Heat-resistant composite glass fiber filter material and preparation method thereof

A technology of high temperature resistance and glass fiber, which is applied in the field of environmental protection filter materials and its preparation, can solve the problems of short service life, poor folding resistance and wear resistance of glass fiber, and large dust suction air volume.

Active Publication Date: 2010-11-10
昆山万瑞达工业纺织品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in cement, power plants, steel and other working conditions, most of the high-temperature-resistant filter and dust-removing bags are woven with a single glass fiber yarn. There are many defects in the use of this single-material filter cloth. : First, due to the poor folding resistance and wear resistance of glass fiber, the high temperature resistance is average, and the service life is short when working in an environment of 150-300 °C
During the unmerging process, the twisted warp and weft yarns of the fiber bundles are very dense, and the airflow can hardly pass through the inside of the twisted ply yarns, and can only pass through the holes where the warp and weft yarns interweave. In order to ensure a certain air permeability of the fabric, the holes of the ply yarns are generally smaller Large, even if the formed powder layer is filtered, the filtration speed should not be too high, otherwise it is easy to permeate, so the filtration effect is not ideal
The third is that the temperature, humidity, dust concentration, chemical composition and particle size distribution of the flue gas dust generated by different dust raising points, and the composition and content of harmful gases in the flue gas are all different. Filter cloth, it is difficult to effectively filter the smoke and dust
For example: the cement shaft kiln has a large dust suction volume, a large moisture content in the flue gas, a high dust concentration, and a large temperature change. A single glass fiber filter cloth can no longer meet the filtration requirements of similar working conditions.

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 1. Use glass fiber to draw 26tex raw silk, and carry out soaking emulsion treatment at the same time. The emulsion contains 15wt% polytetrafluoroethylene, which is directly processed by raw silk, and then spun into 156tex warp yarn through desolation and twisting processes.

[0017] 2. The finished warp yarn is warped, and the heddle is pulled out to make a warp beam.

[0018] 3. The weft yarn is made of glass fiber drawn into 26tex raw silk, which is spun into 104tex yarn through the process of unwinding and twisting, and then processed in bulking process, and then twisted with 104tex glass fiber yarn without bulking treatment. Finally, a weft yarn of 208tex is made.

[0019] 4. Use an air-jet loom to weave a 630g / m2 glass fiber bulked cloth with a double weaving process of 3 / 5 latitude.

[0020] 5. After the post-finishing process, the PTFE mixture is then impregnated, dried and shaped. The proportioning of described polytetrafluoroethylene mixed solution is as foll...

Embodiment 2

[0024] 1. Glass fibers are drawn into 26tex precursors, and treated with soaking emulsion. The emulsion contains 18wt% polytetrafluoroethylene. The precursors are directly processed, and then spun into 104tex warp yarns through desolation and twisting processes.

[0025] 2. The finished warp yarn is warped, and the heddle is pulled out to make a warp beam.

[0026] 3. The weft yarn is drawn from glass fiber and made into 26tex raw silk, which is spun into 130tex yarn through the process of retreating and twisting, and is processed into 130tex weft yarn after the bulking process.

[0027] 4. Use an air-jet loom to weave a 340g / m2 glass fiber bulked cloth using a 1 / 3 twill weaving process.

[0028] 5. After the post-finishing process, the PTFE mixture is then impregnated, dried and shaped. The proportioning of described polytetrafluoroethylene mixed solution is as follows:

[0029] Reagent name

[0030] 6. The surface of the treated glass fiber expanded cloth is cove...

Embodiment 3

[0032] 1. Glass fibers are drawn into 34tex precursors, and treated with soaking emulsion. The emulsion contains 30wt% polytetrafluoroethylene, and the precursors are directly processed, and then spun into 136tex warp yarns through desolation and twisting processes.

[0033] 2. The finished warp yarn is warped, and the heddle is pulled out to make a warp beam.

[0034] 3. The weft yarn is made of glass fiber drawn into 34tex raw silk, which is spun into 136tex yarn through the process of unwinding and twisting, and then processed in bulking process, and then twisted with 68tex glass fiber yarn without bulking treatment. Finally, a weft yarn of 204tex is made.

[0035] 4. Use an air-jet loom to weave a 430g / m2 glass fiber bulked cloth using a 1 / 3 weft double weaving process.

[0036] 5. After the post-finishing process, the PTFE mixture is then impregnated, dried and shaped. The proportioning of described polytetrafluoroethylene mixed solution is as follows:

[0037] ...

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 aims to provide a heat-resistant composite glass fiber filter material and a preparation method thereof. The filter material has the characteristics of good filtering effect, good heat resistance, low production cost and long service life, and can meet the filtering requirements of cement kiln tails and similar working conditions. The technical scheme adopted by the preparation method of the heat-resistant composite glass fiber filter material in the invention is as follows: adopting glass fibers to prepare warps and wefts and preparing into filter cloth by using the warps and wefts, wherein the warps are obtained by infiltrating the glass fibers with polytetrafluoroethylene infiltration emulsion while the wefts are obtained by expanding.

Description

technical field [0001] The invention relates to an environment-friendly filter material and a preparation method thereof, in particular to a high-temperature resistant composite glass fiber filter material and a preparation method thereof. Background technique [0002] At present, in cement, power plants, steel and other working conditions, most of the high-temperature-resistant filter and dust-removing bags are woven with a single glass fiber yarn. There are many defects in the use of this single-material filter cloth. The first is that due to the poor folding resistance and wear resistance of the glass fiber, the high temperature resistance is general, and the service life is short when working in an environment of 150~300°C. The second is that due to the use of a single glass fiber, the filter cloth is woven into a cloth from rounded and parallel glass fiber strands through processes such as retreat and warping. During the unmerging process, the twisted warp and weft yar...

Claims

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/08
Inventor 宋朋泽
Owner 昆山万瑞达工业纺织品有限公司
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