Effect of gas on the polymer temperature in external gas-assisted injection molding
-
Taidong Li
,
Frederik Desplentere
Abstract
The introduction of gas is the principal difference between external gas-assisted injection molding (EGAIM) and conventional injection molding. In this study, the effects of gas thickness and gas delay time on polymer temperature were discussed. A modified one-dimensional transient heat conduction model of polymer was established to reveal the relationships between polymer temperature and gas thickness and gas delay time in EGAIM. The temperature histories of polymer were obtained by the simulation methods, including Moldflow and ANSYS, and were verified by comparing the experimental data to numerical simulation results. The effects of gas thickness and gas delay time on the temperature histories of polymer will be discussed in detail. The results showed that the polymer temperature is strongly affected by the heat preservation of gas, which in turn, increases with the increase of gas thickness and delay time. This paper provides quantitative methods and theoretical guidance for the study of the effects of gas on the polymer temperature in EGAIM.
Funding source: National Natural Science Foundation
Award Identifier / Grant number: 51575491, 51505421 and U1610112)
Funding source: Natural Science Foundation of Zhejiang Province
Award Identifier / Grant number: LY19E050004 and LY18E050020
Funding statement: This work was supported by the National Natural Science Foundation (Grant Nos. 51575491, 51505421 and U1610112) and the Natural Science Foundation of Zhejiang Province (Grant Nos. LY19E050004 and LY18E050020).
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©2019 Walter de Gruyter GmbH, Berlin/Boston
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Artikel in diesem Heft
- Frontmatter
- Material properties
- Thermal stability of xanthan gum biopolymer and its application in salt-tolerant bentonite water-based mud
- Thermal stability and dynamic mechanical behavior of functional multiphase boride ceramics/epoxy composites
- Influence of radiation-crosslinking on the elongation behaviour of glass-fibre-filled sheets in the thermoforming process
- Physicochemical and biological investigation of oxygen plasma modified electrospun polyurethane scaffolds for connective tissue engineering application
- Role of polymer/polymer and polymer/drug specific interactions in drug delivery systems
- Preparation and assembly
- Development of antimicrobial and antifouling nanocomposite membranes by a phase inversion technique
- Preparation of nano-SiO2 compound antioxidant and its antioxidant effect on polyphenylene sulfide
- Influence of mixing energy on the solid-state behavior and clay fraction threshold of PA12/C30B® nanocomposites
- Engineering and processing
- Analysis of the formation of gap-based leakages in polymer-metal electronic systems with labyrinth seals
- Effect of gas on the polymer temperature in external gas-assisted injection molding
