3D printing forming porous polymer material as well as preparation method and application thereof

By using 3D printing technology and underwater pelletizing to prepare porous polymer materials, the problem of poor pore size and porosity adjustment has been solved, and high-quality porous polymer materials have been prepared, which are suitable for artificial bone materials, lip gloss pen tip rods and wearable electronic devices.

CN121043401APending Publication Date: 2025-12-02HEFEI GENIUS NEW MATERIALS CO LTD
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Patent Information

Application Number
CN202410679957.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-05-29
Publication Date
2025-12-02

AI Technical Summary

Technical Problem

Existing porous polymer materials have poor adjustability in pore size, porosity and pore size distribution, which cannot meet the complex requirements of many industries, and traditional preparation methods are not suitable for large-scale mass production.

Method used

Porous polymer materials are prepared by combining 3D printing technology with a piezoelectric jet dispensing valve and an underwater pelletizing method with a special die design. By controlling the mixing of thermoplastic polymer and antioxidant and the steps of extrusion, melting, and underwater pelletizing, a powder material with uniform particle size is obtained for 3D printing molding.

Benefits of technology

It improves the adjustability of pore size and porosity of porous polymer materials, reduces product surface roughness, avoids uneven deformation and cracking of melt, and is suitable for application scenarios in multiple industries.

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Abstract

The invention discloses a preparation method of a 3D printing molded porous polymer material, which comprises the following steps: S1, fully mixing a thermoplastic polymer with an antioxidant, extruding, melting, carrying out underwater pelletizing, cooling, dehydrating, and screening to obtain thermoplastic polymer powder with uniform particle size distribution; and S2, putting the thermoplastic polymer powder into a 3D printer, carrying out printing forming by adopting a piezoelectric jet dispensing valve, and cooling to obtain the porous polymer material. The sphericity degree of the obtained polymer powder is high, and the surface roughness of a prepared product is lower than that of a 3D printing product of powder prepared through traditional mechanical grinding powder or common die hole underwater pelletizing.
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Citation Information

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