梳状聚氨酯/聚丙烯酸异冰片酯杂化乳液的合成与性能  

Synthesis and Properties of Comb-Branched Water-Borne Polyurethane/Polyisobornyl Acrylate Hybrid Emulsions

作　　者：陈勇军[1] 罗远芳[1] 邓湘华[1] 刘芳[1] 贾德民[1] 

机构地区：[1]华南理工大学材料科学与工程学院,广东广州510641

出　　处：《高分子材料科学与工程》2010年第10期1-4,共4页Polymer Materials Science & Engineering

基　　金：广东省自然科学基金团队项目(039172)

摘　　要：用含刚性环状结构丙烯酸酯改性水性聚氨酯,通过乳液聚合法制备了具有互穿网络(IPN)结构的梳状聚氨酯/聚丙烯酸异冰片酯杂化乳液。讨论了丙烯酸异冰片酯对梳状水性聚氨酯乳液性能的影响。红外谱图结果表明杂化乳液中丙烯酸异冰片酯反应完全。所形成的IPN结构对提高梳状水性聚氨酯的力学强度、热稳定性、耐热性有显著效果,但对粘接性能改善不利。随着丙烯酸异冰片酯单体含量增加,梳状聚氨酯/聚丙烯酸异冰片酯复合物力学强度、热稳定性、耐热性和耐水性增加,但粘接性能显著降低。Comb-branched waterborne polyurethane/polyacrylate （CWPU/PA） hybrid emulsions were prepared by interpenetrating polymerization net method. The factors which had effect on the properties of the films casted from the emulsion were discussed. Fourier transform infrared spectrum（FT-IR） results show that isobornyl acrylate monomer in colloidal particles is polymerized completely in polyisobornyl acrylate. The interpenetrating polymer network （IPN） of CWPU/PA should be responsible for the sharp reduction of adhesion. The mechanical property,thermal stability and heat-resistance of CWPU/PIA hybrids increase and the adhesion of CWPU/PIA hybrids decreases with increasing isobornyl acrylate（IBOA）content.

关 键 词：梳状聚合物 水性聚氨酯 丙烯酸异冰片酯 杂化乳液 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]