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- W3146257144 abstract "Based on the characteristics of gas compressibility, the concept of compressible gas-assisted extrusion was proposed. To verify the effect of compressible gas on polymer extrusion molding, the two-phase flow model(polymer melt phase and compressible gas phase) was established by means of finite element method, the non-isothermal viscoelastic numerical simulation of the compressible gas-assisted(CG) extrusion molding and the traditional without gas-assisted(TWG) extrusion method were performed. The density distribution of gas-assisted extrusion was not a constant value, but was different with the space distribution of pressure and temperature. Compared with the results of two kinds of extrusion methods, when the interaction of gas on polymer melts and gas compressibility were considered, all physical field distributions of CG extrusion method were obviously different from the TWG method. Shrinkage degree was more prominent when inlet pressure of gas phase increased, which was consistent with the results of experiments. These results and factors could not be reflected in the TWG extrusion simulation method." @default.
- W3146257144 created "2021-04-13" @default.
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- W3146257144 date "2015-01-01" @default.
- W3146257144 modified "2023-09-27" @default.
- W3146257144 title "Non-isothermal viscoelastic numerical analysis of compressible gas-assisted polymer extrusion molding" @default.
- W3146257144 hasPublicationYear "2015" @default.
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