| 引用本文: | 薛金根,王应德,宋永才,等.从LPS馏分出发合成先驱体聚碳硅烷.[J].国防科技大学学报,2006,28(2):35-38.[点击复制] |
| XUE Jingen,WANG Yingde,SONG Yongcai,et al.Synthesis of Polycarbosilane from the Distilled Fractions of LPS[J].Journal of National University of Defense Technology,2006,28(2):35-38[点击复制] |
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| 从LPS馏分出发合成先驱体聚碳硅烷 |
| 薛金根, 王应德, 宋永才, 秦墨林 |
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(国防科技大学 航天与材料工程学院，湖南 长沙 410073)
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| 摘要: |
| 采用将液态聚硅烷(LPS)蒸馏分级的方法，从各个馏分出发合成制备了先驱体聚碳硅烷(PCS)。运用GPC等分析测试手段考察比较了各个馏分的差异对在相同条件下所合成聚碳硅烷的分子量及其分子量分布特性的影响。研究表明：在同等条件下，采用以LPS蒸馏分级的方法再从各个馏分出发合成制备先驱体聚碳硅烷的总平均收率比未从经分级处理的LPS出发合成先驱体PCS的收率高35％左右；从200℃以下馏分出发可以合成制备超高分子量的先驱体PCS。 |
| 关键词: 先驱体 聚碳硅烷 级分 合成 |
| DOI： |
| 投稿日期：2005-07-11 |
| 基金项目:国家863计划资助项目(2002AA305101)；湖南省自然科学基金资助项目(02JJY2083) |
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| Synthesis of Polycarbosilane from the Distilled Fractions of LPS |
| XUE Jingen, WANG Yingde, SONG Yongcai, QIN Molin |
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(College of Aerospace and Materials Engineering，National Univ. of Defense Technology，Changsha 410073，China)
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| Abstract: |
| Polycarbosilane（PCS）was synthesized from the distilled fractions of liquid polysilane (LPS). By adopting the GPC technique，the influence of different distilled fractions of LPS on the molecular weight and their distribution of PCS was discussed in detail. It was found that the total average yield of PCS synthesized from the distilled fractions of LPS is about 35wt% higher than that of PCS synthesized from the untreated LPS under the same condition. In addition, PCS with a super high molecule weight can be synthesized from the distilled fractions of LPS treated below 200℃. |
| Keywords: precursor polycarbosilane distillation synthesis |
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