A fiber-modified polypropylene material and a method for producing the same

By employing a special processing technique involving helical polyvinyl alcohol fibers and polypropylene materials, a helical structure fiber-modified polypropylene material is formed, which solves the warping problem of fiber-modified polypropylene materials, improves the strength and impact resistance of the material, and expands its application range.

CN122103745APending Publication Date: 2026-05-29HEFEI GENIUS NEW MATERIALS CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HEFEI GENIUS NEW MATERIALS CO LTD
Filing Date
2024-11-29
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Fiber-modified polypropylene materials are prone to warping in complex structures or thin parts, resulting in a large difference in shrinkage rates in the transverse and longitudinal directions, which limits their application areas.

Method used

Helical polyvinyl alcohol fibers and polypropylene materials are melted, extruded, and granulated in a twin-screw extruder to form a helical fiber-modified polypropylene material. The shrinkage difference is reduced by the entanglement of the helical fibers with the substrate.

Benefits of technology

It significantly improves material strength and impact resistance, reduces the risk of component warping, and enhances the consistency of material shrinkage in both the transverse and longitudinal directions.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure BDA0005162638890000061
    Figure BDA0005162638890000061
Patent Text Reader

Abstract

The application discloses a fiber modified polypropylene material and a preparation method thereof. The fiber modified polypropylene material is prepared from 58.8-88.6 parts of polypropylene, 10-35 parts of polyvinyl alcohol fiber, 1-5 parts of maleic anhydride grafted polypropylene, 0.2-0.6 parts of an antioxidant and 0.2-0.6 parts of a light stabilizer according to weight parts. The polyvinyl alcohol fiber is a spiral polyvinyl alcohol fiber, which is prepared by a chemical synthesis method, and then is subjected to a series of tension and rotation through a special processing technology while being stretched, so that the spiral shape is obtained. The spiral fiber is wound with the base polymer during the processing and injection molding, the spiral structure state is maintained, the difference between the transverse and longitudinal shrinkage rates of the material is reduced, and the problem of poor warping of the product is improved.
Need to check novelty before this filing date? Find Prior Art