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林产化学与工业 ›› 2004, Vol. 24 ›› Issue (3): 78-82.

• 研究报告 • 上一篇    下一篇

蓖麻油水性聚氨酯树脂的合成与性能的研究

瞿金清, 陈焕钦   

  1. 华南理工大学 化工所, 广东 广州 510640
  • 收稿日期:2003-09-24 修回日期:1900-01-01 出版日期:2004-09-30 发布日期:2004-09-30

STUDIES ON SYNTHESES AND PROPERTIES OF WATERBORNE POLYURETHANE RESIN FROM CASTOR OIL

QU Jin-qing, CHEN Huan-qin   

  1. Institute of Chemical Engineering, South China University of Technology, Guangzhou 510640, China
  • Received:2003-09-24 Revised:1900-01-01 Online:2004-09-30 Published:2004-09-30

摘要: 采用蓖麻油(C.O.)、聚醚(N210)、二异氰酸甲苯酯(TDI)和二羟甲基丙酸(DMPA)反应合成了聚氨酯脲水分散液,研究了C.O./N210的质量比、亲水单体含量、NCO/OH摩尔比和NH/NCO摩尔比对聚氨酯乳液及涂膜性能的影响,并应用傅立叶红外光谱仪(FT-IR)测定反应产物的结构。研究发现C.O.可提高水性聚氨酯涂膜的物理机械性能和耐水性,当C.O./N210的质量比为1:1、NCO/OH摩尔比为1.6:1、DMPA添加量为5.5%、NH2/NCO摩尔比为0.50:1时合成的水性聚氨酯涂料具有较好的成膜性、较高的硬度、优异的附着力和较好的耐水、耐油性

关键词: 水性聚氨酯, 蓖麻油

Abstract: Waterborne polyurethane(WPU) was prepared by the reaction of castor oil(C.O.) with polyether glycol(N 210),dimethoxypropionic acid(DMPA) and toluene diisocyanate(TDI).The effects of mass ratio of castor oil,N 210,DMPA content,molar ratios of NCO to OH and NH2/NCO on the properties were investigated.The structure of WPU was characterized by FT-IR.It was found that mechanical properties and water resistance of WPU coating film were increased with addition of castor oil.At 1:1-2 mass ratio of castor oil to N 210,1.6 molar ratio of NCO/OH,(5.5%) DMPA content and 0.50 molar ratio of NH2/NCO, the castor oil waterborne polyurethane has excellent film-forming property,high hardness,good resistances to water and petrol,and excellent adhesion to base materials.

Key words: waterborne polyurethane, castor oil

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