High temperature resistant P.T.F.E. coated filter material

Abstract

The invention relates to a high temperature-resistant polytetrafluoroethylene tectorial filter material, belonging to the improvement on present polytetrafluoroethylene composite filter material, which comprises a glass fiber base cloth and a polytetrafluoroethylene surface film. It is characterized in that: first using after-treatment agent to process the dipping process on the glass fiber base cloth, then processing the high-temperature heat compression on the polytetrafluoroethylene surface film. The invention uses film forming emulsifier, fluorine silane coupling agent and fluoroplymer emulsion to form a film on the glass fiber base cloth, which can improve the effects of anti-soil, oil-proof and preservation, and it can have fusion combination with expanded micro-pore polytetrafluoroethylene film in the condition of high-temperature heat compression, to effectively solve the problem of hard fusion combination between inorganic material of glass fiber and organic inertia material of polytetrafluoroethylene to significantly improve the fastness between them.

Description

technical field

[0001] The invention relates to a high-temperature-resistant polytetrafluoroethylene-coated filter material, which relates to the improvement of the existing polytetrafluoroethylene-coated filter material. Background technique

[0002] Glass fiber cloth and polymer polytetrafluoroethylene film composite filter material is a new type of filter material developed in recent years. It gives full play to the respective properties of inorganic materials (glass fiber) and organic materials (polytetrafluoroethylene). Advantages, make up for each other's deficiencies, synergies have produced a very good comprehensive effect.

[0003] The Chinese patent (Application No. 03129430.8) titled "Filtration Material of Polytetrafluoroethylene (PTFE) Composite Membrane" discloses a filter material of polytetrafluoroethylene composite membrane used in the air filtration industry, which is made of glass fiber, poly Two materials of tetrafluoroethylene are compounded, in which g...