Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing ultra-long and ultra-thick plate-shaped carbon/carbon composite material in large scale at low cost
The invention discloses a method for preparing an ultra-long and ultra-thick plate-shaped carbon/carbon composite material on a large scale at low cost, which comprises the following steps: carrying out primary graphitization treatment on a carbon fiber preform to obtain a carbon fiber blank, loading the carbon fiber blank into a chemical vapor deposition furnace to carry out chemical vapor deposition treatment, and then carrying out secondary graphitization treatment to obtain the ultra-long and ultra-thick plate-shaped carbon/carbon composite material. A carbon/carbon green body is obtained, and the carbon/carbon green body is subjected to resin carbon densification treatment; according to the chemical vapor deposition, in the CVI deposition process, the flowing direction of gas in the deposition process is effectively controlled through the arrangement of an original chemical vapor deposition device, the freshness of carbon source gas in a deposition chamber is made to be consistent, an independent gas channel area is formed around each product, gas makes full contact with all parts of a blank, densification is uniform, the microstructure of the product is controllable, and the product quality is improved. After the product is subjected to high-temperature heat treatment at 2000-2500 DEG C, the graphitization degree range is 40-70%.
本发明公开了一种大批量低成本制备超长超厚板状碳/碳复合材料的方法，将碳纤维预制体进行初次石墨化处理获得碳纤维坯体，将碳纤维坯体装料于化学气相沉积炉中进行化学气相沉积处理，然后再进行第二次石墨化处理，获得碳/碳坯体，将碳/碳坯体进行树脂碳增密处理；所述化学气相沉积在CVI沉积过程中通过独创化学气相沉积装置的设置，有效控制沉积过程中气体的流动方向，使沉积室内碳源气体新鲜度一致，每件产品周围形成独立气体通道区域，气体与坯体各部位充分接触，增密均匀，产品微观结构可控，产品经过2000～2500℃的高温热处理后，石墨化度范围为40～70％。
Method for preparing ultra-long and ultra-thick plate-shaped carbon/carbon composite material in large scale at low cost
The invention discloses a method for preparing an ultra-long and ultra-thick plate-shaped carbon/carbon composite material on a large scale at low cost, which comprises the following steps: carrying out primary graphitization treatment on a carbon fiber preform to obtain a carbon fiber blank, loading the carbon fiber blank into a chemical vapor deposition furnace to carry out chemical vapor deposition treatment, and then carrying out secondary graphitization treatment to obtain the ultra-long and ultra-thick plate-shaped carbon/carbon composite material. A carbon/carbon green body is obtained, and the carbon/carbon green body is subjected to resin carbon densification treatment; according to the chemical vapor deposition, in the CVI deposition process, the flowing direction of gas in the deposition process is effectively controlled through the arrangement of an original chemical vapor deposition device, the freshness of carbon source gas in a deposition chamber is made to be consistent, an independent gas channel area is formed around each product, gas makes full contact with all parts of a blank, densification is uniform, the microstructure of the product is controllable, and the product quality is improved. After the product is subjected to high-temperature heat treatment at 2000-2500 DEG C, the graphitization degree range is 40-70%.
本发明公开了一种大批量低成本制备超长超厚板状碳/碳复合材料的方法，将碳纤维预制体进行初次石墨化处理获得碳纤维坯体，将碳纤维坯体装料于化学气相沉积炉中进行化学气相沉积处理，然后再进行第二次石墨化处理，获得碳/碳坯体，将碳/碳坯体进行树脂碳增密处理；所述化学气相沉积在CVI沉积过程中通过独创化学气相沉积装置的设置，有效控制沉积过程中气体的流动方向，使沉积室内碳源气体新鲜度一致，每件产品周围形成独立气体通道区域，气体与坯体各部位充分接触，增密均匀，产品微观结构可控，产品经过2000～2500℃的高温热处理后，石墨化度范围为40～70％。
Method for preparing ultra-long and ultra-thick plate-shaped carbon/carbon composite material in large scale at low cost
一种大批量低成本制备超长超厚板状碳/碳复合材料的方法
ZUO JINLYU (Autor:in) / YANG BO (Autor:in) / JIANG BINGWU (Autor:in) / TANG WENJIN (Autor:in)
14.01.2025
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Preparation method of low-cost ultra-large and ultra-thick carbon/carbon composite material
| Europäisches Patentamt | 2021
Preparation method of high-performance ultra-large and ultra-thick carbon/carbon composite material
| Europäisches Patentamt | 2021
Ultra-large-size carbon/carbon composite material sheet and equipment for preparing the same
| Europäisches Patentamt | 2020
| Europäisches Patentamt | 2023