CN103706185B - High temperature resistant filter felt of PPS fiber composite and preparation method thereof - Google Patents
High temperature resistant filter felt of PPS fiber composite and preparation method thereof Download PDFInfo
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- CN103706185B CN103706185B CN201310703069.6A CN201310703069A CN103706185B CN 103706185 B CN103706185 B CN 103706185B CN 201310703069 A CN201310703069 A CN 201310703069A CN 103706185 B CN103706185 B CN 103706185B
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- 239000002131 composite material Substances 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 18
- 239000004744 fabric Substances 0.000 claims abstract description 12
- 238000001467 acupuncture Methods 0.000 claims abstract description 4
- 239000000839 emulsion Substances 0.000 claims description 18
- 238000007598 dipping method Methods 0.000 claims description 17
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 9
- 238000005470 impregnation Methods 0.000 claims description 8
- 239000007822 coupling agent Substances 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 7
- 238000007493 shaping process Methods 0.000 claims description 7
- DCQBZYNUSLHVJC-UHFFFAOYSA-N 3-triethoxysilylpropane-1-thiol Chemical compound CCO[Si](OCC)(OCC)CCCS DCQBZYNUSLHVJC-UHFFFAOYSA-N 0.000 claims description 5
- 229920002545 silicone oil Polymers 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 2
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- 239000000428 dust Substances 0.000 abstract description 12
- 238000001914 filtration Methods 0.000 abstract description 8
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 239000000126 substance Substances 0.000 abstract description 7
- 230000014759 maintenance of location Effects 0.000 abstract description 6
- 239000003063 flame retardant Substances 0.000 abstract description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 description 32
- 229920000069 polyphenylene sulfide Polymers 0.000 description 32
- 239000002994 raw material Substances 0.000 description 9
- 239000002585 base Substances 0.000 description 8
- -1 chemistry Substances 0.000 description 7
- 239000004810 polytetrafluoroethylene Substances 0.000 description 7
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical group [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 4
- 229910000077 silane Inorganic materials 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 239000012298 atmosphere Substances 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- PHQOGHDTIVQXHL-UHFFFAOYSA-N n'-(3-trimethoxysilylpropyl)ethane-1,2-diamine Chemical compound CO[Si](OC)(OC)CCCNCCN PHQOGHDTIVQXHL-UHFFFAOYSA-N 0.000 description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000009960 carding Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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- 229920000642 polymer Polymers 0.000 description 2
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- 229920002994 synthetic fiber Polymers 0.000 description 2
- 239000012209 synthetic fiber Substances 0.000 description 2
- UUEWCQRISZBELL-UHFFFAOYSA-N 3-trimethoxysilylpropane-1-thiol Chemical compound CO[Si](OC)(OC)CCCS UUEWCQRISZBELL-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229920000914 Metallic fiber Polymers 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
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- NEHMKBQYUWJMIP-UHFFFAOYSA-N chloromethane Chemical compound ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 description 1
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- 150000002430 hydrocarbons Chemical class 0.000 description 1
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- 239000002245 particle Substances 0.000 description 1
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
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- 229920001296 polysiloxane Polymers 0.000 description 1
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- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- YUYCVXFAYWRXLS-UHFFFAOYSA-N trimethoxysilane Chemical compound CO[SiH](OC)OC YUYCVXFAYWRXLS-UHFFFAOYSA-N 0.000 description 1
- 239000000052 vinegar Substances 0.000 description 1
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- Nonwoven Fabrics (AREA)
Abstract
The invention discloses high temperature resistant filter felt of a kind of PPS fiber composite and preparation method thereof, the preparation method of the high temperature resistant filter felt of described PPS fiber composite, comprise the steps: that (1), by warp thread basalt yarn and weft yarn PPS yarn vertical interweaving mutually, make base cloth; (2) PPS fiber is made to PPS fibrage through air-laid process or mechanical net-forming process; (3) lapping of base cloth above and below stacks PPS fibrage, preliminary pre-needling; (4) main acupuncture. The high temperature resistant filter felt of PPS fiber composite prepared by the present invention, has high temperature resistant, chemical resistance and fire-retardant characteristic, and dust peel off rate and heating in 100 hours after strength retention higher, be applicable to dust removal by filtration in 190-220 DEG C of high-temperature work environment.
Description
Technical field
The present invention relates to a kind of high temperature filtration felt and preparation method thereof, relate in particular to a kind of PPS fiber compositeHigh temperature resistant filter felt and preparation method thereof.
Background technology
In China, " high flow rate, the maximum discharge, high dirty such as electric power, iron and steel, chemistry, cement, waste incinerationDye " industry develop rapidly, created to people more rich, easily and efficiently life in,Also the sustainable development of the natural resources to China, the energy, environment has caused serious threat. These societiesIn the atmosphere pollution of meeting industrial discharge, mainly comprise high-temperature flue gas, dust, SOX, NOX etc. AsFruit directly enters in atmosphere without improvement, can directly or indirectly have influence on people's respiratory system, the heartVascular system, central nervous system, immune system etc., and and then threaten the life security of human body.
The main target of industrial dedusting technology is to control the discharge of pollution sources flue gas particles, minimizing atmosphere pollution.At present for the processing of industrial high temperature flue gas, that mainly takes has wet dedusting, electric precipitation, a bag-type dustingThree kinds of methods, wherein sack cleaner is at efficiency of dust collection, disposable and long-term investment expense, equipment requirementAll be better than wet dedusting and electric precipitation with the aspect such as performance, after replacing gradually both and occupy main flow industryDeduster market. The core of sack cleaner is high temperature resistance filtration material, and the performance of high temperature resistance filtration material is good and bad by straightConnect efficient, reliable and stable, the long-play that are related to deduster.
Increasingly strict along with domestic and international environmental regulation, countries in the world to the exploitation of Filters and application moreMore pay attention to. Home and abroad dust arrester installation has inertial dust separator, cyclone dust collectors, wet scrubber, bagFormula filter, electrostatic precipitator etc. are multiple, except specific use, adopt bag filter (letter below moreClaim bag hose) and electrostatic filter, wherein bag hose accounts for 80% left and right. The critical component of bag hose wasFiltering material. Filtering material has cotton, hair, synthetic fibers, glass fibre, ceramic fibre, metallic fiber etc.Multiple, most widely used is glass fibre and synthetic fibers. Glass fibre because temperature tolerance is high, corrosion-resistant,Smooth surface, dust peeling property and good stability of the dimension, use existing half a century as filtering material.
At present, high-temperature filter material industry has to accept challenges, and notice is transferred to " upgrading " from " increment "Come up, specifically comprise promote filtrate strainability, reduce filtration resistance, improve corrosion-and high-temp-resistantCan, increase service life.
Summary of the invention
For above shortcomings in prior art, one of technical problem to be solved by this invention is to carryFor the preparation method of the high temperature resistant filter felt of a kind of PPS fiber composite. Technical problem to be solved by this inventionTwo be to provide the high temperature resistant filter felt of a kind of PPS fiber composite.
Technical problem to be solved by this invention is achieved by the following technical solution:
A preparation method for the high temperature resistant filter felt of PPS fiber composite, comprises the steps:
(1) by warp thread basalt yarn and weft yarn PPS yarn vertical interweaving mutually, make base cloth;
(2) PPS fiber is made to PPS fibrage through air-laid process or mechanical net-forming process;
(3) lapping of base cloth above and below stacks above-mentioned PPS fibrage, preliminary pre-needling;
(4) main acupuncture, makes the high temperature resistant filter felt of described PPS fiber composite.
Further, can also comprise:
(5) impregnation process:
(6) preliminary drying, oven dry and high-temperature shaping.
The impregnation process of step (5) is specially:
The high temperature resistant filter felt of described PPS fiber composite that step (4) is made soaks in dipping emulsionStain;
Technological parameter: dipping temperature 70-90 DEG C, dip time 5-20 minute, controls liquid carrying rate and (rollRemaining rate) 50-150%;
Described dipping emulsion, is made up of following materials by weight percentage: 10-14% ptfe emulsion,1-3% silicone oil, 0.2-0.6% coupling agent, surplus are water. Under normal temperature and pressure, each raw material is uniformly mixed,Can make described dipping emulsion.
In described ptfe emulsion, polytetrafluoroethylene content is 55-65wt%. Ptfe emulsion,Can select the ptfe emulsion of the trade mark TE3859 of du pont company. TE3859 polytetrafluoroethylene (PTFE)Emulsion is milky white liquid, is the dispersion under nonionic surface active agent exists after tetrafluoroethylene polymerizationConcentrate, polytetrafluoroethylene (PTFE) solids content 60wt%. Through disperseing concentrate goods after treatment, there is ZhuoChemical stability more and remarkable resistance to chemical attack ability, as resistance to strong acid, highly basic, strong oxidizer etc.,Have outstanding heat-resisting, cold-resistant and wear resistance, long-term serviceability temperature scope is-200～250 DEG C. Also have excellentElectrical insulating property, and be not subject to the impact of temperature and frequency.
Described silicone oil can be: chain alkyl end-blocking silicone oil DK-285, long-chain alkyl benzene SE2203 silicone oilOr the Xiameter of Dow Corning CorporationPMX-200 silicone oil.
Described coupling agent is silane coupler. Preferably, described coupling agent is N-β-(aminoethyl)-γ ammonia thirdBase trimethoxy silane and/or 3-mercaptopropyltriethoxysilane. Optimally, described coupling agent is by 10-30Weight portion N-β-(aminoethyl)-γ aminopropyl trimethoxysilane and 10-30 weight portion 3-mercapto propyl group three ethoxiesBase silane composition.
N-β-(aminoethyl)-γ aminopropyl trimethoxysilane, CAS:1760-24-3. Another name: silane is evenConnection agent KH-900, the external corresponding trade mark: A-1122 (GE); Z-6020 (DOW CORNING); KBM-603 (dayThis SHIN-ETSU HANTOTAI).
3-mercaptopropyltriethoxysilane, CAS:14814-09-6. Another name: silane coupler 580, stateThe outer corresponding trade mark: A-1891 (GE/OSi company of the U.S.) and KBM-803 (Japanese SHIN-ETSU HANTOTAI chemical industry strain formulaCommercial firm).
In step (6), described preliminary drying temperature is 100-120 DEG C; Bake out temperature is 130-150 DEG C; HighTemperature setting temperature is 210-250 DEG C.
In step (6), described preliminary drying, oven dry and high-temperature shaping complete by framing shaping machine.
Air-laid process described in step (2), is state of the art, is specifically as follows:
1. fiber is opened bag; 2. fiber opening-employing air flow delivery fiber, to form, fiber is mixed and disorderly to be arrangedEvenly fibre web; 3. fiber mixes; 4. fibre impurity-removing; 5. fiber feeds the cylinder of high speed rotary after mixing;6. fibre shedding; 7. air-flow conveying fiber is condensed into fleece; 8. output fiber net-evenly carried by air-flowCondense upon on lace curtaining, form distributed in three dimensions, in length and breadth to the little fleece of powerful difference.
Mechanical net-forming process described in step (2), is state of the art, is specifically as follows:
1. shredding: by opener, PPS fiber is carried out to shredding, make it reach fluffy state;
2. combing: send into carding machine and be carded to fibre web;
3. lapping: use lapping machine to carry out lapping.
In the present invention, described PPS fiber, formal name used at school: polyphenylene sulfide, be a kind of with phenyl ring in contrapositionUpper connection sulphur atom and form the polymer of large molecular rigidity main chain. PPS strand is through contraposition by phenyl ringSulphur atom alternately connects and composes, and contains rigidity, stable on heating phenylene and flexible heat resistance in molecular structureThioether bond, and the rigid structure of phenyl ring couples together by flexible thioether bond, therefore fiber is compared with conventional fineDimension has better heat resistance and heat endurance. It at high temperature has good intensity, rigidity and resistance toFatigability can use continuously at 200～240 DEG C, more stable in the air lower than 400 DEG C or nitrogen,Basic zero gravity loss. Its chemical resistance and the polytetrafluoroethylene PTFE phase of being known as " kings of plastics "Closely, can resist the erosion of the chemicals such as acid, alkali, chlorocarbon, hydro carbons, ketone, alcohol, vinegar, at 200 DEG CBe insoluble to any chemical solvent. Have excellent fire resistance, limited oxygen index LOI is 34% simultaneously,On flame, can burn, but can not drip, and certainly put out from fire, the rate of being fuming is lower than halogen polymer.
The present invention also provides a kind of PPS fiber composite high temperature resistant filter felt, adopt said method preparation andBecome.
The high temperature resistant filter felt of PPS fiber composite that adopts the present invention to prepare, has high temperature resistant, chemical resistanceWith fire-retardant characteristic, and dust is peeled off rate and the rear strength retention of heating in 100 hours is higher, is applicable toDust removal by filtration in 190-220 DEG C of high-temperature work environment.
Detailed description of the invention
Embodiment 1
The preparation method of the high temperature resistant filter felt of PPS fiber composite, comprises the steps:
(1) by warp thread basalt yarn with weft yarn PPS yarn in air-jet loom vertical interweaving mutually, systemBecome base cloth; Control warp count: weft count=1:1, base cloth grammes per square metre 400g/m2。
(2) by PPS fiber through mechanical net-forming process, make PPS fibrage;
1. shredding: by opener, PPS fiber is carried out to shredding, make it reach fluffy state; 2. combing:Send into carding machine and be carded to fibre web; 3. lapping: use lapping machine to carry out lapping.
(3) lapping of base cloth above and below stacks above-mentioned PPS fibrage, preliminary pre-needling;
(4) main acupuncture, makes the high temperature resistant filter felt of described PPS fiber composite.
The high temperature resistant filter felt of PPS fiber composite finally making, is three layers of layer structure, and ground floor is PPSFibrage; The second layer is base cloth, described base cloth by warp thread basalt yarn and weft yarn PPS yarns interwoven andBecome; The 3rd layer is PPS fibrage.
The high temperature resistant filter felt material of table 1:PPS fiber composite grammes per square metre table
| Grammes per square metre | |
| PPS fibrage (ground floor) | 200g/m2 |
| Base cloth (second layer) | 400g/m2 |
| PPS fibrage (the 3rd layer) | 200g/m2 |
Embodiment 2
On the high temperature resistant filter felt of the PPS fiber composite basis of preparing at embodiment 1, further, increaseFollowing step:
(5) impregnation process:
By table 2, corresponding embodiment 2 takes each raw material, under normal temperature and pressure, each raw material is uniformly mixed,Can make described dipping emulsion.
The high temperature resistant filter felt of described PPS fiber composite that step (4) is made, at above-mentioned dipping emulsionIn carry out impregnation process, technological parameter: 80 DEG C of dipping temperatures, dip time 10 minutes, control band liquidRate (being pick-up) 100%.
(6) preliminary drying, oven dry and high-temperature shaping in framing shaping machine, controlling preliminary drying temperature is 110 DEG C;Bake out temperature is 140 DEG C; High-temperature shaping temperature is 230 DEG C.
Table 2 dipping emulsion formula table unit: kilogram
Embodiment 3
Embodiment 3 is substantially the same manner as Example 2, and unique difference is: dipping emulsion formula is different.
By table 2, corresponding embodiment 3 takes each raw material, under normal temperature and pressure, each raw material is uniformly mixed,Can make dipping emulsion.
Embodiment 4
Embodiment 4 is substantially the same manner as Example 2, and unique difference is: dipping emulsion formula is different.
By table 2, corresponding embodiment 4 takes each raw material, under normal temperature and pressure, each raw material is uniformly mixed,Can make dipping emulsion.
Embodiment 5
Embodiment 5 is substantially the same manner as Example 2, and unique difference is: dipping emulsion formula is different.
By table 2, corresponding embodiment 5 takes each raw material, under normal temperature and pressure, each raw material is uniformly mixed,Can make dipping emulsion.
Test case
According to HJ/T324-2006 environmental protection product technical requirement sack cleaner filtrate, carry out powderAfter dirt is peeled off rate and heating in 100 hours, strength retention is tested, and concrete data see the following form.
Table 3: test data table
| Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | |
| Dust is peeled off rate, % | 86 | 82 | 84 | 72 |
| Strength retention after heating in 100 hours, % | 94 | 91 | 92 | 85 |
Embodiment 2-4 compares with embodiment 5, increases impregnation process, and dust is peeled off rate and 100 hoursAfter heating, strength retention is all greatly improved.
Especially, embodiment 2 compares with embodiment 3-4, coupling agent in the dipping emulsion of impregnation processN-β-(aminoethyl)-γ aminopropyl trimethoxysilane and the composite use of 3-mercaptopropyltriethoxysilane, associationSame synergy, after dust is peeled off rate and heating in 100 hours, strength retention is all greatly improved.
Claims (3)
1. a preparation method for the high temperature resistant filter felt of PPS fiber composite, comprises the steps:
(1) by warp thread basalt yarn and weft yarn PPS yarn vertical interweaving mutually, make base cloth;
(2) PPS fiber is made to PPS fibrage through air-laid process or mechanical net-forming process;
(3) lapping of base cloth above and below stacks above-mentioned PPS fibrage, preliminary pre-needling;
(4) main acupuncture, makes the high temperature resistant filter felt of described PPS fiber composite;
(5) impregnation process;
(6) preliminary drying, oven dry and high-temperature shaping;
The impregnation process of described step (5) is:
The high temperature resistant filter felt of described PPS fiber composite that step (4) is made soaks in dipping emulsionStain;
Described dipping emulsion, is made up of following materials by weight percentage: 10-14% ptfe emulsion,1-3% silicone oil, 0.2-0.6% coupling agent, surplus are water;
Described coupling agent by 10-30 weight portion N-β-(aminoethyl)-γ aminopropyl trimethoxysilane and10-30 weight portion 3-mercaptopropyltriethoxysilane composition.
2. the preparation method of the high temperature resistant filter felt of PPS fiber composite as claimed in claim 1, its spyLevy and be:
In step (6), described preliminary drying temperature is 100-120 DEG C, and bake out temperature is 130-150 DEG C, heightTemperature setting temperature is 210-250 DEG C.
3. the high temperature resistant filter felt of PPS fiber composite, adopts in claim 1-2 square described in any oneMethod is prepared from.
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| CN103768865B (en) * | 2014-02-24 | 2015-05-06 | 南通大学 | Production method for dust filtering material with fly ash filtering aid |
| CN104389178B (en) * | 2014-09-19 | 2016-09-07 | 太仓苏纶纺织化纤有限公司 | The modified polyphenyl thioether of a kind of basalt fibre filter material/polytetrafluoroethylene (PTFE) layered coated method |
| CN104233803A (en) * | 2014-09-19 | 2014-12-24 | 太仓苏纶纺织化纤有限公司 | Dip coating preparation method of modified basalt fiber/polyphenylene sulfide composite filter material |
| CN104532576A (en) * | 2014-12-23 | 2015-04-22 | 李哲 | Processing technology for high-temperature-resistant fabric |
| CN104652037B (en) * | 2015-01-14 | 2018-01-05 | 上海特安纶纤维有限公司 | Aromatic High-temperature Resistant Fibers containing sulfuryl, adhesive-bonded fabric, filtering material and its manufacture method comprising the fiber |
| CN105854419B (en) * | 2016-05-11 | 2018-03-23 | 安徽元琛环保科技股份有限公司 | A kind of production method of electret composite filtering material |
| CN105922682B (en) * | 2016-05-24 | 2017-12-12 | 温岭市创嘉信息科技有限公司 | A kind of fire resistant filter material for heating boiler and preparation method thereof |
| CN106731222B (en) * | 2017-01-23 | 2019-04-16 | 西安工程大学 | A kind of basalt double-layer base fabric needle thorn composite filtering material and preparation method thereof |
| CN112359490B (en) * | 2020-10-27 | 2021-07-13 | 安徽中电环保材料股份有限公司 | Preparation method of PTFE and PPS composite high-temperature-resistant filter material |
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