Polytetrafluoroethylene sheet process

Abstract

The invention discloses a polytetrafluoroethylene sheet process which comprises the following steps: step A, preparing materials: selecting polyaddition resin, polyetheretherketone powder, polytetrafluoroethylene resin, a flame retardant, composite polyol, modified graphene and a polypropylene nucleating agent; step B, drying, crushing and screening: sequentially placing the raw materials in stepA in a dryer for drying, a crusher for crushing and a screening machine for screening; and step C, mixing with a twin-screw extruder: adding the screened qualified raw materails into the twin-screw extruder for mixing. A polytetrafluoroethylene sheet prepared in the invention is composed of the polyaddition resin, the polyetheretherketone powder, the polytetrafluoroethylene resin, the flame retardant, the composite polyol, the modified graphene and the polypropylene nucleating agent; and the polytetrafluoroethylene sheet process can effectively improve high-low temperature resistance, corrosion resistance and fire resistance of the tetrafluoroethylene sheet, can be adopted to enable production of the polytetrafluoroethylene sheet to be coherent without a phenomenon of waiting for the nextprocess, and effectively improves the production efficiency of the polytetrafluoroethylene sheet.

Description

technical field [0001] The invention relates to the technical field of polytetrafluoroethylene boards, in particular to a technology for polytetrafluoroethylene boards. Background technique [0002] PTFE board (also called PTFE board, Teflon board, Teflon board) is divided into two types: molding and turning. The molded board is formed by molding PTFE resin at room temperature, and then sintered, It is made by cooling, and the PTFE turning board is made of PTFE resin through pressing, sintering, and rotary cutting. ), corrosion resistance (strong acid, strong alkali, aqua regia, etc.), weather resistance, high insulation, high lubrication, non-adhesion, non-toxic and other excellent characteristics, but the existing PTFE boards have complex production processes and production The overall strength of the produced PTFE sheet is poor, which affects its quality. Therefore, we propose a PTFE sheet process. Contents of the invention [0003] The object of the present invention...

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Problems solved by technology

[0002] PTFE board (also called PTFE board, Teflon board, Teflon board) is divided into two types: molding and turning. The molded board is formed by molding PTFE resin at room temperature, and then sintered, It is made by cooling, and the PTFE turning board is made of PTFE resin through pressing, sintering, and rotary cutting. ), corrosion resistance (strong acid, strong alkali, aqua regia, etc.), weather resistance, high insulation, high lubrication, non-adhesion, non-toxic and other excellent characteristics, but the existing PTFE boards have complex production processes and production The overall strength of the produced PTFE plate is poor, which affects its quality. Therefore, we propose a PTFE plate process

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