CN103691207B - Basalt fibre complex fire resistant filter felt and preparation method thereof - Google Patents
Basalt fibre complex fire resistant filter felt and preparation method thereof Download PDFInfo
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- CN103691207B CN103691207B CN201310703007.5A CN201310703007A CN103691207B CN 103691207 B CN103691207 B CN 103691207B CN 201310703007 A CN201310703007 A CN 201310703007A CN 103691207 B CN103691207 B CN 103691207B
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- basalt fibre
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Abstract
The invention discloses a kind of basalt fibre complex fire resistant filter felt and preparation method thereof, the preparation method of described basalt fibre complex fire resistant filter felt, comprise the steps: that (1), by warp thread polysulfonamide yarns and weft yarn basalt yarn vertical interweaving mutually, make base cloth; (2) basalt fibre is made to basalt fibre layer through air-laid process or mechanical net-forming process; (3) lapping of base cloth above and below stacks basalt fibre layer, preliminary pre-needling; (4) main acupuncture. Basalt fibre complex fire resistant filter felt prepared by the present invention, there is high temperature resistant, chemical resistance and fire-retardant characteristic, and strength retention is higher after dust is peeled off rate and heating in 100 hours, running resistance, lower than 700Pa, is suitable for 350 DEG C of following high-temperature acidic media filtrations.
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 basalt fibre multipleClose high 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 a kind of preparation method of basalt fibre complex fire resistant filter felt. Technology to be solved by this invention is askedTwo of topic is to provide a kind of basalt fibre complex fire resistant filter felt.
Technical problem to be solved by this invention is achieved by the following technical solution:
A preparation method for basalt fibre complex fire resistant filter felt, comprises the steps:
(1) by warp thread polysulfonamide yarns and weft yarn basalt yarn vertical interweaving mutually, make base cloth;
(2) basalt fibre is made to basalt fibre layer through air-laid process or mechanical net-forming process;
(3) lapping of base cloth above and below stacks above-mentioned basalt fibre layer, preliminary pre-needling;
(4) main acupuncture, makes described basalt fibre complex fire resistant filter felt.
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 described basalt fibre complex fire resistant filter felt 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 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, basalt fibre 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 basalt fibre, is a kind of highly stable chemical inert material, itsAcid resistance and alkali resistance are better than glass fibre, and hygroscopicity is lower 10 times than glass fibre. Mechanical property aspect is profoundThe high 50%-100% of strength ratio steel of military rock fiber, than the high 15%-20% of alkali-free glass fibre. Basalt fibreDimension has good high temperature resistant, chemistry-resistant characteristic, 600 DEG C of long-term serviceability temperatures. The product that it is madeProduct can be used for corrosive liquid and high temperature air filtration, as filtering molten aluminium, and steel rolling mill, carbon blackManufactory of factory and so on hot waste water, waste gas filtering.
The present invention also provides a kind of basalt fibre complex fire resistant filter felt, adopts said method preparationForm.
The basalt fibre complex fire resistant filter felt that adopts the present invention to prepare, has high temperature resistant, chemically-resistantProperty and fire-retardant characteristic, and dust peel off rate and 100 hours heating after strength retention higher, operation resistancePower, lower than 700Pa, is suitable for 350 DEG C of following high-temperature acidic media filtrations.
Detailed description of the invention
Embodiment 1
The preparation method of basalt fibre complex fire resistant filter felt, comprises the steps:
(1) by warp thread polysulfonamide yarns with weft yarn basalt 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 basalt fibre through mechanical net-forming process, make basalt fibre layer;
1. shredding: by opener, basalt fibre is carried out to shredding, make it reach fluffy state; 2. combReason: 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 basalt fibre layer, preliminary pre-needling;
(4) main acupuncture, makes described basalt fibre complex fire resistant filter felt.
The basalt fibre complex fire resistant filter felt finally making, is three layers of layer structure, and ground floor isBasalt fibre layer; The second layer is base cloth, and described base cloth is by warp thread polysulfonamide yarns and weft yarn basalt yarnLine is interwoven; The 3rd layer is basalt fibre layer.
Table 1: basalt fibre complex fire resistant filter felt material grammes per square metre table
| Grammes per square metre | |
| Basalt fibre layer (ground floor) | 190g/m2 |
| Base cloth (second layer) | 400g/m2 |
| Basalt fibre layer (the 3rd layer) | 190g/m2 |
Embodiment 2
On the basalt fibre complex fire resistant filter felt basis of preparing at embodiment 1, further, increaseAdd following 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 described basalt fibre complex fire resistant filter felt 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, % | 84 | 81 | 82 | 69 |
| Strength retention after heating in 100 hours, % | 96 | 93 | 94 | 87 |
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 basalt fibre complex fire resistant filter felt, comprises the steps:
(1) by warp thread polysulfonamide yarns and weft yarn basalt yarn vertical interweaving mutually, make base cloth;
(2) basalt fibre is made to basalt fibre layer through air-laid process or mechanical net-forming process;
(3) lapping of base cloth above and below stacks above-mentioned basalt fibre layer, preliminary pre-needling;
(4) main acupuncture, makes described basalt fibre complex fire resistant filter felt;
(5) impregnation process;
(6) preliminary drying, oven dry and high-temperature shaping;
The impregnation process of described step (5) is:
The described basalt fibre complex fire resistant filter felt 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 basalt fibre complex fire resistant filter felt 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. a basalt fibre complex fire resistant filter felt, adopts in claim 1-2 described in any oneMethod is prepared from.
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| CN201310703007.5A CN103691207B (en) | 2013-12-18 | 2013-12-18 | Basalt fibre complex fire resistant filter felt and preparation method thereof |
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| CN103691207B true CN103691207B (en) | 2016-05-11 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104109929A (en) * | 2014-06-27 | 2014-10-22 | 中原工学院 | Basalt fiber chenille quilt fabric |
| CN104532576A (en) * | 2014-12-23 | 2015-04-22 | 李哲 | Processing technology for high-temperature-resistant fabric |
| CN105113254A (en) * | 2015-09-02 | 2015-12-02 | 四川航天五源复合材料有限公司 | Method for preparing basalt fiber flameproof fabric |
| CN110820160A (en) * | 2019-12-20 | 2020-02-21 | 南京杰迈新材料科技有限公司 | Stitch-bonded felt prepared from waste basalt fibers, preparation method thereof and stitch-bonded felt preparation device |
| CN111549666A (en) * | 2020-06-03 | 2020-08-18 | 江苏天龙玄武岩连续纤维股份有限公司 | Fire-resistant stay cable and manufacturing method thereof |
| CN111793983A (en) * | 2020-07-16 | 2020-10-20 | 抚顺天成环保科技有限公司 | After-treatment agent for stroking basalt fiber and fabric thereof and use method |
| 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 |
| CN115161872A (en) * | 2022-08-01 | 2022-10-11 | 山东慧泽智能科技有限公司 | Production process of basalt ultra-long crystal fiber needle-punching non-woven cotton felt |
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Patent Citations (5)
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| CN101032674A (en) * | 2006-03-08 | 2007-09-12 | 东丽纤维研究所（中国）有限公司 | Filtering material of thermal stability and the purpose thereof |
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Effective date of registration: 20180607 Address after: 224400 No. 22, revitalizing East Road, industrial park, sheet Lake Town, Funing County, Yancheng City, Jiangsu Patentee after: YANCHENG WEIMIN CLOTH INDUSTRY Co.,Ltd. Address before: 201111 room 271, thirtieth building, 280 Shuguang Road, Minhang District, Shanghai. Patentee before: SHANGHAI QIUCHENG NEW MATERIAL TECHNOLOGY Co.,Ltd. |
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Granted publication date: 20160511 Termination date: 20211218 |