| PE-LLD/乙烯基笼形倍半硅氧烷共混熔体的流变行为与力学性能 |
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| 引用本文： | 花东栓,高俊刚,秦江雷.PE-LLD/乙烯基笼形倍半硅氧烷共混熔体的流变行为与力学性能[J].中国塑料,2008,22(7):62-66. |
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| 作者姓名： | 花东栓 高俊刚 秦江雷 |
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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 |
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| 基金项目： | 河北省自然科学基金资助项目(E2007000204) |
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| 摘 要： | 采用毛细管流变仪研究了线形低密度聚乙烯( PE-LLD)与乙烯基笼形倍半硅氧烷(E-POSS)共混物熔体的流变行为;讨论了共混物的组成、剪切应力、切变速率及温度对熔体流变性、非牛顿指数和挤出膨胀比的影响;测定了共混物的屈服应力、断裂应力和断裂伸长率对E-PUSS含量的依赖性。结果表明，E-PUSS加人量在J%以内和实验温度低于160℃熔体的流动性随切应力增大而变好，假塑性增强，超过3%和高于160℃假塑性降低。PE-LLD/E-PUSS共混物的强度在E-PUSS含量为3%时达到最大。
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| 关 键 词： | 乙烯基笼形倍半硅氧烷 线形低密度聚乙烯 流变行为 力学性能 |
| 收稿时间： | 2008-03-06 |
Rheological and Mechanical Properties of PE-LLD/E-POSS Blend |
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| HUA Dong-shuan GAO Jun-gang QIN Jiang-lei.Rheological and Mechanical Properties of PE-LLD/E-POSS Blend[J].China Plastics,2008,22(7):62-66. |
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| Authors: | HUA Dong-shuan GAO Jun-gang QIN Jiang-lei |
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| Affiliation: | College of Chemistry and Environmental Science, Hebei University, Banding 071002，China |
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| Abstract: | The rheological behavior of linear low-density polyethylene (PE-LLD)/ethylene-silsesquiox- ane (E-POSS) blend was investigated using a capillary rheometer.Influences of composition of the blends,shear rate and shear stress on melt apparent viscosity were discussed.Non-Newtonian index (n),swell ratio,conventional yield stress,breaking strength,and breaking extensibility of the blends at different contents of E-POSS were measured.It showed that the PE-LLD/E-POSS blends were pseu- doplastic.When the content of... |
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| Keywords: | ethylene-silsesquioxane linear low-density polyethylene rheological behavior mechanical property |
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