聚碳酸酯型水性聚氨酯(下)  

Polycarbonate-based waterborne polyurethanes

作　　者：叶青萱 

机构地区：[1]黎明化工研究设计院有限责任公司,河南洛阳471000

出　　处：《粘接》2014年第11期81-86,共6页Adhesion

摘　　要：（接上期）3.2.1以聚碳酸芳酯制备PCDL-WPU PCDL型PU在耐热及耐水解性方面是PU中最佳的耐久等级,作为耐久性膜、汽车和家具用人造皮革涂层材料（尤其是水性涂料）、胶粘剂等被广泛应用。但目前广泛市售的聚碳酸酯二醇,主要是由1,6-己二醇合成所得,其缺点：（1）因系结晶体,常温下为蜡状,无流动性,操作困难;（2）制得的PU软段的凝集性高,低温时的柔韧性、伸长率、弯曲度以及回弹性欠佳,限制其广泛应用;（3）所得PU溶液的黏度高,成型或涂敷时操作性差。The characteristcs,preparation methods and main application fields of the polycarbonate-based waterborne polyurethanes are reviewed briefly. The influence of different raw materials,formulations,synthetic methods, etc. on the product performance are described. In order to further improve their properties, the modifying methods using silicone,nano-material as well as carbon nano-tube and UV curing are also introduced.

关 键 词：聚碳酸酯二醇 水性聚氨酯 酯型 耐水解性 水性涂料 涂层材料 人造皮革 耐久性 

分 类 号：TQ433.432[化学工程]