摘要
用溶液共混的方法,向PVA中加入各种增塑剂及其复配体系,利用TGA、DSC、XRD等手段,研究了改性剂对PVA热性能及结晶的影响,利用熔体流动速率测定仪对加工性能进行了初步表征,同时分析了增塑剂加入对材料强度和断裂伸长率的影响。试验结果表明,改性体系的加入,降低了PVA的熔点和结晶度,分解温度有所提高;在满足材料强度的前提下,柔性得到很大改善,同时实现了PVA的熔融挤出。
Different plasticizers were added to PVA, in order to improve its themoplasticity. TGA, DSC, XRD were used to test the performances of modified PVA. At the same time, mechanical properties and melt flow index of modified PVA also were tested. The results show that the melting point and crystallinity of plasticized PVA depresses, thermal decomposing temperature increases, and flexibitity is improved. When the content of plasticizers is 30 phr （Glycerin/PEG= 1：1）, the effect is best. Then the thermoplastic processing of PVA is realized.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2008年第5期84-87,共4页
Polymer Materials Science & Engineering
关键词
聚乙烯醇
结晶度
熔融指数
增塑剂
polyvinyl alcohol
crystallinity
melt flow index
plasticizer
