CN101927110A - Anti-static glass fiber composite echelon filter material and preparation method thereof - Google Patents
Anti-static glass fiber composite echelon filter material and preparation method thereof Download PDFInfo
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- CN101927110A CN101927110A CN 201010264843 CN201010264843A CN101927110A CN 101927110 A CN101927110 A CN 101927110A CN 201010264843 CN201010264843 CN 201010264843 CN 201010264843 A CN201010264843 A CN 201010264843A CN 101927110 A CN101927110 A CN 101927110A
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- 239000000463 material Substances 0.000 title claims abstract description 57
- 239000003365 glass fiber Substances 0.000 title claims abstract description 55
- 239000002131 composite material Substances 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 238000005470 impregnation Methods 0.000 claims abstract description 22
- 239000000835 fiber Substances 0.000 claims abstract description 21
- 239000004744 fabric Substances 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims description 44
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 44
- 230000008569 process Effects 0.000 claims description 43
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 41
- 239000000706 filtrate Substances 0.000 claims description 29
- 239000004809 Teflon Substances 0.000 claims description 21
- 229920006362 Teflon® Polymers 0.000 claims description 21
- 210000004379 membrane Anatomy 0.000 claims description 21
- 206010046996 Varicose vein Diseases 0.000 claims description 19
- -1 polytetrafluoroethylene Polymers 0.000 claims description 17
- 238000007598 dipping method Methods 0.000 claims description 10
- 239000000243 solution Substances 0.000 claims description 10
- 238000005096 rolling process Methods 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 238000005098 hot rolling Methods 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 239000000654 additive Substances 0.000 claims description 6
- 230000000996 additive effect Effects 0.000 claims description 6
- 238000001467 acupuncture Methods 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 230000004888 barrier function Effects 0.000 claims description 5
- 244000144992 flock Species 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- 238000009960 carding Methods 0.000 claims description 2
- 239000011259 mixed solution Substances 0.000 claims description 2
- 238000012805 post-processing Methods 0.000 claims description 2
- 238000001914 filtration Methods 0.000 abstract description 25
- 239000000428 dust Substances 0.000 abstract description 16
- 230000003068 static effect Effects 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 239000011148 porous material Substances 0.000 abstract description 3
- 239000000779 smoke Substances 0.000 abstract description 3
- 239000012982 microporous membrane Substances 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 238000009941 weaving Methods 0.000 description 6
- 238000009987 spinning Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002079 cooperative effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention provides an anti-static glass fiber composite echelon filter material with high temperature resistance, corrosion resistance, good filtering property, long service life and low cost and a preparation method thereof, aiming at a working condition environment with complex smoke components and high dust static. The anti-static glass fiber composite echelon filter material sequentially comprises a polyfluortetraethylene microporous membrane layer, a polyfluortetraethylene impregnation processing layer, a polyfluortetraethylene fiber net layer and an anti-static glass fiber expanded cloth layer from a dust receiving surface to a gas purifying surface; and in addition, the porosity is enhanced layer by layer from the dust receiving surface to the gas purifying surface, therefore, an echelonment pore is formed.
Description
Technical field
The present invention relates to a kind of composite filtering material and preparation method thereof, especially a kind of anti-static glass fiber composite echelon filter material and preparation method thereof.
Background technology
The flue-gas temperature height that partial fume emission point such as coal-burning power plant, carbon black industry, steel industry, non-ferrous metal industry, chemical industry, cement industry, waste incineration industry or airborne dust point produce, contain material composition complexity such as acidity, alkalescence, dust static is big simultaneously, requires very high to the high-temperature-resistant filtering material overall target.The combination property of organic fibers such as the glass fibre of high temperature filtration field use at present, polyphenylene sulfide, polyimides, aramid fiber is relatively poor, can not satisfy the actual demand of filtering under the above-mentioned worst hot case.For the harm that improves the service life under filtering material approaches 260 ℃ for a long time in above-mentioned flue dust temperature the complex working condition and reduce generation of static electricity, mostly adopting increases cooling installation and antistatic facility and waits and avoid high temperature and static to the infringement of filtering material before deduster, increased production cost greatly but do like this.
Summary of the invention
The objective of the invention is to be directed to exhaust gas components complexity, work condition environment that dust static is big, provide a kind of high temperature resistant, corrosion-resistant, strainability is good, antistatic, long service life, anti-static glass fiber composite echelon filter material that cost is low and preparation method thereof.
Realize that one of purpose of the present invention is an anti-static glass fiber composite echelon filter material, comprise the microporous teflon membran layer successively to the pure qi (oxygen) face, polytetrafluoroethylene (PTFE) impregnation process layer, PTFE web layer, anti-static glass fiber varicosity layer of cloth by dust-collecting face; And by meeting knoisphere to the pure qi (oxygen) layer, porosity successively increases, and forms echelon shape hole.
The aperture of described microporous teflon membran is between 0.3 μ m～0.8 μ m.
Described PTFE web is made by polytef flocks.
Realize that two of purpose of the present invention is preparation methods of anti-static glass fiber composite echelon filter material, may further comprise the steps:
(1) weaves anti-static glass fiber varicosity cloth;
(2) make PTFE web, and with the woven anti-static glass fiber varicosity of step (1) cloth pinprick reinforcement;
(3) filtrate that step (2) is made carries out the impregnation process of polytetrafluoroethylsolution solution;
(4) step (3) being carried out the hot rolling that filtrate after the impregnation process carries out microporous teflon membran is laminated with.
The anti-static glass fiber that uses in the described step (1) is through the impregnation process of polytetrafluoroethylsolution solution.
The production process of described step (2) comprising: with polytetrafluoroethylene fibre through preliminary treatment → pre-shredding → main shredding → evenly mix → feed giving → carding → with described anti-static glass fiber varicosity cloth → main acupuncture → have a shave → post processing → thermal finalization → check.
Described pretreatment process is evenly to spread out behind the polytetrafluoroethylene fibre bale breaking, sprays to contain 3wt%～5wt% antistatic additive aqueous solution, places after 24 hours and uses.Process for treating surface by antistatic additive improves its bulkiness, be beneficial to next procedure processing increases into interfibrous cohesive force behind the net simultaneously.
Described pre-shredding operation is that the polytetrafluoroethylene fibre that preliminary treatment is good is fed to the card wire opener through carrying flat curtain, carries out the free style shredding.Purpose is that the damage of minimizing fiber makes fibre bundle obtain shredding simultaneously and decomposition is beneficial to following process.
The treatment process of described step (3) comprises in the filtrate introducing polytetrafluoroethylene (PTFE) mixed solution dipping tank that step (2) is made, handles through dipping, oven dry, thermal finalization.
The treatment process of described step (4) comprises that the good filtrate of step (3) impregnation process is introduced heat with microporous teflon membran is laminated with machine, by stretching and drawing microporous barrier is trailed, close microporous teflon membran and good firm the combining of filtrate of described impregnation process that to trail through rolling of hot-rolling again.
Description of drawings
Fig. 1 is the structural representation of anti-static glass fiber composite echelon filter material of the present invention;
Fig. 2 is the micro-structure diagram of anti-static glass fiber composite echelon filter material of the present invention.
The specific embodiment
Anti-static glass fiber composite echelon filter material of the present invention comprises as shown in Figure 1 by meeting knoisphere to pure qi (oxygen) layer four-layer structure, top layer (meeting knoisphere) is a microporous teflon membran 1, the second layer is a polytetrafluoroethylene (PTFE) impregnation process layer 2, the 3rd layer is PTFE web 3, bottom is an anti-static glass fiber varicosity cloth 4, to bottom, porosity successively increases by the top layer, forms echelon shape hole.Described PTFE web 3 is made by polytef flocks.
Anti-static glass fiber composite echelon filter material of the present invention top layer is smooth, fine and close microporous teflon membran, filter type changes " both surface filtration " into by " top layer+deep layer ", help careful dust collection, catch the dirt effect stability, thereby efficiency of seizing dust is higher than other filtering material, and dust removal efficiency reaches 99.99%; And make the easy deashing of high-temperature filter material, running resistance has only 35%～40% of traditional filtrate, and its filter efficiency and the rate of filtration significantly improve.
The anti-static glass fiber composite echelon filter material second layer of the present invention is the polytetrafluoroethylene (PTFE) impregnate layer that forms after the polytetrafluoroethylene (PTFE) impregnation process, this layer can play the effect of bridge between microporous teflon membran and PTFE web, be convenient to the combination of the two, increase overlay film firmness and durability degree.
Anti-static glass fiber composite echelon filter material of the present invention is in order to reduce filtering material resistance, the 3rd layer of polytetrafluoroethylene (PTFE) net that adopts short fiber to be made into, because of porosity greater than polytetrafluoroethylene (PTFE) impregnation process film, when the dusty gas that enters filtrate inside is continued to filter, can also play the air-flow effect that disperses, help passing through smoothly of air-flow, reduce running resistance.
Anti-static glass fiber composite echelon filter material bottom of the present invention is an anti-static glass fiber varicosity cloth, and its porosity is shunted the gas that enters filtrate once more than PTFE web is bigger; Owing to anti-static glass fiber varicosity cloth acid-fast alkali-proof, antistatic and water resistance, can improve the decay resistance of filtrate; Simultaneously, anti-static glass fiber varicosity cloth adds wire in spinning or weaving process, and the one, play the effect of antistatic; The 2nd, play the effect of reinforcement, make composite echelon filter material keep very high tensile strength, prolong the service life of filtrate.
The aperture of described microporous teflon membran is between 0.3 μ m～0.8 μ m.Advantages such as polytetrafluoroethylene (PTFE) has high-low temperature resistant, corrosion-resistant, weatherability, highly lubricatedly do not adhere to, nonhazardous, because the aperture of polytetrafluoroethylmicroporous microporous membrane is little of 0.3～0.8 μ m, need not to form dust layer during filtrating smoke dust, rely on catching the dirt function the good dirt effect of catching can being arranged of self, the dust catching filter can reach 99.99%; Controlled powder process dirt enters the filtrate depths simultaneously, prevents that filtrate is blocked; In addition, the film surface coefficient of kinetic friction reduces, and has improved deashing property, also helps to improve the hydrophobicity of self, can prevent that filtrate from causing the filter bag fouling because of dewfall.
The microstructure of anti-static glass fiber composite echelon filter material of the present invention as shown in Figure 2, voidage reduces successively from outside to inside, is ladder-shaper structure.The beloid trapezoidal gas channel of the anti-static glass fiber composite echelon filter material of this structure helps air-flow to be passed through smoothly, and the filtrate internal layer is difficult for control of dust, keeps the filtrate long-time running and the filtrate running resistance does not raise substantially or the rate of climb is slow.Specifically, dusty gas in filtrate by the time, the footpath increases gradually from dust-collecting face to the pure qi (oxygen) face, makes pore size filter flare in the filtrate, the fluid passage that dredge close back before forming is beloid trapezoidal diffusing circulation road with the wide channel change that streams of conventional filter material.Dust-collecting face microporous teflon membran aperture is very little, filtering accuracy is very high, the closer to the pure qi (oxygen) face, the aperture is big more, is filtering the small pore that central dust is difficult for stopping up filtrate, good permeability like this, thereby reduce the pressure drop of filtrate, reduce the deashing number of times, save cost, can also prolong the service life of filtrate simultaneously.
The preparation method embodiment of anti-static glass fiber composite echelon filter material of the present invention is as follows:
Embodiment one
1, impregnation process and the varicosity that glass is carried out polytetrafluoroethylsolution solution handled, and adds wire in spinning or weaving process, uses air-jet loom machine, adopts 1/3 twill technology to be woven into 350g/m
2Anti-static glass fiber varicosity cloth.
2, the polytetrafluoroethylene fibre raw material is unpacked, spreads out equably, spray and contain the 3wt% antistatic additive aqueous solution, place after 24 hours, the following operation of process:
Pre-shredding → main shredding → hopper mixing → combing → make 180g/m
2～200g/m
2PTFE web, anti-static glass fiber varicosity cloth+PTFE web → pre-needling → main acupuncture → have a shave → singe → impregnation process → thermal finalization → check rolling operation is made 600g/m
2Composite fiber filtering material.
3, the above-mentioned filtrate that processes is introduced in the polytetrafluoroethylsolution solution dipping tank, handled, make composite filtering material through dipping, oven dry, thermal finalization.
4, composite fiber filtering material and the microporous teflon membran introducing heat of making is laminated with machine, by stretching and drawing microporous barrier is trailed, close microporous teflon membran and firm the combining of composite fiber filtering material that to trail through rolling of hot-rolling again, make 600g/m
2Anti-static glass fiber composite echelon filter material.
Embodiment two
1, glass is handled through the impregnation process and the varicosity of polytetrafluoroethylsolution solution, in spinning or weaving process, added wire, use the arrow shaft loom again, adopt the weaving process of diclinic line to make 450g/m
2The anti-static glass fiber base cloth.
2, the polytef flocks raw material is unpacked, spreads out equably, spray and contain the 4wt% antistatic additive aqueous solution, place after 24 hours, the following operation of process:
Pre-shredding → main shredding → hopper mixing → combing → make 220g/m
2～240g/m
2PTFE web, anti-static glass fiber varicosity cloth+PTFE web → pre-needling → main acupuncture → have a shave → singe → impregnation process → thermal finalization → check rolling operation is made 700g/m
2Composite fiber filtering material.
3, the filtrate that processes is introduced in the polytetrafluoroethylsolution solution dipping tank, handled, make composite filtering material through dipping, oven dry, thermal finalization.
4, with the composite fiber filtering material PTFE web aspect made upwards and microporous teflon membran introduce heat and be laminated with machine, by stretching and drawing microporous barrier is trailed, close microporous teflon membran and firm the combining of composite fiber filtering material that to trail through rolling of hot-rolling again, make 700g/m
2Anti-static glass fiber composite echelon filter material.
Embodiment three
1, impregnation process and the varicosity that glass is carried out polytetrafluoroethylsolution solution handled, and adds wire in spinning or weaving process, uses the arrow shaft loom again, adopts 3/5 latitude two-fold weaving process to make 620g/m
2The anti-static glass fiber base cloth.
2, the polytef flocks raw material is unpacked, spreads out equably, spray and contain the 5wt% antistatic additive aqueous solution, place after 24 hours, the following operation of process:
Pre-shredding → main shredding → hopper mixing → combing → make 260g/m
2～300g/m
2PTFE web.Anti-static glass fiber varicosity cloth+PTFE web → pre-needling → main acupuncture → have a shave → singe → impregnation process → thermal finalization → check rolling operation is made 980g/m
2Composite fiber filtering material.
3, the above-mentioned filtrate that processes is introduced in the polytetrafluoroethylsolution solution dipping tank, handled, make composite filtering material through dipping, oven dry, thermal finalization.
4, composite fiber filtering material and the microporous teflon membran introducing heat of making is laminated with machine, by stretching and drawing microporous barrier is trailed, close microporous teflon membran and firm the combining of composite fiber filtering material that to trail through rolling of hot-rolling again, make 980g/m
2Anti-static glass fiber composite echelon filter material.
Anti-static glass fiber composite echelon filter material of the present invention makes up for each other's deficiencies and learn from each other glass fiber material, wire material and polytetrafluoroethylmaterial material on performance, produce cooperative effect, make the combination property of composite be better than former composition material, thereby satisfy the filtrating smoke dust requirement of exhaust gas components complexity, operating mode that dust static is big.
Claims (10)
1. an anti-static glass fiber composite echelon filter material comprises the microporous teflon membran layer by dust-collecting face successively to the pure qi (oxygen) face, polytetrafluoroethylene (PTFE) impregnation process layer, PTFE web layer, anti-static glass fiber varicosity layer of cloth; And by meeting knoisphere to the pure qi (oxygen) layer, porosity successively increases, and forms echelon shape hole.
2. anti-static glass fiber composite echelon filter material according to claim 1 is characterized in that: the aperture of described microporous teflon membran is between 0.3 μ m～0.8 μ m.
3. according to claim 1 or 2 arbitrary described anti-static glass fiber composite echelon filter materials, it is characterized in that: described PTFE web is made by polytef flocks.
4. preparation method who prepares the arbitrary anti-static glass fiber composite echelon filter material of claim 1～3 may further comprise the steps:
(1) weaves anti-static glass fiber varicosity cloth;
(2) make PTFE web, and with the woven anti-static glass fiber varicosity of step (1) cloth pinprick reinforcement;
(3) filtrate that step (2) is made carries out the impregnation process of polytetrafluoroethylsolution solution;
(4) step (3) being carried out the hot rolling that filtrate after the impregnation process carries out microporous teflon membran is laminated with.
5. the preparation method of anti-static glass fiber composite echelon filter material according to claim 4 is characterized in that: the impregnation process of the anti-static glass fiber process polytetrafluoroethylsolution solution of using in the described step (1).
6. the preparation method of anti-static glass fiber composite echelon filter material according to claim 4, it is characterized in that: the production process of described step (2) comprising: with polytetrafluoroethylene fibre through preliminary treatment → pre-shredding → main shredding → evenly mix → feed giving → carding → with described anti-static glass fiber varicosity cloth pre-needling → main acupuncture → have a shave → post processing → thermal finalization → check.
7. the preparation method of anti-static glass fiber composite echelon filter material according to claim 6, it is characterized in that: described pretreatment process is evenly to spread out behind the polytetrafluoroethylene fibre bale breaking, sprinkling contains 3wt%～5wt% antistatic additive aqueous solution, places after 24 hours and uses.
8. the preparation method of anti-static glass fiber composite echelon filter material according to claim 6 is characterized in that: described pre-shredding operation is that the polytetrafluoroethylene fibre that preliminary treatment is good is fed to the card wire opener through carrying flat curtain, carries out the free style shredding.
9. the preparation method of anti-static glass fiber composite echelon filter material according to claim 4, it is characterized in that: the treatment process of described step (3) comprises in the filtrate introducing polytetrafluoroethylene (PTFE) mixed solution dipping tank that step (2) is made, handles through dipping, oven dry, thermal finalization.
10. according to the preparation method of the arbitrary described anti-static glass fiber composite echelon filter material of claim 4～9, it is characterized in that: the treatment process of described step (4) comprises that the good filtrate of step (3) impregnation process is introduced heat with microporous teflon membran is laminated with machine, by stretching and drawing microporous barrier is trailed, close microporous teflon membran and good firm the combining of filtrate of described impregnation process that to trail through rolling of hot-rolling again.
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| CN2010102648434A CN101927110B (en) | 2010-08-27 | 2010-08-27 | Anti-static glass fiber composite echelon filter material and preparation method thereof |
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| CN102824788A (en) * | 2012-09-07 | 2012-12-19 | 同济大学 | High-efficiency and long-service life compound filter material structure used for car engine and preparation method for compound filter material structure |
| CN103304156A (en) * | 2012-03-13 | 2013-09-18 | 厦门三维丝环保股份有限公司 | Coating formula improving performances of glass fiber and compound filter material thereof and implementing method thereof |
| CN103357214A (en) * | 2013-08-01 | 2013-10-23 | 南京际华三五二一环保科技有限公司 | Preparation method of antistatic filter material for flue gas filtration |
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