文章信息/Info

Title:

Design and Preparation of Carbon/Carbon Composites with High Thermal Conductivity

作者:

樊楨; 余立瓊; 李煒; 孔清; 王曉東; 馮志海

航天材料及工藝研究所 先進(jìn)功能復(fù)合材料技術(shù)重點(diǎn)實(shí)驗(yàn)室；華北電力大學(xué)

Author(s):

FAN Zhen;  YU Liqiong;  LI Wei;  KONG Qing;  WANG Xiaodong;  FENG Zhihai

Key Laboratory of Advanced Functional Composite Materials, Aerospace Research Institute of Materials and Processing Technology；North China Electric Power University, Beijing

關(guān)鍵詞:

高導(dǎo)熱; 碳/碳復(fù)合材料; 設(shè)計(jì); 制備; 表征

Keywords:

high thermal conductivity;  C/C composites;  design;  preparation;  characterization

DOI:

10.7502/j.issn.1674-3962.2017.05.07

文獻(xiàn)標(biāo)志碼:

A

摘要:

高導(dǎo)熱碳/碳復(fù)合材料具有輕質(zhì)、高導(dǎo)熱、高模量、低熱脹以及傳統(tǒng)碳/碳復(fù)合材料的高溫高強(qiáng)度等優(yōu)異性能，已成為當(dāng)前復(fù)合材料研究的熱點(diǎn)，在航天航空、電子科技、核工業(yè)等領(lǐng)域具有廣闊的應(yīng)用前景。本文依據(jù)構(gòu)建的典型結(jié)構(gòu)碳/碳復(fù)合材料熱導(dǎo)率模型，定量分析了重點(diǎn)結(jié)構(gòu)參數(shù)對(duì)碳/碳復(fù)合材料熱導(dǎo)率的影響，并據(jù)此開展了高導(dǎo)熱碳/碳復(fù)合材料結(jié)構(gòu)設(shè)計(jì)、調(diào)控、制備與表征研究，制備出室溫導(dǎo)熱方向熱導(dǎo)率分別達(dá)到700, 400和350 W/m·K以上單向、二維和三維高導(dǎo)熱碳/碳復(fù)合材料。

Abstract:

Because of its excellent properties, such as lightweight, high thermal conductivity, high specific modulus, low heat expansibility and all excellent properties of traditional C/C composites, the high thermal conductivity C/C composites (HTC-C/Cs) have become research focus in recent years and have broad application prospect in the fields of aerospace, electronics, nuclear industry and so on. In present study, effects of key structural parameters on the thermal conductivity of C/C composite were quantitatively analyzed based on the analytical model of thermal conductivity, which was defined as a function of the microscopic structure parameters of C/C composite with typical architectural feature. Based on the analysis results, HTC-C/Cs with different textures and dimensions were designed, prepared and characterized. As a result, the thermal conductivities of prepared unidirectional, 2D and 3D HTC-C/Cs were more than 700, 400 and 350 W/ m·K at room temperature, respectively.