Preparation of tea polyphenol modified graphene enhanced polymer composite material and research on its performance
REN Xiang-yu1, CHEN Hui1, LIN Xiang-bao1, WU Zhi-gang2, LIU Hong-bo1
1. College of Materials Science and Engineering, Hunan University, Changsha 410082, China; 2. Hunan Changyu Science and Technology Development Co., Ltd., Changsha 410600, China
Abstract: Tea polyphenol (TP) extracted from pure natural green tea is used to carry out surface grafting of graphene oxide (GO),therefore TP-modified graphene (TPG) is prepared.TPG/polymer composite materials are prepared by mechanical blending and thermo-curing molding.The structure and performance of TPG are characterized by X-ray diffraction (XRD),infrared spectroscopy (FT-IR),thermal reanalysis (TGA) and X-ray photoelectron spectroscopy (XPS).The mechanical properties of TPG/polymer composites are tested by using a universal material tester.The stretching section profile of the composites is observed by means of field-launched scanning mirrors (SEM),and the thermal stability of the composites is studied via thermal weight and thermal expander.Results show that TP molecules are successfully connected to the oxygen-containing functional groups on the surface of GO through phenolic hydroxyl.Thermal decomposition temperature of TPG/epoxy composites increases by 22.2℃ when the adding amount of TPG is 1.0 wt%.The tensile strength of epoxy composites increases by 13.5% to 59.85 MPa when the adding amount of TPG is 0.5 wt%.Glass conversion temperature of carboxyl nitrile rubber (XNBR) increases from -20.8℃ to -16.5℃ when the adding amount of TPG is 1.0 wt%.The tensile strength of XNBR composites increases by 57.4% from 8.10 MPa to 12.75 MPa when the adding amount of TPG is 2.0 wt%.
任翔宇, 陈惠, 林祥宝, 吴志刚, 刘洪波. 茶多酚改性石墨烯增强高分子复合材料的制备与性能研究[J]. 现代化工, 2020, 40(6): 138-144.
REN Xiang-yu, CHEN Hui, LIN Xiang-bao, WU Zhi-gang, LIU Hong-bo. Preparation of tea polyphenol modified graphene enhanced polymer composite material and research on its performance. Modern Chemical Industry, 2020, 40(6): 138-144.
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