Abstract: γ-aminopropyltriethoxysilane (APTS) as coupling agent, hexachlorocyclotriphosphonitrile (HCTP) and hexylenediamine (HMD) as branched chains, amino-terminal hyperbranched phosphonitrile (GO-HPC) was introduced on the grapheneoxide (GO) sheets surface by continuous grafting method. Through FTIR, XPS, XRD, Raman, SEM and TEM, it is confirmed that the amino-terminal hyperbranched phosphonitrile has been successfully grafted onto the GO sheets surface. Epoxy composites containing GO and GO-HPC with 0.1% (mass fraction) loadings were prepared and the dispersion and mechanical properties were systemically investigated. It is indicated that the hyperbranched phosphonitrile derivatives increased the spacing between GO layers, and improved the dispersion of GO in composites; its hyperbranched structure and terminal amino groups improved the mechanical interlocking and chemical bonding between GO and the resin matrix, and improved the interface bonding of composites, with the tensile strength, elastic modulus, flexural strength and modulus of GO-HPC/epoxy composite increasing by 65.37%, 41.92%, 49.60% and 26.40%, respectively.
张文健, 郑浩, 李博文, 宋国君, 马丽春. 超支化磷腈衍生物修饰GO及其环氧复合材料的力学性能研究[J]. 材料导报, 2022, 36(8): 20110164-4.
ZHANG Wenjian, ZHENG Hao, LI Bowen, SONG Guojun, MA Lichun. GO Modified by Hyperbranched Phosphonitrile Derivatives and the Mechanical Properties of Its Epoxy Composite. Materials Reports, 2022, 36(8): 20110164-4.
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2022, Vol. 36 
