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。
The theology 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 AI content in PACS will increase the viscosity, leading to a higher spinning temperature and poorer spinnability.
出处
《国防科技大学学报》
EI
CAS
CSCD
北大核心
2009年第6期144-148,共5页
Journal of National University of Defense Technology
基金
国家自然科学基金资助项目(59972042)