高阻隔PVA涂布液的制备及性能  

Preparation and Properties of High Barrier Coating Liquid of PVA

作　　者：唐龙祥[1] 王安锋[1] 刘春华[1] 方华高[1] 方治齐[1] 

机构地区：[1]合肥工业大学化工学院,安徽合肥230009

出　　处：《现代塑料加工应用》2011年第6期18-20,共3页Modern Plastics Processing and Applications

摘　　要：用自制改性剂通过溶液共混法制得高阻隔聚乙烯醇(PVA)涂布液,对涂布液黏度、吸水性、与基材的附着力及复合薄膜的阻隔性能进行了测试。结果表明,与未改性PVA涂布液相比,通过改性能有效减小PVA涂布液随时间和温度变化黏度增大的弊端;改性PVA涂布液与基材具有良好的附着力,可直接在聚对苯二甲酸乙二醇酯(PET)、双向拉伸聚丙烯(BOPP)、聚乙烯(PE)等薄膜表面涂覆;改性涂布液的吸湿率比纯PVA的小;改性PVA复合薄膜阻隔性能优良。The high barrier coating liquid of polyvinyl alcohol （PVA） was prepared with the self-restraint agent via solution blending method. The viscosity and water ab- sorption of coating liquid, the adhesion between coating liquid and substrate, the barrier properties of the composite films were studied. The results show that in comparison with unmodified coating liquid of PVA, the shortcoming of increasing viscosity with changes of time and temperature is weaken by modification. The modified coating liquid of PVA can be coated onto the surfaces of polyethylene （PE）, biaxially oriented poly- propylene （BOPP）,polyethylene terephthalate （PET） directly due to the well adhesion between coating liquid and substrate. Moreover, the water uptake of modified coating liquid is smaller than that of pure PVA, and the modified PVA films possess an excel- lent performance in barrier.

关 键 词：聚乙烯醇 涂布液 黏度 附着力 阻隔 

分 类 号：TQ320.7[化学工程—合成树脂塑料工业]