CN103691207A - High-temperature-resistant basalt fiber composite filtering felt and preparation method thereof - Google Patents
High-temperature-resistant basalt fiber composite filtering felt and preparation method thereof Download PDFInfo
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- CN103691207A CN103691207A CN201310703007.5A CN201310703007A CN103691207A CN 103691207 A CN103691207 A CN 103691207A CN 201310703007 A CN201310703007 A CN 201310703007A CN 103691207 A CN103691207 A CN 103691207A
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Abstract
The invention discloses a high-temperature-resistant basalt fiber composite filtering felt and a preparation method thereof. The preparation method of the high-temperature-resistant basalt fiber composite filtering felt comprises the following steps of (1) mutually vertically interweaving warp polysulfonamide yarns and weft basalt yarns to prepare base cloth; (2) preparing basalt fibers into a basalt fiber layer by using an airflow wet-forming process or mechanical wet-forming process; (3) lapping and overlapping basalt fiber layers on the upper surface and the lower surface of the base cloth, and preliminarily pre-needling; and (4) mainly needling. The high-temperature-resistant basalt fiber composite filtering felt disclosed by the invention has the characteristics of high temperature resistance, chemical resistance and flame retardance, and is suitable for filtering a high-temperature acidic medium being below 350 DEG C; the dust stripping rate and the strength retention rate after the high-temperature-resistant basalt fiber composite filtering felt is heated for 100h are high, and the operation resistance is lower than 700Pa.
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 complex fire resistant filter felt and preparation method thereof.
Background technology
In China, the develop rapidly of electric power, iron and steel, chemistry, cement, waste incineration etc. " high flow rate, maximum discharge, high pollution " industry, to people, created more rich, easily and efficiently life in, the sustainable development of the natural resources of Ye Dui China, the energy, environment has caused serious threat.In the atmosphere pollution of these social industrial discharges, mainly comprise high-temperature flue gas, dust, SOX, NOX etc.If directly entered in atmosphere without improvement, can directly or indirectly have influence on respiratory system, cardiovascular system, central nervous system, immune system of people 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.The current processing for industrial high temperature flue gas, that mainly takes has wet dedusting, electric precipitation, three kinds of methods of bag-type dusting, wherein sack cleaner is all better than wet dedusting and electric precipitation at aspects such as efficiency of dust collection, disposable and long-term investment expense, equipment requirement and performances, after replacing gradually both and occupy main flow industrial dust collector market.The core of sack cleaner is high temperature resistance filtration material, and the performance quality of high temperature resistance filtration material will be directly connected to efficient, reliable and stable, the long-play of deduster.
Increasingly strict along with domestic and international environmental regulation, countries in the world are more and more paid attention to the exploitation of Filters and application.Home and abroad dust arrester installation has inertial dust separator, cyclone dust collectors, wet scrubber, bag filter, electrostatic precipitator etc. multiple, except specific use, bag filter (hereinafter to be referred as bag hose) and the electrostatic filters of adopting, wherein bag hose accounts for 80% left and right more.The critical component of bag hose is filtering material.Filtering material has cotton, hair, synthetic fibers, glass fibre, ceramic fibre, metallic fiber etc. multiple, and 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, as filtering material, use existing half a century.
At present, high-temperature filter material industry has to accept challenges, and notice is transferred to " upgrading " from " increment " and come up, specifically comprise promote filtrate strainability, reduce filtration resistance, improve corrosion-and high-temp-resistant performance, 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 provide a kind of preparation method of basalt fibre complex fire resistant filter felt.Two of technical problem to be solved by this invention 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 floods in dipping emulsion;
Technological parameter: dipping temperature 70-90 ℃, dip time 5-20 minute, controls liquid carrying rate (being pick-up) 50-150%;
Described dipping emulsion, is comprised 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 makes 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 ptfe emulsion is milky white liquid, is the dispersion concentrate under nonionic surface active agent exists after tetrafluoroethylene polymerization, polytetrafluoroethylene (PTFE) solids content 60wt%.Through disperseing the goods after concentrate is processed, there is remarkable chemical stability and remarkable resistance to chemical attack ability, as resistance to strong acid, highly basic, strong oxidizer etc., there is outstanding heat-resisting, cold-resistant and wear resistance, long-term serviceability temperature scope is-200～250 ℃.Also have excellent electrical 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 oil or Dow Corning Corporation
pMX-200 silicone oil.
Described coupling agent is silane coupler.Preferably, described coupling agent is N-β-(aminoethyl)-γ aminopropyl trimethoxysilane and/or 3-mercaptopropyltriethoxysilane.Optimally, described coupling agent is comprised of 10-30 weight portion N-β-(aminoethyl)-γ aminopropyl trimethoxysilane and 10-30 weight portion 3-mercaptopropyltriethoxysilane.
N-β-(aminoethyl)-γ aminopropyl trimethoxysilane, CAS:1760-24-3.Another name: silane coupler KH-900, the external corresponding trade mark: A-1122 (GE); Z-6020 (DOW CORNING); KBM-603 (Japanese SHIN-ETSU HANTOTAI).
3-mercaptopropyltriethoxysilane, CAS:14814-09-6.Another name: silane coupler 580, the external corresponding trade mark: A-1891 (U.S. GE/OSi company) and KBM-803 (Japanese Shin-Etsu Chemial Co., Ltd).
In step (6), described preliminary drying temperature is 100-120 ℃; Bake out temperature is 130-150 ℃; High-temperature shaping temperature is 210-250 ℃.
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 the mixed and disorderly even fibre web of arranging of fiber; 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 and condense upon on lace curtaining by air-flow, forms 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, and its acid resistance and alkali resistance are better than glass fibre, and hygroscopicity is lower 10 times than glass fibre.The high 50%-100% of strength ratio steel of mechanical property aspect basalt fibre, than the high 15%-20% of alkali-free glass fibre.Basalt fibre has good high temperature resistant, chemistry-resistant characteristic, 600 ℃ of long-term serviceability temperatures.Its product of making can be used for corrosive liquid and high temperature air filtration, as filtering molten aluminium, and steel rolling mill, carbon black plant and so on manufactory's hot waste water, waste gas filtering.
The present invention also provides a kind of basalt fibre complex fire resistant filter felt, adopts said method to be prepared from.
The basalt fibre complex fire resistant filter felt that adopts the present invention to prepare, 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 ℃ of following high-temperature acidic media filtrations.
The specific embodiment
Embodiment 1
The preparation method of basalt fibre complex fire resistant filter felt, comprises the steps:
(1) by warp thread polysulfonamide yarns and weft yarn basalt yarn in air-jet loom vertical interweaving mutually, make base cloth; Control warp count: weft count=1:1, base cloth grammes per square metre 400g/m
2.
(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. 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 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 is basalt fibre layer; The second layer is base cloth, and described base cloth is formed by warp thread polysulfonamide yarns and weft yarn basalt yarns 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/m 2 |
| Base cloth (second layer) | 400g/m 2 |
| Basalt fibre layer (the 3rd layer) | 190g/m 2 |
Embodiment 2
On the basalt fibre complex fire resistant filter felt basis of embodiment 1 preparation, further, increase 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, and can make described dipping emulsion.
The described basalt fibre complex fire resistant filter felt that step (4) is made carries out impregnation process, technological parameter: 80 ℃ of dipping temperatures, dip time 10 minutes, controls liquid carrying rate (being pick-up) 100% in above-mentioned dipping emulsion.
(6) preliminary drying, oven dry and high-temperature shaping in framing shaping machine, controlling preliminary drying temperature is 110 ℃; Bake out temperature is 140 ℃; High-temperature shaping temperature is 230 ℃.
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, and 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, and 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, and can make dipping emulsion.
Test case
According to HJ/T324-2006 environmental protection product specification requirement sack cleaner filtrate, to carry out dust and peel off rate and the rear strength retention test of heating in 100 hours, 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 after dust is peeled off rate and heating in 100 hours, strength retention is all greatly improved.
Especially, embodiment 2 compares with embodiment 3-4, coupling agent N-β-(aminoethyl)-γ aminopropyl trimethoxysilane and the composite use of 3-mercaptopropyltriethoxysilane in the dipping emulsion of impregnation process, Synergistic, after dust is peeled off rate and heating in 100 hours, strength retention is all greatly improved.
Claims (5)
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.
2. the preparation method of basalt fibre complex fire resistant filter felt as claimed in claim 1, is characterized in that, also comprises the steps:
(5) impregnation process;
(6) preliminary drying, oven dry and high-temperature shaping.
3. the preparation method of basalt fibre complex fire resistant filter felt as claimed in claim 2, is characterized in that, the impregnation process of described step (5) is:
The described basalt fibre complex fire resistant filter felt that step (4) is made floods in dipping emulsion;
Described dipping emulsion, is comprised 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 is N-β-(aminoethyl)-γ aminopropyl trimethoxysilane and/or 3-mercaptopropyltriethoxysilane, preferably, described coupling agent is comprised of 10-30 weight portion N-β-(aminoethyl)-γ aminopropyl trimethoxysilane and 10-30 weight portion 3-mercaptopropyltriethoxysilane.
4. the preparation method of basalt fibre complex fire resistant filter felt as claimed in claim 2 or claim 3, is characterized in that:
In step (6), described preliminary drying temperature is 100-120 ℃, and bake out temperature is 130-150 ℃, and high-temperature shaping temperature is 210-250 ℃.
5. a basalt fibre complex fire resistant filter felt, adopts in claim 1-4 method described in any one to be prepared from.
Priority Applications (1)
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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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| 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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| CN103691207A true CN103691207A (en) | 2014-04-02 |
| CN103691207B CN103691207B (en) | 2016-05-11 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104109929A (en) * | 2014-06-27 | 2014-10-22 | 中原工学院 | Basalt fiber chenille quilt fabric |
| CN104342929A (en) * | 2014-10-13 | 2015-02-11 | 宏祥新材料股份有限公司 | Production process of basalt gridding cloth |
| 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 |
| CN104342929B (en) * | 2014-10-13 | 2017-01-04 | 宏祥新材料股份有限公司 | The production technology of basalt grid cloth |
| 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 |
| 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 |
| CN112359490A (en) * | 2020-10-27 | 2021-02-12 | 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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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104109929A (en) * | 2014-06-27 | 2014-10-22 | 中原工学院 | Basalt fiber chenille quilt fabric |
| CN104342929A (en) * | 2014-10-13 | 2015-02-11 | 宏祥新材料股份有限公司 | Production process of basalt gridding cloth |
| CN104342929B (en) * | 2014-10-13 | 2017-01-04 | 宏祥新材料股份有限公司 | The production technology of basalt grid cloth |
| 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 |
| 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 |
| CN112359490A (en) * | 2020-10-27 | 2021-02-12 | 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 |
| 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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| CN103691207B (en) | 2016-05-11 |
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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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