A PTFE bearing conveyor belt for graphene film making and its manufacturing process

By using PTFE material with enhanced performance as the bearing substrate of the graphene film, the problem of easy breakage during peeling of the graphene film is solved, stable peeling of the film material and reuse of the bearing tape are achieved, and production costs and working strength are reduced.

CN119736800APending Publication Date: 2025-04-01JIANGSU TAIFULONG TECH
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Patent Information

Application Number
CN202510004034.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-02
Publication Date
2025-04-01

AI Technical Summary

Technical Problem

In the existing graphene film preparation process, the film material is prone to break when peeled off, and the utilization rate of the bearing substrate is low, resulting in high production costs and high working strength.

Method used

Polytetrafluoroethylene (PTFE) material is used as the carrier substrate, and the weather resistance, bending resistance, flexibility, anti-stickness and superhydrophobic properties of PTFE are enhanced by adding softeners and modified PFA, so that the graphene film is easier to peel from the carrier substrate and realize the reuse of the carrier tape.

Benefits of technology

It achieves smooth peeling of graphene film, improves product quality stability, reduces working strength and production costs, and extends the service life of the carrier belt.

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Abstract

The present invention relates to a PTFE bearing conveyor belt for graphene film making and a manufacturing process thereof, comprising the following steps: (1) emulsion preparation; (2) dewaxing of grey cloth; (3) dipping treatment; (4) baking treatment; (5) high temperature sintering. The thickness of the glass fiber grey cloth is 0.25-0.45 mm and the width is 1200-1500 mm; a softener is mixed in the emulsion, and the content is 2%-4%. The conveyor belt is composed of a glass fiber base cloth and a polytetrafluoroethylene coating, the thickness of the conveyor belt is 0.30-0.50 mm, and the length is greater than or equal to 150m; the conveyor belt is set to a jointless belt or connected to form a ring by a joint. The present invention utilizes the characteristics of strong anti-stickiness and low friction coefficient of polytetrafluoroethylene material, and uses the glass fiber cloth with PTFE coating as a bearing conveyor belt, so that the graphene film is easier to peel off from the substrate, solving the problem that the film material of the traditional graphene film making process is easy to break when peeling.
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Citation Information

Patent Citations

  • Mass preparation method of high-performance graphene film, graphene film and antenna

    CN111055552A

  • Preparation method of high-performance low-defect graphene heat dissipation film

    CN113213458A

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