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Core-shell structure carbon nanotube reinforced carbon/carbon composite material and preparation method thereof
The invention relates to a core-shell structure carbon nanotube reinforced carbon/carbon composite material and a preparation method thereof, wherein the core-shell structure carbon nanotube reinforced carbon/carbon composite material comprises a CNT reinforced C/C composite material shell layer and a CNT-free pure C/C composite material core layer, the thickness ratio of the shell layer to the core layer meets a certain value, and the core-shell structure is prepared by a two-step process of combining catalytic chemical vapor deposition (hereinafter referred to as CCVD) with isothermal chemical vapor deposition (hereinafter referred to as ICVD). Compared with a pure C/C composite material, the bending strength and the bending modulus of the prepared core-shell multi-scale C/C composite material can be improved by 50% and 13% or above respectively.
本发明涉及一种核壳结构碳纳米管增强碳/碳复合材料及制备方法，由CNT增强C/C复合材料“外壳”层和不含CNT的纯C/C复合材料“核心”层组成，壳层与核层厚度之比满足一定数值。该“核壳”结构由催化化学气相沉积(以下简称CCVD)结合等温化学气相沉积(以下简称ICVD)两步工艺制备而来。本发明制备的“核壳”多尺度C/C复合材料相比于纯C/C复合材料，其弯曲强度和弯曲模量可分别提高50％和13％以上。
Core-shell structure carbon nanotube reinforced carbon/carbon composite material and preparation method thereof
The invention relates to a core-shell structure carbon nanotube reinforced carbon/carbon composite material and a preparation method thereof, wherein the core-shell structure carbon nanotube reinforced carbon/carbon composite material comprises a CNT reinforced C/C composite material shell layer and a CNT-free pure C/C composite material core layer, the thickness ratio of the shell layer to the core layer meets a certain value, and the core-shell structure is prepared by a two-step process of combining catalytic chemical vapor deposition (hereinafter referred to as CCVD) with isothermal chemical vapor deposition (hereinafter referred to as ICVD). Compared with a pure C/C composite material, the bending strength and the bending modulus of the prepared core-shell multi-scale C/C composite material can be improved by 50% and 13% or above respectively.
本发明涉及一种核壳结构碳纳米管增强碳/碳复合材料及制备方法，由CNT增强C/C复合材料“外壳”层和不含CNT的纯C/C复合材料“核心”层组成，壳层与核层厚度之比满足一定数值。该“核壳”结构由催化化学气相沉积(以下简称CCVD)结合等温化学气相沉积(以下简称ICVD)两步工艺制备而来。本发明制备的“核壳”多尺度C/C复合材料相比于纯C/C复合材料，其弯曲强度和弯曲模量可分别提高50％和13％以上。
Core-shell structure carbon nanotube reinforced carbon/carbon composite material and preparation method thereof
一种核壳结构碳纳米管增强碳/碳复合材料及制备方法
LI WEI (author) / SONG QIANG (author) / QIANG QI (author) / ZHANG CHENG (author) / LI HEJUN (author) / FU QIANGANG (author)
2021-10-08
Patent
Electronic Resource
Chinese
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