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

A technology of polytetrafluoroethylene and filter materials, which is applied in the field of improvement of existing polytetrafluoroethylene film-coated filter materials, which can solve the problem of dust sticking, loss of filtering effect, and solid compounding of base cloth and surface film of film-coated filter materials Reduce the degree of filtration and other problems, to achieve the effect of low filtration resistance, long service life and beautiful appearance

Active Publication Date: 2006-05-10
中材科技膜材料(山东)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, because the adhesive has melted, the composite firmness between the base cloth of the film-coated filter material and the surface film is reduced, and the dust adhering to the surface film will soon pull the surface film off the base cloth, resulting in a large amount of dust sticking on the surface of the filter bag base cloth, and quickly block the filter bag to make it lose its filtering effect

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0016] The present invention is described in further detail below in conjunction with embodiment.

[0017] 1. Prepare post-treatment agent for fluorine-containing polymers.

[0018] The specific formula of the post-treatment agent of Embodiment 1-22 is shown in Table 1-5. Weigh the material according to the weight percentage, stir it evenly and place it in the soaking tank of the chemical treatment furnace with a width of 2m.

[0019] 2. Use the post-treatment agent prepared in step 1 to post-treat the glass fiber cloth.

[0020] Pass the non-alkali expanded yarn glass fiber cloth through the cloth storage rack, pass through the uniform speed (2m / min) cloth release device to the trapezoidal impregnation tank equipped with post-treatment agent, and enter the hot air oven after impregnating the glass fiber cloth. (Temperature is 220-320 ℃) ​​medium drying treatment, after three times of heat drying, then pass through the constant tension control device, and be wound by the win...

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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...

Claims

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Application Information

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IPC IPC(8): B01D69/12B01D71/36B32B17/10B32B27/12
Inventor 严荣楼梁正海王小兵梁生宪项朝卫时志权陆健宋云鹏张万平徐涛周华刘金芝李淑晶
Owner 中材科技膜材料(山东)有限公司
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