铝酸酯增容改性竹粉对PBAT/BF复合材料性能的影响  

Compatibilization Modification of Bamboo Powders with Aluminic Acid Ester and Its Effect on Properties of PBAT Matrix Composites

作　　者：谢熙威 翁云宣[1,2] 张彩丽 宋鑫宇 XIE Xiwei;WENG Yunxuan;ZHANG Caili;SONG Xinyu(Department of Material Science and Engineering,Beijing Technology and Business University,Beijing 100048,China;Beijing Key Laboratory of Plastic Hygiene and Safety Quality Assessment Technology,Beijing 100048,China)

机构地区：[1]北京工商大学材料与机械工程学院,北京100048 [2]塑料卫生与安全质量评价技术北京市重点实验室,北京100048

出　　处：《中国塑料》2020年第4期78-83,共6页China Plastics

基　　金：国家自然基金项目(51773005)。

摘　　要：利用异相捏合双螺杆挤出机,将铝酸酯处理前后的竹粉(BF)分别与聚对苯二甲酸-己二酸丁二醇酯(PBAT)共混,制得PBAT/BF复合材料。采用万能试验机、热重分析仪、扫描电子显微镜对PBAT/BF复合材料进行力学、热学性能和微观结构的表征。结果表明,BF表面经铝酸酯处理后,PBAT/BF复合材料的热稳定性和力学性能均得到改善,当铝酸酯添加量为1%(质量分数,下同)时,PBAT/BF复合材料的冲击强度由6.7 MPa增加到9.5 MPa,提高了42%,且断裂伸长率提高了92.7%。The bamboo powders(BP)were surface modified with aluminic acid ester and then melt blended with poly(terephthalic acid succinate)(PBAT)to prepare a series of PBAT/BP composites through a heterogeneous kneading twin-screw extruder.The mechanical,thermal properties and microstructure of PBAT/BP composites were characterized by a universal testing machine,thermogravimetric analysis and scanning electron microscopy.The results indicated that the thermal stability and mechanical properties of PBAT/BP composites were improved due to the surface modification of BF with aluminic acid ester.When 1 wt%of aluminic acid ester was incorporated,the PBAT/BF composites achieved an increase in impact strength by 42%,and in elongation at break by 92.7%.

关 键 词：竹塑复合材料 铝酸酯 冲击强度 热稳定性 相容性 

分 类 号：TQ320.[化学工程—合成树脂塑料工业]