Please wait a minute...
 首页  期刊简介 期刊订阅 广告合作 联系我们
 
最新录用  |  当期目录  |  过刊浏览  |  热点文章  |  阅读排行
化工新型材料  2018, Vol. 46 Issue (10): 119-122    
  新材料与新技术 本期目录 | 过刊浏览 | 高级检索 |
辐射氧化法制备低含氧量碳化硅纤维 及耐温性能的研究
刘伟华,吴永龙,张文发,张文礼,李诚,吴国忠,王谋华*
中国科学院上海应用物理研究所,上海201800
SiC fiber obtained by radiation oxidation and study on the thermal stability
Liu Weihua, Wu Yonglong , Zhang Wenfa, Zhang Wenli, Li Cheng , Wu Guozhong , Wang Mouhua
Shanghai Institute of Applied Physics,Shanghai 201800
下载:  PDF (1909KB) 
输出:  BibTeX | EndNote (RIS)      
摘要 采用辐射氧化联合热交联技术制备碳化硅(SiC)纤维,利用红外光谱研究辐照及热处理前后纤维的化学结构变化,并对它们及SiC纤维中的氧含量进行测定;采用强度变化评估SiC纤维的热稳定性,通过X射线衍射和扫描电镜等手段研究其微观结构变化。结果表明:辐射氧化主要引入了Si—OH活性基团,该基团在热交联过程中参与反应。SiC纤维中的氧含量可通过调节剂量得到控制,最低仅为6%,吸收剂量仅为200kGy;热稳定性与氧含量密切相关,氧含量降低,耐温性能得到提升,1400℃热处理后强度保留率为75%,1500℃处理后强度损失与晶粒增大及氧化物高温分解相关。
服务
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章
刘伟华
吴永龙
张文发
张文礼
李诚
吴国忠
王谋华
关键词:  辐射氧化  热交联  SiC纤维  氧含量  耐温性能    
Abstract: Sillicon carbide fibers were prepared from polycarbosilane(PCS) fibers by radiation oxidation & thermal curing technique.The chemical structure of PCS fibers after radiation oxidation and thermal curing process was studied using FT-IR,and the oxygen content of all the fibers was determined.The thermal stability of SiC fiber was evaluated via the loss of strength and the microstructure changes was shown using XRD and SEM.It was found that Si—OH was introduced onto PCS fibers molecular chains by radiation oxidation and then consumed in thermal curing reaction.The oxygen content of SiC fibers with a minimum of 6% at 200kGy could be controlled by adjusting dose.Thermal stability of SiC fiber was closely related to oxygen content and the retention rate of strength at 1400℃ was 75% for SiC fibers with lower oxygen content.The strength loss at 1500℃ was found to be related to crystal growth and decomposition of oxidation product.
Key words:  radiation oxidation    thermal crosslinking    SiC fiber    oxygen content    thermal stability
               出版日期:  2018-10-20      发布日期:  2018-11-06      期的出版日期:  2018-10-20
基金资助: 国家自然科学基金(11505268和11575279);上海市自然科学基金(15ZR1448600)
通讯作者:  王谋华。   
作者简介:  刘伟华(1986-),女,博士,助理研究员,主要从事高分子材料的辐照改性研究。
引用本文:    
刘伟华,吴永龙,张文发,张文礼,李诚,吴国忠,王谋华. 辐射氧化法制备低含氧量碳化硅纤维 及耐温性能的研究[J]. 化工新型材料, 2018, 46(10): 119-122.
Liu Weihua,Wu Yonglong,Zhang Wenfa,Zhang Wenli,Li Cheng,Wu Guozhong,Wang Mouhua. SiC fiber obtained by radiation oxidation and study on the thermal stability. New Chemical Materials, 2018, 46(10): 119-122.
链接本文:  
http://www.hgxx.org/CN/  或          http://www.hgxx.org/CN/Y2018/V46/I10/119
[1] 林智群,雷永鹏.碳化硅陶瓷纤维的性能及其在航空航天领域的应用[J].飞航导弹,2008(2):55-57,64.
[2] Yajima S,Hayashi J,Omori M.Continuous silicon-carbide fiber of high tensile strength[J].Chemistry Letters,1975,4:931-934.
[3] Shin D G.Thermal oxidation curing of polycarbosilane for SiOC fiber process[J].Asian Journal of Chemistry,2014,26:4121-4124.
[4] Ichikawa H.Development of high performance SIC fibers derived from polybosilane ssing electron beam irradiation curing-a review[J].Journal of the Ceramic Society of Japan,2006,114(1330):455-460.
[5] 叶泽文,王谋华,吴国忠.低剂量γ射线辐射氧化法制备SiC纤维研究[J].化工新型材料,2014,42(3):60-62,65.
[6] 黎阳,许云书,徐光亮,等.空气中γ射线辐照聚碳硅烷陶瓷先驱丝热解合成SiC纤维[J].核化学与放射化学,2007,29(3):166-170.
[7] 戚英娜,王谋华,宋永才,等.聚碳硅烷纤维的辐照氧化联合热处理研究[J].化工新型材料,2011,39(10):85-87.
[8] 童林剑,苏智明,龚朝阳,等.含氧气氛下电子束辐照聚碳硅烷制备碳化硅纤维[J].硅酸盐学报,2009,37(7):1160-1164.
[9] Li H B,Zhang L T,Cheng L F,et al.Effect of the polycarbosilane structure on its final ceramic yield[J].Journal of the European Ceramic Society,2008,28(4):887-891.
[10] Schmidt W R,Interrante L V,Doremus R H,et al.Pyrolysis chemistry of an organometallic precursor to silicon-carbide[J].Chemistry of Materials,1991,3(2):257-267.
[11] Shimoo T,Okamura K,Mutoh W.Oxidation behavior and mechanical properties of low-oxygen SiC fibers prepared by vacuum heat-treatment of electron-beam-cured poly(carbosilane) precursor[J].Journal of Material Science,2003,38:1653-1660.
[12] Shimoo T,Okamura K,Tsukada I,et al.Thermal stability of low-oxygen SiC fibers fired under different conditions[J].Journal of Materials Science,1999,34(22):5623-5631.
No related articles found!
[1] Xiao Yu, Lv Cheng, Zhang Guoyou. Epoxy resin modified by PMMA microsphere wrapped by graphene oxide[J]. New Chemical Materials, 2017, 45(9): 62 -64 .
[2] Niu Yongping, Liu Renhui, Du Sanming, Wang Xiaowei. Influence of POE-g-MAH and 6k carbon fiber on properity of nylon 66[J]. New Chemical Materials, 2018, 46(2): 119 -122 .
[3] Fan Yangyang, Li Bin, Zhang Chen, Chen Liangbing, Liu Yanjun. Preparation property of semi-permanent mold release agent at room temperature[J]. New Chemical Materials, 2018, 46(3): 200 -202 .
[4] Zhou Jing, Hu Lihong, Zhou Yonghong, Bo Caiying, Jia Puyou. Preparation and characterization of lignin-based phenolic molding compound[J]. New Chemical Materials, 2018, 46(4): 78 -81 .
[5] Chang Lin, Zhao Yuntao, Bi Yinping, Ren Yiwei. Preparation and characterization of sodium polystyrene sulfonate grafted polysulfone forward osmosis membrane[J]. New Chemical Materials, 2018, 46(7): 114 -117 .
[6] Cai Tingting, Liu Rongwei, Wang Yuanyuan, Zhai Yongxing, Duan Ze, Zhang Jian. Preparation and electrochemical performance test of nickel cobalt sulfide/carbon microsphere electrode[J]. New Chemical Materials, 2018, 46(8): 119 -122 .
[7] Chu Ganghui, Ayiguzhalihan Mamat. Study on adsorption of anionic and cationic dyes on surfactant modified badam shell[J]. New Chemical Materials, 2018, 46(8): 202 -205 .
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
京ICP备09035943号-38
版权所有 © 《化工新型材料》编辑部
本系统由北京玛格泰克科技发展有限公司设计开发 技术支持:support@magtech.com.cn