| A novel precursor polymer for continuous SiBN(C) ceramic fiber via co-condensation of B(NHCH3)3 and |
| 關(guān)鍵詞： |
SiB(C)N precursor SiB(C)N fibers melt-spinning |
| 類 別： |
纖維 >> 合成纖維 |
| 來 源： |
ICAFPM 2011 |
| 資料類型： |
pdf文件 |
| 資料大?。?/td>
| 1605K |
| 簡 介： |
A novel polyborosilazane precursor was synthesized by co-condensation route of B(NHCH3)3 and Si(NHCH3)4. The resulted polymer is a soluble yellow transparent fusant. The backbone of the polymer was mainly made of –Si-N-B-bridge with some borazine rings. The polymer showed good processability and liquidity, therefore, polymer fibers were obtained by melt spinning. The precursor polymer fiber could be changed into Si-B-N ceramic fiber by pyrolysis under a certain atmosphere. The composition and structure of precursors polymer and ceramic fiber were characterized by fourier transform infrared spectroscopy (FT-IR), nuclear magnetic resonance (NMR) and elemental analysis method (EA). The results showed that the structure of precursor polymer is a linear combination of ideal structure. The feature of the green fiber was observed by scanning electron microscope (SEM), the result was that the green fiber is uniform and smooth. |
| 上傳人： |
epce |
| 上傳時間： |
2011-10-12 13:23:10 |
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