PE/PVC共混物与PE界面黏结性能研究

为改善聚氯乙烯(PVC)和聚乙烯(PE)界面黏结性能,制备了一系列PE/PVC共混物及其与PE的黏结材料,探究了原料比例和成型温度对(PE/PVC)/PE界面黏结性能的影响。结果表明,PE/PVC共混物为不相容体系。共混物中随着PE含量升高,体系拉伸强度增大,断裂伸长率升高。(PE/PVC)/PE材料中,随着PE/PVC共混物中PVC含量升高,PE/PVC与PE的界面黏结强度先升高后降低。成型温度升高,界面黏结性能提高。在PE/PVC比例为60/40、黏结温度为100℃时,PE/PVC共混物与PE的界面黏结强度最大,可与共混物拉伸强度接近。

The Investigation of Interfacial Adhesion between PE/PVC and PE

In order to improve the viscosity of the interface of polyvinyl chloride( PVC) and polyethylene( PE),a series of blends of PE and PVC, as well as the adhesions between the PE/PVC blends and PE(( PE/PVC)/PE) were prepared in this investigation,and the effects of the weight ratios of PE/PVC and temperature on interfacial adhesion were investigated. The results indicate that the PE and PVC in the binary blends are incompatible. With the increase of PE contents,the tensile strength of the blends increases,and elongation at break is improved. In the preparation process of( PE/PVC)/PE adhesions,when PVC contents increases in the blends,the strength of interfacial adhesions increases at first,and then decreases,and the adhesion presents better performance as the temperature rises. When the mass ratio of PE/PVC is 60/40 and the molding temperature is 100 ℃,the adhesion strength between PE/PVC and PE could reach the maximum,which is close to the tensile strength of the blend.