The present invention discloses an impact-resistant modified polypropylene and its preparation method, falling within the field of polypropylene material technology. It comprises polypropylene resin, polyurea elastomer, β-nucleating agent masterbatch, and dispersant. Polypropylene resin and polyurea elastomer are added to a vacuum tank and mixed for 15–20 minutes under ultrasonic agitation and vacuum infusion coupling. then add β-nucleating masterbatch and dispersant, mixing for another 15–20 minutes under ultrasonic agitation and vacuum infusion coupling. Extrude the resulting melt using a twin-screw extruder at 60 rpm, pelletize it, and obtain the impact-modified polypropylene. The combination of polypropylene resin and polyurea elastomer via ultrasonic agitation and vacuum perfusion coupling introduces flexible molecular segments into the melt, enhancing polypropylene'A sua estabilidade térmica e resistência ao impacto permitem que esses segmentos flexíveis impeçam parcialmente a disposição cristalina das moléculas de polipropileno, aumentando, assim, o conteúdo de cristais β.
Código do país: CN
Número de aplicação: CN202211698245.7
