| 聚铝碳硅烷的流变性和纺丝性研究 |
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| 引用本文： | 赵大方,王海哲,胡天娇,李效东.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. |
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| 作者姓名： | 赵大方 王海哲 胡天娇 李效东 |
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| 作者单位： | 1. 国防科技大学航天与材料工程学院,湖南,长沙,410073;装备指挥技术学院航天装备系,北京,101416
2. 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.
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| 关 键 词： | 聚铝碳硅烷 流变性能 纺丝性能 SiC纤维 SiC(Al)纤维 |
| 收稿时间： | 2009/4/21 0:00:00 |
Study on the Rheology and Spinnability of Polyaluminocarbosilane |
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| ZHAO Dafang,WANG Haizhe,HU Tianjiao and LI Xiaodong.Study on the Rheology and Spinnability of Polyaluminocarbosilane[J].Journal of National University of Defense Technology,2009,31(6):144-148. |
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| Authors: | ZHAO Dafang WANG Haizhe HU Tianjiao and LI Xiaodong |
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| Institution: | ZHAO Da-fang1,2,WANG Hai-zhe1,HU Tian-jiao1,LI Xiao-dong1 (1.College of Aerospace and Material Engineering,National Univ.of Defense Technology,Changsha 410073,China,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. |
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| Keywords: | polyaluminocarbosihne theology spinnability SiC fibers SiC (Al)fibers |
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