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The relationship between processing conditions and properties in chemically blown injection molded nylon foams

机译：化学吹塑尼龙泡沫塑料中加工条件与性能之间的关系

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摘要

The thesis describes the effect of processing conditions and various blowing agents on injection molded nylon foams. The types of chemical blowing agents investigated were endothermic: $rm Safoamspcircler$ RPC and exothermic: Expandex 5PT. Two different grades of nylon were used, namely nylon 6 and nylon copolymer. Six different processing conditions were used. It was found that exothermic blowing agent, i.e., $rm Expandexspcircler$ 5PT led to greater amount of density reduction, as low as 50%, but poorer cell structure. Whereas, the use of endothermic blowing agent, $rm Safoamspcircler$ RPC, resulted in lower amount of density reduction (about 40%) but uniform cell structure with smaller cells. It was observed that, as the density was reduced, the cell size increased and the solvent (fuel) resistance decreased. Nylon 6 foams had better solvent resistance than nylon copolymer foams.
机译：本文描述了加工条件和各种发泡剂对注塑尼龙泡沫的影响。所研究的化学发泡剂的类型是吸热的：$ rm Safoamspcircler $ RPC和放热的：Expandex 5PT。使用了两种不同等级的尼龙，即尼龙6和尼龙共聚物。使用了六种不同的加工条件。已经发现放热的发泡剂，即RMrm Expandexspcircler $ 5PT导致更大的密度降低量，低至50％，但细胞结构较差。而使用吸热发泡剂$ rm Safoamspcircler $ RPC导致密度降低的程度较低（约40％），但细胞结构均匀，细胞较小。观察到，随着密度降低，孔尺寸增大并且耐溶剂（燃料）性降低。尼龙6泡沫比尼龙共聚物泡沫具有更好的耐溶剂性。

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  • 作者

    Khare, Anand Avinash.;

  • 作者单位

    University of Massachusetts Lowell.;

  • 授予单位 University of Massachusetts Lowell.;
  • 学科 Materials science.;Plastics.
  • 学位 M.S.
  • 年度 1996
  • 页码 101 p.
  • 总页数 101
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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