| 引用本文: | 薛金根,楚增勇,冯春祥,等.PDMS直接裂解重排合成PCS.[J].国防科技大学学报,2001,23(5):36-39.[点击复制] |
| XUE Jingen,CHU Zengyong,FENG Chunxiang,et al.Direct Synthesis of PCS from PDMS[J].Journal of National University of Defense Technology,2001,23(5):36-39[点击复制] |
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| PDMS直接裂解重排合成PCS |
| 薛金根, 楚增勇, 冯春祥, 徐杰栋 |
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(国防科技大学 航天与材料工程学院CFC国防科技重点实验室, 湖南 长沙 410073)
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| 摘要: |
| 聚二甲基硅烷（PDMS）高温裂解制备的聚碳硅烷（PCS）是陶瓷材料的良好先驱体。本文在现有液态聚硅烷（LPS）间接合成PCS工艺的基础上，直接由固态PDMS高温裂解重排制备PCS，利用正交设计的方法研究了不同合成条件对PCS结构、分子量及分子量分布的影响，得出了最佳合成条件，即反应温度455℃，裂解温度540℃，保温时间6h。 |
| 关键词: 聚二甲基硅烷 聚碳硅烷 裂解 直接合成 |
| DOI： |
| 投稿日期：2001-03-10 |
| 基金项目:863计划重点资助 |
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| Direct Synthesis of PCS from PDMS |
| XUE Jingen, CHU Zengyong, FENG Chunxiang, XU Jiedong |
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(Key Lab. of New Ceramic Fibers & Composites, School of Aerospace and Materials Engineering, National Univ. of Defence Technology, Changsha, 410073,china)
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| Abstract: |
| Polycarbonsilane (PCS) synthesized from polydimethelsilane (PDMS) is an excellent precursor to ceramic materials. On the base of an indirect way involving intercurrent liquid polysilane (LPS), this paper studied a direct way to synthesis PCS from solid PDMS. By the application of orthogonal design, influence of synthesis conditions on the structure and molecular weight of PCS were studied. And the optimized synthesis condition was obtained as reaction temperature, 455℃, pyrolysis temperature, 540℃ and retaining time, 6 hours. |
| Keywords: Polydimethelsilane Polycarbonsilane Pyrolysis Direct synthesis |
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