基于水性纳米乳液制备聚氨酯超薄膜  

Preparation of Polyurethane Ultra-thin Film from Waterborne Nano-sized Latex

作　　者：洪宁 樊枭 王传博 马禹[1] HONG Ning;FAN Xiao;WANG Chuan-Bo;MA Yu(State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,College of Materials Science and Engineering,Donghua University,Shanghai 201620,China)

机构地区：[1]纤维材料改性国家重点实验室,东华大学材料科学与工程学院,上海201620

出　　处：《当代化工》2020年第10期2121-2124,共4页Contemporary Chemical Industry

基　　金：中央高校基本科研业务费专项资金资助,自由探索(面向大形变薄膜器件)基金项目(项目编号:19D110608)

摘　　要：合成了水性聚氨酯纳米乳液,利用旋涂法成功制备了厚度小于100 nm的聚氨酯超薄膜,并初步探讨了旋涂时间对薄膜厚度及表面形貌的影响。结果表明:乳液成膜与溶液成膜过程相似,都包含流体力学减薄和挥发固化两个阶段;由于乳液的非均相性质,超薄膜表面粗糙度较高。Waterborne nano-sized polyurethane latex(nWPU)was synthesized,and then it was used to successfully prepare ultra-thin polyurethane films of thickness less 100 nm by spin coating.Meanwhile,the effect of spinning time on the film thickness and surface morphology of film was studied.The results showed that the film formation from latex includes two stages:hydrodynamic thinning and evaporation,which is similar as that from solution.However,due to the heterogeneous property of latex,the surface roughness of ultra-thin film was relatively higher.

关 键 词：水性纳米乳液 聚氨酯 超薄膜 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]