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High-intensity low-stretchability polysulfonamide high-temperature-resisting membrane filter material and preparation method thereof

A technology of film-coated filter material and polysulfone fiber, which is applied in the field of high-strength and low-elongation polysulfone fiber high-temperature-resistant film-coated filter material and its preparation, can solve the problems of low filtration accuracy, poor corrosion resistance, and large elongation, and achieve High filtration efficiency, strong corrosion resistance, smooth surface effect

Active Publication Date: 2013-06-26
NANJING FIBERGLASS RES & DESIGN INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a high-strength and low-elongation polysulfone fiber high-temperature-resistant film-coated filter material and its preparation method to solve the problems of low strength, large elongation, and poor filtration accuracy in existing polysulfone fiber filter materials in actual use. High, poor corrosion resistance and other issues

Method used

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  • High-intensity low-stretchability polysulfonamide high-temperature-resisting membrane filter material and preparation method thereof
  • High-intensity low-stretchability polysulfonamide high-temperature-resisting membrane filter material and preparation method thereof
  • High-intensity low-stretchability polysulfonamide high-temperature-resisting membrane filter material and preparation method thereof

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Embodiment 1

[0031] 1) Selection and preparation of raw materials

[0032] Select sulfonamide fibers with a fineness of 2.0D and 2.8D, both of which have a length of 60 mm; the two fibers are evenly mixed, and the mass ratio of the sulfone fibers with a fineness of 2.0D is: 38% to 50%, and the remaining The weight is 2.8D sulfonamide fiber; the base fabric is glass fiber base fabric, and the weight is 420gsm.

[0033] 2) Temperature and humidity control in the fiber processing area

[0034] The entire production workshop is sealed with a glass cover to effectively prevent the adverse effects of the external climate and the airflow in the processing place. Air conditioning equipment, humidification and dehumidification equipment are installed in the workshop; the temperature of the carding and cross-laying areas is controlled at 20-35 ℃ , the relative humidity is controlled at 50% to 75%.

[0035] 3) Carding and cross-lapping

[0036] The evenly mixed sulfonamide fiber layer is fed into ...

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Abstract

The invention provides a high-intensity low-stretchability polysulfonamide high-temperature-resisting membrane filter material and a preparation method thereof. The filter material disclosed by the invention is formed by compounding a PTFE (Polytetrafluoroethylene) high-compactness microporous membrane layer and a punched felt in sequence from top to bottom. The punched felt is formed by compounding a first polysulfonamide fiber surface layer, a high-intensity low-stretchability base cloth layer and a second polysulfonamide fiber surface layer in sequence from top to bottom. The preparation method comprises steps of: preparation of the punched felt, high-temperature thermoforming, singeing and pressing treatment, full-saturation immersion treatment, predrying, baking curing, and high-temperature high-pressure coating with the PTFE high-compactness microporous membrane. The high-intensity low-stretchability polysulfonamide high-temperature-resisting membrane filter material has high intensity and low stretchability, longitude and latitude strengths are both larger than 3000N / 50mm; the longitude and latitude elongations at break are both smaller than 10%; and the filter material can resist a high temperature grade of 250 DEG C and has high corrosion resistance, good oxidization resistance, smooth surface, high deashing efficiency and wide application range.

Description

technical field [0001] The invention relates to a high-strength and low-elongation polysulfone fiber high-temperature-resistant film-coated filter material and a preparation method thereof, belonging to the field of filter materials. Background technique [0002] At present, among the organic synthetic fibers used in the production of high-temperature-resistant smoke and dust filter materials, polysulfone fibers are one of the few domestic synthetic fibers that can withstand temperatures above 200°C and have independent intellectual property rights. [0003] So far, some scientific research institutes and a few enterprises have done a lot of research on the performance improvement of polysulfone fibers in bag filter materials through industry-university-research channels. Most of the filter materials are polysulfone fibers and other high-temperature-resistant fibers. Blended filter materials are mainly used, and the research focus is mainly on the stability analysis of sulfo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/14B32B27/02B32B27/12B32B27/34D06M15/256D06M15/263D06M15/643D06M101/36
Inventor 杨占元项朝卫费传军章君荣周诚宛晨寅邓志刚
Owner NANJING FIBERGLASS RES & DESIGN INST CO LTD
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