| 聚丙烯熔体的零切变粘度与粘均分子量的关系 |
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| 引用本文： | 赵得禄,范庆荣,钱人元,徐端夫.聚丙烯熔体的零切变粘度与粘均分子量的关系[J].高分子学报,1981,0(5):385-388. |
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| 作者姓名： | 赵得禄 范庆荣 钱人元 徐端夫 |
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| 作者单位： | 中国科学院化学研究所
(赵得禄，范庆荣，钱人元)，中国科学院化学研究所(徐端夫) |
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| 摘 要： | <正> 零切变粘度η_0是聚丙烯熔体流变性能的一个基本物理量,零切变粘度-分子量关系不仅具有理论上的兴趣,而且也有较大的实用意义。在文献中零切变粘度通常都是用毛细管粘度计数据外推求得的,但是由于聚丙烯熔体有较强的非牛顿性,即使在毛细管粘度计测量下限测得的粘度仍表现出明显的切变速率依赖性。因此,难于用外推的方法
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| 收稿时间： | 1980-10-10 |
RELATIONSHIP BETWEEN THE ZERO SHEAR RATE VISCOSITIES OF PP MELT AND ITS VISCOSITY AVERAGE MOLECULAR WEIGHTS |
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| Zhao De-lu,Fan Qing-rong,Qian Ren-yuan,Xiu Duan-fu.RELATIONSHIP BETWEEN THE ZERO SHEAR RATE VISCOSITIES OF PP MELT AND ITS VISCOSITY AVERAGE MOLECULAR WEIGHTS[J].Acta Polymerica Sinica,1981,0(5):385-388. |
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| Authors: | Zhao De-lu Fan Qing-rong Qian Ren-yuan Xiu Duan-fu |
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| Affiliation: | Institute of Chemistry; Academica Sinica |
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| Abstract: | The viscosity of PP melt in very low shear rate region was measured by the falling ball viscometer at 230℃. It is shown that the falling ball viscosity can be regarded as its zero shear rate viscosity. A relationship between the zero shear rate viscosities of PP melt and its viscosity average molecular weights was found aslog η0 = 3.72 log Mη, - 15.569(230℃) |
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