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nature : Lian-called rolling. Refers to the use of mechanical or chemical means to reduce health plastic viscosity and molecular weight to improve its plasticity, and agreed to appropriate liquidity, thereby satisfying mixing and forming further processing, such as the need to process. Plastic refining process is to make rubber macromolecules strand breaks, molecular weight distribution so absorbed in the process. Lead macromolecules strand breaks are the main factors undermining role of mechanical and thermal oxidative degradation, low-temperature plastic chain is the major factor in the former, high-temperature plastic chain when the latter dominated. According to the nature and rubber products use, using different methods of plastic chain. The method commonly used plastic machinery refining and chemical plastic smelting method two. See the article.
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