高分子成形加工のレオロジー

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  • Rheological Studies on Polymer Processings
  • コウブンシ セイケイ カコウ ノ レオロジー

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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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