离聚物与PE-g-MAH对HDPE/PA6体系的增容改性研究  

Study on Compatibilization Modification of HDPE/PA6 System by Ionomer and PE-g-MAH

作　　者：甄向时 张莉彦[1] 石美浓[1] 杨利平 焦志伟[1] 杨卫民[1] Zhen Xiangshi;Zhang Liyan;Shi Meinong;Yang Liping;Jiao Zhiwei;Yang Weimin(College of Mechanical and Electrical Engineering,Beijing University of Chemical Technology,Beijing 100029,China;Guangdong Gulf New Materials Institute,Shenzhen 518172,China)

机构地区：[1]北京化工大学机电工程学院,北京100029 [2]广东海湾新材料研究院,广东深圳518172

出　　处：《塑料科技》2019年第12期18-23,共6页Plastics Science and Technology

基　　金：国家自然科学基金(2016YFB0302000);广东省科技计划项目(2016B090915001)

摘　　要：以离聚物沙林树脂(Surlyn 9910)和马来酸酐接枝聚乙烯(PE-g-MAH)作为高密度聚乙烯(HDPE)/尼龙6(PA6)体系的增容剂,通过双螺杆挤出机进行熔融共混。探究了两种不同相容剂的增容效果和增容机理,结果表明:Surlyn 9910和PE-g-MAH均具有增容效果,Surlyn 9910的拉伸强度增强明显,当m(HDPE):m(PA6):m(Surlyn 9910)=80:20:2时,共混物拉伸强度提高至30 MPa。PE-g-MAH的增韧效果更好,当m(HDPE):m(PA6):m(PE-g-MAH)=80:20:2时,共混物断裂伸长率达到98%。通过差示扫描量热法(DSC)以及扫描电镜(SEM)分析了两种相容剂的增容机理,并从微观角度解释了力学性能的差异。相容性的改善提高了HDPE/PA6共混物的剪切黏度。Ionomer(Surlyn 9910)and maleic anhydride grafted polyethylene(PE-g-MAH)were used as compatibilizer for high density polyethylene(HDPE)/nylon 6(PA6)system,which were prepared through twin-screw extruder.The compatibilization effect and compatibilization mechanism of two different compatibilizers were investigated.The results show that Surlyn 9910 and PE-g-MAH both have compatibilizing effect,and the tensile strength of Surlyn 9910 is obviously enhanced.When m(HDPE):m(PA6):m(Surlyn 9910)=80:20:2,the tensile strength of the blend increases to 30 MPa.The toughening effect of PE-g-MAH is better when m(HDPE):m(PA6):m(PE-g-MAH)=80:20:2,the elongation at break of the blend reaches to 98%.The compatibilization mechanism of the two compatibilizers was analyzed by differential scanning calorimetry(DSC)and scanning electron microscopy(SEM)and the difference in mechanical properties was explained from the microscopic point of view.The improvement of compatibility improves the shear viscosity of HDPE/PA6 blends.

关 键 词：沙林树脂 增容改性 熔融共混 聚乙烯 尼龙6 

分 类 号：TB332[一般工业技术—材料科学与工程] TQ317[化学工程—高聚物工业]