摘要
以蓖麻油和IPDI(异佛尔酮二异氰酸酯)溶于St(苯乙烯)、BA(丙烯酸丁酯)中制备聚氨酯预聚体,再以MDEA(N-甲基-二乙醇胺)和BDO(1,4-丁二醇)扩链,后用环氧树脂E-44为改性剂,制得EWPUA(环氧树脂改性蓖麻油基阳离子型水性聚氨酯-丙烯酸酯)复合乳液。研究结果表明:环氧基成功地引入到聚合物分子链中;当w(E-44)=4%时,EWPUA乳液具有优异的表面施胶性能。以w(EWPUA)=1%进行表面施胶,纸张施胶度达54 s,抗张强度增加至33.4 N/mm^2,耐破度由89 kPa增加至166 kPa,接触角由82°增加至128°,拉伸强度由5.08 MPa增加至8.86 MPa。
The polyurethane prepolymer was prepared from castor oil and isophorone diisocyanate(IPDI)dissolved in styrene(St)and butyl acrylate(BA). Then expanded by N-methyl diethanolamine(MDEA)and 1,4-butanediol(BDO)and modified with epoxy resin E-44 as the modifier,the epoxy resin modified castor oil-based cationic waterborne polyurethane acrylate(EWPUA) composite emulsion was prepared. The research results showed that the epoxy group was successfully introduced into the polymer molecular chain. When w(E-44)=4%,the EWPUA emulsion had excellent surface sizing performance. Surface sizing with w(EWPUA)=1% had 54s sizing degree,tensile strength increased to 33.4 N/mm^2,bursting strength increased from 89 kPa to 166 kPa,contact angle increased from 82 degrees to 128 degrees,and tensile strength increased from 5.08 MPa to 8.86 MPa.
作者
王静会
辛华
蔡俊超
杨江鹏
Wang Jinghui;Xin Hua;Cai Junchao;Yang Jiangpeng(Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry,Ministry of Education,Shaanxi University of Science & Technology,Xi'an 710021,China)
出处
《中国胶粘剂》
CAS
北大核心
2019年第1期31-34,43,共5页
China Adhesives
基金
国家自然科学基金(51603117)
陕西省自然科学研究计划项目(2018JM5120)
关键词
水性聚氨酯
蓖麻油
环氧树脂
表面施胶剂
力学性能
waterborne polyurethane
castor oil
epoxy resin
surface sizing agent
mechanical property
