Rheological Studies on Polymer Processings

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  • 高分子成形加工のレオロジー
  • コウブンシ セイケイ カコウ ノ レオロジー

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Abstract

It is necessary to consider both the processing property and the product property as the quality of plastics. The product properties are determined by the primary structures of resin and the higher-order structures of product which are produced as a result of processing, and it is important to clarify the relationships among the primary structures of resin, the processing conditions, the higher-order structures of the product and the product properties. The processing properties contain two aspects, the behavior of resin in processing and its influence on the higher-order structures of product. The processing properties are determined by the primary structures of resin and the processing conditions, and are related with the rheological and thermal properties of resin.<BR>This paper takes the injection-molding of polypropylenes as an example of polymer processings, and treats structure-property relationships and an analysis of molecular orientation process based on the rheological and thermal properties, namely the influence of the processing behavior on a higher-order structure of product.

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