Recently, Changchun Applied Chemistry of the Chinese Academy of Sciences has made breakthroughs in the key technology research of Polypropylene Special Materials (BOPP), solved the problem of “film ruptureâ€, and reduced China’s dependence on imported BOPP film. The researcher designed the chain structure of isotactic polypropylene to achieve high-speed biaxially stable stretching, followed by the presence of high molecular weight components, the distribution of control isotacticity, isotacticity of low molecular weight components, and high molecular weight components. A major breakthrough was made in the study of isotacticity. After domestic enterprises adopted this research result, the production speed of stretched BOPP film was increased from 170 to 180 m/min to 380 m/min, which exceeded the average level in foreign countries. (ç‰Ÿç« ç« ) Information Source: Plastic
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