Multi-scale fiber composite high temperature gas filter material and preparation method thereof

A high-temperature gas filtration and fiber composite technology, applied in the direction of filtration separation, separation methods, chemical instruments and methods, etc., can solve the problems of poor mechanical properties and poor filtration performance, and achieve improved mechanical properties, less energy loss, and improved interception effect Effect

Inactive Publication Date: 2018-05-04
李竑靓
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a multi-scale fiber composite high-temperature gas filter m

Method used

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  • Multi-scale fiber composite high temperature gas filter material and preparation method thereof

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Example Embodiment

[0025] Example 1

[0026] Take the polyphenylene sulfide powder into a vacuum drying oven and dry it to constant weight at 105°C, then take 80g of the dried polyphenylene sulfide powder, 1.6g basalt fiber, 0.4g silane coupling agent KH-550, and add In a twin-screw extruder, the masterbatch was obtained by melt-kneading, extruding and granulating at 280°C, and then the masterbatch was charged into the spinning machine to be melted and drawn to obtain modified polyphenylene sulfide fiber yarn. Take 12g of titanate Add butyl ester to 80g of 10% acetylacetone-ethanol mixture, stir at 300r / min for 30min, then add 20g of absolute ethanol, 4g of 10% hydrochloric acid, 0.8g of copper sulfate pentahydrate powder, 1.6g of boric acid For the powder, continue to stir for 1 hour to obtain a mixed solution. Take 40g of alkali-free glass fiber and soak in the mixed solution for 1 hour. Take out the soaked fiber and place it in a drying box, dry it at 105℃ to constant weight, and then transfer i...

Example Embodiment

[0027] Example 2

[0028] Take the polyphenylene sulfide powder into a vacuum drying oven and dry it to constant weight at 107°C, then take 90g of dried polyphenylene sulfide powder, 1.8g basalt fiber, 0.45g silane coupling agent KH-550, and add In the twin-screw extruder, the masterbatch was obtained by melt-mixing, extruding and granulating at 300℃, and then the masterbatch was put into the spinning machine to melt and draw to obtain the modified polyphenylene sulfide fiber yarn. Take 14g titanate four Add butyl ester to 90g of 10% acetylacetone-ethanol mixture, stir at 350r / min for 35min, then add 23g of absolute ethanol, 5g of 10% hydrochloric acid, 0.9g of copper sulfate pentahydrate powder, 1.8g of boric acid For the powder, continue to stir for 1 hour to obtain a mixed solution. Take 45g of alkali-free glass fiber and soak in the mixed solution for 1 hour. Take out the soaked fiber and place it in a drying box, dry it at 107°C to constant weight, and then transfer it to 52...

Example Embodiment

[0029] Example 3

[0030] Take the polyphenylene sulfide powder into a vacuum drying oven and dry it to constant weight at 110°C, then take 100g of the dried polyphenylene sulfide powder, 2.0g basalt fiber, 0.5g silane coupling agent KH-550, and add In a twin-screw extruder, melt, knead, extrude and pelletize to obtain a masterbatch at 320°C, and then put the masterbatch into the spinning machine to melt and draw to obtain modified polyphenylene sulfide fiber filaments. Take 15g of titanate Add butyl ester to 100g of 10% acetylacetone-ethanol mixture, stir at 400r / min for 40min, then add 25g of absolute ethanol, 5g of 10% hydrochloric acid, 1.0g of copper sulfate pentahydrate powder, 2.0g of boric acid For the powder, continue to stir for 2 hours to obtain a mixed solution. Take 50g of alkali-free glass fiber and soak in the mixed solution for 2 hours. Take out the soaked fiber and place it in a drying box, dry it at 110°C to constant weight, and then transfer it to 550°C. In th...

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Abstract

The invention relates to a multi-scale fiber composite high temperature gas filter material and a preparation method thereof, belonging to the technical field of filter materials. The average pore size and porosity of the filter material are significantly reduced by forming a composite structure of crude fibers, ordinary fibers and fine fiber branches in the filter material, and the segmenting effect of the fine branches greatly increases the branch number and circuitous degree of an air flow channel, so that the interception effect and inertia effect of the filter material are improved, and the filter material is enabled to obtain high efficiency and low resistance ideal filtering performance. According to the preparation method, an ultrasonic wave bonding technology is used for bonding aneedled felt and a composite glass fiber mesh, the ultrasonic energy is directly transmitted into the fiber mesh, the energy loss is less, the bonding point position and the bonding area can be designed arbitrarily, and holes similar to needling bonding and spunlace bonding are not generated; furthermore, the needled felt is closely combined with the composite glass fiber mesh; therefore, the mechanical properties of composite material are effectively improved, and the composite material has a good application prospect.

Description

technical field [0001] The invention relates to a multi-scale fiber composite high-temperature gas filter material and a preparation method thereof, belonging to the technical field of filter materials. Background technique [0002] In recent years, a large amount of high-temperature industrial waste gas has caused serious pollution of the atmospheric environment. Topics such as "smog" and "PM2.5" have rapidly heated up around the world and have become hot issues. Therefore, it is extremely important to develop and optimize high temperature dust removal technology. [0003] At present, the high-temperature flue gas emitted by most factories must be cooled first to reduce its temperature to below 250°C, and then filter the fine dust particles in the exhaust gas. But even the exhaust gas that has been cooled down is still a high-temperature flue gas. In order to make the material can directly filter high-temperature exhaust gas, various countries have developed a variety of ...

Claims

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Application Information

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IPC IPC(8): B01D39/14
CPCB01D39/14
Inventor 李竑靓王文新史玉玲
Owner 李竑靓
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