[1]何鳳梅,李仲平,馮志海,等.PAN碳纖維高溫?zé)醾鬏斝阅鼙碚鱗J].中國(guó)材料進(jìn)展,2013,(4):011-20.[doi:10.7502/j.issn.1674-3962.2013.04.06]
He Fengmei Li zhongping Feng Zhihai Chen Conghui Li Qi Wang Xiaoye.Evaluation of Thermal Transmission Properties of PAN Carbon Fiber at High Temperature[J].MATERIALS CHINA,2013,(4):011-20.[doi:10.7502/j.issn.1674-3962.2013.04.06]
點(diǎn)擊復(fù)制
PAN碳纖維高溫?zé)醾鬏斝阅鼙碚?/span>(
)
中國(guó)材料進(jìn)展[ISSN:1674-3962/CN:61-1473/TG]
- 卷:
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- 期數(shù):
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2013年第4期
- 頁(yè)碼:
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011-20
- 欄目:
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特約研究論文
- 出版日期:
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2013-04-30
文章信息/Info
- Title:
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Evaluation of Thermal Transmission Properties of PAN Carbon Fiber at High Temperature
- 作者:
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何鳳梅; 李仲平; 馮志海; 陳聰慧; 李琦; 王曉葉
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（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，北京，100076）
- Author(s):
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He Fengmei Li zhongping Feng Zhihai Chen Conghui Li Qi Wang Xiaoye
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(Science and Technology on Advanced Functional Composites Laboratory, Aerospace Research Institute of Materials ＆Processing Technology ，Beijing 100076)
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- 關(guān)鍵詞:
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碳纖維; 熱導(dǎo)率; 熱擴(kuò)散率; 高溫; 表征方法
- DOI:
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10.7502/j.issn.1674-3962.2013.04.06
- 文獻(xiàn)標(biāo)志碼:
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A
- 摘要:
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采用激光脈沖方法，通過(guò)平行集束、切割、打磨等系列措施制備了合格樣品。對(duì)兩種含碳量略有不同的PAN T300級(jí)碳纖維，分別測(cè)試獲得了100～800 ℃表面上漿劑脫除、1 300～1 800 ℃的非碳元素脫除、1 800～2 500℃碳結(jié)構(gòu)調(diào)整和100～2 700 ℃碳結(jié)構(gòu)優(yōu)化等四個(gè)不同階段的熱擴(kuò)散率和熱導(dǎo)率實(shí)測(cè)數(shù)據(jù)。結(jié)果表明：除漿階段，熱擴(kuò)散率緩慢減小，熱導(dǎo)率緩慢增加；非碳脫除階段，熱擴(kuò)散率和熱導(dǎo)率急劇增加；調(diào)整階段，熱擴(kuò)散率和熱導(dǎo)率增速比非碳脫除階段明顯降低，但比除漿階段增速大；經(jīng)2 500 ℃處理后，再進(jìn)行100 ℃～2 700 ℃測(cè)試，其熱擴(kuò)散和熱導(dǎo)率隨溫度變化規(guī)律與C/C和石墨類(lèi)材料相同，數(shù)值比原始狀態(tài)的碳纖維增大了約20倍。經(jīng)XRD微晶尺寸分析，進(jìn)一步說(shuō)明了其熱傳導(dǎo)機(jī)制主要受非碳雜質(zhì)含量和結(jié)構(gòu)有序化程度控制。
- Abstract:
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The thermal diffusivity of two kinds of T300 carbon fiber containing different carbon was measured by laser flashing method at temperature 100～2 700 ℃, and the crystallographic parameter was measured by Xray diffraction (XRD) using the Rietveld method after high temperature testing. The results show that thermal diffusivity decreases slowly and thermal conductivity increases in the stage of taking off the resin around the carbon fiber at 100～800 ℃, and the thermal diffusivity and thermal conductivity increase synchronously at 1 300～1 800 ℃ in noncarbon going off stage. Comparing noncarbon going off stage, thermal diffusivity and thermal conductivity in carbon configuration adjusting and optimizing stage increase more slowly at 1 800～2 500 ℃. After 2 500 ℃ treatment the thermal diffusivity and thermal conductivity are similar to those of C/C and graphite, and the datas of the thermal conductivity increase almost 20 times than the original carbon fiber in 100～2 700 ℃.
更新日期/Last Update:
2013-04-16