| 挤出口型中混炼胶出口压力降的预测 |
| Prediction of Exit Pressure Drop of Rubber Mix in Extruder Die |
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| DOI： |
| 中文关键词: 混炼胶 挤出 出口压力降 |
| 英文关键词: rubber mix extrusion exit pressure drop |
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| 中文摘要: |
| 阐明混炼胶于口型流动中挤出胀大比B与出口压力降ΔPexit之间基本上呈幂律关系。应用文献中提出的数学模型，预测了两种混炼胶于毛细管挤出过程中的ΔPexit值。结果表明，ΔPexit，在末端压力损失中所占比例β随着剪切速率的增加而有所减小，β的平均值为150%—18%。 |
| 英文摘要: |
| It was shown in this paper that the power-law existed between the die swell ratio B and the exit pressure drop ΔPexit of the rubber mix during flowing in the extruder die.The Δ Pexit values of two rubber mixes during capillary extrusion were predicted using the mathematic model proposed in the previous paper.The result showed that the proportion β of Δ Pexit to the end pressure drop Δ Pend decreased as the shear ratio increased，the average value of β was 15%-18%. |
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