Structural Analysis and Thermal Stability of Isotropic Pitch with High Softening Point
Isotropic pitch with high softening point(HTIP)has a wide range of applications in graphite electrode modification and preparation of hard carbon materials.In this paper,the improved Brown-Lander method was used to analyze the average structural parameters of toluene soluble of HTIP,and the average molecular structure model conforming to the structural parameters was constructed.HTIP-TS is mainly composed of condensed aromatic rings,with short side chains around the aromatic rings and biphenyl structure inside the molecule.The infrared spectrum of HTIP was obtained by FT-IR analysis,and its aromaticity index and branching index were calculated by peak fitting.The microcrystalline structure parameters of HTIP were calculated by peak fitting of XRD analysis result.The thermal stability of HTIP was analyzed by TG technique,and the microstructure was related to its thermal stability.
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