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A platform for research: civil engineering, architecture and urbanism
Preparation method of high-performance ultra-large and ultra-thick carbon/carbon composite material
The invention provides a preparation method of a high-performance ultra-large and ultra-thick carbon/carbon composite material. The preparation method comprises the following steps: A, preparing a carbon fiber preform; B, performing primary graphitization treatment on the carbon fiber preform to obtain a carbon fiber blank; C, carrying out CVD densification treatment on the carbon fiber green body to obtain a CVD green body; D, carrying out secondary graphitization treatment on the CVD green body to obtain a graphitized green body; E, sequentially carrying out dipping curing treatment, carbonization treatment, high-temperature heat treatment and machining treatment on the graphitized green body; F, repeating the step E until the density of the graphitized green body reaches a target value to obtain a primary finished product; and G, performing finish machining on the primary finished product, and obtaining a finished product. The product prepared by the method is high in percent of pass and excellent in performance, and batch preparation of the high-performance ultra-large and ultra-thick carbon/carbon composite material can be realized.
本申请提供一种高性能超大超厚碳/碳复合材料的制备方法，包括以下步骤：a.准备碳纤维预制体；b.对碳纤维预制体进行初次石墨化处理，得到碳纤维坯体；c.对碳纤维坯体进行CVD致密化处理，得到CVD坯体；d.对CVD坯体进行二次石墨化处理，得到石墨化坯体；e.对石墨化坯体依次进行浸渍固化处理，炭化处理，高温热处理，机械加工处理；f.重复所述步骤e，直至石墨化坯体的密度达到目标值，得到初成品；g.对初成品进行精加工，得到成品。该方法制备的产品合格率高且性能优异，能够实现高性能超大超厚碳/碳复合材料的批量制备。
Preparation method of high-performance ultra-large and ultra-thick carbon/carbon composite material
The invention provides a preparation method of a high-performance ultra-large and ultra-thick carbon/carbon composite material. The preparation method comprises the following steps: A, preparing a carbon fiber preform; B, performing primary graphitization treatment on the carbon fiber preform to obtain a carbon fiber blank; C, carrying out CVD densification treatment on the carbon fiber green body to obtain a CVD green body; D, carrying out secondary graphitization treatment on the CVD green body to obtain a graphitized green body; E, sequentially carrying out dipping curing treatment, carbonization treatment, high-temperature heat treatment and machining treatment on the graphitized green body; F, repeating the step E until the density of the graphitized green body reaches a target value to obtain a primary finished product; and G, performing finish machining on the primary finished product, and obtaining a finished product. The product prepared by the method is high in percent of pass and excellent in performance, and batch preparation of the high-performance ultra-large and ultra-thick carbon/carbon composite material can be realized.
本申请提供一种高性能超大超厚碳/碳复合材料的制备方法，包括以下步骤：a.准备碳纤维预制体；b.对碳纤维预制体进行初次石墨化处理，得到碳纤维坯体；c.对碳纤维坯体进行CVD致密化处理，得到CVD坯体；d.对CVD坯体进行二次石墨化处理，得到石墨化坯体；e.对石墨化坯体依次进行浸渍固化处理，炭化处理，高温热处理，机械加工处理；f.重复所述步骤e，直至石墨化坯体的密度达到目标值，得到初成品；g.对初成品进行精加工，得到成品。该方法制备的产品合格率高且性能优异，能够实现高性能超大超厚碳/碳复合材料的批量制备。
Preparation method of high-performance ultra-large and ultra-thick carbon/carbon composite material
一种高性能超大超厚碳/碳复合材料的制备方法
XIONG XIANG (author) / ZHANG HONGBO (author) / ZUO JINGLYU (author) / XIONG JIE (author) / XU HUIJUAN (author) / WANG YALEI (author) / YANG BO (author) / JIANG BINGWU (author)
2021-06-25
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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