A New Silicon-Containing Arylacetylene Resin With Amine Groups as Precursor to Si-C-N Ceramic

作者：Zhang, Jian; Huang, Jiangxiang; Wang, Canfeng; Huang, Farong^*; Du, Lei

来源：Journal of Macromolecular Science Part B-Physics, 2009, 48(5): 1001-1010.

DOI：10.1080/00222340903011916

• cross-linking
• permittivity
• precursor
• pyrolysis
• Si-C-N ceramic
• silicon-containing arylacetylene resin

A new preceramic precursor was prepared by chlorination and ammoniation reaction of poly(methylsilyleneethynylenephenyleneethynylene) (MSEPE), [-SiH(CH3)-C C-C6H4-C C-](n). The obtained amine-modified silicon-containing arylacetylene resin (MSEPE-An) was a liquid polymer at room temperature and could be thermally cross-linked at temperatures lower than 200 degrees C. The chemical structure of MSEPE-An was characterized by FTIR, H-1 NMR, and GPC. The pyrolysis of the cured MSEPE-An was carried out in N-2 atmosphere up to 1450 degrees C to produce a Si-C-N ceramic composite. The ceramic composite was analyzed by FTIR and X-ray diffraction techniques. The electromagnetic wave absorption properties of a paraffin sample with 10 vol% Si-C-N ceramic powders were characterized in a frequency range of 2-18 GHz, according to a conventional reflection/transmission technique. Experimental results demonstrated that the Si-C-N ceramic composite provided good electromagnetic wave absorption performance.

• 出版日期2009
• 单位华东理工大学