【摘要】 以Tween 80为分散剂,分别以丙烯酰胺和N,N′-亚甲基双丙烯酰胺为单体和交联剂,采用凝胶注模工艺制备中间相碳微球(mesocarbon microbead,MCMB)片状素坯,再经过1 600℃的烧结,制备MCMB素坯烧结体试样.试验研究了粒度大小对粉体分散性、MCMB碳材料催化石墨化效果、烧结后MCMB碳材料层板物理性能的影响,并分析了产生这些影响的原因.研究结果表明:50 nm的TiC在MCMB烧结体中的分散效果好于15μm的TiC;随着Ti质量分数的增加,掺杂50 nm的TiC层板性能优于掺杂15μm的层板;50 nm的TiC比15μm的TiC更适合做MCMB的掺杂物.更多还原

【Abstract】 The green discs of mesocarbon microbeads(MCMB) were prepared by adopting gelcasting and using Tween 80 as dispersant,acrylamide and bisacrylamide as monomer and crosslinking.Then the green discs were sintered at 1 600 ℃.The effect of different granularities on the powder dispersing,the catalytic graphitization degree,and physical performance of sintered MCMB laminations were studied.The causes of these effects were analyzed.It is showed that the dispersing effect and physical performances of 50 nm TiC lamination are better than 15 μm TiC,which proves that 50 nm TiC is a better adulterant for MCMB.更多还原