| 无机盐对丙烯腈与N-乙烯基吡咯烷酮共聚物溶液黏度的影响 |
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| 引用本文： | 陈厚,王成国,蔡华甦. 无机盐对丙烯腈与N-乙烯基吡咯烷酮共聚物溶液黏度的影响[J]. 化工学报, 2003, 54(10): 1497-1500 |
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| 作者姓名： | 陈厚 王成国 蔡华甦 |
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| 作者单位： | 山东大学材料科学与工程学院， 山东 济南 250061 |
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| 摘 要： | 引 言黏度是碳纤维前驱体聚丙烯腈原丝纺丝工艺过程中重要的控制指标之一 .为得到高性能的原丝 ,一般采用提高共聚物的分子量、增加纺丝原液中共聚物的浓度或改变共聚单体等方法 ,结果使得纺丝原液黏度急剧上升 ,纺丝压力过大 ,不便于输送 ,易出现危险 .增加共聚单体的含量可降低原液黏度 ,但共聚单体的含量也有极限值[1,2 ] .少量文献曾提到过无机盐对聚丙烯腈溶液黏度是有影响的[3 ,4] ,指出某些无机盐的加入可使得丙烯腈共聚物溶液黏度下降[5] ,这对于原丝生产具有重要意义 ,但对于原液中常出现的离子Na 、Zn2 、Fe3 、Cu2 、K 、…
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| 关 键 词： | 无机盐 丙烯腈 N-乙烯基吡咯烷酮 黏度 |
| 文章编号： | 0438-1157(2003)10-1497-04 |
| 收稿时间： | 2002-08-13 |
| 修稿时间： | 2002-08-13 |
EFFECT OF INORGANIC SALTS ON VISCOSITY OF ACRYLONITRILE/N-VINYLPYRROLIDONE COPOLYMER SOLUTIONS |
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| CHEN Hou,WANG Chengguo,CAI Huasu. EFFECT OF INORGANIC SALTS ON VISCOSITY OF ACRYLONITRILE/N-VINYLPYRROLIDONE COPOLYMER SOLUTIONS[J]. Journal of Chemical Industry and Engineering(China), 2003, 54(10): 1497-1500 |
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| Authors: | CHEN Hou WANG Chengguo CAI Huasu |
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| Abstract: | Effect of inorganic salts on viscosities of dimethyl sulphoxide(DMSO)solutions of acrylonitrile(AN)/N-vinylpyrrolidone(N-VP) copolymer was discussed. Viscosity was determined by revolving viscosimeter. It was shown that solution viscosity decreased quickly with addition of KCl and NaCl and the effect of NaCl was more prominent than KCl. As the concentration of KCl and NaCl beyond 0.025mol*L-1, the viscosity tended to increase. The viscosity increased considerably with addition of FeCl3 and CuCl2. The change of solution viscosity became less obvious with addition of ZnCl2.With increasing temperature, the viscosity of copolymer solution containing NaCl decreased most quickly and the copolymer solution containing FeCl3 decreased most slowly. |
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| Keywords: | inorganic salts acrylonitrile N vinylpyrrolidone viscosity |
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