| 线性双峰聚乙烯/高压聚乙烯/线性低密度聚乙烯共混物的流变行为与力学性能 |
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| 引用本文： | 高俊刚,于茂赏,杨丽庭. 线性双峰聚乙烯/高压聚乙烯/线性低密度聚乙烯共混物的流变行为与力学性能[J]. 高分子材料科学与工程, 2004, 20(1): 136-139 |
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| 作者姓名： | 高俊刚 于茂赏 杨丽庭 |
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| 作者单位： | 河北大学化学与环境科学学院,河北,保定,071002;河北大学化学与环境科学学院,河北,保定,071002;河北大学化学与环境科学学院,河北,保定,071002 |
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| 基金项目： | 河北省自然科学基金(201068)，河北省教育厅科研基金(2000105)资助项目 |
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| 摘 要： | 研究了线性双峰聚乙烯(LBPE)、高压聚乙烯(LDPE)与线性低密度聚乙烯(LLDPE)共混物熔体的流变行为和力学性能。讨论了共混物的组成、剪切应力和剪切速率对熔体粘度和膨胀比的影响。结果说明，共混物熔体为假塑性流体，LBPE含量为70％时熔体粘度最大，含量高于60％时挤出胀大变小，含量高于40％时力学强度增大。
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| 关 键 词： | 线性双峰聚乙烯 高压聚乙烯 线性低密度聚乙烯 三元共混 流变性 力学性能 |
| 文章编号： | 1000-7555(2004)01-0136-04 |
| 修稿时间： | 2002-01-28 |
RHEOLOGICAL BEHAVIOR AND MECHANICAL PROPERTIES OF MELT OF LBPE/LDPE/LLDPE BLENDS |
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| GAO Jun-gang,YU Mao-shang,YANG Li-ting. RHEOLOGICAL BEHAVIOR AND MECHANICAL PROPERTIES OF MELT OF LBPE/LDPE/LLDPE BLENDS[J]. Polymer Materials Science & Engineering, 2004, 20(1): 136-139 |
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| Authors: | GAO Jun-gang YU Mao-shang YANG Li-ting |
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| Abstract: | Melts rheological behavior and Mechanical Properties of linear bimodal polyethylene (LBPE)/low-density polyethylene (LDPE)/Linear Low Density Polyethylene (LLDPE) blends were studied. Influences of composition of the blends, shear ratio, shear stress on swell ratio and melt apparent viscosity were discussed. It shows that melting blends are all pseudoplastic liquids, melt apparent viscosity value is the highest when LBPE content is 70%, extrusion swell ratios decrease when LBPE content is more than 60% and mechanical properties are apparently improved when LBPE content is more than 40% in the blends. |
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| Keywords: | LBPE LDPE LLDPE ternary blends rheological behavior mechanical property |
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