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Injection-Molded Thermoplastic Foams for Sound Insulation.

机译：注塑成型的热塑性泡沫，用于隔音。

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摘要

Open-cell foam materials have many applications such as sound and thermal insulators, filter and separation membranes, scaffolds, battery electrode supports, and printing heads. Commercial open-cell polymeric foams have been almost exclusively manufactured with polyurethane thermoset materials. While the production of thermoplastic open-cell foam has been studied in batch foaming and extrusion systems, open-cell foaming with the injection molding process has not received enough attention due to its inherent challenge to produce an open-cell structure. However, despite that challenge, injection molding is one of the most cost-effective and widely used polymer processing technologies. Thermoplastic polymeric open-cell foams that are environmentally friendly and recyclable were developed for different applications including sound insulation using the injection molding machine process. This thesis work combines the conventional foam injection-molding process with mold opening and gas counter pressure techniques to achieve highly-expanded open-cell foam structures with/without an air-gap for sound insulation. Environmentally friendly and recyclable foams produced in this study showed promising results for sound insulation and sound absorption.
机译：开孔泡沫材料具有许多应用，例如隔音材料和隔热材料，过滤膜和分离膜，支架，电池电极支架和打印头。商业开孔聚合物泡沫几乎完全由聚氨酯热固性材料制成。虽然已经在间歇发泡和挤出系统中研究了热塑性开孔泡沫的生产，但是由于注射模制过程中的开孔泡沫固有的挑战，难以生产开孔结构，因此采用注射成型工艺的开孔泡沫并未得到足够的重视。但是，尽管存在挑战，但注塑成型是最经济高效且使用最广泛的聚合物加工技术之一。开发了环保且可回收的热塑性聚合物开孔泡沫，以用于各种应用，包括使用注塑机工艺进行隔音的应用。本文工作将传统的泡沫注射成型工艺与开模和气体反压技术相结合，以实现高度扩展的开孔泡沫结构，带有/不带有用于隔音的气隙。在这项研究中生产的环保和可循环利用的泡沫在隔音和吸声方面显示出令人鼓舞的结果。

著录项

  • 作者

    Jahani, Davoud.;

  • 作者单位

    University of Toronto (Canada).;

  • 授予单位 University of Toronto (Canada).;
  • 学科 Mechanical engineering.;Industrial engineering.
  • 学位 Ph.D.
  • 年度 2015
  • 页码 311 p.
  • 总页数 311
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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