化工新型材料

化工新型材料 ›› 2018, Vol. 46 ›› Issue (8) : 139-141.

科学研究

先驱体浸渍裂解工艺制备碳纤维增强氮化硼基复合材料

钟文丽, SamuelBERNARD, 王思清, 王应德, PhilippeMIELE

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Preparation of C fiber reinforced BN composite by polymer infiltration pyrolysis (PIP)

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2017-04-17
Issue Date	Revised Date
2018-09-18	2017-04-17

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摘要

以硼吖嗪作为单体,聚硼氮烷作为先驱体,利用先驱体浸渍裂解(PIP)工艺制得碳纤维(C)增强/氮化硼(BN)基复合材料(C/BN)。结果表明:将硼吖嗪在50～60℃条件下聚合得到聚环硼氮烷,经过10个聚合物的浸渍-裂解(N₂条件下加热至1450℃)周期,制得相对密度为94.7%的C/BN,BN基体均匀地分布在C纤维的周围,其界面结合强度低,材料表现出良好的高温稳定性,在真空条件下耐至1600℃,失重率为2%;当温度从常温升至600℃时,热导率达到5.25W/(m·℃)。

Abstract

By using borazine as precursor,polyborazylene as polymer,using polymer infiltration pyrolysis (PIP) process,carbon fiber reinforced boron nitride (C/BN) composites were prepared.The results showed that:by using polyborazylene obtained from thermolization of borazine at 50～60℃,after repeated 10 infiltration cycles of polyborazylene and the pyrolysis of green body at 1450℃ under nitrogen,dense C/BN composites with relative density of 94.7% can be successfully obtained.BN matrix appropriately filled the space between the fibers with a low fiber-matrix bonding.The composites had good high temperature stability:vacuum resistance was up to 1600℃ with weight loss rate as 2%.Increasing the temperature of exposure the thermal conductivity of C/BN increased as 5.25W/(m·℃) at 600℃.

关键词

氮化硼 / 硼吖嗪 / 聚硼氮烷 / 碳纤维 / 先驱体浸渍裂解

Key words

boron nitride / borazine / polyborazylene / carbon fiber / polymer infiltration pyrolysis

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钟文丽, SamuelBERNARD, 王思清, 王应德, PhilippeMIELE. 先驱体浸渍裂解工艺制备碳纤维增强氮化硼基复合材料[J]. 化工新型材料, 2018, 46(8): 139-141 DOI:

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参考文献

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