| 凝胶纺三元聚丙烯腈原液的流变行为 |
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| 引用本文： | 马彩霞,杜卫平,秦宗益,潘鼎.凝胶纺三元聚丙烯腈原液的流变行为[J].炭素,2009(1):14-17,13. |
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| 作者姓名： | 马彩霞 杜卫平 秦宗益 潘鼎 |
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| 作者单位： | 东华大学材料学院,国家纤维材料改性重点实验室,上海,201620 |
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| 基金项目： | 国家自然科学基金，国家重点基础研究发展规划(973计划)，上海基础理论项目 |
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| 摘 要： | 研究了聚丙烯腈／二甲基亚砜／水三元纺丝原液在不同的含水量、聚丙烯腈浓度和温度下的流变性能，获得了零切粘度，表观粘度，非牛顿指数和结构粘度指数对于原液含水量、聚丙烯腈浓度和温度的依赖关系。该溶液是一种剪切变稀的非牛顿流体。随着含水量的增加，零切粘度、表观粘度和结构粘度指数增加，非牛顿指数下降。随着聚丙烯腈浓度的增加，原液的袁观粘度和结构粘度指数增加，非牛顿指数下降。原液的流动性和可纺性随温度提高而增加。
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| 关 键 词： | 聚丙烯腈 碳纤维 凝胶纺丝 流变 |
RHEOLOGICAL PROPERTY OF TERNARY POLYACRYLONITRILE SOLUTIONS FOR GEL SPINNING |
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| Ma Cai-xia,Du Wei-ping,Qin Zong-yi,Pan Ding.RHEOLOGICAL PROPERTY OF TERNARY POLYACRYLONITRILE SOLUTIONS FOR GEL SPINNING[J].Carbon,2009(1):14-17,13. |
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| Authors: | Ma Cai-xia Du Wei-ping Qin Zong-yi Pan Ding |
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| Affiliation: | (College of Material Science and Engineering ,State Key Laboratory for Chemical Fibers Modification and Polymer Materials,Donghua University, Shanghai 201620, China) |
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| Abstract: | The rheological property of polyacrylonitrile/DMSO/H2O ternary solutions was investigated with different water contents, polyacrylonitrile concentrations,and temperatures. Zero shear viscosity, apparent viscosity , non - Newtonian index,and structural viscosity index were obtained as a function of nonsolvent contents,polyacrylonitrile concentrations,and temperatures. The solutions exhibit a shear thinning non- Newtonian fluid. With the increasing of the water contents,zero shear viscosity, apparent viscosity, and structural viscosity index increase,whereas non-Newtonian index n decreases. With the increasing of polyacrylonitrile concentration,apparent viscosity and structural viscosity index increase, whereas non-Newtonian index n decreases. When the temperature raises,the liquidity and spinnability of the solution also increase. |
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| Keywords: | polyacrylonitrile carbon fiber gel spinning rheology |
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