| 聚（2,5-苯并噁唑）的流变性能 |
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| 引用本文： | 刘兵,钱军,吴俊岭,韩哲文,范新年,许伟.聚（2,5-苯并噁唑）的流变性能[J].医学教育探索,2013,26(1). |
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| 作者姓名： | 刘兵 钱军 吴俊岭 韩哲文 范新年 许伟 |
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| 作者单位： | 华东理工大学特种功能高分子材料及相关技术教育部重点实验室， 上海 200237
2. 中蓝晨光化工研究设计院有限公司， 成都 610041;华东理工大学特种功能高分子材料及相关技术教育部重点实验室， 上海 200237
2. 中蓝晨光化工研究设计院有限公司， 成都 610042;华东理工大学特种功能高分子材料及相关技术教育部重点实验室， 上海 200237
2. 中蓝晨光化工研究设计院有限公司， 成都 610043;华东理工大学特种功能高分子材料及相关技术教育部重点实验室， 上海 200237
2. 中蓝晨光化工研究设计院有限公司， 成都 610044;中蓝晨光化工研究设计院有限公司， 成都 610041
2. 中蓝晨光化工研究设计院有限公司， 成都 610045;中蓝晨光化工研究设计院有限公司， 成都 610041
2. 中蓝晨光化工研究设计院有限公司， 成都 610046 |
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| 摘 要： | 用自制的3-氨基-4-羟基苯甲酸盐酸盐（ABBAH）在多聚磷酸（PPA）中合成聚（2,5-苯并噁唑）（ABPBO），利用衰减全反射红外光谱（ATR-IR)表征了其化学结构。分别用平板流变仪和毛细管流变仪对合成的ABPBO PPA溶液进行动态和稳态流变测试。结果表明： ABPBO-PPA溶液的储能模量（G′）和损耗模量（G″）均随频率升高而增大，且储能模量比损耗模量上升得更快；ABPBO-PPA溶液随温度升高趋于牛顿流体，随浓度升高非牛顿性更显著,ABPBO-PPA溶液表现出强烈的假塑性，并且不同温度下溶液的剪切黏度差值随剪切应力增大而减小。
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| 关 键 词： | 聚（2 5-苯并噁唑） 液晶高分子 流变性能 剪切变稀 |
Rheological Properties of Poly(2,5-benzoxazole) |
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| LIU Bing,QIAN Jun,WU Jun ling,HAN Zhe wen,FAN Xin nian and XU Wei.Rheological Properties of Poly(2,5-benzoxazole)[J].Researches in Medical Education,2013,26(1). |
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| Authors: | LIU Bing QIAN Jun WU Jun ling HAN Zhe wen FAN Xin nian and XU Wei |
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| Institution: | Key Laboratory for Specially Functional Polymeric Materials and Related Technology of
Ministry of Education, East China University of Science and Technology, Shanghai 200237, China;
2. China Bluestar Chengrand Chemical Co. Ltd., Chengdu 610041, China;Key Laboratory for Specially Functional Polymeric Materials and Related Technology of
Ministry of Education, East China University of Science and Technology, Shanghai 200237, China;
2. China Bluestar Chengrand Chemical Co. Ltd., Chengdu 610042, China;Key Laboratory for Specially Functional Polymeric Materials and Related Technology of
Ministry of Education, East China University of Science and Technology, Shanghai 200237, China;
2. China Bluestar Chengrand Chemical Co. Ltd., Chengdu 610043, China;Key Laboratory for Specially Functional Polymeric Materials and Related Technology of
Ministry of Education, East China University of Science and Technology, Shanghai 200237, China
Ministry of Education, East China University of Science and Technology, S;China Bluestar Chengrand Chemical Co. Ltd., Chengdu 610041, China
Ministry of Education, East China University of Science and Technology, Shanghai 200237, China;
2. China Bluestar Chengrand Chemical Co. Ltd., Chengdu 610045, China;China Bluestar Chengrand Chemical Co. Ltd., Chengdu 610041, China
Ministry of Education, East China University of Science and Technology, Shanghai 200237, China;
2. China Bluestar Chengrand Chemical Co. Ltd., Chengdu 610046, China |
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| Abstract: | Poly(2,5-benzoxazole) (ABPBO) was synthesized from 3-amino-4-hydroxybenzoic acid hydrochloride made by solution polycondensation in the solvent of polyphosphoric acid (PPA). Chemical structure of the polymer was tested with ATR-IR. Then the dynamic rheological behavior of ABPBO PPA solution was tested with a parallel plate rheometer, and the steady flow curve was tested with a capillary rheometer. Results showed that the storage and loss modulus increased as frequency increased, and storage modulus increased more quickly than the loss modulus. ABPBO-PPA solution tended to Newtonian fluid with the temperature rising. However, it tended to non Newtonian fluid with the increasing of the ABPBO-PPA concentration. ABPBO-PPA solution behaved sharp pseudoplastic. And the disparity of viscosities with different temperatures decreased with the shear stress increasing. |
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| Keywords: | ABPBO liquid crystalline polymer rheological capacity shear thinning |
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