CN105688510A - P84 fiber and PPS (Polyphenylene Sulfide) fiber composite high-temperature-resisting spunlaced felt and preparation method thereof - Google Patents

P84 fiber and PPS (Polyphenylene Sulfide) fiber composite high-temperature-resisting spunlaced felt and preparation method thereof Download PDF

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Publication number
CN105688510A
CN105688510A CN201610058398.3A CN201610058398A CN105688510A CN 105688510 A CN105688510 A CN 105688510A CN 201610058398 A CN201610058398 A CN 201610058398A CN 105688510 A CN105688510 A CN 105688510A
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fiber
felt
pps
layer
spun lacing
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徐彪
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SUZHOU HUILONG PURIFYING FILTER CO Ltd
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SUZHOU HUILONG PURIFYING FILTER CO Ltd
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Priority to CN201610058398.3A priority Critical patent/CN105688510A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • 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
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/08—Impregnating
    • 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
    • B32B5/02—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 structural features of a fibrous or filamentary layer
    • 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
    • B32B5/02—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 structural features of a fibrous or filamentary layer
    • B32B5/028—Net structure, e.g. spaced apart filaments bonded at the crossing points
    • 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
    • B32B5/02—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 structural features of a fibrous or filamentary layer
    • B32B5/08—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 structural features of a fibrous or filamentary layer the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different 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
    • 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
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/08—Interconnection of layers by mechanical means
    • D—TEXTILES; PAPER
    • 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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/02—Cotton wool; Wadding
    • D—TEXTILES; PAPER
    • 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
    • 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
    • D04H1/44—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/492—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04—Additives and treatments of the filtering material
    • B01D2239/0464—Impregnants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/0604—Arrangement of the fibres in the filtering material
    • B01D2239/0618—Non-woven
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/0604—Arrangement of the fibres in the filtering material
    • B01D2239/0636—Two or more types of fibres present in the filter material
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/20—All layers being fibrous or filamentary
    • 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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary layer
    • 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
    • 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
    • B32B2262/0253—Polyolefin fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
    • B32B2262/14—Mixture of at least two fibres made of different materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2270/00—Resin or rubber layer containing a blend of at least two different polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
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    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B2307/732—Dimensional properties
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Abstract

The invention discloses a P84 fiber and PPS (Polyphenylene Sulfide) fiber composite high-temperature-resisting spunlaced felt and a preparation method thereof. The P84 fiber and PPS fiber composite high-temperature-resisting spunlaced felt comprises a base cloth layer in the middle, wherein the upper surface of the base cloth layer is provided with an ultrafine fiber dust accepting surface layer, and a ventilation and air purification surface layer is arranged on the lower surface of the base cloth layer; the base cloth layer, the ultrafine fiber dust accepting surface layer and the ventilation and air purification surface layer are needled to form the felt; the surface of the felt is provided with a PTFE (Polytetrafluoroethylene) emulsion impregnation layer. The ultrafine fiber dust accepting surface layer is composed of P84 fibers with a three-leaf-shaped structure and a PPS fiber spreading net with the size of 1D; an ultrahigh-pressure multi-path spunlacing process is used for replacing a traditional needling process; a spunlacing flexible entangling laminating technology and a splitting process are utilized, so that the P84 fibers are split and cracked into fibers with relatively fine fiber diameters, and irregular pores are formed; the distribution of pore diameters is more uniform, tight and intensive than a needed filtering material; the felt has extremely high filtering efficiency and the emission concentration is lower than 10mg/m<3>.

Description

A kind of P84 fiber and high temperature resistant spun lacing felt of PPS fiber composite and preparation method thereof
Technical field
The present invention relates to exhaust-gas treatment field, particularly relate to a kind of P84 fiber and high temperature resistant spun lacing felt of PPS fiber composite and preparation method thereof。
Background technology
PPS resin is just applied to fiber art in recent years, due to advantages such as its temperature tolerance are good, good springiness, antiseptic property are excellent, fire-retardant, is favored by flue gas ash removal field。In recent years, along with developing rapidly of industry, discharge of industrial wastes is day by day serious, has jeopardized the healthy of natural environment and people。Flue gas ash removal is the important component part of pollution administration, and bag-type dusting is exactly the important method administering flue gas。Administering flue gas and need tencel high temperature resistant, corrosion resistant, PPS fiber can meet above requirement substantially。
But in gas solid separation field, particularly a large amount of PPS fiber needled felts used on the sack cleaner of thermal power plant, along with the raising of state environmental emissioning standard, simple PPS fiber needled felt concentration of emission is not up to standard, and non-oxidizability is general, result of use and life-span are general。Therefore, it is necessary to existing PPS dedusting filtrate is improved, to improve its dedusting precision and to improve its non-oxidizability。
P84 fiber is also a kind of fire-retardant, fiber filtering that heatproof is stable, and when 240 DEG C of temperature, the mechanical performance of P84 polyimide fiber will not change, and most high-temperature resistant is up to 260 DEG C。In addition, owing to P84 fiber is special-shaped (leaf type) section structure, there is very big filter table area, there is the strainability of excellence, so P84 fiber also frequent implanted filtrate top layer (dust-collecting face side is to improve the strainability of filtrate), it is possible to require higher technique suitable in concentration of emission。
Summary of the invention
It is an object of the invention to provide a kind of P84 fiber and high temperature resistant spun lacing felt of PPS fiber composite and preparation method thereof, improve filtrate integral filter precision and non-oxidizability, wearability strengthens, and reduces deashing frequency, improves service life。
The technical solution used in the present invention is as follows: a kind of P84 fiber and the high temperature resistant spun lacing felt of PPS fiber composite, including middle base cloth layer, the upper surface of described base cloth layer is provided with superfine fibre dust-collecting face layer, the lower surface of described base cloth layer is provided with ventilative pure qi (oxygen) surface layer, described superfine fibre dust-collecting face layer is made up of P84 fiber and ultra-fine PPS fiber lapping, described base cloth layer, described superfine fibre dust-collecting face layer become felt, described felt surface to have PTFE emulsion dipping layer with described ventilative pure qi (oxygen) surface layer spun lacing。
Further, described superfine fibre dust-collecting face layer is made up of the P84 fiber of trilobal cross structure and the PPS fiber lapping of 1D。
Further, in described superfine fibre dust-collecting face layer, the content of the P84 fiber of trilobal cross structure is 15%。
Further, described ventilative pure qi (oxygen) surface layer is made up of the PPS fiber lapping of 2.2D。
Further, described base cloth layer is that 100%PTFE strengthens base fabric。
Additionally, the present invention also disclosed aforementioned P84 fiber and high temperature resistant spun lacing felt of PPS fiber composite and preparation method thereof, concrete technical scheme is as follows:
By P84 fiber and ultra-fine PPS fiber through shredding, mix, combing, lapping process form superfine fibre dust-collecting face layer, it is preferred that described P84 fiber is the P84 fiber of trilobal cross structure, and described PPS fiber is the PPS fiber of 1D；
(2) 2.2DPPS fiber is formed ventilative pure qi (oxygen) surface layer through shredding, mixing, lapping process；
(3) superfine fibre dust-collecting face layer and the ventilative pure qi (oxygen) surface layer step (1) and (2) prepared apply respectively in base fabric, through pre-needling, spun lacing, obtain felt；
(4) felt PTFE dispersion liquid impregnation process step (3) prepared, by drying and shaping, rolling rolling, namely obtains PPS fiber and the high temperature resistant spun lacing felt of P84 fiber composite。
Further, described step water jet process (3) is supertension multiple tracks spun lacing, including the positive and negative 6 road spun lacing step to pre-needling felt。
Further, described step (3) and described step (4) between also include being sequentially carried out described felt singe, technique that press polish processes, the described air pressure processed of singing is 1.6Pa, in the press polish that described press polish processes, roll temperature is 160-180 DEG C, press polish lower roll temperatures is 190-210 DEG C, platen pressure is 2.5 kilograms, and Calendering speeds is 6m/min。
Further, described step PTFE dispersion liquid percentage by weight (4) is: PTFE is 10-14%, and silicone oil is 3%, and coupling agent is 0.2-0.5%, and water is 82.5 86.8%。
Further, the dipping temperature of described step impregnation process (4) is 190 DEG C, and impregnating speed is 4m/min。
Compared with prior art, the invention has the beneficial effects as follows:
(1) the present invention adopts the P84 fiber of trilobal cross structure and the PPS processbearing astrocyte superfine fibre dust-collecting face of 1D, and carry out being combined into felt with anticorrosive sludge proof PTFE base fabric, under supertension multiple tracks spun lacing, the P84 fiber of part trilobal cross structure is split into more tiny fibre diameter by fibrillation again, forming irregular hole, pore-size distribution is than needle punched filter material evenly, closely and concentrate, good permeability, possessing high filter efficiency, concentration of emission is at 10mg/m3Below。
(2) preparation method of the present invention adopts supertension multiple tracks spun lacing, and the flexibility entanglement complex technique of water jet process has fiber and base fabric damage little, and compared with common filtering product, product mechanical strength of the present invention is high, and wearability is good, longer service life。
(3) preparation method of the present invention can make filter material surface smooth after impregnation process, easy-to-clean ash, dimensionally stable；The acid-alkali-corrosive-resisting that protection filtrate is overall simultaneously, and filtrate entirety porosity can be improved further, improve concentration of emission and service life。
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention；
Fig. 2 is the preparation method flow chart of the embodiment of the present invention。
Detailed description of the invention
Embodiment:
A kind of P84 fiber of the present embodiment and the high temperature resistant spun lacing felt of PPS fiber composite, including the base cloth layer 1 being strengthened the centre that base fabric is made by 100%PTFE, the upper surface of base cloth layer 1 is provided with superfine fibre dust-collecting face layer 2, the lower surface of base cloth layer 1 is provided with highly efficient gas permeable pure qi (oxygen) face 3, base cloth layer 1, superfine fibre dust-collecting face layer 2 become felt, felt surface to have PTFE emulsion dipping layer 4 with ventilative pure qi (oxygen) surface layer 3 spun lacing。
Wherein superfine fibre dust-collecting face layer 2 is made up of the P84 fiber of trilobal cross structure and the PPS fiber of 1D, wherein the constituent content of the P84 fiber of trilobal cross structure preferably 15%。The P84 fiber of trilobal cross has cohesive force between higher fiber, it is possible to carry out good compound with the PPS fiber of 1D, it is provided that high-tenacity。
Ventilative pure qi (oxygen) surface layer 3 is made up of the PPS fiber lapping of 2.2D。
Base cloth layer 1 strengthens base fabric for 100%PTFE, and it is the enhancement layer of Nomex, provides overall powerful for Nomex, has significantly high brute force, it is ensured that whole service life pricked by pin。
A kind of preparation method of P84 fiber and the high temperature resistant spun lacing felt of PPS fiber composite, it comprises the following steps:
By the PPS fiber of P84 fiber and 1D through shredding, mix, combing, lapping process form superfine fibre dust-collecting face layer 2；
(2) the PPS fiber of 2.2D is formed highly efficient gas permeable pure qi (oxygen) surface layer 3 through shredding, mixing, lapping process；
(3) superfine fibre dust-collecting face layer and the ventilative pure qi (oxygen) surface layer step (1) and (2) prepared apply respectively on base cloth layer 1, through pre-needling, spun lacing, obtain felt；In order to remove the fine hair on felt surface, it is thus achieved that the product of smooth finish surface, the characteristic according to PPS fiber, felt is singed, press polish post processing。The air pressure processed of wherein singing is preferably 1.6Pa, and in the press polish that press polish processes, roll temperature is 160-180 DEG C, and press polish lower roll temperatures is 190-210 DEG C, and platen pressure is 2.5 kilograms, and Calendering speeds is 6m/min。
(4) felt PTFE dispersion liquid impregnation process step (3) prepared, by drying and shaping, rolling rolling, namely obtains PPS fiber and the high temperature resistant spun lacing felt of P84 fiber composite。
Superfine fibre dust-collecting face layer 2 is preferably by the PPS processbearing astrocyte of the P84 fiber of trilobal cross structure and 1D, base cloth layer 1 strengthens base fabric for 100%PTFE, it it is acid and alkali-resistance, the high strength base cloth of good in oxidation resistance, base cloth layer 1, superfine fibre dust-collecting face layer 2 first pass around pre-needling together with ventilative pure qi (oxygen) surface layer 3 and become felt, the pre-needling felt made is sent into spun-laced machine, adopts the main thorn of ultra-high pressure water fluid jet, positive and negative is carried out 6 road spun lacing consolidations, P84 fiber and the high temperature resistant spun lacing felt of PPS fiber composite can be obtained。
Carrying out supertension multiple tracks water jet process, the P84 fiber of part trilobal cross structure is split into more tiny fibre diameter by fibrillation again, forms irregular hole, has had bigger raising in filter efficiency and filtering accuracy, the interception result of PM2.5 is good, and concentration of emission is at 10mg/m3Below。Damaging little additionally, the flexibility entanglement complex technique of spun lacing has to fiber and base fabric, compared with common filtering product, product mechanical strength is higher, and wearability is better。
Step (4) middle PTFE dispersion liquid percentage by weight is preferably: PTFE is 10-14%, and silicone oil is 3%, and coupling agent is 0.2-0.5%, and water is 82.5 86.8%；The dipping temperature of impregnation process is 190 DEG C, and impregnating speed is 4m/min。
Above-described is only some embodiments of the present invention。For the person of ordinary skill of the art, without departing from the concept of the premise of the invention, it is also possible to making some deformation and improvement, these broadly fall into protection scope of the present invention。

Claims (10)

1. a P84 fiber and the high temperature resistant spun lacing felt of PPS fiber composite, it is characterized in that: include the base cloth layer (1) of centre, the upper surface of described base cloth layer (1) is provided with superfine fibre dust-collecting face layer (2), the lower surface of described base cloth layer (1) is provided with ventilative pure qi (oxygen) surface layer (3), described superfine fibre dust-collecting face layer (2) is made up of P84 fiber and ultra-fine PPS fiber lapping, described base cloth layer (1), described superfine fibre dust-collecting face layer (2) becomes felt with described ventilative pure qi (oxygen) surface layer (3) spun lacing, described felt surface has PTFE emulsion dipping layer (4)。
2. a kind of P84 fiber according to claim 1 and the high temperature resistant spun lacing felt of PPS fiber composite, it is characterised in that: described superfine fibre dust-collecting face layer (2) is made up of the P84 fiber of trilobal cross structure and the PPS fiber lapping of 1D。
3. a kind of P84 fiber according to claim 2 and the high temperature resistant spun lacing felt of PPS fiber composite, it is characterised in that: in described superfine fibre dust-collecting face layer (2), the content of the P84 fiber of trilobal cross structure is 15%。
4. a kind of P84 fiber according to claim 1 and the high temperature resistant spun lacing felt of PPS fiber composite, it is characterised in that: described ventilative pure qi (oxygen) surface layer (3) is made up of the PPS fiber lapping of 2.2D。
5. a kind of P84 fiber according to claim 1 and the high temperature resistant spun lacing felt of PPS fiber composite, it is characterised in that: described base cloth layer (1) strengthens base fabric for 100%PTFE。
6. a kind of P84 fiber according to claim 1 and the high temperature resistant spun lacing felt Preparation Method of PPS fiber composite, it is characterised in that comprise the following steps:
By P84 fiber and ultra-fine PPS fiber through shredding, mix, combing, lapping process form superfine fibre dust-collecting face layer, it is preferred that described P84 fiber is the P84 fiber of trilobal cross structure, and described PPS fiber is the PPS fiber of 1D；
(2) the PPS fiber of 2.2D is formed ventilative pure qi (oxygen) surface layer through shredding, mixing, lapping process；
(3) superfine fibre dust-collecting face layer and the ventilative pure qi (oxygen) surface layer step (1) and (2) prepared apply respectively in base fabric, through pre-needling, spun lacing, obtain felt；
(4) felt PTFE dispersion liquid impregnation process step (3) prepared, by drying and shaping, rolling rolling, namely obtains PPS fiber and the high temperature resistant spun lacing felt of P84 fiber composite。
7. a kind of P84 fiber according to claim 6 and the high temperature resistant spun lacing felt Preparation Method of PPS fiber composite, it is characterised in that: described step water jet process (3) is supertension multiple tracks spun lacing, including the positive and negative 6 road spun lacing step to pre-needling felt。
8. a kind of P84 fiber according to claim 6 and the high temperature resistant spun lacing felt Preparation Method of PPS fiber composite, it is characterized in that: described step (3) and described step (4) between also include being sequentially carried out described felt singe, technique that press polish processes, the described air pressure processed of singing is 1.6Pa, in the press polish that described press polish processes, roll temperature is 160-180 DEG C, press polish lower roll temperatures is 190-210 DEG C, platen pressure is 2.5 kilograms, and Calendering speeds is 6m/min。
9. a kind of P84 fiber according to claim 6 and the high temperature resistant spun lacing felt Preparation Method of PPS fiber composite, it is characterized in that: described step PTFE dispersion liquid percentage by weight (4) is: PTFE is 10-14%, silicone oil is 3%, and coupling agent is 0.2-0.5%, and water is 82.5 86.8%。
10. a kind of P84 fiber according to claim 6 and the high temperature resistant spun lacing felt Preparation Method of PPS fiber composite, it is characterised in that: the dipping temperature of described step impregnation process (4) is 190 DEG C, and impregnating speed is 4m/min。
CN201610058398.3A 2016-01-28 2016-01-28 P84 fiber and PPS (Polyphenylene Sulfide) fiber composite high-temperature-resisting spunlaced felt and preparation method thereof Pending CN105688510A (en)

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