CN104888534A - Glass fiber cloth and macromolecular polytetrafluoroethylene microporous film composite filtering material - Google Patents
Glass fiber cloth and macromolecular polytetrafluoroethylene microporous film composite filtering material Download PDFInfo
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- CN104888534A CN104888534A CN201510257607.2A CN201510257607A CN104888534A CN 104888534 A CN104888534 A CN 104888534A CN 201510257607 A CN201510257607 A CN 201510257607A CN 104888534 A CN104888534 A CN 104888534A
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- glass fiber
- microporous film
- macromolecular
- filtering material
- polytetrafluoroethylene
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Abstract
Disclosed is a glass fiber cloth and macromolecular polytetrafluoroethylene microporous film composite filtering material. The composite filtering material is characterized by covering the surface of glass fiber filtering cloth with a layer of a macromolecular microporous film, wherein a high-temperature-resistance post-treatment layer is arranged between the glass fiber filtering cloth and the macromolecular microporous film. Performance advantages of glass fiber (an inorganic medium) and polytetrafluoroethylene (an organic medium) are fully developed, and deficiencies of glass fiber and polytetrafluoroethylene are remedied by each other. The synergistic effect causes a great combined effect, and particularly requirement of recycling micropowder with a diameter lower than 1 micron can be satisfied. Since the macromolecular microporous film is a biaxial stretched polytetrafluoroethylene microporous film and has a micropore diameter of 0.2-3 Mu, the recycling rate of micropowder with a diameter lower than 1 micron can be improved; the porosity is more than 90%, so that the filtering resistance can be lowered; and the service life of the filtering material can be prolonged by 2-3 times. The filtering material is applicable to recycle high-temperature smoke in industries, such as cement and metallurgy, and an excellent economic benefit and social benefit are created.
Description
Technical field
Membrane-laminated fiberglass filter media, relates to glass fiber filter material field, particularly relates to glass fabric and high molecular weight ptfe Microporous Membrane Composite Filter Material.
Background technology
Glass fiber filter material is high temperature resistant with it, corrosion resistance is strong, good stability of the dimension and be widely used in high-temperature-resistant filtering material field.Especially favored very much in the off-gas recovery of the industry high-temperature fields such as cement, metallurgy, carbon black and coal-burning boiler.For adapting to the needs collecting the recovery of high-temperature flue gas fine dust, glass fabric has also evolved to three-dimensional structure from two-dimensional structure, but no matter be two dimension or three-dimensional glass fiber filter material, all there is the limitation such as deashing property difference, running resistance is high, service life is short, the fine dust rate of recovery especially to less than 1 micron is not high.Along with country's continuing to increase air contaminant treatment dynamics, efficient, low-resistance, long-life composite filtering material are administered industry at high-temperature flue gas and are arisen at the historic moment.
Summary of the invention
In order to overcome original simple glass fiber filter material Problems existing, the present invention proposes a kind of membrane-laminated fiberglass filter media, i.e. glass fabric and high molecular weight ptfe Microporous Membrane Composite Filter Material, it can give full play to glass fibre (inorganic medium) and the respective performance advantage of polytetrafluoroethylene (PTFE) (organic media), make up deficiency each other, synergy creates good comprehensive effect, the needs that the fine dust that especially can meet less than 1 micron reclaims.
Technical solution of the present invention is:
It comprises glass fiber filter cloth, it is characterized in that: have one deck porous membranes in the surface coverage of glass fiber filter cloth, is provided with the high temperature resistant post processing layer of one deck between glass fiber filter cloth and porous membranes.
As everyone knows, glass fibre is inorganic material, polytetrafluoroethylene (PTFE) is the macromolecule organic material that a kind of chemical inertness is very strong, by the polytetrafluoroethylene (PTFE) that common binding agent bonding is obtained, glass fibre composite membrane filtering material, firmness is obviously inadequate, be easy to occur demoulding, split the quality problems such as film, but at fiberglass-based cloth after post-treatment agent impregnation process, the post processing layer of one deck fluorochemical oligomer will be formed between glass fabric and polytetrafluoroethylene (PTFE) porous membranes, wherein, silane coupler plays between glass fabric and fluoropolymer to be acted on like " bridge ", again by high temperature hot pressing technique, melting to occur under high temperature hot pressing condition laminating with expanding microporous polytetrafluoroethylene (PTFE) film, just glass layer and polytetrafluoroethylene floor can be linked together well, form the novel heat resisting film-coating filtrate that a kind of firmness is high.Due to the microporous teflon membran that porous membranes used is through biaxial tension, its micro-pore diameter is 0.2-3 ü, so it can improve the fine dust rate of recovery of less than 1 micron; The porosity of more than 90% can reduce filtration resistance, increase the service life the glass fabric and high molecular weight ptfe Microporous Membrane Composite Filter Material that adopt the present invention program to obtain, because glass fabric is through post-treatment agent process, melting can be carried out laminating, and on glass fabric, forming the high temperature resistant post processing layer of one deck, it not only can improve the acidproof, alkaline-resisting of glass fabric.Folding quality, but also the firmness combined between glass fiber filter cloth and porous membranes is improved a lot, substantially prolongs the service life of filtering material.
Due to the polytetrafluoroethylmicroporous microporous membrane that the present invention adopts, micro-pore diameter is about 0.2-3 micron, therefore in use, to the dust of more than 1 micron can 100% collection, also can reach the dust-collecting efficiency of more than 99% to the fine dust of less than 1 micron.The film porosity that the present invention adopts in addition reaches more than 90%, thus improve the gas permeability of coated filter material, simultaneously due to features such as polytetrafluoroethylmaterial material smooth surface performances inherently, make the membrane-laminated fiberglass filter media after compound, there is excellent " surface filtration " characteristic, filtration resistance is low, and deashing number of times is few, avoids the filtrate choking phenomenon that traditional in-depth filtration brings.The service life 2 ~ 3 times of filtrate can be extended, complete " sack cleaner coated filter material " technical requirement that can reach State Environmental Protection Administration and issue, the recovery of the high-temperature flue gas of the industry such as cement, metallurgy can be widely used in, create good economic benefit and social benefit.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
1, the chemical treatments of fluorochemical oligomer is prepared: count by weight percentage, wherein fluoropolymer emulsions accounts for 8 ~ 20%, fluorine containing silane coupling agent accounts for 0.2 ~ 2.0%, film forming agent emulsion accounts for 1 ~ 8%, and surplus is water, stir be placed on fabric width 2m chemical treatment stove immersion trough in.
2, by fabric width 2m, mass area ratio be the alkali-free buiky yarn glass fabric 1 of 400g/m2 (or 750g/m2), in the immersion trough in above-mentioned chemical treatment stove after dipping, then dry at the temperature being placed in 220 DEG C ~ 320 DEG C, solidification.Now define a high temperature resistant post processing layer 3 on glass fabric surface.
3, the expanded microporous polytetra fluoroethylene-EPTEE film 2 through biaxial tension launched before hot-pressing roller, be laid on the alkali-free buiky yarn glass fabric 1 of last process process, under the temperature range of 260 DEG C ~ 370 DEG C, carry out hot pressing compound through hot press (fabric width 2m) pressure roller.
The glass fabric produced under these conditions and high molecular weight ptfe Microporous Membrane Composite Filter Material, Performance Detection index and application index see the following form.
Table 1 membrane-laminated fiberglass filter media Performance Detection index and application index
Claims (2)
1. glass fabric and high molecular weight ptfe Microporous Membrane Composite Filter Material, it is characterized in that: have one deck porous membranes in the surface coverage of glass fiber filter cloth, between glass fiber filter cloth and porous membranes, be provided with the high temperature resistant post processing layer of one deck.
2. according to the glass fabric described in claim 1 and high molecular weight ptfe Microporous Membrane Composite Filter Material, it is characterized in that: microporous membrane micro-pore diameter is about 0.2-3 micron, and porosity reaches more than 90%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510257607.2A CN104888534A (en) | 2015-05-20 | 2015-05-20 | Glass fiber cloth and macromolecular polytetrafluoroethylene microporous film composite filtering material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510257607.2A CN104888534A (en) | 2015-05-20 | 2015-05-20 | Glass fiber cloth and macromolecular polytetrafluoroethylene microporous film composite filtering material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104888534A true CN104888534A (en) | 2015-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510257607.2A Pending CN104888534A (en) | 2015-05-20 | 2015-05-20 | Glass fiber cloth and macromolecular polytetrafluoroethylene microporous film composite filtering material |
Country Status (1)
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| CN (1) | CN104888534A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107379680A (en) * | 2017-07-21 | 2017-11-24 | 江苏明晶布业股份有限公司 | A kind of glass composite felt overlay film filter material |
| CN108057279A (en) * | 2016-11-09 | 2018-05-22 | 浙江严牌过滤技术股份有限公司 | A kind of PTFE membrane filter material and preparation method thereof |
| CN110917767A (en) * | 2019-12-23 | 2020-03-27 | 江苏富泰净化科技股份有限公司 | Manufacturing method of high-temperature-resistant PTFE composite membrane filter material |
| CN112460163A (en) * | 2020-12-15 | 2021-03-09 | 东台市华阳玻纤有限责任公司 | Manufacturing process of asbestos-free clutch facing |
-
2015
- 2015-05-20 CN CN201510257607.2A patent/CN104888534A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108057279A (en) * | 2016-11-09 | 2018-05-22 | 浙江严牌过滤技术股份有限公司 | A kind of PTFE membrane filter material and preparation method thereof |
| CN107379680A (en) * | 2017-07-21 | 2017-11-24 | 江苏明晶布业股份有限公司 | A kind of glass composite felt overlay film filter material |
| CN107379680B (en) * | 2017-07-21 | 2019-11-12 | 江苏明晶布业股份有限公司 | A kind of glass composite felt overlay film filter material |
| CN110917767A (en) * | 2019-12-23 | 2020-03-27 | 江苏富泰净化科技股份有限公司 | Manufacturing method of high-temperature-resistant PTFE composite membrane filter material |
| CN112460163A (en) * | 2020-12-15 | 2021-03-09 | 东台市华阳玻纤有限责任公司 | Manufacturing process of asbestos-free clutch facing |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
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Application publication date: 20150909 |