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High-performance PTFE (Polytetrafluoroethylene) needled felt filter material and preparation process thereof

A PTFE and needle-punched felt technology, applied in the fields of filtration and separation, non-woven fabrics, layered products, etc., can solve the problems of affecting the filtration and cleaning effect, large loss of filter material strength, shortened service life, etc., to reduce dust accumulation, High filtration precision and good dimensional stability

Active Publication Date: 2015-03-25
辽宁新洪源环保材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Long-term use of ordinary PTFE needle-punched felt will cause dust accumulation inside the filter material, block the filter material, affect the effect of filtering and dust removal, and increase the system resistance; Large loss of material strength
The above factors will lead to the failure of the filter material and shorten the service life.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • High-performance PTFE (Polytetrafluoroethylene) needled felt filter material and preparation process thereof
  • High-performance PTFE (Polytetrafluoroethylene) needled felt filter material and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0028] The filter material includes a fine denier PTFE fiber mesh layer 1, a first base fabric layer 2, an upper PTFE fiber mesh layer 3, a second base fabric layer 4, and a lower PTFE fiber mesh layer 5.

[0029] The preparation process is:

[0030] 1. Production of fine denier PTFE fiber mesh layer and first base cloth layer

[0031] It is completed by the conventional carding and needle punching process, namely: pre-treating the fine denier PTFE fiber → pre-opening → main opening → uniform mixing → feeding → carding into a net → single-sided netting → pre-needling → winding →Inspection and other processes.

[0032] (1) Pretreatment: Spread the fine denier PTFE fiber evenly after loosening it, spraying it with a 1% antistatic agent aqueous solution, leaving it for 12 hours, and then using it; using antistatic agent surface treatment technology to improve its fluffiness to facilitate the next The process is processed, and at the same time, the cohesion between the fibers after formi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention provides a high-performance PTFE (Polytetrafluoroethylene) needled felt filter material and a preparation process thereof. The filter material sequentially comprises a fine denier PTFE fiber mesh layer, a first base fabric layer, an upper PTFE fiber mesh layer, a second base fabric layer and a lower PTFE fiber mesh layer; the fine denier PTFE fiber mesh layer is made by pre-treating, pre-opening and carding a fine denier PTFE fiber, the first base fabric layer and the second base fabric layer are made by pre-treating PTFE base fabrics, and the upper PTFE fiber mesh layer and the lower PTFE fiber mesh layer are made by pre-treating, pre-opening and carding common PTFE fibers. The filter material provided by the invention is stable in structure, high in filter precision and strength, and good in heat resistance and corrosion resistance, and is used for filtering smoke and collecting products under various complex working conditions.

Description

Technical field [0001] The invention relates to the field of environmental protection dust removal filter materials, in particular to a high-performance PTFE needle felt filter material with high filtration precision and good filtration performance and a preparation process thereof. Background technique [0002] PTFE needle-punched felt is a kind of filter material with reasonable structure and good performance. It uses PTFE short fibers and base fabric as raw materials. The carded PTFE short fibers are needle-punched by a needle machine, and the felt layer of PTFE fibers is mechanically made. Between the felt layer PTFE fiber and the reinforced PTFE base cloth, the fibers are entangled with each other, and the PTFE fiber mesh is reinforced to make a felt-like non-woven filter material. It not only has the inherent advantages of PTFE fiber material, but also the felt layer PTFE fiber is a single fiber, a non-directional three-dimensional microporous structure, high porosity, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/02B32B27/12D04H13/00B01D39/16
Inventor 李刚
Owner 辽宁新洪源环保材料有限公司
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