期刊文献+

高分子量聚碳硅烷的合成及其表征 被引量:1

Synthesis and Characterization of High Molecular Weight Polycarbosilane
下载PDF
导出
摘要 以常压合成的低分子量聚碳硅烷(PCS)为原料,分别在470℃高压及常压下反应一定时间,制备了高分子量PCS先驱体.研究了反应时间对PCS分子量及其分布、软化点、Si-H键含量及可纺性的影响.研究表明,随着反应时间的延长,PCS低分子量部分逐渐减少,高分子量部分逐渐增加,分子量分布逐渐变宽,从而PCS分子量逐渐增大,软化点逐渐升高,Si-H键含量逐渐降低,可纺性逐渐变差.在相同的反应时间下,高压比常压对PCS分子量的增长更有利.在470℃高压或常压下反应时间2~3h时,可获得分子量高、可纺性良好的PCS先驱体.
出处 《高技术通讯》 CAS CSCD 北大核心 2005年第3期60-63,共4页 Chinese High Technology Letters
基金 国家高技术研究发展计划(863计划)
  • 相关文献

参考文献10

  • 1宋永才,王岭,冯春祥.聚碳硅烷的合成与特性研究[J].高分子材料科学与工程,1997,13(4):30-33. 被引量:27
  • 2Laine R M, Babonneau F. Preceramic polymer routes to silicon carbide. Chem. Mater, 1993,5:260.
  • 3Birot M, Pillot J P, Dunogues J. Comprehensive chemistry of polycarbosilanes, polysilazanes, and polycarbosilazanes as precursors of ceramics. Chem. Rev, 1995,95:1443.
  • 4Yajima S, Hasegawa Y, Hayashi J. Synthesis of continuous silicon carbide fiber with high tensile strength and high Young's modulus. Part 1 Synthesis of polycarbosilane as precursor. J. Mater. Sci., 1978,13:2569.
  • 5Mah T, Hecht N L, Cullum D E M, et al. Thermal stability of SiC fibers (Nicalon). J. Mater. Sci., 1984,19:1191.
  • 6Takeda M, Urano A, Sakamoto J I, et al. Microstructure and oxidation behavior of silicon carbide fibers derived from polycarbisliane. J. Am. Ceram. Soc., 2000,83(5):1171.
  • 7Hasegawa Y, Okamura K. Synthesis of continuous silicon carbide fiber. Part 4 the structure of polycarbosilane as precursor. J. Mater. Sci., 1986,21:321.
  • 8Ly H Q, Taylor R, Day R J. Conversion of polycarbosilane (PCS) to SiC-based ceramic. Part I. Characterisation of PCS and curing products. J. Mater. Sci., 2001,36:4037.
  • 9范小林.[D].长沙: 国防科技大学,1999.
  • 10宋永才,王岭,冯春祥.聚碳硅烷的分子量分布与可纺性研究[J].高技术通讯,1996,6(1):6-8. 被引量:11

二级参考文献1

  • 1宋永才,J Mater Sci Lett,1992年,11卷,899页

共引文献29

同被引文献10

  • 1Yajima S,Okamura K, Hayashi J, et al. Synthesis of continuous silicon carbide fibers with high tensile strength [J].J Am Ceram Soc, 1976,59(7/8) : 324-- 327.
  • 2Birot M,Pillot J P,Dunogues J. Comorehensive chemistry of polycarbosilanes, polysilazanes, and potycarbosilazanes as precursor of ceramics[J]. Chem Rev,1995,95(5):1443 --1477.
  • 3Interrante L V, Moraes K,Liu Q,et al. Silicon-based ceramics from polymer precursors [J].Bure and Applied Chemistry, 2002,74(11) : 2111 --2117.
  • 4Fry B E, Guo A, Neckers D C. Photoactivated hydrosilation curing of a ceramic precursor., crosslinking and pyrolysis of branched oligo [ (methylsilylene) methylene] [J ]. J Organomet Chem, 1997,538 (1/2) : 151 -- 161.
  • 5Interrante L V,Jacobs J M, Sherwood W, et al. Fabrication and properties of fiber- and particulate-reinforced SiC matrix composites obtained with AHPCS as the matrix source[J]. Key Engineering Materials, 1997,127-131 : 271 --278.
  • 6Zheng J,AkincM. Green statejoining of SiC without applied pressure[J].J Am CeramSoc,2001,84(11):2479-- 2483.
  • 7Greber G, Degler G. Oligomeric silicon compounds with functional groups. VI. Preparation of homologous ω, ω'-di- chloropolysilmethylenes [J]. Makromolekulare Chemie, 1962,52:174--183.
  • 8Whitmarsh C K, Interrante L V. Synthesis and structure of a highly branched polycarbosilane derived from(ehlo- romethyl) trichlorosilane [J].Organometallics, 1991, 10 : 1336-1344.
  • 9Froehling P E. Synthesis and properties of a new, branched polyhydridocarbosilane as a precursor for silicon carbide[J]. J Inorg Organomet Polym, 1993,3 (3) : 251 -- 258.
  • 10Li H B,Zhang L T,Cheng L F,et al. Effect of the polycarbosilane structure on its final ceramic yield[J]. J Eur Ceram Soc, 2008,28: 887-- 891.

引证文献1

二级引证文献5

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部