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| LLDPE／LDPE共混物熔体挤出胀大行为的研究 | |
| 引用本文： | 梁基照. LLDPE／LDPE共混物熔体挤出胀大行为的研究[J]. 广州化工, 1996, 24(2): 19-23 |
| 作者姓名： | 梁基照 |
| 作者单位： | 华南理工大学化工机械系 |
| 摘 要： | 应用毛细管流变仪，考察了实验条件下线性低密度聚乙烯与低密度聚乙烯共混物（ＬＬＤＰＥ／ＬＤＰＥ）熔体挤出胀大行为及其影响因素。结果表明，挤出胀大比Ｂ与剪切应力近似呈幂律关系，而随口型长径比的增加呈指数衰减，当共混比为５０／５０时，Ｂ产生局部极涉值现象。 |
| 关 键 词： | 聚乙烯 共混 低密度聚乙烯 挤出成型 |
Research on the Extrudate Swell Behaviour of LLDPE/LDPE Blend Melt |
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| Liang Jizhao. Research on the Extrudate Swell Behaviour of LLDPE/LDPE Blend Melt[J]. GuangZhou Chemical Industry and Technology, 1996, 24(2): 19-23 | |
| Authors: | Liang Jizhao |
| Abstract: | The extrudate swell behaviour of linear low density polyethylene and low density polyethylene blend (LLDPE/LDPE) melt is studied by means of a capillary rheometer. The results Show that the power law relationship between the die swell ratio B for the sample melt and shear stress is approximately presented, and the values of B are attenuated in a form of index with Increasing the die length-diamter ratios under the test conditions; a local minimum phenomenon for B is formed when the blending ratio is 50:50. |
| Keywords: | polyethylene blending extrudate swell |
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