聚氨酯弹性体/纳米二氧化硅改性聚氯乙烯材料的研制  

Preparation of PVC material modified by polyurethane elastomer/nano-SiO_2

作　　者：王士财[1] 张晓东[1] 楼涛[1] 佘希林[1] 李志国[1] 

机构地区：[1]青岛大学化学化工与环境学院,山东青岛266071

出　　处：《弹性体》2009年第5期37-40,64,共5页China Elastomerics

摘　　要：在考察了聚氨酯弹性体/纳米二氧化硅/聚氯乙烯(PU/nano-SiO2/PVC)反应挤出工艺的基础上,采用反应挤出一步法制备了PU弹性体/nano-SiO2改性的PVC材料,并对其力学性能进行了实验研究。结果表明,PU/nano-SiO2的质量比为5∶1时,增韧改性效果最佳,PU弹性体和nano-SiO2能协同增韧PVC,且nano-SiO2具有补强作用,当PU/nano-SiO2/PVC质量比为5∶1∶20时,改性材料的综合性能最优,此时样品材料的冲击强度达到45.6kJ/m2,拉伸强度为50.3MPa。Polyvinyl chloride（PVC） material modified by polyurethane（PU） elastomer/nanometer silicon dioxide （nano-SiO2） was prepared by one-step reactive extrusion technology（OSRET）, on the basis of studying on technological procedure of OSRET PU/nano-SiO2/PVC blending. The properties of PVC modified by PU/nano-SiO2 had been experimentally studied. The optimum toughening effectiveness was acquired when the mass ratio of PU elastomer to nano-SiO2 equaled to 5：1. There existed a synergism in toughening between nano-SiO2 and PU elastomer, and nano-SiO2 played a function Of reinforcer. When the mass ratio of PU elastomer to nano-SiO2 to PVC was 5：1：20, the modified material has excelllent comprehensive properties with the impact strength of 45.6 kJ/m^2 and tensile strength of 50. 3 MPa.

关 键 词：聚氨酯弹性体 纳米二氧化硅 聚氯乙烯 改性 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]