content of -COOH, n（NCAD）/n（OH） and photoinitiator on emulsion and film prop- erties were studied. The results indicated that when the n（TDI）/n（DL-1000）, content of -CA3OH and n（NCO）/n（OH） reached 4, 2. lwt%, and 1.5 respectively, the emulsion obtained good appearance and outstanding performance such as high gloss and hard- hess,excellent water resistance and flexibility etc. The appropriate photoinitiator was a compounding of TPO and 184, whose a- mount of the total resin weight was about 3wt% and the UV curing rate was the best.

关 键 词：UV固化 聚氨酯-丙烯酸酯 水性 纸张上光油 

分 类 号：TQ638[化学工程—精细化工]