环氧大豆油反应增容对PLA/TPU共混物性能的影响  

Effect of Using Epoxidized Soybean Oil as a Reactive Compatibilizer on the Properties of PLA/TPU/DOPO Composite

作　　者：江德志 范家鑫 闫成宇 黄吟秋 唐龙祥 JIANG Dezhi;FAN Jiaxin;YAN Chengyu;HUANG Yinqiu;TANG Longxiang(School of Chemistry and Chemical Engineering,Hefei University of Technology,Hefei,Anhui 230009,China)

机构地区：[1]合肥工业大学,化学与化工学院,安徽合肥230009

出　　处：《塑料》2024年第1期7-12,共6页Plastics

摘　　要：以热塑性聚氨酯(TPU)为增韧剂、环氧大豆油(ESO)为反应型相容剂,采用熔融共混制备了PLA/TPU/ESO复合材料,研究了ESO的含量对复合材料性能的影响。利用傅里叶红外光谱分析(FTIR)、力学性能测试、差示扫描量热仪(DSC)、热重分析(TGA)、动态力学性能分析(DMTA)、扫描电子显微镜(SEM)进行测试,结果表明,加入ESO后,PLA/TPU共混物的力学性能显著提升,其中,84PLA/10TPU/6ESO复合材料的综合性能最佳,与纯PLA相比,其断裂伸长率和冲击强度分别提升了32倍和8倍,拉伸强度下降了20%,但是,韧性较高,这是由于,ESO与PLA/TPU发生反应,形成PLA-g-TPU共聚物,充当PLA和TPU界面之间的桥梁,提高了PLA与TPU的相容性。With thermoplastic polyurethane(TPU)as tougher and epoxy soybean oil(ESO)as reactive compatible agent,PLA/TPU/ESO composite was prepared by melting and mixing and the influence of ESO content on the properties of composite was studied.The results of fourier transform infrared(FTIR),mechanical properties,differential scanning calorimetry(DSC),thermogravimetric analysis(TGA),dynamic mechanical properties analysis(DMTA),scanning electron microscopy(SEM)showed that ESO significantly improved the mechanical properties of PLA/TPU,in which the 84PLA/10TPU/6ESO mass had the best comprehensive performance,the elongation and impact strength of the fracture increased by 32 times and 8 times compared with the pure PLA,respectively,while the tensile strength only decreased by 20%.This high toughness could be attributed to the reaction of ESO with PLA and TPU molecular chains,forming the PLAg-TPU copolymer chain acting as a bridge between PLA and TPU interface to improve the compatibility of PLA and TPU.

关 键 词：聚乳酸 热塑性聚氨酯 环氧大豆油 增韧改性 反应性增容 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业] TQ323.8