A pickball rotational molding polyethylene composite material and its preparation method

CN122127683APending Publication Date: 2026-06-02DONGGUAN PINGKE SPORTS PRODUCTS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DONGGUAN PINGKE SPORTS PRODUCTS CO LTD
Filing Date
2026-04-17
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing pickball materials have shortcomings in terms of molding precision and service life, and their hitting performance is unstable, failing to meet the needs of frequent hitting and long-term outdoor use.

Method used

High-performance composite materials are prepared by using a specific ratio of high-density polyethylene, linear low-density polyethylene and plasticized ultra-high molecular weight polyethylene as base resins, combined with surface-modified nano-haloite, polydopamine-coated calcium sulfate whiskers and core-shell structure impact modifiers, along with a composite weather-resistant stabilizing system and processing rheology modifiers, through twin-screw extrusion and rotational molding processes.

Benefits of technology

The material exhibits high rigidity, excellent impact toughness, outstanding weather resistance, and good formability, improving the molding precision and service life of peak balls and ensuring stability and performance for long-term outdoor use.

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Abstract

This invention relates to the field of polyethylene composite materials technology, and more particularly to a pickball rotational molding polyethylene composite material and its preparation method. The technical solution comprises the following raw materials: a base resin system, a composite reinforcement system, a core-shell structure impact modifier, a composite weather-resistant stabilizing system, a processing rheology modifier, and auxiliary functional agents. This invention combines high-density polyethylene, linear low-density polyethylene, and a uniquely plasticized ultra-high molecular weight polyethylene in specific ratios, and coordinates them with a surface-modified nano-halostone, a polydopamine-coated calcium sulfate whisker reinforcement system, a core-shell structure impact modifier, and a multi-component weather-resistant stabilizing system. Furthermore, it utilizes a dedicated processing rheology modifier and a precise twin-screw extrusion process to prepare a high-performance pickball-specific material that possesses excellent rigidity, superior impact toughness, outstanding weather resistance and aging resistance, and good processability.
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