| Die Swell of Melted Compound in Extrusion |
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| DOI： |
| Key Words: compound；tension theology；stress relaxation；die swell |
| Author Name | Affiliation | | Zhao Liangzhi | South China University of Science and Technology | | Tang Guojun | South China University of Science and Technology | | Zheng Rong | South China University of Science and Technology |
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| Abstract: |
| Based on the theological theory of viscoelastic melt，a study was made of the dieswell of the melted compound in extrusion using tension analysis.The extrudate swell equations were derived：B=√3[(l+S2R)4/3一l]l/2/2SR(L/D→∞)， B2=3(l+K2S2R)l/3—6(1+K2S2R)-2/3/7(L/D→0).It was confirmed theoretically that the convergent tension theology was the main mechanism resulting in the higher die swell. |
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