PBAT/磷石膏复合薄膜的制备与性能
刘振涛1，严伟12，王奎1，黄伟江12，刘玉飞23，何敏3，于杰2
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
Preparation and Properties of PBAT/PG Composite Films
Liu Zhentao1, Yan Wei12, Wang Kui1, Huang Weijiang12, Liu Yufei23, He Min3, Yu Jie2
1. College of Chemistry and Materials Engineering, Guiyang University, Guiyang 550005, China; 2. National Engineering Research Center for Composite Modified Polymer Materials, Guiyang 550014, China; 3. Institute of Materials and Metallurgy of Guizhou University, Guiyang 550025, China
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。
Abstract：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 new αcrystal 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
Keywords：polyadipate/butylene terephthalate; phosphogypsum; mechanical property; microstructure
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)
本文引用格式：
刘振涛，严伟，王奎，等. PBAT/磷石膏复合薄膜的制备与性能[J].工程塑料应用，2021，49(1)：25-29.
Liu Zhentao，Yan Wei，Wang Kui，et al. Preparation and properties of PBAT/PG composite films[J]. Engineering Plastics Application，2021，49(1)：25-29.
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