复合增塑体系对聚乙烯醇加工性能的影响  

Effect of composite plasticizing system on the processability of PVA

作　　者：唐龙祥[1] 张瑜[1] 刘春华[1] 王平华[1] 

机构地区：[1]合肥工业大学化工学院,安徽合肥230009

出　　处：《合成树脂及塑料》2010年第4期38-40,共3页China Synthetic Resin and Plastics

摘　　要：为实现聚乙烯醇(PVA)的熔融加工成型,将不同聚合度的2种PVA共混,并分别加入甘油/增塑剂1或甘油/增塑剂2复合增塑剂。X射线衍射仪、差示扫描量热仪及热失重分析仪等测试结果表明,复合增塑体系的加入使PVA的结晶度降低,熔点从225℃降低到206℃,热分解温度基本不变,PVA热塑性加工有望得到实现。The authors blended two kinds of polyvinyl aleohol（PVA） with different degree of polymerization and added glycerin/plasticizer 1 or glycerin/plasticizer 2 composite plasticizing systems to the resultant PVA blend, respectively, aiming at being able to perform melt processing of PVA. The results of X-ray diffraction（XRD）, differential scanning calorimetry（DSC） and thermogravimetric（TG） analysis show that the addition of the composite plasticizers decreases the crystallinity and lowers the melting point of the PVA blend from 225 ℃ to 206 ℃, without bringing about any obvious impact on the thermal decomposition temperature. As a consequence, the thermoplastic processing of PVA can be feasibly carried out.

关 键 词：聚乙烯醇 复合增塑剂 熔点 热分解温度 

分 类 号：TQ325.9[化学工程—合成树脂塑料工业]