| 引用本文: | 赵大方,王海哲,胡天娇,等.聚铝碳硅烷的流变性和纺丝性研究.[J].国防科技大学学报,2009,31(6):144-148.[点击复制] |
| ZHAO Dafang,WANG Haizhe,HU Tianjiao,et al.Study on the Rheology and Spinnability of Polyaluminocarbosilane[J].Journal of National University of Defense Technology,2009,31(6):144-148[点击复制] |
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| 聚铝碳硅烷的流变性和纺丝性研究 |
| 赵大方1,2, 王海哲1, 胡天娇1, 李效东1 |
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(1.国防科技大学 航天与材料工程学院，湖南 长沙 410073;2.装备指挥技术学院 航天装备系，北京 101416)
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| 摘要: |
| 采用单孔纺丝装置对不同铝含量的聚铝碳硅烷(PACS)的流变性和流变性进行研究。结果表明：随着温度升高，PACS熔体的流体特性逐渐接近牛顿流体；PACS熔体粘度对温度有强烈的依赖性，其软化点在190℃～220℃范围时，其粘流活化能在190～260kJ/mol之间；当PACS的粘度在100Pa·s左右时可纺性好；铝含量对PACS的流变性能和可纺性有重要的影响，随着铝含量的增加，PACS熔体的粘度增大，因而PACS的纺丝温度更高，可纺性变差。 |
| 关键词: 聚铝碳硅烷 流变性能 纺丝性能 SiC纤维 SiC(Al)纤维 |
| DOI： |
| 投稿日期：2009-04-21 |
| 基金项目:国家自然科学基金资助项目(59972042) |
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| Study on the Rheology and Spinnability of Polyaluminocarbosilane |
| ZHAO Dafang1,2, WANG Haizhe1, HU Tianjiao1, LI Xiaodong1 |
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(1.College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China;2. 2.Department of Space Equipment, the Academy of Equipment Command and Technology, Beijing 101416, China)
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| Abstract: |
| The rheology and spinnability of PACS with various aluminum contents were studied by a single-pole spinning equipment. It has been shown that: the melting PACS behaves to be a near-Newton fluid with increasing temperature. The viscosity of PACS strongly depends on the temperature. Its apparent viscosity energy occurs between the range of 190～260 kJ/mol when its softening point lies between the range of 190℃～220℃. Its spinnability is good when its viscosity is about 100Pa·s. It is revealed that the higher Al content in PACS will increase the viscosity, leading to a higher spinning temperature and poorer spinnability. |
| Keywords: polyaluminocarbosilane rheology spinnability SiC fibers SiC(Al)fibers |
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