PBAT/磷石膏复合薄膜的制备与性能  

Preparation and Properties of PBAT/PG Composite Films

作　　者：刘振涛 严伟[1,2] 王奎 黄伟江 刘玉飞[2,3] 何敏[3] 于杰[2] Liu Zhentao;Yan Wei;Wang Kui;Huang Weijiang;Liu Yufei;He Min;Yu Jie(College of Chemistry and Materials Engineering,Guiyang University,Guiyang 550005,China;National Engineering Research Center for Composite Modified Polymer Materials,Guiyang 550014,China;Institute of Materials and Metallurgy of Guizhou University,Guiyang 550025,China)

机构地区：[1]贵阳学院化学与材料工程学院,贵阳550005 [2]国家复合改性聚合物材料工程技术研究中心,贵阳550014 [3]贵州大学材料与冶金学院,贵阳550025

出　　处：《工程塑料应用》2021年第1期25-29,共5页Engineering Plastics Application

基　　金：国家自然科学基金项目(52063005),贵州省教育厅创新群体项目(黔教合KY字[2020]024),贵州省“千”层次创新型人才项目(黔人领发[2020]04)。

摘　　要：采用熔融挤出流延法制备聚己二酸/对苯二甲酸丁二酯(PBAT)/磷石膏(PG)复合薄膜,利用热重分析仪、X射线衍射仪及扫描电子显微镜(SEM)等对PBAT/PG复合薄膜的性能与微观形貌进行表征。结果表明,PG微粉的加入量为40%时,PBAT/PG复合薄膜的拉伸强度高达19.4 MPa,与纯PBAT薄膜的拉伸强度相比提高了42%。同时,PG的加入使PBAT/PG复合薄膜的结晶程度有所提高且有新的α晶面产生。对复合薄膜断面进行SEM观察得出,PG加入量为40%时,PG与PBAT混合较为均匀,分散较好,这与拉伸强度结果相一致,对体系力学性能有一定的改善。热重分析表明,随着PG含量的增加,复合薄膜的残炭率逐渐升高。Polyadipate/butylene terephthalate(PBAT)/phosphogypsum(PG)composite film was prepared by melt extrusion casting method.The properties and micro morphology of PBAT/PG composite films were investigated using thermal weight loss analyzer(TG),X-ray diffractometer(XRD)and scanning electron microscopy(SEM),etc.The results show that when the adding amount of PG powder is 40%,the tensile strength of PBAT/PG composite films is 19.4 MPa,which is 42%higher than that of the pure PBAT film.Furthermore,the addition of PG increases the degree of crystallinity of PBAT/PG composite films and produces newαcrystal planes.The SEM observation of the cross-section of the composite films shows that when the amount of PG is 40%,PG and PBAT are more uniformly mixed and dispersed.This is consistent with the tensile strength results,which improves the mechanical properties of the system to a certain extent.The weight loss analysis shows that the carbon residue rate of the composite films gradually increases with the increase of PG content.

关 键 词：聚己二酸/对苯二甲酸丁二酯 磷石膏 力学性能 微观结构 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]