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资助维基百科 外观 创建账号 登录 个人工具 创建账号Melting strategy of polypropylene might be attained via extrusion and molding. Popular extrusion strategies consist of manufacture of soften-blown and spun-bond fibers to variety extended rolls for upcoming conversion into a wide range of beneficial products and solutions, such

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By clicking “Settle for All Cookies”, you comply with the storing of cookies on the gadget to boost web-site navigation, review site use, and guide within our advertising efforts.Isotactic & atactic polypropylene is soluble in p-xylene at 140 °C. Isotactic precipitates when the solution is cooled to 25 °C and atactic portion remains soluble

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