WO2012159592A1 - Procédé permettant d'améliorer les propriétés hydrophobes d'une couche planaire de nanofibres polymères, couche de nanofibres polymères présentant des propriétés hydrophobes améliorées, et composite textile stratifié contenant une telle couche - Google Patents

Procédé permettant d'améliorer les propriétés hydrophobes d'une couche planaire de nanofibres polymères, couche de nanofibres polymères présentant des propriétés hydrophobes améliorées, et composite textile stratifié contenant une telle couche Download PDF

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Publication number
WO2012159592A1
WO2012159592A1 PCT/CZ2012/000041 CZ2012000041W WO2012159592A1 WO 2012159592 A1 WO2012159592 A1 WO 2012159592A1 CZ 2012000041 W CZ2012000041 W CZ 2012000041W WO 2012159592 A1 WO2012159592 A1 WO 2012159592A1
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WO
WIPO (PCT)
Prior art keywords
layer
hydrophobic agent
polymeric nanofibres
nanofibres
polymeric
Prior art date
Application number
PCT/CZ2012/000041
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English (en)
Inventor
Roman KNIZEK
Oldrich Jirsak
Jakub Wiener
Lubos Hes
Marie KOSKOVA
Filip Sanetrnik
Original Assignee
Technicka Univerzita V Liberci
Viola Nanotechnology S.R.O.
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Publication date
Application filed by Technicka Univerzita V Liberci, Viola Nanotechnology S.R.O. filed Critical Technicka Univerzita V Liberci
Publication of WO2012159592A1 publication Critical patent/WO2012159592A1/fr

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
    • 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
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • 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
    • D06M13/02—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with hydrocarbons
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • 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
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/007—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/02—Coating on the layer surface on 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
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/73—Hydrophobic
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2209/00—Properties of the materials
    • D06N2209/14—Properties of the materials having chemical properties
    • D06N2209/142—Hydrophobic

Definitions

  • the invention relates to a method of increasing hydrophobic properties of planar layer of polymeric nanofibres, by which a hydrophobic agent is applied to surface of the layer or into its entire structure.
  • the invention also relates to planar layer of polymeric nanofibres with increased hydrophobic properties.
  • the invention also relates to layered textile composite.
  • the goal of the invention is to remove or at least to eliminate disadvantages of the prior art by proposing a method of increasing hydrophobic properties of a layer of polymeric nanofibres, which would lead to increase its hydrostatic resistance, maintaining its very good permeability for vapour at the same time, and which would also secure protection of the layer of polymeric nanofibres from clogging with impurities.
  • the goal of the invention is achieved by employing the method according to the invention, the principle of which consists in that during applying of hydrophobic agent and/or after it, is on the layer of polymeric nanofibres acted from at least one side by a stream of air, which removes the hydrophobic agent from surface of the layer of polymeric nanofibres on this respective side into inter-fibrous spaces in its inner structure, while during this and/or after this is on the layer of polymeric nanofibres acted by increased temperature, which is lower than the melting temperature of the polymer of the nanofibres, as a result of which the hydrophobic agent contained in the layer dries out and coagulates, by means of which at least some inter-fibrous spaces of the layer of polymeric nanofibres are entirely filled up with the hydrophobic agent in solid state and polymeric nanofibres get fixed against mutual slipping.
  • the hydrostatic resistance of the planar layer of polymeric nanofibres is increased by several tens to hundreds of percent. Further increase of hydrostatic resistance can be achieved, if on the layer of polymeric nanofibres is acted by means of temperature, which is higher than the glassy temperature of polymer of the nanofibres, by means of which shrinking of the layer of polymeric nanofibres and the inter-fibrous spaces occur, causing their more effective filling.
  • the ! layer is either in stretched posture or, on the contrary, in loose posture, when the shrinkage rate is higher, when acted on it by the increased temperature.
  • Suitable carrying textile is for example bi-component spunbond comprising polypropylene fibres covered by polyethylene coating, because it allows thermal lamination with the layer of nanofibres to be performed without the necessity of additional applying of bonding agent.
  • hydrophobic agent In terms of applying , of hydrophobic agent to the layer of nanofibres and its subsequent removal into its inner structure, it is advantageous to apply the hydrophobic agent to the layer of polymeric nanofibres in the form of water emulsion, the viscosity of which is lower than the viscosity of the concentrated hydrophobic agent.
  • the goal of the invention is also achieved by means of planar layer of polymeric nanofibres with increased hydrophobic properties, the principle of which is based on entire filling of at least some of its inter-fibrous spaces with hydrophobic agent in solid state.
  • Suitable hydrophobic agent is agent based on silicone or fluor-carbon or paraffin. Further on, the goal of the invention is achieved by means of layered textile composite, the principle of which consists in that it contains at least one layer of polymeric nanofibres, at least some of inter-fibrous spaces of which are entirely filled with hydrophobic agent in solid state.
  • emulsion of a hydrophobic agent is applied to the layer of polymeric nanofibres in the first step, advantageously of hydrophobic agent based on silicone, fluor-carbon or other suitable material containing long hydrocarbon chains, e.g. paraffin, etc. in distilled water.
  • hydrophobic agent based on silicone, fluor-carbon or other suitable material containing long hydrocarbon chains, e.g. paraffin, etc. in distilled water.
  • Its application can be performed , by any known method, for example by immersing the layer of polymeric nanofibres into the emulsion, spraying the emulsion onto at least one of the surfaces of the layer of polymeric nanofibres, spreading it by means of rollers, etc.
  • the layer of polymeric nanofibres After application of the emulsion of the hydrophobic agent and/or during it is on the layer of polymeric nanofibres acted from at least one side by an air stream.
  • the air stream used as the carrying one for application of the emulsion of the hydrophobic agent by means of its spraying in the form of aerosol, or eventually at least one more supporting air stream can be used.
  • individual polymeric nanofibres are fixed by means of the solid hydrophobic agent preventing their mutual slipping, due to which the layer of polymeric nanofibres modified in that way is able to withstand significantly higher levels of hydrostatic load, compared to layers of polymeric nanofibres known in the prior art.
  • the increased temperature and/or duration of its action can be selected in order to provide simultaneous cross-linking of the hydrophobic agent, which results in further increase of the hydrostatic resistance already achieved.
  • the layer of polymeric nanofibres by means of temperature higher than the glassy temperature of the polymer of the nanofibres, as in that case simultaneous shrinking of the layer of polymeric nanofibres and size-reduction of the inter-fibrous spaces (pores) occur, and the pores are thus easily filled with the hydrophobic agent in solid state.
  • the rate of shrinking can be influenced not only by means of increased temperature and duration of its action, but also by that, if the layer is exposed to increased temperature in stretched posture, when the shrinkage rate occurring after its release is smaller or, on the contrary, by exposing it to the same condition in loose posture, achieving higher shrinkage rate.
  • filling the inter-fibrous spaces of the layer of polymeric nanofibres with the hydrophobic agent prevents them from being clogged with undesirable impurities, which could negatively influence the permeability of the layer of polymeric nanofibres for vapour and/or its impermeability for liquid water.
  • the layer of polymeric nanofibres which, due to increased pressure between the rollers, supports further penetration of the emulsion of the hydrophobic agent into the inter-fibrous spaces of the layer of polymeric nanofibres and their filling, simultaneously providing complete or at least partial dry-out of the emulsion.
  • final drying stage and/or cross-linking of the hydrophobic agent can follow, for example in a hot air chamber.
  • other devices can be employed, acting on the layer of polymeric nanofibres by means of pressure, such as foulard, etc.
  • the layer of polymeric nanofibres is advantageous for the intended applications, including in particular the use in textile industry, the layer of polymeric nanofibres to be as even as possible, breadthwise as well as lengthwise.
  • the highest evenness in both directions, can be currently achieved by employing device for electrostatic spinning, by which is the liquid polymer matrix spun in an electric field created between a collecting electrode and a spinning electrode of an oblong shape - for instance a cylinder (see e.g. EP 1673493) or a string (see e.g. EP 2059630 or EP 2173930).
  • This principle has been commercially applied in NanospiderTM technology of Elmarco company.
  • the layer of polymer nanofibres produced in this way is then subject to increase of its hydrophobic properties according to any of variants described above, either individually or in combination with carrying textile formed of a substrate textile onto which it has been deposited during electrostatic spinning, e.g. polypropylene spunbond. Thereat, it is advantageous to bind the layer of polymeric nanofibres to the substrate textile during deposition onto it or after that by means of lamination, using suitable bonding agent.
  • the layer of polymeric nanofibres deposited on the substrate textile transferred onto another suitable carrying textile, such as fabric or knitted fabric used for manufacture of outdoor clothing, either made of synthetic fibres (e.g. polyamide (PA), polyester (PES), etc.) or of natural fibres (e.g.
  • PA polyamide
  • PET polyester
  • natural fibres e.g.
  • the transfer can be performed by overlaying the layer of polymeric fibres with that carrying layer, their joining through lamination and subsequent removal of the original substrate textile.
  • suitable bonding agent which is applied to the carrying textile for example; by means of gravufe printing method, or which is embedded in it as part of its fibres or otherwise.
  • Example of the bonding agent embedded in the carrying textile is the bi-component spunbond, the fibres of which are made of polypropylene core covered by polyethylene coating, which melts during the lamination and thus binds the layer of polymeric nanofibres with that carrying textile.
  • the lamination of the layer of polymeric nanofibres with the carrying textile can be performed before the start of the process of increasing their hydrophobic properties or during it, during exposing the layer of polymeric nanofibres to increased temperature or after it.
  • the two-layer textile composite produced in that way is used as the upper layer of the outdoor textile, while its carrying textile forms its outer surface.
  • the layer of polymeric nanofibres from mechanical damage, especially abrasion, by supplementing the textile composite by suitable inner layer (inside lining) on the side of the open surface of the layer of polymeric nanofibres, which can be bound to it in case of need for example by means of lamination and/or suturation, or any other suitable method.
  • the two-layer or three-layer textile composite can be faced inside by the carrying textile, or supplemented by other textile or non-textile layers to achieve the required thickness and/or other parameters.
  • Suitable material of nanofibres is particularly polyamide 6 (PA 6), polyamide 6.6 (PA 6.6), polyurethane (PUR), polyvinyl alcohol (PVA), polyester (PES) or polyvinylidene fluoride (PVDF), etc., while their surface weight before application of the emulsion of the hydrophobic agent varies according to the needs and intended applications usually from 1 to 20 g/m 2 , or is even higher.
  • hydrophobic agents some of commercially available agents can be advantageously used, which is applied to the layer of polymeric fibres either in concentrated state or advantageously in the form of emulsion in (distilled) water, where, based on its nature, it can be optionally supplemented by organic acid, such as for example acetic acid, with suitable catalyst added for stabilization purposes, such as the C48 or C43 substances.. .
  • an emulsion of hydrophobic agent in distilled water containing 6 g of hydrophobic agent based on silicone, commercially available under designation LukofixTM, 0,1 ml of acetic acid and 1 ,5 g of C48 as a catalyst in 100 ml was applied from the side of layer of polymeric nanofibres by means of commercially available SATA minijet® spray- gun.
  • the application of the emulsion was performed under action of pressure of 5 bar, the spot of application on the layer of polymeric nanofibres having diameter of 1 cm, the movement of the spray-gun being tractive. Thereat, the quantity of 0,37 g of the emulsion was applied to 1 g of the layer of polymeric nanofibres.
  • the produced textile composite was exposed in the loose posture to a temperature of 160 °C for a period of 5 minutes in a hot air chamber, resulting in shrinking the layer of polymeric fibres by approx. 5%.
  • a two-layer textile composite was produced in the same manner as in example 1 and the same emulsion of LukofixTM hydrophobic agent was applied to it in the same way. However, the quantity of the emulsion applied to 1 g of the layer of polymeric nanofibres was 0,45 g. Further on, the composite was exposed to increased temperature in the same manner as in example 1.
  • a two-layer textile composite was produced in the same manner as in example 1.
  • An emulsion of hydrophobic agent in distilled water containing 12 g of hydrophobic agent based on silicone, commercially available under designation LukofixTM, 2 ml of acetic acid and 3 g of C48 as a catalyst in 00 ml was applied to it in the same manner. Thereat, the quantity of 0,06 g of the emulsion was applied to 1 g of the layer of polymeric nanofibres.
  • the composite prepared in that way was exposed to increased temperature in the same manner as in example 1. ,
  • a two-layer textile composite was produced in the same manner as in example 3, the same emulsion of Lukofix hydrophobic agent was applied to it in the same way. However, the quantity of the emulsion applied to 1 g of the layer of polymeric nanofibres was 0,08 g. Further on, the composite was exposed to increased temperature in the same manner as in example 3.
  • a two-layer textile composite was produced in the same manner as in example 3, the same emulsion of Lukofix hydrophobic agent was applied to it in the same way. However, the quantity of the emulsion applied to 1 g of the layer of polymeric nanofibres was 0,09 g. Further on, the composite was exposed to increased temperature in the same manner as in example 3.
  • a two-layer textile composite with layer of polymeric nanofibres of surface weight of 12 g/m 2 was produced in the same manner as in example 1.
  • An emulsion of hydrophobic agent was applied to it in the same manner as in example 3, with 0,08 g of the emulsion applied to 1 g of the layer of polymeric nanofibres. Further on, the composite was exposed to increased temperature in the same manner as in example 3. Achieved value of hydrostatic resistance of this composite was 11058 mm of water column.
  • a two-layer textile composite was produced in the same manner as in example 6, the same emulsion of Lukofix hydrophobic agent was applied to it in the same way. However, the quantity of the emulsion applied to 1 g of the layer of polymeric nanofibres was 0, 17 g. Further on, the composite was exposed to increased temperature in the same manner as in example 6.
  • a two-layer textile composite was produced in the same manner as in example 6, the same emulsion of Lukofix hydrophobic agent was applied to it in the same way. However, the quantity of the emulsion applied to 1 g of the layer of polymeric nanofibres was 0,21 g. Further on, the composite was exposed to increased temperature in the same manner as in example 6.
  • a two-layer textile composite was produced in the same manner as in example 3.
  • An emulsion of the same hydrophobic agent was applied to it by means of immersing it in a bath, while 0,17 g of the emulsion was applied to 1 g of the layer of polymeric nanofibres.
  • the prepared composite was passed through a foulard by speed of 1 m/s, where was acted on it by a pressure of 4 bar.
  • a two-layer textile ' composite was produced in the same manner as in example 6.
  • An emulsion of the same hydrophobic agent was applied to it in the same manner, the application was carried out until complete surface wetting of the layer of polymeric nanofibres by the emulsion was achieved. Thereat, the quantity of 0,09 g of the emulsion was applied to 1 g of the layer of polymeric nanofibres.
  • a two-layer textile composite was produced in the same manner as in example 1.
  • An emulsion of- hydrophobic agent in distilled water containing 50 g of hydrophobic agent based on fluorine-carbon, commercially available under designation NuvaTM in 100 ml was applied to it in the same manner. Thereat, the quantity of 0,24 g of the emulsion was applied to 1 g of the layer of polymeric nanofibres.
  • Hydrostatic resistance of produced textile composite was then measured in accordance with the European standard EN 811 , reaching the value of 7000 mm of water column in this case.
  • a layer of polymeric nanofibres of polyamide 6 (PA6) with surface weight of 12 g/m 2 deposited on the same substrate textile was produced.
  • An emulsion of hydrophobic agent in distilled water containing 50 g of the hydrophobic agent based on fluorine-carbon, commercially available under designation Sevophob NTFTM in 100 ml was applied to the textile composite in the same manner as in example 1. Thereat, the quantity of 0,24 g of the emulsion was applied to 1 g of the layer of polymeric nanofibres.
  • Hydrostatic resistance of produced textile composite was then measured in accordance with the European standard EN 811 , reaching the value of 6790 mm of water column in this case.
  • an emulsion of hydrophobic agent in distilled water containing 5 g of the hydrophobic agent based on fluorine- carbon, commercially available under designation NuvaTM, in 100 ml was applied from the side of layer of polymeric nanofibres by means of commercially available SATA minijet® spray-gun.
  • the application of the emulsion was performed under pressure of 5 bar, the spot of application on the layer of polymeric nanofibres having diameter of 1 cm.
  • the application was performed continually, the movement of the spray-gun being tractive.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

La présente invention concerne un procédé permettant d'améliorer les propriétés hydrophobes d'une couche planaire de nanofibres polymères. Selon ce procédé, un agent hydrophobe est appliqué à la surface de la couche ou dans toute sa structure; pendant l'application de l'agent hydrophobe, la couche de nanofibres polymères est activée depuis au moins un côté par l'intermédiaire d'au moins un flux d'air d'appui et/ou après l'application de l'agent hydrophobe, la couche de nanofibres polymères activée depuis au moins un côté par l'intermédiaire d'un flux d'air d'appui, l'agent hydrophobe est éliminé de la surface de la couche de nanofibres polymères sur son côté respectif dans les espaces entre les fibres dans sa structure interne. Pendant et/ou après l'application, la couche de nanofibres polymères est activée par une augmentation de la température qui est inférieure à la température de fusion du polymère des nanofibres, ce qui a pour effet de permettre audit agent hydrophobe de sécher et de coaguler, permettant ainsi à certains espaces entre les fibres d'être complètement rempli avec l'agent hydrophobe à l'état solide et d'empêcher les nanofibres polymères de glisser les unes par rapport aux autres. La présente invention concerne également une couche planaire de nanofibres polymères dont les propriétés hydrophobes ont été améliorées selon le procédé susmentionné, ainsi qu'un composite textile contenant une telle couche de nanofibres polymères.
PCT/CZ2012/000041 2011-05-23 2012-05-21 Procédé permettant d'améliorer les propriétés hydrophobes d'une couche planaire de nanofibres polymères, couche de nanofibres polymères présentant des propriétés hydrophobes améliorées, et composite textile stratifié contenant une telle couche WO2012159592A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZPV2011-306 2011-05-23
CZ20110306A CZ2011306A3 (cs) 2011-05-23 2011-05-23 Zpusob zvýšení hydrofobních vlastností plošné vrstvy polymerních nanovláken, vrstva polymerních nanovláken se zvýšenými hydrofobními vlastnostmi, a vrstvený textilní kompozit, který obsahuje takovou vrstvu

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WO2012159592A1 true WO2012159592A1 (fr) 2012-11-29

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016066149A1 (fr) * 2014-10-31 2016-05-06 Jan Beran Nanocomposite textile
CN106671498A (zh) * 2016-12-04 2017-05-17 杭州科百特过滤器材有限公司 一种输液用防水透气膜

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ307884B6 (cs) 2015-03-09 2019-07-24 Technická univerzita v Liberci Způsob pro výrobu textilního kompozitu zejména pro outdoorové aplikace, který obsahuje alespoň jednu vrstvu polymerních nanovláken, a tímto způsobem připravený textilní kompozit

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