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Preparation method of PTFE base cloth for filter felt

A technology of base cloth and filament, which is applied in the field of preparation of PTFE base cloth for filter felts, can solve the problems of high cost, complicated preparation process, and low production efficiency, and achieve the effects of low cost, simple process, and high production efficiency

Pending Publication Date: 2022-01-25
无锡高强特种纺织有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing preparation process is relatively complicated, the production efficiency is low and the cost is high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] A kind of preparation method of PTFE base cloth for filter felt of the present invention comprises the base cloth body formed by weaving by warp yarn and weft yarn; Described warp yarn and weft yarn all take PTFE filament as raw material; Concrete steps comprise:

[0021] Step 1: Add ammonium perfluorooctanoate, stabilizer and initiator into the reactor with deionized water;

[0022] Step 2: Stir the tetrafluoroethylene monomer into the reaction kettle, and add the initiator several times until the tetrafluoroethylene is fully dispersed and polymerized in deionized water to obtain a tetrafluoroethylene emulsion;

[0023] Step 3: diluting, agglomerating, and drying the tetrafluoroethylene emulsion to obtain polytetrafluoroethylene resin;

[0024] Step 4: Pour the polytetrafluoroethylene resin and aviation kerosene into the mixer, and stir evenly for 50 minutes to obtain primary raw materials;

[0025] Step 5: Dry the primary raw materials, the drying time is ≤7 hours, a...

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Abstract

The invention relates to a preparation method of PTFE base cloth for a filter felt. The PTFE base cloth comprises a base cloth body formed by weaving warp yarns and weft yarns, and the warp yarns and the weft yarns take PTFE filaments as raw materials. The preparation method comprises the following specific steps that tetrafluoroethylene emulsion is prepared, treating is carried out to obtain polytetrafluoroethylene resin, a primary raw material is obtained, pressing and extruding are carried out to obtain primary filaments, deoiling, sintering and secondarily stretching are carried out to obtain secondary filaments, plying and twisting are carried out to obtain PTFE filaments, and the PTFE filaments are warped and woven to obtain the base cloth body. The defects in the prior art are overcome.

Description

technical field [0001] The invention relates to a base cloth, in particular to a method for preparing a PTFE base cloth for a filter felt. Background technique [0002] PTFE base cloth is a braided fabric made of a unique material, which can withstand acid and alkali erosion in the entire pH range under the continuous operating temperature of 240 ° C and the instantaneous temperature of 260 ° C. Such PTFE synthetic fiber filter bags have excellent self-lubricating properties, no moisture absorption and can withstand ultraviolet radiation, and are more suitable for occasions that require harsh conditions that require corrosion resistance and require high service life of the filter material. However, the existing preparation process is relatively complicated, with low production efficiency and high cost. Contents of the invention [0003] The purpose of the invention is to overcome the defects in the prior art and provide a method for preparing a PTFE base cloth for filter ...

Claims

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Application Information

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IPC IPC(8): D03D15/283D03D15/37D01F6/48D01F1/10C08F114/26
CPCD03D15/00D01F6/48D01F1/10C08F114/26D10B2321/042
Inventor 高强高伟良
Owner 无锡高强特种纺织有限公司
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