CN105922682B - A kind of fire resistant filter material for heating boiler and preparation method thereof - Google Patents

A kind of fire resistant filter material for heating boiler and preparation method thereof Download PDF

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Publication number
CN105922682B
CN105922682B CN201610351411.4A CN201610351411A CN105922682B CN 105922682 B CN105922682 B CN 105922682B CN 201610351411 A CN201610351411 A CN 201610351411A CN 105922682 B CN105922682 B CN 105922682B
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pps
isopropyl titanate
dipping
dialkyl diphenylamine
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CN105922682A (en
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郭嘉川
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Shandong Non De Filtration Technology Co ltd
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Wenling Chuangjia Information Science & Technology Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
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    • B32B19/00—Layered products comprising a layer of natural mineral fibres or particles, e.g. asbestos, mica
    • B32B19/06—Layered products comprising a layer of natural mineral fibres or particles, e.g. asbestos, mica next to a fibrous or filamentary layer
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    • B32—LAYERED PRODUCTS
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    • B32B27/00—Layered products comprising a layer of synthetic resin
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    • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/242—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads inorganic, e.g. basalt
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    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
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    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
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    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
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    • D06B3/10—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics
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    • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
    • D06M13/325—Amines
    • D06M13/328—Amines the amino group being bound to an acyclic or cycloaliphatic carbon atom
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    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
    • D06M13/325—Amines
    • D06M13/335—Amines having an amino group bound to a carbon atom of a six-membered aromatic ring
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    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
    • D06M13/402—Amides imides, sulfamic acids
    • D06M13/419—Amides having nitrogen atoms of amide groups substituted by hydroxyalkyl or by etherified or esterified hydroxyalkyl groups
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    • D06M13/50—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with organometallic compounds; with organic compounds containing boron, silicon, selenium or tellurium atoms
    • D06M13/503—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with organometallic compounds; with organic compounds containing boron, silicon, selenium or tellurium atoms without bond between a carbon atom and a metal or a boron, silicon, selenium or tellurium atom
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    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/244—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons
    • D06M15/256—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons containing fluorine
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    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
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    • B32—LAYERED PRODUCTS
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    • B32B2262/10—Inorganic fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
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    • D10B2331/30—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polycondensation products not covered by indexing codes D10B2331/02 - D10B2331/14
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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

The invention discloses a kind of fire resistant filter material for heating boiler and preparation method thereof, it is prepared via a method which to form：Warp thread basalt yam and weft yarn PPS yarns are mutually perpendicular to interweave, base fabric is made；PPS fibrous layers are made through air-laid process or mechanical net-forming process in PPS fibers；The lapping of base fabric above and below stacks above-mentioned PPS fibrous layers, preliminary pre-needling；Main acupuncture, is made filtering material；Filtering material made of step S4 is subjected to impregnation, impregnated in dipping emulsion；Preliminary drying, drying and high-temperature shaping.Filtering material provided by the invention has high temperature resistant, chemical resistance and fire-retardant characteristic, and strength retention is higher after dust-cleaning efficiency and heating in 100 hours, the dust removal by filtration suitable for high-temperature work environment, is suitable in heating boiler.This may be relevant with the weight ratio of isopropyl titanate in dipping emulsion and dialkyl diphenylamine, and the weight ratio of isopropyl titanate and dialkyl diphenylamine is 6~8:When 1, filtering material best performance.

Description

A kind of fire resistant filter material for heating boiler and preparation method thereof
Technical field
The present invention relates to heating boiler material, and in particular to a kind of fire resistant filter material and its system for heating boiler Preparation Method.
Background technology
The main target of industrial dedusting technology is the discharge of control pollution sources flue gas particles, reduces atmosphere pollution.Pin at present Processing to industrial high temperature flue gas, that mainly takes has three kinds of wet dedusting, electric precipitation, bag-type dusting methods, and wherein pocket type removes Dirt device is superior to wet dedusting in efficiency of dust collection, disposable and long-term investment expense, equipment requirement and performance etc. and electricity removes Dirt, will gradually substitution after both and occupy mainstream industry deduster market.The core of sack cleaner is high temperature resistance filtration material, resistance to height The performance quality of warm filtrate will be directly connected to the efficient, reliable and stable of deduster, long-play.
The filtering material resistance to elevated temperatures of existing heating boiler is preferable not enough.
The content of the invention
It is an object of the invention to provide a kind of fire resistant filter material for heating boiler and preparation method thereof.
The above-mentioned purpose of the present invention is achieved by following technical scheme：
A kind of fire resistant filter material for heating boiler, it is prepared via a method which to form：
Step S1, warp thread basalt yam and weft yarn PPS yarns are mutually perpendicular to interweave, base fabric is made；
Step S2, PPS fibrous layers are made through air-laid process or mechanical net-forming process in PPS fibers；
Step S3, the lapping of base fabric above and below stack above-mentioned PPS fibrous layers, preliminary pre-needling；
Step S4, main acupuncture, is made filtering material；
Step S5, filtering material made of step S4 is subjected to impregnation, impregnated in dipping emulsion；
Step S6, preliminary drying, drying and high-temperature shaping；
Wherein, the dipping emulsion is prepared by the raw material of following parts by weight：PTFE emulsion, 65~75 parts；12 Alkyl dimethyl tertiary amide, 4~6 parts；N- hydroxymethylstear amides, 6~8 parts；Methyl-silicone oil, 20~30 parts；Isopropyl titanate and The weight ratio of totally 7~9 parts of dialkyl diphenylamine, isopropyl titanate and dialkyl diphenylamine is 6~8:1.
Further, the dipping emulsion is prepared by the raw material of following parts by weight：PTFE emulsion, 70 parts；12 Alkyl dimethyl tertiary amide, 5 parts；N- hydroxymethylstear amides, 7 parts；Methyl-silicone oil, 25 parts；Isopropyl titanate and dialkyl group hexichol The weight ratio of totally 8 parts of amine, isopropyl titanate and dialkyl diphenylamine is 7:1.
Further, the dipping emulsion is prepared by the raw material of following parts by weight：PTFE emulsion, 65 parts；12 Alkyl dimethyl tertiary amide, 4 parts；N- hydroxymethylstear amides, 6 parts；Methyl-silicone oil, 20 parts；Isopropyl titanate and dialkyl group hexichol The weight ratio of totally 7 parts of amine, isopropyl titanate and dialkyl diphenylamine is 6:1.
Further, the dipping emulsion is prepared by the raw material of following parts by weight：PTFE emulsion, 75 parts；12 Alkyl dimethyl tertiary amide, 6 parts；N- hydroxymethylstear amides, 8 parts；Methyl-silicone oil, 30 parts；Isopropyl titanate and dialkyl group hexichol The weight ratio of totally 9 parts of amine, isopropyl titanate and dialkyl diphenylamine is 8:1.
Further, 80~90 DEG C of dipping temperature in the impregnation of the step S5, dip time 10~20 minutes, control Liquid carrying rate processed is 30~40%.
Advantages of the present invention：
Filtering material provided by the invention has high temperature resistant, chemical resistance and a fire-retardant characteristic, and dust-cleaning efficiency and Strength retention is higher after heating in 100 hours, the dust removal by filtration suitable for high-temperature work environment, is suitable in heating boiler.
Embodiment
The essentiality content of the present invention is further illustrated with reference to embodiment, but present invention protection model is not limited with this Enclose.Although being explained in detail with reference to preferred embodiment to the present invention, it will be understood by those within the art that, can be right Technical scheme is modified or equivalent substitution, without departing from the spirit and scope of technical solution of the present invention.
PTFE emulsion, also known as ptfe emulsion, from du pont company trade mark TE3859 polytetrafluoroethylene (PTFE) breast Liquid (polytetrafluoroethylene (PTFE) solid content is 60wt%).The silicone oil, from Dow Corning Corporation's PMX-200 silicone oil.PPS, polyphenylene sulfide Abbreviation.PPS yarns select the PPS yarns of Yizheng Jin Tai nonwoven fabric of synthetic fibre Co., Ltd production.Basalt yam, from Haining The basalt yam of An Jie composites Co., Ltd.
Embodiment 1：Preparation for the fire resistant filter material of heating boiler
Raw material weight part ratio in dipping emulsion：
PTFE emulsion, 70 parts；Dodecyl Dimethyl Amine, 5 parts；N- hydroxymethylstear amides, 7 parts；Methyl-silicone oil, 25 Part；The weight ratio of totally 8 parts of isopropyl titanate and dialkyl diphenylamine, isopropyl titanate and dialkyl diphenylamine is 7:1.
Preparation method：
Step S1, warp thread basalt yam and weft yarn PPS yarns are mutually perpendicular to interweave in air-jet loom, base fabric is made； Wherein, warp count:Weft count=1:1, base fabric grammes per square metre 400g/m2；
Step S2, by PPS fibers through mechanical net-forming process, PPS fibrous layers are made；
1. shredding：Shredding is carried out to PPS fibers by opener, reaches soft fluffy state；2. comb：It is sent into carding machine It is combed into fibre web；3. lapping：Lapping is carried out using lapping machine.
Step S3, the lapping of base fabric above and below stack above-mentioned PPS fibrous layers, preliminary pre-needling；
Step S4, main acupuncture, is made filtering material；
Step S5, filtering material made of step S4 is subjected to impregnation, impregnated in dipping emulsion；Dipping temperature 85 DEG C, dip time 15 minutes, it is 35% to control liquid carrying rate；
Step S6, preliminary drying (110 DEG C), drying (140 DEG C) and high-temperature shaping (230 DEG C).
The filtering material, is three laminates, and first layer is PPS fibrous layers (200g/m2)；The second layer is base fabric (400g/m2), the base fabric is formed by warp thread basalt yam and weft yarn PPS yarns interwovens；Third layer is PPS fibrous layers (200g/m2)。
Embodiment 2：Preparation for the fire resistant filter material of heating boiler
Raw material weight part ratio in dipping emulsion：
PTFE emulsion, 65 parts；Dodecyl Dimethyl Amine, 4 parts；N- hydroxymethylstear amides, 6 parts；Methyl-silicone oil, 20 Part；The weight ratio of totally 7 parts of isopropyl titanate and dialkyl diphenylamine, isopropyl titanate and dialkyl diphenylamine is 6:1.
Preparation method：
Step S1, warp thread basalt yam and weft yarn PPS yarns are mutually perpendicular to interweave in air-jet loom, base fabric is made； Wherein, warp count:Weft count=1:1, base fabric grammes per square metre 400g/m2；
Step S2, by PPS fibers through mechanical net-forming process, PPS fibrous layers are made；
1. shredding：Shredding is carried out to PPS fibers by opener, reaches soft fluffy state；2. comb：It is sent into carding machine It is combed into fibre web；3. lapping：Lapping is carried out using lapping machine.
Step S3, the lapping of base fabric above and below stack above-mentioned PPS fibrous layers, preliminary pre-needling；
Step S4, main acupuncture, is made filtering material；
Step S5, filtering material made of step S4 is subjected to impregnation, impregnated in dipping emulsion；Dipping temperature 85 DEG C, dip time 15 minutes, it is 35% to control liquid carrying rate；
Step S6, preliminary drying (110 DEG C), drying (140 DEG C) and high-temperature shaping (230 DEG C).
The filtering material, is three laminates, and first layer is PPS fibrous layers (200g/m2)；The second layer is base fabric (400g/m2), the base fabric is formed by warp thread basalt yam and weft yarn PPS yarns interwovens；Third layer is PPS fibrous layers (200g/m2)。
Embodiment 3：Preparation for the fire resistant filter material of heating boiler
Raw material weight part ratio in dipping emulsion：
PTFE emulsion, 75 parts；Dodecyl Dimethyl Amine, 6 parts；N- hydroxymethylstear amides, 8 parts；Methyl-silicone oil, 30 Part；The weight ratio of totally 9 parts of isopropyl titanate and dialkyl diphenylamine, isopropyl titanate and dialkyl diphenylamine is 8:1.
Preparation method：
Step S1, warp thread basalt yam and weft yarn PPS yarns are mutually perpendicular to interweave in air-jet loom, base fabric is made； Wherein, warp count:Weft count=1:1, base fabric grammes per square metre 400g/m2；
Step S2, by PPS fibers through mechanical net-forming process, PPS fibrous layers are made；
1. shredding：Shredding is carried out to PPS fibers by opener, reaches soft fluffy state；2. comb：It is sent into carding machine It is combed into fibre web；3. lapping：Lapping is carried out using lapping machine.
Step S3, the lapping of base fabric above and below stack above-mentioned PPS fibrous layers, preliminary pre-needling；
Step S4, main acupuncture, is made filtering material；
Step S5, filtering material made of step S4 is subjected to impregnation, impregnated in dipping emulsion；Dipping temperature 85 DEG C, dip time 15 minutes, it is 35% to control liquid carrying rate；
Step S6, preliminary drying (110 DEG C), drying (140 DEG C) and high-temperature shaping (230 DEG C).
The filtering material, is three laminates, and first layer is PPS fibrous layers (200g/m2)；The second layer is base fabric (400g/m2), the base fabric is formed by warp thread basalt yam and weft yarn PPS yarns interwovens；Third layer is PPS fibrous layers (200g/m2)。
Embodiment 4：Preparation for the fire resistant filter material of heating boiler
Raw material weight part ratio in dipping emulsion：
PTFE emulsion, 70 parts；Dodecyl Dimethyl Amine, 5 parts；N- hydroxymethylstear amides, 7 parts；Methyl-silicone oil, 25 Part；The weight ratio of totally 8 parts of isopropyl titanate and dialkyl diphenylamine, isopropyl titanate and dialkyl diphenylamine is 6:1.
Preparation method：
Step S1, warp thread basalt yam and weft yarn PPS yarns are mutually perpendicular to interweave in air-jet loom, base fabric is made； Wherein, warp count:Weft count=1:1, base fabric grammes per square metre 400g/m2；
Step S2, by PPS fibers through mechanical net-forming process, PPS fibrous layers are made；
1. shredding：Shredding is carried out to PPS fibers by opener, reaches soft fluffy state；2. comb：It is sent into carding machine It is combed into fibre web；3. lapping：Lapping is carried out using lapping machine.
Step S3, the lapping of base fabric above and below stack above-mentioned PPS fibrous layers, preliminary pre-needling；
Step S4, main acupuncture, is made filtering material；
Step S5, filtering material made of step S4 is subjected to impregnation, impregnated in dipping emulsion；Dipping temperature 85 DEG C, dip time 15 minutes, it is 35% to control liquid carrying rate；
Step S6, preliminary drying (110 DEG C), drying (140 DEG C) and high-temperature shaping (230 DEG C).
The filtering material, is three laminates, and first layer is PPS fibrous layers (200g/m2)；The second layer is base fabric (400g/m2), the base fabric is formed by warp thread basalt yam and weft yarn PPS yarns interwovens；Third layer is PPS fibrous layers (200g/m2)。
Embodiment 5：Preparation for the fire resistant filter material of heating boiler
Raw material weight part ratio in dipping emulsion：
PTFE emulsion, 70 parts；Dodecyl Dimethyl Amine, 5 parts；N- hydroxymethylstear amides, 7 parts；Methyl-silicone oil, 25 Part；The weight ratio of totally 8 parts of isopropyl titanate and dialkyl diphenylamine, isopropyl titanate and dialkyl diphenylamine is 8:1.
Preparation method：
Step S1, warp thread basalt yam and weft yarn PPS yarns are mutually perpendicular to interweave in air-jet loom, base fabric is made； Wherein, warp count:Weft count=1:1, base fabric grammes per square metre 400g/m2；
Step S2, by PPS fibers through mechanical net-forming process, PPS fibrous layers are made；
1. shredding：Shredding is carried out to PPS fibers by opener, reaches soft fluffy state；2. comb：It is sent into carding machine It is combed into fibre web；3. lapping：Lapping is carried out using lapping machine.
Step S3, the lapping of base fabric above and below stack above-mentioned PPS fibrous layers, preliminary pre-needling；
Step S4, main acupuncture, is made filtering material；
Step S5, filtering material made of step S4 is subjected to impregnation, impregnated in dipping emulsion；Dipping temperature 85 DEG C, dip time 15 minutes, it is 35% to control liquid carrying rate；
Step S6, preliminary drying (110 DEG C), drying (140 DEG C) and high-temperature shaping (230 DEG C).
The filtering material, is three laminates, and first layer is PPS fibrous layers (200g/m2)；The second layer is base fabric (400g/m2), the base fabric is formed by warp thread basalt yam and weft yarn PPS yarns interwovens；Third layer is PPS fibrous layers (200g/m2)。
Embodiment 6：The weight ratio of comparative example, isopropyl titanate and dialkyl diphenylamine is 5:1
Raw material weight part ratio in dipping emulsion：
PTFE emulsion, 70 parts；Dodecyl Dimethyl Amine, 5 parts；N- hydroxymethylstear amides, 7 parts；Methyl-silicone oil, 25 Part；The weight ratio of totally 8 parts of isopropyl titanate and dialkyl diphenylamine, isopropyl titanate and dialkyl diphenylamine is 5:1.
Preparation method：
Step S1, warp thread basalt yam and weft yarn PPS yarns are mutually perpendicular to interweave in air-jet loom, base fabric is made； Wherein, warp count:Weft count=1:1, base fabric grammes per square metre 400g/m2；
Step S2, by PPS fibers through mechanical net-forming process, PPS fibrous layers are made；
1. shredding：Shredding is carried out to PPS fibers by opener, reaches soft fluffy state；2. comb：It is sent into carding machine It is combed into fibre web；3. lapping：Lapping is carried out using lapping machine.
Step S3, the lapping of base fabric above and below stack above-mentioned PPS fibrous layers, preliminary pre-needling；
Step S4, main acupuncture, is made filtering material；
Step S5, filtering material made of step S4 is subjected to impregnation, impregnated in dipping emulsion；Dipping temperature 85 DEG C, dip time 15 minutes, it is 35% to control liquid carrying rate；
Step S6, preliminary drying (110 DEG C), drying (140 DEG C) and high-temperature shaping (230 DEG C).
The filtering material, is three laminates, and first layer is PPS fibrous layers (200g/m2)；The second layer is base fabric (400g/m2), the base fabric is formed by warp thread basalt yam and weft yarn PPS yarns interwovens；Third layer is PPS fibrous layers (200g/m2)。
Embodiment 7：The weight ratio of comparative example, isopropyl titanate and dialkyl diphenylamine is 9:1
Raw material weight part ratio in dipping emulsion：
PTFE emulsion, 70 parts；Dodecyl Dimethyl Amine, 5 parts；N- hydroxymethylstear amides, 7 parts；Methyl-silicone oil, 25 Part；The weight ratio of totally 8 parts of isopropyl titanate and dialkyl diphenylamine, isopropyl titanate and dialkyl diphenylamine is 9:1.
Preparation method：
Step S1, warp thread basalt yam and weft yarn PPS yarns are mutually perpendicular to interweave in air-jet loom, base fabric is made； Wherein, warp count:Weft count=1:1, base fabric grammes per square metre 400g/m2；
Step S2, by PPS fibers through mechanical net-forming process, PPS fibrous layers are made；
1. shredding：Shredding is carried out to PPS fibers by opener, reaches soft fluffy state；2. comb：It is sent into carding machine It is combed into fibre web；3. lapping：Lapping is carried out using lapping machine.
Step S3, the lapping of base fabric above and below stack above-mentioned PPS fibrous layers, preliminary pre-needling；
Step S4, main acupuncture, is made filtering material；
Step S5, filtering material made of step S4 is subjected to impregnation, impregnated in dipping emulsion；Dipping temperature 85 DEG C, dip time 15 minutes, it is 35% to control liquid carrying rate；
Step S6, preliminary drying (110 DEG C), drying (140 DEG C) and high-temperature shaping (230 DEG C).
The filtering material, is three laminates, and first layer is PPS fibrous layers (200g/m2)；The second layer is base fabric (400g/m2), the base fabric is formed by warp thread basalt yam and weft yarn PPS yarns interwovens；Third layer is PPS fibrous layers (200g/m2)。
Embodiment 8：Effect example
According to HJ/T324-2006 environmental protection product technical requirements sack cleaner filtrates, prepared by embodiment 1~7 Filtering material carry out dust-cleaning efficiency and heating in 100 hours after strength retention test, specific data see the table below.
Dust-cleaning efficiency (%) Strength retention (%) after heating in 100 hours
Embodiment 1 92.5 96.8
Embodiment 4 91.4 95.2
Embodiment 5 90.9 95.6
Embodiment 6 70.6 74.3
Embodiment 7 72.8 72.6
The effect and embodiment 4,5 of embodiment 2,3 are basically identical.
The above results show that filtering material provided by the invention has high temperature resistant, chemical resistance and fire-retardant characteristic, and Strength retention is higher after dust-cleaning efficiency and heating in 100 hours, the dust removal by filtration suitable for high-temperature work environment, is suitable for In heating boiler.This may be relevant with the weight ratio of isopropyl titanate in dipping emulsion and dialkyl diphenylamine, and metatitanic acid is different The weight ratio of propyl ester and dialkyl diphenylamine is 6~8:When 1, filtering material best performance.
The effect of above-described embodiment indicates that the essentiality content of the present invention, but the protection of the present invention is not limited with this Scope.It will be understood by those within the art that technical scheme can be modified or equivalent substitution, Without departing from the essence and protection domain of technical solution of the present invention.

Claims (5)

1. a kind of fire resistant filter material for heating boiler, it is characterised in that be prepared via a method which to form：
Step S1, warp thread basalt yam and weft yarn PPS yarns are mutually perpendicular to interweave, base fabric is made；
Step S2, PPS fibrous layers are made through air-laid process or mechanical net-forming process in PPS fibers；
Step S3, the lapping of base fabric above and below stack above-mentioned PPS fibrous layers, preliminary pre-needling；
Step S4, main acupuncture, is made filtering material；
Step S5, filtering material made of step S4 is subjected to impregnation, impregnated in dipping emulsion；
Step S6, preliminary drying, drying and high-temperature shaping；
Wherein, the dipping emulsion is prepared by the raw material of following parts by weight：PTFE emulsion, 65~75 parts；Dodecyl Dimethyl tertiary amine, 4~6 parts；N- hydroxymethylstear amides, 6~8 parts；Methyl-silicone oil, 20~30 parts；Isopropyl titanate and dioxane The weight ratio of totally 7~9 parts of base diphenylamines, isopropyl titanate and dialkyl diphenylamine is 6~8:1.
2. fire resistant filter material according to claim 1, it is characterised in that the dipping emulsion passes through following parts by weight Raw material be prepared：PTFE emulsion, 70 parts；Dodecyl Dimethyl Amine, 5 parts；N- hydroxymethylstear amides, 7 parts；Methyl Silicone oil, 25 parts；The weight ratio of totally 8 parts of isopropyl titanate and dialkyl diphenylamine, isopropyl titanate and dialkyl diphenylamine For 7:1.
3. fire resistant filter material according to claim 1, it is characterised in that the dipping emulsion passes through following parts by weight Raw material be prepared：PTFE emulsion, 65 parts；Dodecyl Dimethyl Amine, 4 parts；N- hydroxymethylstear amides, 6 parts；Methyl Silicone oil, 20 parts；The weight ratio of totally 7 parts of isopropyl titanate and dialkyl diphenylamine, isopropyl titanate and dialkyl diphenylamine For 6:1.
4. fire resistant filter material according to claim 1, it is characterised in that the dipping emulsion passes through following parts by weight Raw material be prepared：PTFE emulsion, 75 parts；Dodecyl Dimethyl Amine, 6 parts；N- hydroxymethylstear amides, 8 parts；Methyl Silicone oil, 30 parts；The weight ratio of totally 9 parts of isopropyl titanate and dialkyl diphenylamine, isopropyl titanate and dialkyl diphenylamine For 8:1.
5. according to any described fire resistant filter material of Claims 1 to 4, it is characterised in that：At the dipping of the step S5 80~90 DEG C of dipping temperature in reason, dip time 10~20 minutes, it is 30~40% to control liquid carrying rate.
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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
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CN112295315A (en) * 2020-10-27 2021-02-02 安徽中电环保材料股份有限公司 Anti-deformation PPS filtering material, preparation process and filtering bag

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