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第13届国际传热学会年报
Graham de Vahl Davis (open in a new tab) School of Mechanical and Manufacturing Engineering, University of New South Wales, Kensington, NSW, Australia
Eddie Leonardi (open in a new tab) Computational Fluid Dynamics Research Laboratory, School of Mechanical and Manufacturing Engineering, The University of New South Wales, Sydney, Australia 2052

ISSN Online: 2377-424X

ISBN CD: 1-56700-226-9

ISBN Online: 1-56700-225-0

IMPROVING POLYMER PROCESSING TROUGH HEAT TRANSFER MASTERY: A NEW CHALLENGE

page 18
DOI: 10.1615/IHTC13.p30.320
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摘要

For polymer processing, the mastery of the temperature time history is a key-point to optimise the process. The thermal databases, and the corresponding equipments and methodologies are again too poor, especially for a non-isotropic temperature and state dependent properties. The thermal models are not sufficiently developed and in situ validated to be reliable. The couplings between physical, chemical, thermal, mechanical (of fluids and solids) phenomena are not enough properly described. We analyse two very typical process examples to illustrate these three points: first the injection molding of polymers and of composites made of glass fibres and semi crystalline thermoplastics and secondly the injection of thermosetting resin on woven reinforcements. Indeed, for these two processes software packages exist, allowing the virtual manufacturing of pieces. While developing the sequence of conception and moulding of a piece, and the optimisation of the process parameters, we will situate the limits and the stakes of the experimental analysis and of the simulation of heat transfer.

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