CN207270890U - A kind of pre-oxidized polyacrylonitrile fiber high temperature resistant bag-type dusting filtrate - Google Patents
A kind of pre-oxidized polyacrylonitrile fiber high temperature resistant bag-type dusting filtrate Download PDFInfo
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- CN207270890U CN207270890U CN201721243755.XU CN201721243755U CN207270890U CN 207270890 U CN207270890 U CN 207270890U CN 201721243755 U CN201721243755 U CN 201721243755U CN 207270890 U CN207270890 U CN 207270890U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The utility model discloses a kind of pre-oxidized polyacrylonitrile fiber high temperature resistant bag-type dusting filtrate, dust-collecting face fibrous face layer and the non-dust-collecting face fibrous face layer that the upper and lower surface of basic unit is formed are become entangled in including basic unit and by needling process by the composite fibre that pre-oxidized polyacrylonitrile fiber and polyphenylene sulfide fibre form, the basic unit includes at least one layer of base fabric；The thickness of the dust-collecting face fibrous face layer is more than the thickness of non-dust-collecting face fibrous face layer, and the length of the dust-collecting face fibrous face layer or the polyphenylene sulfide fibre in non-dust-collecting face fibrous face layer is longer than the length of pre-oxidized polyacrylonitrile fiber.The utility model has that intensity is high, resistance to elevated temperatures is excellent, fire-retardant, corrosion-resistant, porosity is high, filtration efficiency, Resistance Value are low and the excellent performance such as stabilization, easy-to-clean ash, service life is long and cheap, can be that pollution control enterprise saves a large amount for the treatment of costs suitable for the high temperature flue gas emission environment such as smelting iron and steel, waste incineration, thermal power generation and Industrial Stoves.
Description
Technical field
It the utility model is related to a kind of bag-type dusting filtrate, more particularly to a kind of pre-oxidized polyacrylonitrile fiber high temperature resistant bag
Formula dedusting filtrate.
Background technology
The source of air pollution is concentrated mainly on the discharge of the industrial circles such as steel, metallurgy, thermoelectricity, cement and waste incineration
Exhaust gas, these exhaust gas temperature may be up to more than 300 DEG C, even aramid fiber, polyphenylene sulfide (PPS), polyimides, polytetrafluoroethylene (PTFE)
(PTFE) filtering material prepared by contour performance fibers, is also only capable of the long-term work under conditions of 200 DEG C or so, high-temperature flue gas is past
It could be filtered after the cooling of increase long pipe road toward needs.Aramid fiber, polyphenylene sulfide commonly used in high temperature filtration
(PPS), polyimides, the contour performance fibers price of polytetrafluoroethylene (PTFE) (PTFE) are generally higher, and most of iron and steel enterprise at present
In to maintain yield to lose the state of operation, lack of capital, it is difficult to substantial contribution is put into environmental protection, be faced with interests with
Difficult selection between environment.
Polyacrylonitrile fibre does not originally possess heat safe characteristic, but excellent polyacrylonitrile fibre is by pre-oxidation, carbon
Change, carbon fiber can be made after graphitization, each step can all produce intermediate product in this process, and preoxidized polyacrylonitrile is fine
Dimension is exactly one of them, and in actual production, a part of pre-oxidized fibers are used to continue deep processing, and other are then only used for making
Make some cheap products, such as sound-proof material, heat-barrier material, fire proofing, form not little waste.The pre- oxygen of polyacrylonitrile
Chemical fibre dimension limited oxygen index be up to more than 45%, have do not melt, do not soften, do not shrink, performance is steady in 400 DEG C of atmospheric environment
The features such as determining, cost is relatively low, and pre-oxidized polyacrylonitrile fiber is about 30 yuan/kilogram, and the price of other high-performance fibers is equal
At 120 yuan or so, directly high-temperature flue gas can be filtered, be the ideal chose of high temperature resistant bag-type dusting filtrate.
China's filtering is started late with industrial textile, compared with developed countries there are larger gap, especially in high temperature resistant
In terms of bag-type dusting filtrate, the performance and price of domestic filtering material product are all difficult to be formed to compete with external product.Polypropylene
Although nitrile pre-oxidized fibers resistance to elevated temperatures is excellent, shear strength is poor, and difficulty of processing is larger, in high-temperature bag dust removal filtrate
The application in field still develops slowly, and not yet forms industrialized production.
Japan is constantly in leading position in terms of carbon fiber research, its pre-oxidized polyacrylonitrile fiber is still mainly used for
Refractory material, heat-barrier material, Fireproof carpet etc., and fire-entry suit of processing program complexity etc., but in processing cost phase
It is rarely reported in terms of to relatively low but high added value high temperature resistant bag-type dusting filtrate；Domestic carbon fiber research is started late,
Pre-oxidized fibers should aspect it is even more so, 1999, Zhang Haosheng of textile scientific research institute of Jiangsu Province et al. was once used
Pre-oxidized polyacrylonitrile fiber prepares high-temperature bag dust removal filtrate, using needling process by pre-oxidized polyacrylonitrile fiber with it is high-strength
Alkali-free glass fibre enhancing base fabric is compound so that the intensity of Compound filtering material has brought up to more than 1000N/5cm, yet with pre- oxygen
Chemical fibre is tieed up belongs to fragile fibre material with glass fibre, is unfavorable for deashing and long-time service, is not widely used.Except this it
Outside, rarely have and see on making high temperature resistant bag-type dusting filtrate and the report applied with pre-oxidized fibers.
Related in 104711775 A of utility application CN using pre-oxidized polyacrylonitrile fiber staple fiber and
Long filament prepares a kind of preparation method of continuous decentralized filament fiber Nomex, but its purpose is not intended to high-temperature bag dust removal neck
Domain, and and pre-oxidized polyacrylonitrile fiber is not solved for the strength problem and deashing property problem present in filtrate, its system
The defects of standby Nomex is low there are intensity, and rough surface, filter efficiency is low, and deashing property is poor, and service life is short, can apply
In thick effect filtering, but it is difficult to the Essential Performance Requirements for reaching conventional bag-type dusting filtrate, is not suitable for the filter of high temperature resistant bag-type dusting
Material field.
Asked in conclusion preparing high temperature resistant bag-type dusting filtrate using pre-oxidized polyacrylonitrile fiber at present there are following
Topic：
1. pre-oxidized polyacrylonitrile fiber self-strength is relatively low, and shear strength is poor, and difficulty of processing is larger, general acupuncture work
Skill damages it excessive, and product strength is extremely low, is simply possible to use in acoustical cotton, heat insulation foam etc., is not suitable for high-temperature bag dust removal filtrate
Field；
2. the Nomex that pre-oxidized polyacrylonitrile fiber is process, surface are slightly made, but internal fiber surface is very
Smooth, the defects of this structure is low there are filter efficiency in bag dust abatement field, and deashing property is poor, and service life is short, need
Frequently replace, cost goes up not down.
Utility model content
High-temperature bag dust removal filtrate is dfficult to apply to for current pre-oxidized polyacrylonitrile fiber, but great potential quality again at the same time
Present situation, the utility model aim is to provide a kind of excellent performance and cheap pre-oxidized polyacrylonitrile fiber high temperature resistant bag
Formula dedusting filtrate, it is mainly woven in base fabric by pre-oxidized polyacrylonitrile fiber and polyphenylene sulfide fibre are blended, effectively evaded
Pre-oxidized polyacrylonitrile fiber self-strength is relatively low and the shortcomings that shear strength is poor, and improve the filter efficiency of its product with it is clear
Grey performance, and gas pollution control material cost is greatly reduced, help to promote Environmental Protection in China cause process.
The purpose of this utility model is achieved through the following technical solutions：A kind of pre-oxidized polyacrylonitrile fiber high temperature resistant bag
Formula dedusting filtrate, including basic unit and be made up of pre-oxidized polyacrylonitrile fiber and polyphenylene sulfide fibre needling process mixed
Condensating fiber becomes entangled in the dust-collecting face fibrous face layer on the upper and lower surface of basic unit and non-dust-collecting face fibrous face layer, and the basic unit is included extremely
Few one layer of base fabric；The thickness of the dust-collecting face fibrous face layer is slightly larger than the thickness of non-dust-collecting face fibrous face layer, and described meets dirt
Face fibrous face layer or the length of the polyphenylene sulfide fibre in non-dust-collecting face fibrous face layer are slightly longer than pre-oxidized polyacrylonitrile fiber
Length.
As a preferred embodiment of the utility model, the base fabric uses low close aramid fiber woven fabric.Low close aramid fiber machine
Aramid fiber used in fabric is aramid fiber 1313, and warp thread is identical with weft yarn line density, its line density between 30tex to 45tex, through it is close with
Filling density is identical, its weft density is between 55/10cm to 75/10cm.Due to pre-oxidized polyacrylonitrile fiber shear strength compared with
Low, base fabric need to select high-strength flatness but have the high-temperature fibre product of certain flexibility at the same time, and aramid fiber has been provided simultaneously with excellent above
Point, therefore use kevlar fabric.Using the relatively low low close aramid fiber woven fabric of weft density as base fabric, base fabric can be reduced to filtrate mistake
Filter the influence of performance proof strength, and identical with filling density can ensure each to same of high-temperature bag dust removal filtrate through close again at the same time
Property.
The pre-oxidized polyacrylonitrile fiber length is 50-65mm, and the polyphenylene sulfide fibre length is 75-
The ratio 65 of 90mm, the pre-oxidized polyacrylonitrile fiber and polyphenylene sulfide fibre mixing:35 to 55:Between 45.Adopt merely
When preparing filtrate with pre-oxidized polyacrylonitrile fiber, the strength of filtrate is relatively low, and filter efficiency is poor with deashing property, only possesses
Resistance to elevated temperatures, to improve its mechanical property, while submits the fiber inside filtrate to tangle degree and hole tortuous, selects resistance to
High temperature, is provided simultaneously with the heat treatable polyphenylene sulfide fibre of fusing point and is mixed with, and experiment results proved is when polyphenylene sulfide fibre
Content is before 35%-45%, and when length is slightly longer than pre-oxidized polyacrylonitrile fiber is pre- to polyacrylonitrile most beneficial for reducing
The damage of oxidized fibre, while improve its filter efficiency and deashing property.
The ratio of the grammes per square metre of the dust-collecting face fibrous face layer and the grammes per square metre of non-dust-collecting face fibrous face layer is 6:4, two fibres
It is 500-650g/m to tie up the total grammes per square metre of surface layer2。
Further, it is stained with polytetrafluoroethyl-ne on the fiber of the dust-collecting face fibrous face layer and non-dust-collecting face fibrous face layer
Alkene particle.
Further, the dust-collecting face fibrous face layer is equipped with least one layer of polytetrafluoroethylene film.
The utility model has the advantages that：
The utility model is mixed by using pre-oxidized polyacrylonitrile fiber with polyphenylene sulfide fibre with certain proportion, preferably
Using low close aramid fiber woven fabric as base fabric, pre-oxidized polyacrylonitrile fiber high temperature resistant bag-type dusting filtrate is prepared by needle point method.Can
Effectively solve pre-oxidized polyacrylonitrile fiber intensity it is low, shear strength is poor, it is difficult to process, product strength is low, filter efficiency it is low and
The problem of deashing property is poor, common identical compared with grammes per square metre of prepared pre-oxidized polyacrylonitrile fiber high temperature resistant bag-type dusting filtrate
Pre-oxidized polyacrylonitrile fiber Nomex, intensity can be improved to more than 1000N/5cm by 100-200N/5cm, while can be 200
Possess 90% intensity under DEG C hot conditions (referring to Fig. 2)；To the filter efficiency of PM1.0 can by 80% or so improve to 95% with
On；And filter efficiency is basically unchanged under the high temperature conditions, dust filtration efficiency can be improved to more than 99.9% by 99.1% or so,
The residual resistive plain polypropylene nitrile pre-oxidized fibers Nomex rate of climb identical compared with grammes per square metre is slower (referring to Fig. 3) at the same time, and 30
Secondary 1000Pa cleaning cycles dust-cleaning efficiency can be improved to more than 99% by 85% or so.
The utility model effectively improves cohesive force between pre-oxidized polyacrylonitrile fiber, and it is low to solve its intensity, poor processability
The shortcomings that, while increased fiber surface roughness, the high temperature resistant bag-type dusting filtrate of production have intensity height, resistance to elevated temperatures
It is excellent, fire-retardant, corrosion-resistant, porosity is high, filtration efficiency, Resistance Value are low and the excellent performance such as stabilization, easy-to-clean ash, service life
It is long and cheap, can suitable for the high temperature flue gas emission environment such as smelting iron and steel, waste incineration, thermal power generation and Industrial Stoves
A large amount for the treatment of costs are saved for pollution control enterprise.
Brief description of the drawings
Fig. 1 is that the structure of the pre-oxidized polyacrylonitrile fiber high temperature resistant bag-type dusting filtrate of the utility model embodiment one is shown
It is intended to.
Fig. 2 is pre-oxidized polyacrylonitrile fiber high temperature resistant bag-type dusting filtrate and plain polypropylene nitrile pre-oxidized fibers acupuncture
The extension at break curve of felt.
Fig. 3 is pre-oxidized polyacrylonitrile fiber high temperature resistant bag-type dusting filtrate and plain polypropylene nitrile pre-oxidized fibers acupuncture
Filter efficiency of the felt to different diameter airborne particle.
Fig. 4 is the remaining resistance of pre-oxidized polyacrylonitrile fiber high temperature resistant bag-type dusting 30 1000Pa cleaning cycles of filtrate
Force-time curve.
Fig. 5 is pre-oxidized polyacrylonitrile fiber high temperature resistant bag-type dusting filter material surface pattern prepared by the utility model.
Fig. 6 is that the structure of the pre-oxidized polyacrylonitrile fiber high temperature resistant bag-type dusting filtrate of the utility model embodiment two is shown
It is intended to.
Embodiment
Embodiment one
As shown in Figure 1, the pre-oxidized polyacrylonitrile fiber high temperature resistant bag-type dusting filtrate of the present embodiment, including basic unit 1 with
And by needling process the composite fibre that pre-oxidized polyacrylonitrile fiber and polyphenylene sulfide fibre form to be become entangled in basic unit upper and lower
The dust-collecting face fibrous face layer 2 on surface and non-dust-collecting face fibrous face layer 3.Pre-oxidized polyacrylonitrile fiber length is 60mm, polyphenyl
Sulfide fibers length is the ratio 60 of 80mm, pre-oxidized polyacrylonitrile fiber and polyphenylene sulfide fibre mixing:Between 40.Dust-collecting face
The ratio of the grammes per square metre of fibrous face layer and the grammes per square metre of non-dust-collecting face fibrous face layer is 6:4, described two total grammes per square metres of fibrous face layer are
500g/m2, the thickness D1 of dust-collecting face fibrous face layer 2 is slightly larger than the thickness D2 of non-dust-collecting face fibrous face layer 3.Basic unit is one layer of base
The low close aramid fiber woven fabric of cloth, aramid fiber used in the low close aramid fiber woven fabric is aramid fiber 1313, and warp thread is with weft yarn line density
40tex, is 65/10cm through close and filling density.Dedusting filtrate is by infusion process in dust-collecting face fibrous face layer 2 and non-dust-collecting face
Polytetrafluoroethylgranule granule is all stained with fibrous face layer 3.
The preparation method of dedusting filtrate is as follows：
Disappear electrostatic treatment：The pre-oxidized polyacrylonitrile fiber that length is 60mm is chosen, and the polyphenylene sulfide that length is 80mm
Ether fiber, with 60:40 mass ratio is mixed, and the cationic antistatic agent that mass fraction is 3% is sprayed on fiber, then
When sealing and standing 24 is small at room temperature.
Shredding, combing：Fiber by the electrostatic treatment that disappears is subjected to shredding mixed cotton, is sent into carding machine, carding machine tin is set
Woods and doffer's spacing are 0.15mm, and speed is than being 1.5.
Lapping：Fiber presses the lapping of dust-collecting face fibrous face layer/woven aramid fiber base fabric/non-dust-collecting face fibrous face layer after combing
Structure carries out alternately lapping, wherein aramid fiber used in low close aramid fiber woven fabric is aramid fiber 1313, warp thread is with weft yarn line density
40tex, is 65/10cm through close and filling density, dust-collecting face web grammes per square metre is 300g/m2, non-dust-collecting face web grammes per square metre is
200g/m2。
Acupuncture：Using grammes per square metre as 300g/m2Dust-collecting face towards pricker carry out acupuncture, wherein pre-needling pricker density be 20
Thorn/cm2, depth 5mm, frequency is 100 thorns/min, and output speed 2.0m/min, main acupuncture pricker density is 50 thorns/cm2,
Depth is 7mm, and frequency is 250 thorns/min, and output speed 2.0m/min, pre-oxidized polyacrylonitrile fiber is resistance to after needling process
High-temperature bag dust removal filtrate matrix basic forming.
Spun lacing：Web is directly entered spun-laced machine after acupuncture, and water jet process is：40/cm of spray nozzle density2, pressure is
5MPa, output speed 2.0m/min, grammes per square metre 300g/m2Dust-collecting face towards nozzle.After water jet process is handled, polypropylene
The distribution of nitrile pre-oxidized fibers high temperature resistant bag-type dusting filter media fibre is more uniform, further reduces fiber gap, improves fiber
Part tangles degree, and improves the surface state of filtrate, especially dust-collecting face surface state, can further improve its filter efficiency
With deashing property.
Washing is deoiled and dried：After water jet process, pre-oxidized polyacrylonitrile fiber high temperature resistant bag-type dusting filtrate is carried out
Washing is gone oil processing and is dried.
High-temperature heat treatment：Further heat is carried out to the pre-oxidized polyacrylonitrile fiber high temperature resistant bag-type dusting filtrate of drying
Processing, specific to use 5 group of two Roller hot rolling, upper hot rolling Roller temperature is 280 DEG C, and lower hot rolling Roller temperature is 290 DEG C, and wherein dust-collecting face is fine
Dimension surface layer is stepped up from front to back close to lower hot rolling Roller, speed 1.5m/min, hot rolling Roller pressure, the pressure of the 1st group of hot rolling Roller
Strong is 0.2MPa, and the pressure of the 2nd group of hot rolling Roller is 0.2MPa, and the pressure of the 3rd group of hot rolling Roller is 0.4MPa, the 4th group of hot rolling Roller's
Pressure is 0.6MPa, the pressure of last group of hot rolling Roller is 0.8MPa.Heat treatment makes polyphenylene sulfide fibre partial melting, with poly- third
Alkene nitrile pre-oxidized fibers form bonding point, while fill up the excessive hole in part, and filter structure can be made more to stablize, effectively carried
The intensity of high filtrate, reduces interfibrous gap, and makes dust-collecting face more smooth.
Dipping：The basic forming of pre-oxidized polyacrylonitrile fiber high temperature resistant bag-type dusting filtrate after heat treatment, be into
One step improves its filter efficiency, and impregnation technology is carried out to it and is arranged and high temperature baking processing.It is quality specially to impregnate formula of liquid
Fraction：Ptfe emulsion：8%, melamine resin lotion：6%, water：86%；Foregoing filtrate is put into and has been stirred
Into the maceration extract of uniform state, when ultrasound 1 is small, supersonic frequency 25kHz, temperature is 60 DEG C.
Bakee：Filtrate is sent into ironer after dipping, mangle pick-up is 60%, the preliminary drying 30min under the conditions of 90 DEG C, so
Afterwards 3min is bakeed under the conditions of 160 DEG C.Polytetrafluoroethylene (PTFE) is solidificated in fiber surface by melamine resin, improves fiber
The crude extent on surface, while the tortuous in gap is improved, further improve the filter efficiency of filtrate.So far, polyacrylonitrile
Prepared by pre-oxidized fibers high temperature resistant bag-type dusting filtrate completes.
Correlated performance test is carried out to filtrate made above, ultimate strength and the extension at break of filtrate use GB/
T3923.1-2013《Textile fabric tensile property part 1：The measure of ultimate strength and elongation at break (galley proof method)》Into
After row test, wherein high temperature test carries out in high-temperature cabinet, and sample first is put into high-temperature cabinet, and clamping is good, treat that temperature rises to
200 DEG C, then tested by GB/T 3923.1-2013；Filtrate is to dividing PM0.3, PM0.5, PM1.0, PM3.0 and PM5.0
Level filter efficiency uses GTT TM 047-2017《Fiber filtering classified filtering Efficiency test method》Tested；The powder of filtrate
Dirt dynamic filtration efficiency uses GB/T 6719-2009 Appendix B《Sack cleaner technical requirements》Tested.
After tested, vertically and horizontally it is broken through pre-oxidized polyacrylonitrile fiber high temperature resistant bag-type dusting filtrate manufactured in the present embodiment
Strongly essentially identical, its room temperature longitudinal fracture intensity reaches 1148N/5cm, and cross-breaking strength reaches 1132N/5cm, in 200 DEG C of height
Its fracture strength can retain more than 95% under the conditions of temperature, its high temperature longitudinal fracture intensity reaches 1118N/5cm, and cross-breaking strength reaches
1086N/5cm, the plain polypropylene nitrile pre-oxidized fibers Nomex of relatively the same grammes per square metre improve several times (Fig. 2), with conventional resistance to height
Warm bag-type dusting filtrate approaches, and meets the intensity requirement of bag-type dusting filtrate.
To the filter efficiency of PM0.3, PM0.5, PM1.0, PM3.0 and PM5.0 compared with plain polypropylene nitrile pre-oxidized fibers
Nomex greatly improves, wherein the filter efficiency to PM1.0 is even more to be improved by 83.7% to 95.3% (Fig. 3).
Room temperature dynamic dust-filtering is carried out by GB/T 6719 to pre-oxidized polyacrylonitrile fiber high temperature resistant bag-type dusting filtrate
Performance test and 200 DEG C of high temperature dynamic dust-filtering performance tests, preoxidized polyacrylonitrile prepared by the above-mentioned technique of the results show
Filter efficiency is basically unchanged fibre fire resistant bag-type dusting filtrate under the high temperature conditions；Relatively common pre-oxidized polyacrylonitrile fiber
Nomex, its dust filtration efficiency have brought up to 99.97% by 99.1% or so, while in the case where initial resistance is larger,
The time that resistance is risen to needed for deashing resistance is nearly 2 times (Fig. 4) for plain polypropylene nitrile pre-oxidized fibers Nomex, 30 times
1000Pa cleaning cycles dust-cleaning efficiency can be improved to 99.7% by 88.3%.This explanation prepares poly- through the utility model method
Acrylonitrile pre-oxidized fibers high temperature resistant bag-type dusting filtrate has the mistake of higher compared with plain polypropylene nitrile pre-oxidized fibers Nomex
Efficiency, more preferable deashing property, and longer service life are filtered, can meet the needs of high-temperature bag dust removal filtrate, is fitted
Can be the material cost that pollution control enterprise saves nearly half for high-temperature bag dust removal filtration art.
Embodiment two
As shown in fig. 6, the pre-oxidized polyacrylonitrile fiber high temperature resistant bag-type dusting filtrate of the present embodiment, including it is basic unit 1, logical
Cross needling process and the composite fibre that pre-oxidized polyacrylonitrile fiber and polyphenylene sulfide fibre form is become entangled in into 1 upper and lower surface of basic unit
Dust-collecting face fibrous face layer 2 and non-dust-collecting face fibrous face layer 3, polytetrafluorethylecoatings coatings 4 and polytetrafluoroethylene film 5.Polypropylene
Nitrile pre-oxidized fibers length is 60mm, and polyphenylene sulfide fibre length is 80mm, and pre-oxidized polyacrylonitrile fiber is fine with polyphenylene sulfide
Tie up the ratio 60 of mixing:Between 40.The ratio of the grammes per square metre of dust-collecting face fibrous face layer and the grammes per square metre of non-dust-collecting face fibrous face layer is 6:
4, two total grammes per square metres of fibrous face layer are 500g/m2, make the thickness of dust-collecting face fibrous face layer slightly larger than non-dust-collecting face fibrous face layer
Thickness.Basic unit is the low close aramid fiber woven fabric of one layer of base fabric.Dedusting filtrate in dust-collecting face fibrous face layer 2 and non-is met by infusion process
Polytetrafluoroethylgranule granule is stained with the fiber of dirt face fibrous face layer 3.Polytetrafluoroethylene film 4 is pasted in dust-collecting face fibrous face layer 2.
Preparation method is unlike embodiment one：After baking, a strata tetrafluoro is pasted in dust-collecting face fibrous face layer 2
Vinyl film 5.
Claims (7)
1. a kind of pre-oxidized polyacrylonitrile fiber high temperature resistant bag-type dusting filtrate, it is characterized in that, including basic unit and pass through acupuncture
The composite fibre that pre-oxidized polyacrylonitrile fiber and polyphenylene sulfide fibre form is become entangled in what the upper and lower surface of basic unit was formed by technique
Dust-collecting face fibrous face layer and non-dust-collecting face fibrous face layer, the basic unit include at least one layer of base fabric；The dust-collecting face fiber
The thickness of surface layer is slightly larger than the thickness of non-dust-collecting face fibrous face layer, the dust-collecting face fibrous face layer or non-dust-collecting face fibrous face layer
In the length of polyphenylene sulfide fibre be slightly longer than the length of pre-oxidized polyacrylonitrile fiber.
2. pre-oxidized polyacrylonitrile fiber high temperature resistant bag-type dusting filtrate according to claim 1, it is characterized in that, it is described
Pre-oxidized polyacrylonitrile fiber length is 50-65mm, and the polyphenylene sulfide fibre length is 75-90mm.
3. pre-oxidized polyacrylonitrile fiber high temperature resistant bag-type dusting filtrate according to claim 1, it is characterized in that, it is described
The ratio of the grammes per square metre of dust-collecting face fibrous face layer and the grammes per square metre of non-dust-collecting face fibrous face layer is 6:4, described two fibrous face layers are total
Grammes per square metre is 500-650g/m2。
4. pre-oxidized polyacrylonitrile fiber high temperature resistant bag-type dusting filtrate according to claim 1, it is characterized in that, the base
Cloth includes but not limited to low close aramid fiber woven fabric.
5. pre-oxidized polyacrylonitrile fiber high temperature resistant bag-type dusting filtrate according to claim 4, it is characterized in that, it is described
The warp thread of aramid fiber is identical with weft yarn line density used in low close aramid fiber woven fabric, is 55-75 roots/10cm through close and filling density.
6. according to claim 1-5 any one of them pre-oxidized polyacrylonitrile fiber high temperature resistant bag-type dusting filtrates, its feature
It is to be stained with polytetrafluoroethylgranule granule on the fiber of the dust-collecting face fibrous face layer and non-dust-collecting face fibrous face layer.
7. pre-oxidized polyacrylonitrile fiber high temperature resistant bag-type dusting filtrate according to claim 6, it is characterized in that, it is described to meet
Dirt face fibrous face layer is equipped with least one layer of polytetrafluoroethylene film.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107469465A (en) * | 2017-09-26 | 2017-12-15 | 广州纤维产品检测研究院 | A kind of pre-oxidized polyacrylonitrile fiber high temperature resistant bag-type dusting filtrate and preparation method thereof |
| CN109011841A (en) * | 2018-08-16 | 2018-12-18 | 安徽省汉甲机电设备科技有限公司 | A kind of preparation method of high stability dedusting filtrate |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107469465A (en) * | 2017-09-26 | 2017-12-15 | 广州纤维产品检测研究院 | A kind of pre-oxidized polyacrylonitrile fiber high temperature resistant bag-type dusting filtrate and preparation method thereof |
| CN107469465B (en) * | 2017-09-26 | 2023-03-24 | 广州纤维产品检测研究院 | High-temperature-resistant bag-type dust removal filter material made of pre-oxidized polyacrylonitrile fibers and preparation method of high-temperature-resistant bag-type dust removal filter material |
| CN109011841A (en) * | 2018-08-16 | 2018-12-18 | 安徽省汉甲机电设备科技有限公司 | A kind of preparation method of high stability dedusting filtrate |
| CN109011841B (en) * | 2018-08-16 | 2020-11-03 | 安徽鸿禄滤材有限公司 | Preparation method of high-stability dedusting filter material |
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