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.
作者
刘振涛
严伟
王奎
黄伟江
刘玉飞
何敏
于杰
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)
出处
《工程塑料应用》
CAS
CSCD
北大核心
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)。