Study on the Pyrolysis Behavior of Polycarbosilane 被引量：2

Study on the Pyrolysis Behavior of Polycarbosilane

下载PDF

导出

摘要 The pyrolysis behavior of polycarbosilane （PCS） and chemical reaction mechanism during the pyrolysis process were studied by thermogravimetric-mass spectrometry （TG-MS） combined with X-ray diffraction and infrared spectroscopic analysis methods. The experimental results indicate that the main gas phase products generated during pyrolysis of PCS in nitrogen atmosphere include H2, -CH3 and CH4. The heating rate has a large effect on the pyrolysis process of PCS, the lower heating rate releases more small molecule gases and gets bigger rate of pyrolysis mass loss, demonstrating that the lower heating rate is beneficial to fully pyrolysis of PCS and obtain ceramics products with better microstructure. The pyrolysis behavior of polycarbosilane （PCS） and chemical reaction mechanism during the pyrolysis process were studied by thermogravimetric-mass spectrometry （TG-MS） combined with X-ray diffraction and infrared spectroscopic analysis methods. The experimental results indicate that the main gas phase products generated during pyrolysis of PCS in nitrogen atmosphere include H2, -CH3 and CH4. The heating rate has a large effect on the pyrolysis process of PCS, the lower heating rate releases more small molecule gases and gets bigger rate of pyrolysis mass loss, demonstrating that the lower heating rate is beneficial to fully pyrolysis of PCS and obtain ceramics products with better microstructure.

作者陈文怡 ZHOU Jian

机构地区 Materials Research and Testing Center State Key Lab of Advanced Technology for Materials Synthesis and Processing

出处《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2015年第4期679-683,共5页 武汉理工大学学报（材料科学英文版）

基金 Funded by the Natural Science Foundation of Hubei Province(No.2013CFB340)

关键词 POLYCARBOSILANE pyrolysis behavior thermogravimetric-mass spectrometry heating ratemass loss polycarbosilane pyrolysis behavior thermogravimetric-mass spectrometry heating ratemass loss

分类号 TQ264.17 [化学工程—有机化工]

引文网络
相关文献

参考文献17

1Komeya K, Matsuo, Goto YT. Preparation of Mesoporous Silicon Carbide[J]. Key. Eng. Mater., 2007, 352:95-99.
2Ding S, Zeng YP, Jiang D. Gas Permeability Behavior of Mullite Bonded Porous Silicon Carbide Ceramics[J]. J Mater. Sci., 2007, 42: 7171-7175.
3Dey A, Kayal N, Chakrabarti O. Evaluation of Air Permeation Behavior of Porous SiC Ceramics Synthesized by Oxidation-Bonding Technique[J]. Int. J Appl. Ceram. Technol., 2013, 10:1 023-1 033.
4He J, Ponton CB. Oxidation of SiC Powders for the Preparation of SiC/ Mullite/Mullite Nanocomposites[J]. J. Maten Sci., 2008, 43:4 031- 4 041.
5Chen S, Zhang Y, Zhang C, et al. A SimpLe Way to Prepare C/SiC Spring[J]. Int. J. Appl. Ceram. Technol., 2014, 11 : 186-192.
6Jacobson NS, Kline SE. A Thermoanalytical Study of the Conversion of Amorphous Si-Ti-C-O Fibers to SiC[J]. Int. J. Appl. Ceram. Technol., 2012, 9:816-822.
7Yamakami T, Yamaguchi T, Endo M, et al. Pressureless Sintering of Carbon Nanofibre/SiC Composites and Their Properties[J]. lnt. J Appl. Ceram. Technol., 2014,11: 280-288.
8Yan C, Liu R, Cao Y, et al. Preparation and Properties of 3D Needle- Punched C/ZrC-SiC Composites by Polymer Infiltration and Pyrolysis Process[J]. Ceram. lnt., 2014, 7:10 961-10 970.
9Yao R, Feng Z, Yu Y, et al. Synthesis and Characterization of Continuous Freestanding Silicon Carbide Films with Polycarbosilane (PCS) [J]. J. Eur. Cera. Soc., 2009, 29:2 079-2 085.
10Li Q, Yin X, Duan W, et al. Improved Dielectric and Electromagnetic Interference Shielding Properties of Ferrocene-modified Polycarbosilane Derived SiC/C Composite Ceramics[J]. J Eur. Cera. Soc., 2014, 34:2 187-2 201.