The invention discloses a hydrophilic syndiotactic polypropylene composite material with high crystallization temperature and its preparation method. The composite comprises 85~98 parts by weight of syndiotactic polypropylene, 2~8 parts of polyvinylidene fluoride, 0~5 parts of polyethylene and 0~8 parts of polyvinyl alcohol. All components are pre-mixed by a high-speed mixer and melt-compounded and pelletized by a twin-screw extruder. Polyvinylidene fluoride serves as an efficient nucleating agent to induce ordered folding and crystallization of syndiotactic polypropylene molecular chains and improve crystallization performance, while enhancing hydrophilicity. Combined with polyethylene and polyvinyl alcohol, the composite achieves greatly improved crystallization behavior and excellent hydrophilic properties. This invention provides a novel nucleating agent option for syndiotactic polypropylene and expands its application range through optimized surface performance.
Area Code: CN
Application Number: CN202411709736.6
