新型炭材料2021，Vol.36Issue(5)：961-970,10.DOI:10.1016/S1872-5805(21)60067-7
TiC改性碳纳米管增强中间相炭微球制备各向同性石墨
TiC-modified CNTs as reinforcing fillers for isotropic graphite produced from mesocarbon microbeads
摘要
Abstract
Multi-wallcarbon nanotubes (CNTs) were modified by nano-TiC using a pressureless spark plasma sintering techno-logy. The TiC-modified CNTs (T-CNTs) were added to mesocarbon microbeads (MCMBs) to prepare high performance isostatically pressed graphite materials. The structures of the T-CNTs and the prepared isotropic graphite materials were characterized by XRD, SEM and TEM. The mechanical and thermal properties of isotropic graphite reinforced by T-CNTs were measured by a micro-con-trolled electronic universal testing machine, laser thermal conductivity meter and thermal expansion coefficient meter. Results showed that the nano-TiC was successfully grown on the surface of CNTs. Compared with the isotropic graphite prepared from MCMBs without T-CNTs, the isotropic graphite with T-CNTs has a significant improvement in physical properties (density, open porosity and volume shrinkage). Its flexural strength and degree of graphitization increased by 70％and 10％, respectively, and the thermal properties were also improved to some degree.关键词
放电等离子烧结/TiC改性多壁碳纳米管/中间相炭微球/各向同性石墨Key words
Spark plasma sintering/TiC modified carbon nanotubes/Mesocarbon microbead/Isotropic graphite分类
通用工业技术引用本文复制引用
林祥宝,陈惠,巫静,吴志刚,李润,刘洪波..TiC改性碳纳米管增强中间相炭微球制备各向同性石墨[J].新型炭材料,2021,36(5):961-970,10.基金项目
国家科技部"十三五"国家重点研发计划重点专项"(2017YF0310905) （2017YF0310905）
国家自然科学基金(51402101) （51402101）
湖南省科技重大专项项目(2018GK4012,2018GK1030).The authors gratefully acknowledge the financial support for this work provided by National key re-search and development plan(2017YF0310905),the Natural Science Foundation of China(51402101)and Hunan Provincial key research and development plan(2018GK4012,2018GK1030). （2018GK4012,2018GK1030）
