CN104553174A - Composite nonwoven material and preparation method thereof - Google Patents
Composite nonwoven material and preparation method thereof Download PDFInfo
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- CN104553174A CN104553174A CN201510004903.1A CN201510004903A CN104553174A CN 104553174 A CN104553174 A CN 104553174A CN 201510004903 A CN201510004903 A CN 201510004903A CN 104553174 A CN104553174 A CN 104553174A
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/02—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
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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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
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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
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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- 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
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
- D04H1/728—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by electro-spinning
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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
- B32B2255/00—Coating on the layer surface
- B32B2255/02—Coating on the layer surface on fibrous or filamentary layer
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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
- B32B2255/00—Coating on the layer surface
- B32B2255/20—Inorganic coating
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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
- 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
- B32B2262/0261—Polyamide fibres
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Ceramic Engineering (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention discloses a composite nonwoven material and a preparation method thereof. The composite nonwoven material disclosed by the invention comprises at least two PP spun-bonded nonwoven material layers and a PA6 or PA66 electrostatic spinning nanofiber material layer sandwiched between the two PP spun-bonded nonwoven material layers, wherein an ultraviolet light absorber and an antibacterial agent are uniformly absorbed to the surface of the composite nonwoven material; and in the two PP spun-bonded nonwoven material layers between which the PA6 or PA66 electrostatic spinning nanofiber material layer is sandwiched, the surface of at least one PP spun-bonded nonwoven material layer is coated with a nanometer titania photocatalytic coating. The composite nonwoven material disclosed by the invention is high in strength and low in fiber fineness and has the advantages of high porosity, high specific surface area, excellent barrier property, excellent gas permeability, aging resistance and antibacterial property. Compared with a blended nonwoven material, the composite nonwoven material disclosed by the invention has the advantages that the production and quality defects caused by the reason that the additives are non-uniformly mixed or separated out are overcome; and moreover, the preparation method is simple, and only general nonwoven material production equipment needs to be adopted.
Description
Technical field
The application relates to non-woven material field, particularly relates to a kind of composite nonwoven material for building field and preparation method thereof.
Background technology
Novel high-quality non-woven building structural materials, needs to have good gas permeability, the weather-proof performances such as mould, durable in use and saving energy consumption of dispelling.The performance that this differentiation can be traced back to the eighties in last century and be occurred completely cuts off house wrap (housewrap) the class material of air-flow.At present except isolated air-flow, also need to have the weather-proof performance such as mould of dispelling; And to the latter, be not only yearning, become a kind of requirement.From use amount, according to INDA data, North America mainly America & Canada roofing, structural material year consumption supatex fabric about 1.8 hundred million dollars, mainly comprise the base material for house wrap/underlayment (underlay) and modified pitch roofing articles for use.Non-woven material for house wrap/underlayment accounts for 1/3 of total amount, and the non-woven material for roof substrate (roofing substrate) also accounts for 1/3 of total amount.
The U.S., Canadian Ji Jia compound company were proposed the composite spinning melt material and PE ventilated membrane in recent years, and this melt material that spins has weather-proof mould function of dispelling.At present, existing anti-aging namely weather-proof, and antibacterial mould product of namely dispelling mainly adopts co-blended spinning and finishing method to produce.The shortcoming of co-blended spinning method is that anti-aging polymer mixes uneven with polypropylene (PP), easily blocks spinneret, cannot ensure continuous print steady production; In addition, in spinning process, age resister is easily separated out, and pollutes spinning plate face, drafting system and hot-rolling mill, causes the problems such as spinning is abnormal, cloth cover bonding is bad.And the deficiency that finishing method is produced to be long flow path, production cost high.
Summary of the invention
The object of the application is to provide a kind of new composite nonwoven material, and preparation method thereof.
To achieve these goals, the application have employed following technical scheme:
The application discloses a kind of composite nonwoven material on the one hand, comprise at least two-layer PP viscose non-woven material layer, and PA6 or the PA66 electrostatic spinning nano fiber material layer be folded between two-layer PP viscose non-woven material layer, and the surface uniform of composite nonwoven material is absorbed with ultra-violet absorber and antiseptic; Further, clamp in the two-layer PP viscose non-woven material layer of PA6 or PA66 electrostatic spinning nano fiber material layer, the surface of at least one PP viscose non-woven material layer is coated with nano-titania photocatalyst coating.
It should be noted that, the key of the application is, be combined with each other electrostatic spinning and viscose non-woven material composition composite nonwoven material, has both solved the shortcoming that electrospun material is powerful low, the fibre fineness of composite is greatly reduced again simultaneously; Because electrospun material has high porosity, high-specific surface area, composite nonwoven material is made to have good barrier and gas permeability; Be coated with nano-titania photocatalyst coating on the surface of at least one PP viscose non-woven material layer, under the effect of light, the various organic compound of the oxidable decomposition of photocatalyst, mineralising part inorganic matter, have antibacterial effect; The ultra-violet absorber that composite nonwoven material surface uniform absorbs and antiseptic, make the composite nonwoven material of the application have antibacterial and aging-resistant performance.Be appreciated that, the key of the application is its structure, and the different disposal that each layer carries out, and can adopt the conventional reagent used as ultra-violet absorber and antiseptic, in a kind of implementation of the application, the method for preparing has carried out concrete restriction to both.
In addition, nano-titania photocatalyst is current most popular photocatalyst, be appreciated that, other photocatalyst material also may be used for the application, the application just considers the popularity of photocatalyst of titanium dioxide, and it is nontoxic as construction material, so preferably use nano-titania photocatalyst; Do not get rid of other photocatalyst and also may be used for the application, this is only that the routine of photocatalyst is replaced same in the application's protection domain.
Preferably, the thickness of PA6 or PA66 electrostatic spinning nano fiber material layer is 0.1-0.2mm, and average fibre diameter is 100-200nm, and average pore size is 0.5-1.0 μm.
It should be noted that, in the application, average pore size is the average pore size of electrostatic spinning layer, the non-weaving cloth that electrostatic spinning is formed a kind ofly has nanometer level microporous porous material, there is very large specific area, good penetrability, the feature that aperture is little, the application passes through electrospinning conditions and state modulator, the average pore size making PA6 or the PA66 electrostatic spinning nano fiber material layer of preparation is 0.5-1.0 μm, effectively can stop that in construction material, size is invaded in the mould of 2-10um, ensures the normal circulation of air simultaneously.
Preferably, ultra-violet absorber is the acrylate-based benzophenone of water-soluble 2-hydroxyl-4-or BP-4, and antiseptic is CMC.
It should be noted that, the ultra-violet absorber that the application adopts can be water-soluble, then spreads on composite nonwoven material surface by painting method; And the antiseptic adopted is the one of natural antibacterial agent, have nontoxic, harmless, be easy to biodegradation, the feature such as free from environmental pollution, harmless.
The another side of the application discloses the preparation method of the composite nonwoven material of the application, comprises the following steps,
(1) previously prepared one deck PP viscose non-woven material layer, in its surperficial coated with nano photocatalyst of titanium dioxide coating, forms the PP viscose non-woven material layer of photocatalyst coating;
(2) prepare another layer of PP viscose non-woven material layer again, be laid in aluminium sheet receiver surface, then carry out the electrostatic spinning of PA6 or PA66 on its surface, form PA6 or PA66 electrostatic spinning nano fiber material layer;
(3) stacked PA6 or the PA66 electrostatic spinning nano fiber material surface being combined in step (2) of PP viscose non-woven material adopting cross lapping mode to be applied by the photocatalyst of step (1), then applies ultra-violet absorber and antiseptic;
(4) hot rolling consolidation, forms described composite nonwoven material.
Preferably, step (1) is specially, and first evenly spreads in water by nano-titania photocatalyst, makes photocatalyst suspension; Then, when PP melt extrusion, photocatalyst suspension is atomized into droplet after being sprayed by nozzle, droplet is evenly attached to the PP bath surface extruded, utilize the heat of melt by the moisture evaporation in droplet, make nano titanium oxide evenly be attached to material surface and form coating, thus make the PP viscose non-woven material layer of nano-titania photocatalyst coating.
It should be noted that, the application utilizes the photocatalyst of atomization to process PP melt extrusion, and utilize the heat of melt itself by the moisture evaporation in droplet cleverly, make titanium dioxide be attached to bath surface and form coating, improve photocatalyst dispersing uniformity, thus improve its service efficiency, avoid the uneven quality problems caused of dispersion; Preferably, the nozzle specification of ejection photocatalyst suspension is 0.5mm, and the concrete mode being atomized into droplet is, the suspension of ejection is atomized into the droplet of different size under the compressed-air actuated clamping in nozzle both sides; Namely suspension is sprayed by the nozzle of 0.5mm, and the suspension of ejection is atomized into the droplet of different size under the compressed-air actuated clamping in nozzle both sides.Also it should be noted that, the thickness of coating can by the size of droplet, and the quantity for spray of droplet etc. control, and concrete coating layer thickness can be determined according to respective production or user demand, does not limit at this.
Preferred, in the application, the size of droplet is 5-10nm.It should be noted that, the particle diameter of the nano titanium oxide that the application adopts also is 5-10nm, therefore, is controlled by droplet at 5-10nm, can effectively make nano titanium oxide disperse, thus ensures photocatalyst coating uniformity; Be appreciated that the size of the droplet of the atomization of the application adapts with the particle diameter of nano titanium oxide, the change of size of the titanium dioxide used, droplet also will along with change.Also it should be noted that, although consider the dispersing uniformity of titanium dioxide, droplet is controlled in the scope adapted with titanium dioxide particle diameter, be appreciated that the size of droplet also can be the several times of titanium dioxide particle diameter, as long as atomization itself is uniform, that is, titanium dioxide granule number contained in droplet is uniform, also can ensure the uniformity of coating, and just its error can be relatively large; From this angle, the thickness of coating also can be controlled by the size controlling droplet.
Preferably, step (2) is specially, after another layer of PP viscose non-woven material layer is laid in aluminium sheet receiver surface, first PA6 or PA66 resin slicer is dissolved the spinning solution obtaining 0.1-0.4g/ml in a solvent, spinning solution shower nozzle applies high pressure positive electricity, be covered with the aluminium sheet receiver ground connection of PP viscose non-woven material layer, electrostatic spinning is carried out to spinning solution, spinning solution rate of extrusion is 0.5-3ml/h, spinning voltage is 30-40KV, receiving range is 20-35cm, the fiber that electrostatic spinning is formed is received in PP viscose non-woven material layer surface, form PA6 or PA66 electrostatic spinning nano fiber material layer.
It should be noted that, in the application, spinning solution can be prepared with reference to the electrostatic spinning of routine, therefore, and the solvent that its solvent also can use with reference to routine.In a kind of implementation of the application, the preferred solvent dimethylformamide adopting formic acid or polyacrylonitrile.
Preferably, in PA6 or PA66 electrostatic spinning nano fiber material layer, average fibre diameter is 100-200nm, and average pore size is 0.5-1.0 μm.
Preferably, be laid in the PP viscose non-woven material layer on aluminium sheet receiver surface, its thickness is 0.3-0.4mm, and material grammes per square metre is 30-40g/m
2.
Preferably, the method for coating ultra-violet absorber and antiseptic is in step (3), and with ultra-violet absorber and antiseptic for sandwich layer, melting range is the paraffin of 52-58 DEG C is wall material; Prepare in container at microcapsules and form upper strata for hot water layer, lower floor is the reaction environment of cold water layer, and the temperature of hot water layer, higher than melting point of paraffin wax, is distributed to hot water layer paraffin, forms the paraffin of one deck hot melt on hot water layer surface; Ultra-violet absorber and antiseptic are dispersed in water, form core material solution; Core material solution being dropped onto microcapsules prepares in container, when core drop is by wax layer, the paraffin that surface coverage one deck is 70-100 μm, automatically be adjusted to spherical through hot water layer, condensed to the paraffin covered during cold water layer and hardened, being formed the microcapsule solution of parafilm wrap ultra-violet absorber and/or antiseptic; Microcapsule solution is evenly coated in the surface of laminated composite material; The last hot rolling by step (4) is by microcapsules, and ultra-violet absorber and the antiseptic of release are absorbed by non-woven material, forms composite nonwoven material.Preferably, the size of core drop is about 3mm, and that concrete is 2-4mm.
It should be noted that, the mode of the creationary employing microcapsules of the application makes ultra-violet absorber and antiseptic evenly and is effectively scattered in composite material surface, and utilizes hot rolling by microcapsules release ultra-violet absorber wherein and antiseptic cleverly; This mode has two benefits, and the first, be uniformly dispersed, the location release of microcapsules, makes ultra-violet absorber and antiseptic can be dispersed in assigned address uniformly; The second, service efficiency is high, and directly applies or sprays ultra-violet absorber and compare with the mode of antiseptic, and the release of microcapsules location, almost have not a particle of waste, and consumption can well control.
Also it should be noted that, the application importantly adopts so a kind of mode ultra-violet absorber and antiseptic to be applied and non-woven material surface, the concrete consumption of ultra-violet absorber and antiseptic is determined according to different production or user demand, does not limit at this.
Owing to adopting above technical scheme, the beneficial effect of the application is:
The composite nonwoven material of the application, adopts the combination of electrostatic spinning and viscose non-woven material, has both ensured good material brute force, and has again reduced fibre fineness; Possess the feature such as high porosity, high-specific surface area, there is good barrier and gas permeability.Be coated with nano-titania photocatalyst coating on the surface of PP viscose non-woven material layer, under the effect of light, the various organic compound of the oxidable decomposition of photocatalyst, mineralising part inorganic matter, have antibacterial effect.The ultra-violet absorber of composite nonwoven material surface uniform coating and antiseptic also improve ageing resistace and the anti-microbial property of material.The non-woven material that together prepared by blending is compared, and there is not additive mixing inequality or separates out the production and mass defect that cause.The composite nonwoven material of the application is used for construction safety and possesses good gas permeability, weather-proof dispel mould, durable in use.
The preparation method of the composite nonwoven material of the application, compared with finishing method, simple to operate, general instrument can carry out; And prepared composite nonwoven material possesses the features such as powerful high, good permeability, weather-proof antibiotic property are lasting simultaneously.Composite nonwoven material prepared by the method for the application, the Cycle1 standard conditions according to ASTMG154-06 standard are tested, and the strength retention of material is greater than 90%, and according to AATCC100-2004 standard testing, bacteriostasis rate reaches more than 99%.
In the preferred preparation method of the application, adopt the photocatalyst of atomization to process PP melt, ensured the uniformity of photocatalyst coating; Adopt mode disperse violet ultraviolet absorbers and the antiseptic of microcapsules, both the uniform pickup of ultra-violet absorber and antiseptic had been ensured, turn avoid in blended spinning owing to disperseing the uneven impact on production process and the quality of production, it also avoid ultra-violet absorber and antiseptic is separated out producing the impact caused.
Accompanying drawing explanation
Fig. 1 is preparation technology's flow chart of composite nonwoven material in the embodiment of the present application;
Fig. 2 is the structural representation of composite nonwoven material in the embodiment of the present application;
1 be the PP viscose non-woven material layer, 2 of coating with nano titanic oxide photocatalyst be wherein PA6 or PA66 electrostatic spinning nano fiber material layer, 3 for PP viscose non-woven material layer.
Detailed description of the invention
The composite nonwoven material of the application, adopt electrostatic spinning and viscose non-woven material phase compound, both the shortcoming that electrospun material is powerful low had been solved, again the fibre fineness of composite is reduced greatly simultaneously, because electrospun material has the feature of high porosity, high-specific surface area, make composite nonwoven material not only have good barrier, also have good gas permeability.
The preparation method of the application, simple to operate, compared with finishing method, flow process is simple, and general non-woven material production line can carry out, and production cost is low.Further, by the surperficial coated with nano photocatalyst of titanium dioxide coating at PP viscose non-woven material layer, antibacterial action is realized; By at composite material surface coating ultra-violet absorber and antiseptic, improve ageing resistace and the anti-microbial property of material; Barrier and the gas permeability of material is realized by electrostatic spinning and viscose non-woven material compound; The composite nonwoven material of final preparation is made to possess the features such as powerful high, good permeability, weather-proof antibiotic property are lasting; Without the need to adopting blended spinning, it also avoid that blended to spin the mixing of middle additive uneven or separate out the impact on production process and product quality caused.
It should be noted that, in the application, the preparation of PP viscose non-woven material layer can with reference to the spun-bond process of routine, just in preferred scheme in order to ensure the quality of composite nonwoven material, its grammes per square metre and thickness are limited.In addition, in another preferred version, carry out nano-titania photocatalyst spraying process to the PP melt extruded, just increase a sprayer unit at PP melt extrusion die head place, spray to it, all the other carry out with reference to conventional spun-bond process.
In the application, electrostatic spinning also can carry out with reference to the technique of routine, and therefore, in the preparation of PA6 and PA66 spinning solution, the solvent adopted adopts conventional solvent, is not specifically limited at this; In the preferred version of the application, to the key parameter of electrostatic spinning, as spinning solution rate of extrusion, spinning voltage, receiving range etc. limit, and define the thickness and fibre diameter etc. of electrostatic spinning layer, to prepare more excellent composite nonwoven material.
In the application, the mode of each layer compound consolidation also with reference to the compound consolidation technique of routine, in the preferred version of the application, in order to prepare the specific demand of method, preferably can be adopted method hot rolling consolidation; Concrete, this specific demand namely in preferred scheme in order to make microcapsules, release ultra-violet absorber wherein and antiseptic.About microcapsules, with paraffin be wall material prepare the method for microcapsules can with reference to the microcapsule preparation process of routine, therefore, decentralized medium also can adopt conventional decentralized medium, only otherwise react with ultra-violet absorber and antiseptic and affect its performance, be not specifically limited at this.The application is the creationary ultra-violet absorber and the antiseptic that core are changed into the application, and creationary microcapsules is coated on composite nonwoven material surface, to realize the fixed point release of ultra-violet absorber and antiseptic.
In the application, PP and polypropylene, PA6 and nylon 6, PA66 and nylon66 fiber.
Also by reference to the accompanying drawings the application is described in further detail below by specific embodiment.Following examples are only further described the application, should not be construed as the restriction to the application.
Embodiment one
The technological process of this example, as shown in Figure 1, comprises the preparation of nano-titania photocatalyst coating, electrostatic spinning, the preparation of anti-aging microcapsules and composite steps.Wherein the preparation method of PP viscose non-woven material layer is with reference to conventional spunbond process, comprises polypropylene chip, melt extrudes, filters metering, spinning, cooling, drawing-off, lapping.
The concrete preparation method of composite nonwoven material of this example is as follows:
(1) the medical grade nano-titania photocatalyst selecting Hong Kong Kang Li medical centre to provide, is distributed in water uniformly by photocatalyst of titanium dioxide, is prepared into the suspension of content of titanium dioxide 0.75%; The nozzle of nano-titania photocatalyst suspension by 0.5mm is sprayed, the suspension of ejection is atomized into the droplet of different size under the compressed-air actuated clamping in nozzle both sides, by adjusting compressed-air actuated pressure nano titanium oxide suspension is impacted into the droplet of 10nm; Conventional spun-bond process is adopted to prepare ground floor PP viscose non-woven material layer, and, when PP melt extrusion, photocatalyst spraying is imposed on PP melt extrusion die head place, utilize the heat of melt itself by the moisture evaporation in droplet, make titanium dioxide be attached to bath surface, the PP viscose non-woven material surface of finally preparing in spinning, lapping forms nano-titania photocatalyst coating, thus makes the PP viscose non-woven material layer of photocatalyst coating; Wherein PP viscose non-woven material layer grammes per square metre is 25g/m
2, thickness is 0.25mm.
(2) prepare another layer of PP viscose non-woven material layer again, preparation method is identical with conventional method, without the need to carrying out photocatalyst spraying process, thickness 0.3mm, grammes per square metre 30g/m
2, and be laid in aluminium sheet receiver surface; PA6 resin slicer is dissolved in the spinning solution obtaining 0.15g/ml in the dimethyl formamide solution of polyacrylonitrile, 40KV high pressure positive electricity is applied at spinning solution shower nozzle, be covered with the aluminium sheet receiver ground connection of PP viscose non-woven material layer, electrostatic spinning is carried out to spinning solution, spinning solution rate of extrusion 0.5-1ml/h, spinning voltage is set as 40KV, receiving range 30cm, the fiber that electrostatic spinning is formed is received in PP viscose non-woven material layer surface, form Static Spinning material layer, the thickness of material is 0.15mm, average fibre diameter 150nm, average pore size 1um.
(3) preparation of anti-aging microcapsules: get 15 grams of shitosans, in the NaOH solution of 50% after alkalization, adds 150ml isopropyl alcohol, proceed in there-necked flask, add monoxone 18g, reaction 2h, be warming up to 650 DEG C, react 2h again, stop heating, regulate PH to neutral, use 70% methanol wash, again with absolute methanol washing, 600 DEG C of oven dry, obtain CMC, by water-soluble for the product of gained, after acetone precipitation, then use absolute ethanol washing, repeatedly carry out 3-5 time, products obtained therefrom vacuum drying, obtain refining CMC, as the antiseptic of this example, the ultra-violet absorber of this example adopts the acrylate-based benzophenone of water-soluble 2-hydroxyl-4-, ultra-violet absorber and antiseptic are mixed as sandwich layer according to the part by weight of 60:40, fusing point is the paraffin of 55 degree is wall material, wall material and core are distributed in water respectively, two water layers are had in container, upper strata is 70 DEG C of hot water layers, lower floor is 20 DEG C of cold water layers, because cold water density is larger, two-layer liquid naturally separately, namely paraffin as wall material be dispersed in hot water layer, the paraffin of one deck hot melt is formed on hot water layer surface, control the core drop that core material solution forms about about 3mm, from the liquid level of container, 5cm falls, core drop impinges upon on the paraffin of hot melt, during by paraffin layer, surface coverage one deck is about the paraffin of 70-100 μm, automatically be adjusted to spherical when hot water layer, paraffin cohesion sclerosis when subcooled water layer, form the microcapsule solution of parafilm wrap ultra-violet absorber and antiseptic.
(4) the PP viscose non-woven material layer that the photocatalyst of step (1) applies is transferred on the one-tenth lace curtaining of electrostatic spinning through cross lapping, the stacked PA6 electrostatic spinning nano fiber material surface being combined in step (2) of the PP viscose non-woven material that the photocatalyst of step (1) is applied; Then microcapsule solution step (3) prepared adopts coating even application at superimposed composite material surface, adopt hot rolling by superimposed composite compound consolidation again, hot rolling is utilized ultra-violet absorber and antiseptic to be discharged from microcapsules, material is air-dry, namely obtain the composite nonwoven material of this example.
Tension stress test, gas permeability and permeability test are carried out to the composite nonwoven material of this example, and adopts ASTM G154-06 standard and its strength retention of AATCC100-2004 standard testing and bacteriostasis rate respectively.Result shows, the composite nonwoven material of this example preparation has good tension stress ability, transverse and longitudinal quality ratio is about 1:1, and adopt ISO 9073-15 standard testing, the gas permeability of material is at 500 ~ 600mm/s, use TSI8130 instrument to test under flow 32LPM, the penetrance of material is 65 ~ 70%; Cycle1 standard conditions according to ASTMG154-06 standard are tested, its strength retention more than 90%; According to AATCC100-2004 standard testing, its bacteriostasis rate can reach more than 98%.Visible, the composite nonwoven material of this example preparation possesses good gas permeability and barrier, and powerful high, and weather-proof antibiotic property is excellent.
Embodiment two
The technological process of this example is identical with embodiment one, wherein, in the preparation process of nano-titania photocatalyst coating, by adjusting compressed-air actuated pressure nano titanium oxide suspension is impacted into the droplet of 5nm; Grammes per square metre for the PP viscose non-woven material layer of photocatalyst process is 28g/m
2, thickness is 0.3mm.In electrostatic spinning process, the thickness being laid in the PP viscose non-woven material layer on aluminium sheet receiver surface is 0.32mm, grammes per square metre 32g/m
2pA66 resin slicer is dissolved the spinning solution obtaining 0.4g/ml in a solvent, 40KV high pressure positive electricity is applied at spinning solution shower nozzle, be covered with the aluminium sheet receiver ground connection of PP viscose non-woven material layer, electrostatic spinning is carried out to spinning solution, spinning solution rate of extrusion 3ml/h, spinning voltage is set as 40KV, receiving range 35cm, the fiber that electrostatic spinning is formed is received in PP viscose non-woven material layer surface, and form Static Spinning material layer, the thickness of material is 0.1mm, average fibre diameter 100nm, average pore size 0.5um.In the preparation process of anti-aging microcapsules, the acrylate-based benzophenone UV-absorber of water-soluble 2-hydroxyl-4-and carboxymethyl chitosan glycopeptide antibacterial agent are mixed as core according to the part by weight of 55:45.All the other are identical with embodiment one.
Tension stress test, gas permeability and permeability test are carried out to the composite nonwoven material of this example, and adopts ASTM G154-06 standard and its strength retention of AATCC100-2004 standard testing and bacteriostasis rate respectively.Result shows, the composite nonwoven material of this example preparation has good tension stress ability, transverse and longitudinal quality ratio is about 1:1, and adopt ISO 9073-15 standard testing, the gas permeability of material is at 600 ~ 750mm/s, use TSI8130 instrument to test under flow 32LPM, the penetrance of material is 55 ~ 65%; Cycle1 standard conditions according to ASTMG154-06 standard are tested, its strength retention more than 91%; According to AATCC100-2004 standard testing, its bacteriostasis rate can reach more than 99%; Various aspects of performance is all better than embodiment one.Visible, the composite nonwoven material of this example preparation possesses good gas permeability and barrier, and powerful high, and weather-proof antibiotic property is excellent.
Above content is the further description done the application in conjunction with concrete embodiment, can not assert that the concrete enforcement of the application is confined to these explanations.For the application person of an ordinary skill in the technical field, under the prerequisite not departing from the application's design, some simple deduction or replace can also be made, all should be considered as the protection domain belonging to the application.
Claims (10)
1. a composite nonwoven material, it is characterized in that: comprise at least two-layer PP viscose non-woven material layer, and PA6 or the PA66 electrostatic spinning nano fiber material layer be folded between two-layer PP viscose non-woven material layer, and the surface uniform of described composite nonwoven material is absorbed with ultra-violet absorber and antiseptic;
Further, clamp in the two-layer PP viscose non-woven material layer of PA6 or PA66 electrostatic spinning nano fiber material layer, the surface of at least one PP viscose non-woven material layer is coated with nano-titania photocatalyst coating.
2. composite nonwoven material according to claim 1, is characterized in that: the thickness of described PA6 or PA66 electrostatic spinning nano fiber material layer is 0.1-0.2mm, and average fibre diameter is 100-200nm, and average pore size is 0.5-1.0 μm.
3. composite nonwoven material according to claim 1 and 2, it is characterized in that: described ultra-violet absorber is the acrylate-based benzophenone of water-soluble 2-hydroxyl-4-or BP-4, and described antiseptic is CMC.
4. the preparation method of the composite nonwoven material according to any one of claim 1-3, is characterized in that: comprise the following steps,
(1) previously prepared one deck PP viscose non-woven material layer, in its surperficial coated with nano photocatalyst of titanium dioxide coating, forms the PP viscose non-woven material layer of photocatalyst coating;
(2) prepare another layer of PP viscose non-woven material layer again, be laid in aluminium sheet receiver surface, then carry out the electrostatic spinning of PA6 or PA66 on its surface, form PA6 or PA66 electrostatic spinning nano fiber material layer;
(3) stacked PA6 or the PA66 electrostatic spinning nano fiber material surface being combined in step (2) of PP viscose non-woven material adopting cross lapping mode to be applied by the photocatalyst of step (1), then applies ultra-violet absorber and antiseptic;
(4) hot rolling consolidation, forms described composite nonwoven material.
5. preparation method according to claim 4, is characterized in that: described step (1) is specially, and first evenly spreads in water by nano-titania photocatalyst, makes photocatalyst suspension; Then, when PP melt extrusion, photocatalyst suspension is atomized into droplet after being sprayed by nozzle, droplet is evenly attached to the PP bath surface extruded, utilize the heat of melt by the moisture evaporation in droplet, make nano titanium oxide evenly be attached to material surface and form coating, thus make the PP viscose non-woven material layer of nano-titania photocatalyst coating.
6. preparation method according to claim 5, is characterized in that: the size of described droplet is 5-10nm.
7. preparation method according to claim 4, it is characterized in that: described step (2) is specially, after described another layer of PP viscose non-woven material layer is laid in aluminium sheet receiver surface, first PA6 or PA66 resin slicer is dissolved the spinning solution obtaining 0.1-0.4g/ml in a solvent, spinning solution shower nozzle applies high pressure positive electricity, be covered with the aluminium sheet receiver ground connection of PP viscose non-woven material layer, electrostatic spinning is carried out to spinning solution, spinning solution rate of extrusion is 0.5-3ml/h, spinning voltage is 30-40KV, receiving range is 20-35cm, the fiber that electrostatic spinning is formed is received in PP viscose non-woven material layer surface, form PA6 or PA66 electrostatic spinning nano fiber material layer.
8. preparation method according to claim 7, is characterized in that: in described PA6 or PA66 electrostatic spinning nano fiber material layer, average fibre diameter is 100-200nm, and average pore size is 0.5-1.0 μm.
9. preparation method according to claim 7, is characterized in that: the PP viscose non-woven material layer being laid in aluminium sheet receiver surface, and its thickness is 0.3-0.4mm, and material grammes per square metre is 30-40g/m
2.
10. preparation method according to claim 4, is characterized in that: the method for coating ultra-violet absorber and antiseptic is in described step (3), and with ultra-violet absorber and antiseptic for sandwich layer, melting range is the paraffin of 52-58 DEG C is wall material; Prepare in container at microcapsules and form upper strata for hot water layer, lower floor is the reaction environment of cold water layer, and the temperature of hot water layer, higher than melting point of paraffin wax, is distributed to hot water layer paraffin, forms the paraffin of one deck hot melt on hot water layer surface; Ultra-violet absorber and antiseptic are dispersed in water, form core material solution; Core material solution being dropped onto microcapsules prepares in container, when core drop is by wax layer, the paraffin that surface coverage one deck is 70-100 μm, automatically be adjusted to spherical through hot water layer, condensed to the paraffin covered during cold water layer and hardened, being formed the microcapsule solution of parafilm wrap ultra-violet absorber and/or antiseptic; Microcapsule solution is evenly coated in the surface of laminated composite material; The last hot rolling by step (4) is by microcapsules, and ultra-violet absorber and the antiseptic of release are absorbed by non-woven material, form described composite nonwoven material.
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Effective date of registration: 20170831 Address after: 257000 Shandong city of Dongying province Dongying District Office Building No. 59 new street before hatching (B building) room 236 Patentee after: Dongying handsome Purification Technology Co., Ltd. Address before: 257091 No. 1278, South Road, Shandong, Dongying Patentee before: Shandong Jofo Non-woven Co., Ltd. |