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Chemical vapor infiltration method for preparing pyrolytic carbon with external biomass catalyst
The invention relates to a chemical vapor infiltration method for preparing pyrolytic carbon with an external biomass catalyst. The biomass catalyst is introduced outside a carbon fiber preform, decomposition and reutilization of deposited gas are catalyzed, the decomposition, polymerization and addition polymerization process of the deposited gas is accelerated, the concentration of a gas decomposition product in unit time is improved, and the initial deposition efficiency of pyrolytic carbon is improved by about 4 times compared with that without catalysis. The one-dimensional carbon material is generated in the external catalyst, so that the smoothness of a pyrolytic carbon deposition channel is ensured. The gas components in the deposition space are changed, and the graphitization degree of the matrix carbon of the catalytic C/C composite material is increased by about 40%. The preparation method is simple to operate, the catalyst is low in cost and expected to be recycled, and good social benefits and economic benefits are achieved.
本发明涉及一种外置生物质催化剂的热解碳制备用化学气相渗透方法，在碳纤维预制体外部引入生物质催化剂，催化沉积气体分解再利用，沉积气体分解、聚合、加聚过程加快，单位时间气体分解产物浓度提高，热解碳初始沉积效率较无催化时提高近4倍。且一维碳材料在外部催化剂中生成，确保热解碳沉积通道的通畅。沉积空间气体组分发生变化，催化C/C复合材料的基体碳石墨化度提高近40％。本发明制备方法操作简单，催化剂成本低廉、有望回收利用，具有很好的社会效益与经济效益。
Chemical vapor infiltration method for preparing pyrolytic carbon with external biomass catalyst
The invention relates to a chemical vapor infiltration method for preparing pyrolytic carbon with an external biomass catalyst. The biomass catalyst is introduced outside a carbon fiber preform, decomposition and reutilization of deposited gas are catalyzed, the decomposition, polymerization and addition polymerization process of the deposited gas is accelerated, the concentration of a gas decomposition product in unit time is improved, and the initial deposition efficiency of pyrolytic carbon is improved by about 4 times compared with that without catalysis. The one-dimensional carbon material is generated in the external catalyst, so that the smoothness of a pyrolytic carbon deposition channel is ensured. The gas components in the deposition space are changed, and the graphitization degree of the matrix carbon of the catalytic C/C composite material is increased by about 40%. The preparation method is simple to operate, the catalyst is low in cost and expected to be recycled, and good social benefits and economic benefits are achieved.
本发明涉及一种外置生物质催化剂的热解碳制备用化学气相渗透方法，在碳纤维预制体外部引入生物质催化剂，催化沉积气体分解再利用，沉积气体分解、聚合、加聚过程加快，单位时间气体分解产物浓度提高，热解碳初始沉积效率较无催化时提高近4倍。且一维碳材料在外部催化剂中生成，确保热解碳沉积通道的通畅。沉积空间气体组分发生变化，催化C/C复合材料的基体碳石墨化度提高近40％。本发明制备方法操作简单，催化剂成本低廉、有望回收利用，具有很好的社会效益与经济效益。
Chemical vapor infiltration method for preparing pyrolytic carbon with external biomass catalyst
一种外置生物质催化剂的热解碳制备用化学气相渗透方法
SHI XIAOHONG (author) / HAN LULU (author) / HAN XU (author) / TIAN XINFA (author) / YANG LI (author) / MU JIERUI (author) / JIAO FAN (author) / WANG GUOQING (author)
2021-06-08
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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