CN103691205A - Composite high-temperature-resistant melamine fiber filter felt and preparation method thereof - Google Patents
Composite high-temperature-resistant melamine fiber filter felt and preparation method thereof Download PDFInfo
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- CN103691205A CN103691205A CN201310703039.5A CN201310703039A CN103691205A CN 103691205 A CN103691205 A CN 103691205A CN 201310703039 A CN201310703039 A CN 201310703039A CN 103691205 A CN103691205 A CN 103691205A
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Abstract
The invention discloses a composite high-temperature-resistant melamine fiber filter felt and a preparation method thereof. The preparation method for the composite high-temperature-resistant melamine fiber filter felt comprises the following steps: (1) perpendicularly interweaving warp basalt yarns and weft polysulfonamide yarns to produce a piece of base cloth; (2) producing a melamine fiber layer through melamine fibers by adopting an air laying process or mechanical laying process; (3) lapping and laminating the melamine fiber layers on the upper side and the lower side of the base cloth, and primarily prespiking; (4) mainly spiking. The prepared composite high-temperature-resistant melamine fiber filter felt has the characteristics of high temperature resistance, chemical resistance and flame retardance, the dust stripping rate and the strength retention rate after the composite high-temperature-resistant melamine fiber filter felt is heated for 100 hours are relatively high, and the running resistance is lower than 600Pa.
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 melamine fiber 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 melamine fiber complex fire resistant filter felt.Two of technical problem to be solved by this invention is to provide a kind of melamine fiber complex fire resistant filter felt.
Technical problem to be solved by this invention is achieved by the following technical solution:
A preparation method for melamine fiber complex fire resistant filter felt, comprises the steps:
(1) by warp thread basalt yarn and weft yarn polysulfonamide yarns vertical interweaving mutually, make base cloth;
(2) melamine fiber is made to melamine fiber layer through air-laid process or mechanical net-forming process;
(3) lapping of base cloth above and below stacks above-mentioned melamine fiber layer, preliminary pre-needling;
(4) main acupuncture, makes described melamine fiber 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 melamine fiber 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, melamine 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 melamine fiber, claims again Basofil fiber, is that to take melamino-formaldehyde (MF) resin be raw material, a kind of high-performance refractory fiber with three-dimensional netted cross-linked structure of making through spinning technique.This flame-retardant fiber performance is high, heat conductivity is low, good heat stability, can be applied to the fiber in resistance to flame field.
The present invention also provides a kind of melamine fiber complex fire resistant filter felt, adopts said method to be prepared from.
The melamine fiber complex fire resistant filter felt that adopts the present invention to prepare, has high temperature resistant, chemical resistance and fire-retardant characteristic, and dust peel off rate and heating in 100 hours after strength retention higher, running resistance is lower than 600Pa.
The specific embodiment
Embodiment 1
The preparation method of melamine fiber complex fire resistant filter felt, comprises the steps:
(1) by warp thread basalt yarn and weft yarn polysulfonamide yarns 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 melamine fiber through mechanical net-forming process, make melamine fiber layer;
1. shredding: by opener, melamine 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 melamine fiber layer, preliminary pre-needling;
(4) main acupuncture, makes described melamine fiber complex fire resistant filter felt.
The melamine fiber complex fire resistant filter felt finally making, is three layers of layer structure, and ground floor is melamine fiber layer; The second layer is base cloth, and described base cloth is interwoven by warp thread basalt yarn and weft yarn polysulfonamide yarns; The 3rd layer is melamine fiber layer.
Table 1: melamine fiber complex fire resistant filter felt material grammes per square metre table
| ? | Grammes per square metre |
| Melamine fiber layer (ground floor) | 200g/m 2 |
| Base cloth (second layer) | 400g/m 2 |
| Melamine fiber layer (the 3rd layer) | 200g/m 2 |
Embodiment 2
On the melamine fiber 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 melamine fiber 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 | 80 | 82 | 70 |
| Strength retention after heating in 100 hours, % | 96 | 94 | 93 | 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 melamine fiber complex fire resistant filter felt, comprises the steps:
(1) by warp thread basalt yarn and weft yarn polysulfonamide yarns vertical interweaving mutually, make base cloth;
(2) melamine fiber is made to melamine fiber layer through air-laid process or mechanical net-forming process;
(3) lapping of base cloth above and below stacks above-mentioned melamine fiber layer, preliminary pre-needling;
(4) main acupuncture, makes described melamine fiber complex fire resistant filter felt.
2. the preparation method of melamine fiber 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 melamine fiber complex fire resistant filter felt as claimed in claim 2, is characterized in that, the impregnation process of described step (5) is:
The described melamine fiber 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 melamine fiber 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 melamine fiber complex fire resistant filter felt, adopts in claim 1-4 method described in any one to be prepared from.
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| CN201310703039.5A CN103691205B (en) | 2013-12-18 | 2013-12-18 | Melamine fiber complex fire resistant filter felt and preparation method thereof |
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| CN201310703039.5A CN103691205B (en) | 2013-12-18 | 2013-12-18 | Melamine fiber complex fire resistant filter felt and preparation method thereof |
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| CN103691205B CN103691205B (en) | 2016-05-11 |
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| CN104652037A (en) * | 2015-01-14 | 2015-05-27 | 上海特安纶纤维有限公司 | Sulfuryl-containing aromatic high-temperature resistant fiber, non-woven fabric and filter material containing sulfuryl-containing aromatic high-temperature resistant fiber, and preparation methods thereof |
| CN105922682A (en) * | 2016-05-24 | 2016-09-07 | 刘高志 | High-temperature-resistant filter material for heating boiler and preparation method of high-temperature-resistant filter material |
| WO2016181555A1 (en) * | 2015-05-14 | 2016-11-17 | 槌屋ティスコ 株式会社 | Basalt fiber-containing fabric |
| DE102020116689A1 (en) | 2020-06-24 | 2021-12-30 | Thüringisches Institut für Textil- und Kunststoff-Forschung Rudolstadt e.V. | Melamine resin filter fleece |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104652037A (en) * | 2015-01-14 | 2015-05-27 | 上海特安纶纤维有限公司 | Sulfuryl-containing aromatic high-temperature resistant fiber, non-woven fabric and filter material containing sulfuryl-containing aromatic high-temperature resistant fiber, and preparation methods thereof |
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| CN105922682A (en) * | 2016-05-24 | 2016-09-07 | 刘高志 | High-temperature-resistant filter material for heating boiler and preparation method of high-temperature-resistant filter material |
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| DE102020116689A1 (en) | 2020-06-24 | 2021-12-30 | Thüringisches Institut für Textil- und Kunststoff-Forschung Rudolstadt e.V. | Melamine resin filter fleece |
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| CN103691205B (en) | 2016-05-11 |
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Inventor after: Jin Kunming Inventor after: Chen Yuexiong Inventor before: Huang Meirong |
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Effective date of registration: 20170515 Address after: 519125 Guangdong Province, Zhuhai city Doumen District Baijiao town Baijiao Industrial Park Hongqiao Road (factory floor) Patentee after: Zhuhai Zhongya Air Conditioner Fittings Co., Ltd. Address before: Room 271, building 280, Shuguang Road, Shanghai, Minhang District, 201111, China Patentee before: Shanghai Qiucheng New Material Technology Co., Ltd. |
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Granted publication date: 20160511 Termination date: 20181218 |