改性聚乙烯醇的热性能  

Thermal Properties of Modified PVA

作　　者：王茹[1] 王琪[1] 李莉[1] 敖宁建[1] 华正坤[1] 

机构地区：[1]四川大学高分子研究所高分子材料工程国家重点实验室,成都610065

出　　处：《塑料工业》2002年第1期32-34,共3页China Plastics Industry

基　　金：国家重点基础研究专项经费资助项目 (G19990 6 480 9);华南理工大学聚合物新型成型装备国家工程研究中心资助课题 (项目编号NBRC98-0 0 2 )

摘　　要：采用DSC、TGA等测试 ,研究了 6种PVA改性体系中改性剂对PVA热性能的影响。初步表征了各体系的成膜性能。实验结果表明 ,改性剂与PVA分子间发生了强烈的相互作用 ,从而降低了PVA的熔点 ,提高了其热分解温度 ,在不同程度上改善了PVA的熔融性。s Changes of thermal properties,crystallinity of PVA with different modifiers were studied by means of DSC,TGA measurement etc.The results showed that with incorporation of the modifiers into PVA,the thermal behavior of PVA was improved,melting point of PVA depressd and its thermal decomposing temperature increased;the melting property of PVA improved.The modified PVA could be made into transparent films by thermal pressing method.The encouraging results obtained in this study provided theoretical and experimental basis for thermal blowing process of PVA film.

关 键 词：PVA 改性 热性能 测试 聚乙烯醇 

分 类 号：TQ325.9[化学工程—合成树脂塑料工业]