制备聚氨酯一丙烯酸酯复合乳液的物料与工艺

介绍了适合于制备聚氨酯-丙烯酸酯(PUA)复合乳液的常规物料及新近开发的物料,包括多异氰酸酯、聚多元醇、乙烯基单体、亲水性物质、中和剂、交联剂、引发剂等。介绍了种子乳液聚合法、原位乳液聚合法和溶液聚合转相法三种典型的制备PUA复合乳液的工艺及其最新进展。指出开发功能性原材料、完善原位乳液聚合法和溶液聚合转相法以及探索新的合成工艺将成为今后研制高性能PUA复合乳液的重要领域。

Raw materials and processes for preparing polyurethane-acrylate hybrid emulsion

Conventional and new raw materials for preparing polyurethane- aery late (PUA) hybrid emulsion are introduced , which are mainly classified as polyisocyanates, polymeric polyols, vinyl monomers, hydrophilic substances, neutralizer, cross-linking agents and initiators.Three typical preparation processes and their current development of PUA hybrid emulsion, seeded emulsion polymerization,emulsion polymerization in situ and phase-inversion solution polymerization,are reviewed.lt is pointed out that, in the future the interests of preparing PUA hybrid dispersions with high properties should be focused on the development of functional raw materials, improvement of emulsion polymerization in situ and phase-inversion solution polymerization and research of new synthetical processes.