蓖麻油改性聚醚型水性聚氨酯乳液的性能  

Preparation and properties of castor oil-modified waterborne polyurethane emulsion

作　　者：蒋洪权[1,2,3] 宋湛谦 商士斌[1,2,3] 尹延柏[1,2,3] 

机构地区：[1]中国林业科学研究院林产化学工业研究所 [2]国家林业局生物质化学利用国家工程实验室 [3]国家林业局林产化学工程重点开放性实验室,江苏南京210042

出　　处：《化工进展》2010年第2期285-288,共4页Chemical Industry and Engineering Progress

基　　金：引进先进林业科学技术创新项目(2006-4-C03)

摘　　要：以聚醚、甲苯二异氰酸酯(TDI)、一缩二乙二醇、蓖麻油为主要原料,二羟甲基丙酸(DMPA)为亲水扩链剂,三乙胺为中和剂制备了稳定的阴离子水性聚氨酯乳液(WPU),研究了NCO/OH摩尔比、DMPA及蓖麻油的加入量对WPU的耐水性、稳定性和力学性能的影响,结果表明:改性后的乳液具有较好的稳定性,适量的蓖麻油可提高胶膜的拉伸强度及耐水性。当聚醚与蓖麻油质量比为7︰3、DMPA为5%、NCO与OH摩尔比为1.3时,WPU综合性能最好。Stable waterborne polyurethane （WPU） was synthesized from toluene diisocyanate （TDI）,a polyether polyol and dihydroxymethylpropionic acid （DMPA） using castor oil as the crosslinking agent. Effects of NCO/OH,DMPA and castor oil on the water-resistance,stability and mechanical properties were investigated. Results showed that the castor oil modified WPU has better stability,and suitable amount of castor oil can improve the tensile strength and water-resistant properties of the film from WPU. The obtained WPU has excellent balanced properties when prepared with 7：3 mass ratio of polyether to castor oil,5% mass percent of DMPA,and 1.3 molar ratio of NCO to OH.

关 键 词：蓖麻油 水性聚氨酯 交联改性 

分 类 号：TQ630.4[化学工程—精细化工]