环氧树脂-水性聚氨酯-丙烯酸酯复合乳液的研究  

Study on preparation of aliphatic water-based hybrid emulsion of polyurethane-acrylate by multiple crosslink modification

作　　者：江峰[1] 沈慧芳[1] 陈焕钦[1] 

机构地区：[1]华南理工大学化工与能源学院,广东广州510640

出　　处：《粘接》2007年第1期20-23,共4页Adhesion

摘　　要：以IPDI、聚醚、BDO、DMPA等为原料合成水性聚氨酯分散体，再加入MMA和引发剂，采用核壳乳液聚合法制备脂肪族水性聚氨酯-丙烯酸酯复合乳液。引入小分子交联剂三羟甲基丙烷（TMP）和环氧树脂E-20进行多重交联改性。用傅立叶红外光谱（FTIR）对树脂结构进行了分析。讨论了n（NCO）／n（OH）比值、环氧树脂E-20、TMP、MMA添加量对乳液性能的影响。研究发现，当n（NCO）／n（OH）=（1．3-1．4）：1、E-20质量分数为3％-5％、TMP为1％-3％、MMA为20％-30％时，所制备的PUA乳液综合性能较好。Water-based polyurethane dispersions were synthesized using IPDI, polyether, BDO, DMPA and so on,and then MMA and initiator were added,so aliphatic water-based polyurethane-acrylic hybrid emulsion were prepared by the method of core-shell emulsion polymerization. Low molecular weight cross-linker TMP and epoxy resin E-20 were introduced for crosslink modification. The struc- ture of the resin was analyzed by FTIR. Influence of NCO to OH ratio, epoxy E-20 content, TMP content and MMA content to emulsion performance were discussed. It is found that performance of prepared PUA emulsion is excellent when （ 1.3 - 1.4） ： 1 of NCO to OH ratio, 3% - 5 % of E-20 content, 1% - 3% of TMP content and 20% - 30% of MMA content are fixed.

关 键 词：脂肪族 水性聚氨酯-丙烯酸酯 环氧树脂 三羟甲基丙烷 交联改性 

分 类 号：TQ433.4[化学工程]