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Production technology of high-temperature-resistant blending filter materials

A production process, high temperature resistant technology, applied in filtration separation, dispersed particle filtration, dispersed particle separation and other directions, it can solve the problem of the quality decline of the filter material, and achieve the effect of excellent performance

Inactive Publication Date: 2017-01-04
TIANDINGFENG NONWOVENS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a production process of high temperature resistant blended filter material to solve technical problems such as filter material quality degradation in the prior art

Method used

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  • Production technology of high-temperature-resistant blending filter materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] First mix PTFE with aramid, and then mix with P84, the ratio is P84 (50%), PTFE (20%), aramid (30%), through the DILO pre-spinning production line (including unpacking, pre-opening, large warehouse Cotton blending, fine opening, cotton feeding box, carding machine, web lapper, pre-needling machine, main needling machine, trimming needling) to produce cloth; then through singeing and calendering, this embodiment adopts singeing The calender is a three-roll singeing calender, the temperature of the three rolls (upper, middle and lower) is set at 150°C, 150°C, and 80°C, the speed is 16m / min, the pressure is 0.8MPa, and the singeing burner is High temperature burner, burner flow rate is 3.0Kpa, about 20min for one roll of filter material singeing.

[0017] Stenter setting, PTFE impregnation and heat drying, these three steps are in one production line, the equipment from front to back is stenter setting machine-chemical liquid tank-vertical drying machine, stenter setting c...

Embodiment 2

[0020] First mix PTFE with aramid, and then mix with P84, the ratio is P84 (50%), PTFE (25%), aramid (25%), through the DILO pre-spinning production line (including unpacking, pre-opening, large warehouse Cotton blending, fine opening, cotton feeding box, carding machine, web lapper, pre-needling machine, main needling machine, trimming needling) to produce cloth; then through singeing and calendering, this embodiment adopts singeing The calender is a three-roll singeing calender, the temperature of the three rolls (upper, middle and lower) is set at 150°C, 150°C, and 80°C, the speed is 16m / min, the pressure is 0.8MPa, and the singeing burner is High temperature burner, burner flow rate is 3.0Kpa, about 20min for one roll of filter material singeing.

[0021] Stenter setting, PTFE impregnation and heat drying, these three steps are in one production line, the equipment from front to back is stenter setting machine-chemical liquid tank-vertical drying machine, stenter setting c...

Embodiment 3

[0024] First mix PTFE with aramid, and then mix with P84, the ratio is P84 (50%), PTFE (35%), aramid (15%), through the DILO pre-spinning production line (including unpacking, pre-opening, large warehouse Cotton blending, fine opening, cotton feeding box, carding machine, web lapper, pre-needling machine, main needling machine, trimming needling) to produce cloth; then through singeing and calendering, this embodiment adopts singeing The calender is a three-roll singeing calender, the temperature of the three rolls (upper, middle and lower) is set at 150°C, 150°C, and 80°C, the speed is 16m / min, the pressure is 0.8MPa, and the singeing burner is High temperature burner, burner flow rate is 3.0Kpa, about 20min for one roll of filter material singeing.

[0025] Stenter setting, PTFE impregnation and heat drying, these three steps are in one production line, the equipment from front to back is stenter setting machine-chemical liquid tank-vertical drying machine, stenter setting c...

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Abstract

The invention relates to the technical field of atmospheric dust removal high-temperature filter materials used for industry, in particular to a production technology of high-temperature-resistant blending filter materials. The technology comprises the following steps: blending polyimide fibers, polytetrafluoroethylene fibers and aramid fibers, wherein the proportions of the polyimide fibers, the polytetrafluoroethylene fibers and the aramid fibers are respectively 50%, 20-45% and 5-30%; adopting a DILO acupuncture production line to produce the three fibers into cloth; successively carrying out working procedures including genapping, calendaring, tentering, sizing, PTFE (Polytetrafluoroethylene) dipping and hot drying to finally obtain the filter materials. Three types of fibers are blended, an excellent proportion is selected, the imported DILO acupuncture production line and a normative post processing working procedure are adopted, so that the performance of the produced filter materials is better, and the problems of short service life, poor acid and alkali resistance and corrosion resistance, low use temperature, poor filtering accuracy and difficulty in adapting to increasingly severe smoke environment of the traditional filter materials are solved.

Description

technical field [0001] The invention relates to the technical field of high-temperature filter material for atmospheric dust removal for industrial use, in particular to a production process of a high-temperature-resistant blended filter material. Background technique [0002] Most of the high-temperature filter materials at this stage are blended with two kinds of fibers, mixing two kinds of high-temperature-resistant fibers (mainly low-cost fibers), and then passing needle-punched threads (usually domestic threads, domestic needle-punched threads) The gap with the international market is narrowing, so it is popular in China) production, and finally the filter material will be produced after a simple finishing process. This kind of process is simple, convenient and fast, and the general filter material manufacturers are not willing to spend a lot of energy on research and development, so the homogeneity in the market is serious. Although the cost of the filter material pro...

Claims

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Application Information

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IPC IPC(8): B01D39/08B01D46/02
CPCB01D39/083B01D46/02
Inventor 蒋启明镇垒刘威理
Owner TIANDINGFENG NONWOVENS CO LTD
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