A method for preparing an electromagnetic shielding polyurethane foam

By combining waste plastic track powder with conductive carbon black, an electromagnetic shielding polyurethane foam material was prepared, which solved the problem of difficult disposal of waste plastic tracks, realized high-value utilization and simplified the preparation process, and improved the electromagnetic shielding performance of the material.

CN122213489APending Publication Date: 2026-06-16HEFEI UNIV OF TECH +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-25
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

Discarded plastic running tracks are difficult to dispose of. Traditional disposal methods lead to land occupation and environmental pollution. The existing electromagnetic shielding polyurethane foam material has a complex preparation process and is difficult to operate.

Method used

Electromagnetic shielding polyurethane foam material is prepared by combining waste plastic track powder with conductive carbon black. Through crushing, flotation, ball milling and mixing processes, carbon black is embedded on the surface of waste plastic track particles to prepare polyurethane foam material with electromagnetic shielding properties.

Benefits of technology

This approach enables the high-value utilization of discarded plastic running tracks, simplifies the preparation process, enhances the electromagnetic shielding performance and usability of polyurethane foam materials, and reduces environmental pollution.

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Abstract

The application discloses a preparation method of electromagnetic shielding polyurethane foaming material and belongs to the technical field of solid waste resource recycling and regeneration. The abandoned runway powder is used as a filler, combined with conductive carbon black, and used in polyurethane foaming material to endow the polyurethane foaming material with electromagnetic shielding performance. On one hand, the abandoned plastic runway is difficult to handle, and on the other hand, the polyurethane foaming material with electromagnetic shielding performance is prepared, and the use value of the polyurethane foaming material is improved.
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Citation Information

Patent Citations

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