Study of the bubble nucleation and growth mechanisms in high-pressure foam injection molding through in-situ visualization
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- 作者：Vahid Shaayegan ; Guilong Wang ; Chul B. Park ; park@mie.utoronto.ca" class="auth_mail" title="E-mail the corresponding author
- 关键词：High-pressure foam injection molding ; Cell nucleation mechanism ; In-situ visualization ; Polystyrene
- 刊名：European Polymer Journal
- 出版年：2016
- 出版时间：March 2016
- 年：2016
- 卷：76
- 期：Complete
- 页码：2-13
- 全文大小：2667 K
文摘
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In-situ mold visualization is used to investigate the cell nucleation mechanisms.
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Cell nucleation mechanisms in high-pressure foam injection molding are identified.
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Low-pressure foaming is governed by the pressure drop obtained at the gate.
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High-pressure foaming is governed by pressure drop obtained during melt shrinkage.
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Melt packing pressure was used to dissolve back the gate-nucleated bubbles in melt.