EP3052698A1 - Pvdf textile article - Google Patents

Pvdf textile article

Info

Publication number
EP3052698A1
EP3052698A1 EP14787227.9A EP14787227A EP3052698A1 EP 3052698 A1 EP3052698 A1 EP 3052698A1 EP 14787227 A EP14787227 A EP 14787227A EP 3052698 A1 EP3052698 A1 EP 3052698A1
Authority
EP
European Patent Office
Prior art keywords
coating
layer
article
tetrafluoropropene
article according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP14787227.9A
Other languages
German (de)
French (fr)
Inventor
Jérôme CHAUVEAU
Benjamin KECH
Guenter SAPPELT
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Arkema France SA
Original Assignee
Arkema France SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Arkema France SA filed Critical Arkema France SA
Publication of EP3052698A1 publication Critical patent/EP3052698A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/244—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons
    • D06M15/256—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons containing fluorine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/18—Processes for applying liquids or other fluent materials performed by dipping
    • 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
    • D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
    • D06M23/10—Processes in which the treating agent is dissolved or dispersed in organic solvents; Processes for the recovery of organic solvents thereof
    • 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
    • D06N3/0006—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 using woven fabrics
    • 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
    • D06N3/0015—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 using fibres of specified chemical or physical nature, e.g. natural silk
    • 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
    • D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06N3/047—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds with fluoropolymers
    • 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
    • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/16—Synthetic fibres, other than mineral fibres
    • D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M2101/22—Polymers or copolymers of halogenated mono-olefins
    • 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
    • D06N2201/00—Chemical constitution of the fibres, threads or yarns
    • D06N2201/02—Synthetic macromolecular fibres
    • D06N2201/029—Fluoropolymer fibres
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/02—Moisture-responsive characteristics
    • D10B2401/021—Moisture-responsive characteristics hydrophobic
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/22—Physical properties protective against sunlight or UV radiation
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial
    • D10B2505/20—Industrial for civil engineering, e.g. geotextiles
    • D10B2505/204—Geotextiles

Definitions

  • the present invention relates to an architectural textile article or article covering polyvinylidene fluoride (PVDF), said article comprising a woven reinforcement and a coating.
  • PVDF polyvinylidene fluoride
  • An architectural textile or protective covering article is a fabric or a nonwoven fabric for the manufacture of various roofing or construction elements, eg shelters, mobile structures, textile buildings, partitions, tarpaulins, tents , stands, furniture, advertising screens, sun protection, ceilings and blinds.
  • various roofing or construction elements eg shelters, mobile structures, textile buildings, partitions, tarpaulins, tents , stands, furniture, advertising screens, sun protection, ceilings and blinds.
  • This type of textile material makes it possible to reduce the weight of the structures, to adapt to the constraints of space, brightness, climate and to meet the requirements of the current architecture in terms of freedom of shape, weather resistance and chemical resistance. , durability, fire protection and / or anti-UV.
  • PVC cloths known for their low weight are known, which makes it possible to design light structures intended in particular for textile fronts and stretch ceilings.
  • the PVC fabrics see a decrease in their mechanical properties over time, due to the phenomenon of exudation of the plasticizers present in the PVC-based formulations.
  • ETFE Poly (ethylene-co-tetrafluoroethylene)
  • a textile composite material for protecting the back of a solar cell.
  • Said material comprises a textile support which may be a fabric layer, a net, a fabric made of fibers or filaments or a ribbon, based on a fluorinated polymer such as PTFE, a fluorinated thermoplastic polymer such as PFA, MF A, FEP, ETFE, PVDF, THV and combinations thereof.
  • Said support is coated with a THV coating.
  • Said support is connected to the back of a solar cell by means of an elastic adhesive intermediate layer consisting of a fluorinated thermoplastic polymer selected from THV and VDF-based copolymers, or silicone-based copolymers capable of being fused such as polysiloxane / polyurea / polyurethane polymers.
  • a fluorinated thermoplastic polymer selected from THV and VDF-based copolymers, or silicone-based copolymers capable of being fused such as polysiloxane / polyurea / polyurethane polymers.
  • the examples described in this document show composite structures containing 2 or 3 layers, in which the PTFE backing layer, is coated with THV and connected to the solar cell by an intermediate layer of THV (Example 1) or copolymer-based polysiloxane (Example 3).
  • the present invention aims to overcome the disadvantages of the prior art.
  • one of the objectives of the present invention is to provide an architectural textile in the form of a composite structure: woven-coating background, having a long life, combined with good UV resistance and performance mechanical support woven unaltered by the coating.
  • the invention relates, according to a first aspect, to a textile article comprising a layer of PVDF homopolymer fiber fabric, said layer having a first face and a second face, said layer being coated on at least one of its faces with a coating comprising a copolymer of vinylidene fluoride (VDF) and a fluorinated comonomer.
  • VDF vinylidene fluoride
  • the invention relates to a method of manufacturing said textile article, said method comprising a step of applying, on at least one of the faces of said PVDF homopolymer layer, said VDF copolymer-based coating by a technique chosen from coating, spraying or soaking / impregnation.
  • the invention relates to the use of said textile article as an architectural textile, especially as a stretched canvas and as a protective tarpaulin.
  • the subject of the invention is a textile article comprising a layer consisting of a woven material.
  • This is a woven made with PVDF homopolymer multi-filaments having a title ranging from 400 dtex (48 filaments) up to 2380 dtex (96 filaments).
  • These homopolymer PVDF multi-filaments provide the textile article according to the invention with excellent mechanical strength as well as lightness compatible with its use in various architectural applications.
  • the multi PVDF homopolymer filaments used as woven layer using for example the product Kynar ® 705 marketed by the applicant, can be texturized and woven in all types of known technologies.
  • This woven fabric is coated with a coating based on a copolymer of vinylidene fluoride and a fluorinated comonomer.
  • the said fluorinated comonomer may be chosen from: vinyl fluoride; trifluoroethylene (VF3); chlorotrifluoroethylene (CTFE); bromotrifluoroethylene; 1,2-difluoroethylene; tetrafluoroethylene (TFE); hexafluoropropylene (HFP); perfluoro (alkyl vinyl) ethers such as perfluoro (methyl vinyl) ether (PMVE), perfluoro (ethyl vinyl) ether (PEVE) and perfluoro (propyl vinyl) ether (PPVE); perfluoro (1,3-dioxole); perfluoro (2,2- dimethyl-1,3-dioxole) (PDD), tetrafluoropropene, chlorotrifluoropropene; 3,3,3-
  • the above-mentioned fluorinated comonomer is chosen from chlorotrifluoroethylene (CTFE), hexafluoropropylene (HFP), trifluoroethylene (VF3), tetrafluoroethylene (TFE) and mixtures thereof.
  • CFE chlorotrifluoroethylene
  • HFP hexafluoropropylene
  • VF3 trifluoroethylene
  • TFE tetrafluoroethylene
  • the comonomer is advantageously the HFP.
  • the copolymer comprises only VDF and HFP.
  • the VDF / HFP copolymer has a level of HFP greater than 10%, preferably greater than 15%. This makes it possible to lower the bending modulus of the coating, which considerably increases the flexibility properties of the textile article according to the invention.
  • VDF / HFP of this type are for example those marketed by the Applicant under the name Kynar Flex ® 2500, 2750, 2800, 2900, 2950, and under the name Kynar ULTRAFLEX.
  • said copolymer is a random copolymer.
  • This type of copolymer has the advantage of having a homogeneous distribution of the comonomer along the vinylidene fluoride chains, unlike the so-called "heterogeneous" copolymers, which are characterized by a non-homogeneous distribution of the comonomer along the chains of vinylidene fluoride.
  • VDF due to the synthesis method described by the applicant for example in the document US 6,187,885.
  • the heterogeneous VDF / HFP copolymers described in this document are obtained in two stages, initially taking place the homopolymerization of the VDF monomer, followed in a second step by the polymerization of VDF with HFP, leading to obtaining isolated domains which are richer in comonomer in the copolymer thus prepared.
  • said coating is applied on a single side of said PVDF homopolymer layer.
  • said coating is applied on both sides of said PVDF homopolymer layer.
  • the thickness of the coating layer per face varies between 20 and 80 microns, preferably between 40 and 60 microns.
  • said coating comprises at least one additive chosen from: flame retardant fillers, conductive fillers, impact modifiers, inorganic thermal stabilizers, organic and inorganic UV stabilizers.
  • flame retardant fillers e.g., boron trifluoride
  • conductive fillers e.g., boron nitride
  • impact modifiers e.g., titanium dioxide
  • inorganic thermal stabilizers e.g., titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, titanium dioxide, magnesium, magnesium magnesium magnesium magnesium magnesium magnesium magnesium magnesium magnesium magnesium magnesium magnesium magnesium magnesium magnesium
  • the textile article according to the invention consists of a layer of PVDF homopolymer fiber fabric, said layer being coated on at least one of its faces with a coating based on a copolymer of VDF and of a fluorinated comonomer.
  • the invention relates to a method of manufacturing said textile article, said method comprising a step of applying, on at least one of the faces of said PVDF homopolymer layer, said VDF copolymer-based coating by a technique chosen from coating, spraying or soaking / impregnation. These techniques make it possible to apply the coating both to the surface of the multi-filament fibers of PVDF homopolymer, and between these fibers.
  • the coating of PVDF copolymer may be applied either in aqueous or solvent route, with the known solvents of PVDF such as those of the family of ketones, of the ethyl methyl ketone (MEK) or methylisobuiyicone (MIBK) type, those of the family of sulfonates of the dimethylsulfoxide type (DMSO) or those of the family of ethyl acetate type ethers, di-ethyl glycol, di-ethyl acetate.
  • the known solvents of PVDF such as those of the family of ketones, of the ethyl methyl ketone (MEK) or methylisobuiyicone (MIBK) type, those of the family of sulfonates of the dimethylsulfoxide type (DMSO) or those of the family of ethyl acetate type ethers, di-ethyl glycol, di-ethyl acetate.
  • the application of the coating by means of the abovementioned techniques has the advantage of making it possible to easily adjust the thicknesses of the coating and to ensure better compatibility between the PVDF fibers and the coating layer (s) due to the chemical nature of the polymers.
  • the invention relates to the use of said textile article as an architectural textile, particularly as a stretched canvas. Such an article is particularly suitable for various applications in this field, and has one or more of the following properties:
  • Example 1 according to the invention
  • a textile article according to the invention was prepared from a layer of woven multifilament homopolymer PVDF (KYNAR ® PVDF 705) having a titre of 550 dtex (96filaments). This nonwoven layer was coated by a coating comprising a VDF / HFP copolymer (Kynar Flex ® 2500-20) previously dissolved in a mixture of MEK and ethyl acetate.
  • the coating formulation contains the following components (per 100 g):
  • solvent MEK
  • This formulation is deposited in liquid on both sides of the fabric using a device type coating. After evaporation of the solvent (air drying or a few minutes at 60 ° C), the coating on each side is about 15 microns and is present between the fibers that make up the fabric. The final thickness of 50 microns was obtained after three successive sprays.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

The present invention relates to an architectural textile article or protective tarpaulin article based on polyvinylidene fluoride (PVDF), said article comprising a woven reinforcement and a coating. More specifically, the invention relates to a textile article comprising a layer of woven fabric made of PVDF homopolymer fibres, said layer having a first face and a second face, said layer being coated on at least one of the faces thereof with a coating comprising a copolymer of vinylidene fluoride (VDF) and of a fluorinated comonomer.

Description

ARTICLE TEXTILE EN PVDF  TEXTILE ARTICLE IN PVDF
DOMAINE DE L'INVENTION FIELD OF THE INVENTION
La présente invention concerne un article textile architectural ou article bâche de protection à base de polyfluorure de vinylidène (PVDF), ledit article comprenant un renfort tissé et un revêtement.  The present invention relates to an architectural textile article or article covering polyvinylidene fluoride (PVDF), said article comprising a woven reinforcement and a coating.
Un textile architectural ou article bâche de protection est un tissu ou un non tissé destiné à la confection de divers éléments de couverture ou de construction, par exemple d'abris, de structures mobiles, de bâtiments textiles, de cloisons, de bâches, de tentes, de stands, de mobiliers, d'écrans publicitaires, de protections solaires, de plafonds et de stores.  An architectural textile or protective covering article is a fabric or a nonwoven fabric for the manufacture of various roofing or construction elements, eg shelters, mobile structures, textile buildings, partitions, tarpaulins, tents , stands, furniture, advertising screens, sun protection, ceilings and blinds.
Ce type de matériau textile permet de réduire le poids des structures, de s'adapter aux contraintes d'espace, de luminosité, climatiques et de répondre aux exigences de l'architecture actuelle en termes de liberté des formes, de résistance aux intempéries et chimique, de durabilité, de protection anti-feu et/ou anti-UV.  This type of textile material makes it possible to reduce the weight of the structures, to adapt to the constraints of space, brightness, climate and to meet the requirements of the current architecture in terms of freedom of shape, weather resistance and chemical resistance. , durability, fire protection and / or anti-UV.
ARRIERE-PLAN TECHNIQUE TECHNICAL BACKGROUND
On connaît des toiles en polychlorure de vinyle (PVC) réputées pour leur poids faible ce qui permet de concevoir des structures légères destinées notamment aux façades textiles et aux plafonds tendus. Cependant, les toiles en PVC voient une diminution de leurs propriétés mécaniques au cours du temps, en raison du phénomène d'exsudation des plastifiants présents dans les formulations à base de PVC.  Polyvinyl chloride (PVC) cloths known for their low weight are known, which makes it possible to design light structures intended in particular for textile fronts and stretch ceilings. However, the PVC fabrics see a decrease in their mechanical properties over time, due to the phenomenon of exudation of the plasticizers present in the PVC-based formulations.
Le poly(éthylène-co-tétrafluoroéthyléne) (ETFE) est un autre matériau utilisé comme textile architectural. Ses caractéristiques techniques sont notamment la transparence aux rayons UV, la résistance à l'usure et aux températures extrêmes. Ce matériau n'est cependant pas suffisamment souple et léger ce qui limite le nombre de ses applications.  Poly (ethylene-co-tetrafluoroethylene) (ETFE) is another material used as an architectural textile. Its technical characteristics include transparency to UV rays, resistance to wear and extreme temperatures. This material is however not sufficiently flexible and light which limits the number of its applications.
D'autres textiles architecturaux, plus souples, sont obtenus par l'application d'un revêtement en PVC, revêtu ou non d'un acrylique, sur un textile en polyester. La durabilité de ces matériaux est toutefois limitée. Le document US 8,349,747 décrit un textile architectural comprenant plusieurs segments, chaque segment comprenant un fond de fibres d'ETFE expansé et un revêtement en PVDF ou PTFE appliqué sur lesdites fibres. L'exemple 1 de ce document décrit un matériau composite formé d'un fond en PTFE expansé, sur lequel un revêtement, consistant en un copolymère de fluorure de vinylidène (VDF) et hexafluoropropène (HFP), a été appliqué par lamination. Ce copolymère VDF-HFP, commercialisé par la société Arkema Inc. sous la référence Kynar® 3120-10, est un copolymère hétérogène contenant moins de 10% en poids de HFP, conférant audit revêtement un caractère rigide, qui le rend inapte pour certaines applications architecturales. Other architectural textiles, more flexible, are obtained by the application of a coating of PVC, coated or not with an acrylic, on a polyester textile. The durability of these materials is however limited. US 8,349,747 discloses an architectural fabric comprising a plurality of segments, each segment comprising an expanded ETFE fiber backing and a PVDF or PTFE coating applied to said fibers. Example 1 of this document describes a composite material formed of an expanded PTFE bottom, on which a coating, consisting of a copolymer of vinylidene fluoride (VDF) and hexafluoropropene (HFP), was applied by lamination. This VDF-HFP copolymer, sold by Arkema Inc. under the reference Kynar® 3120-10, is a heterogeneous copolymer containing less than 10% by weight of HFP, giving said coating a rigid character, which makes it unsuitable for certain applications. architectural.
Le document DE 20 2011 109461 décrit un matériau composite textile destiné à protéger l'arrière d'une cellule solaire. Ledit matériau comprend un support textile qui peut être une couche de tissu, un filet, un tissu fait en fibres ou filaments ou encore un ruban, à base d'un polymère fluoré tel que le PTFE, un polymère thermoplastique fluoré tel que PFA, MF A, FEP, ETFE, PVDF, THV et leurs combinaisons. Ledit support est enduit d'un revêtement en THV. Ledit support est relié à l'arrière d'une cellule solaire au moyen d'une couche intermédiaire adhésive élastique consistant en un polymère thermoplastique fluoré choisi parmi le THV et les copolymères à base de VDF, ou les copolymères à base de silicone aptes à être transformés en fusion tels que les polymères polysiloxanes/polyurée/polyuréthane. Les exemples décrits dans ce document montrent des structures composites contenant 2 ou 3 couches, dans lesquelles la couche support en PTFE, est enduite avec du THV et reliée à la cellule solaire par une couche intermédiaire en THV (exemple 1) ou en copolymère à base de polysiloxane (exemple 3).  DE 20 2011 109461 discloses a textile composite material for protecting the back of a solar cell. Said material comprises a textile support which may be a fabric layer, a net, a fabric made of fibers or filaments or a ribbon, based on a fluorinated polymer such as PTFE, a fluorinated thermoplastic polymer such as PFA, MF A, FEP, ETFE, PVDF, THV and combinations thereof. Said support is coated with a THV coating. Said support is connected to the back of a solar cell by means of an elastic adhesive intermediate layer consisting of a fluorinated thermoplastic polymer selected from THV and VDF-based copolymers, or silicone-based copolymers capable of being fused such as polysiloxane / polyurea / polyurethane polymers. The examples described in this document show composite structures containing 2 or 3 layers, in which the PTFE backing layer, is coated with THV and connected to the solar cell by an intermediate layer of THV (Example 1) or copolymer-based polysiloxane (Example 3).
La présente invention vise à remédier aux inconvénients de l'art antérieur. The present invention aims to overcome the disadvantages of the prior art.
Dans cette perspective, l'un des objectifs de la présente invention est de proposer un textile architectural sous forme d'une structure composite : fond tissé-revêtement, présentant une longue durée de vie, combinée à une bonne résistance aux UV et à des performances mécaniques du support tissé non altérées par le revêtement. In this perspective, one of the objectives of the present invention is to provide an architectural textile in the form of a composite structure: woven-coating background, having a long life, combined with good UV resistance and performance mechanical support woven unaltered by the coating.
RESUME DE L'INVENTION SUMMARY OF THE INVENTION
A cet effet, l'invention concerne, selon un premier aspect, un article textile comprenant une couche de tissu en fibres de PVDF homopolymère, ladite couche ayant une première face et une seconde face, ladite couche étant enduite sur au moins une de ses faces d'un revêtement comprenant un copolymère de fluorure de vinylidène (VDF) et d'un comonomère fluoré. For this purpose, the invention relates, according to a first aspect, to a textile article comprising a layer of PVDF homopolymer fiber fabric, said layer having a first face and a second face, said layer being coated on at least one of its faces with a coating comprising a copolymer of vinylidene fluoride (VDF) and a fluorinated comonomer.
Selon un autre aspect, l'invention a trait à un procédé de fabrication dudit article textile, ledit procédé comprenant une étape d'application, sur au moins une des faces de ladite couche de PVDF homopolymère, dudit revêtement à base de copolymère de VDF par une technique choisie parmi l'enduction, la pulvérisation ou le trempage/imprégnation.  According to another aspect, the invention relates to a method of manufacturing said textile article, said method comprising a step of applying, on at least one of the faces of said PVDF homopolymer layer, said VDF copolymer-based coating by a technique chosen from coating, spraying or soaking / impregnation.
Selon encore un autre aspect, l'invention concerne l'utilisation dudit article textile comme textile architectural, notamment comme toile tendue et comme bâche de protection.  According to yet another aspect, the invention relates to the use of said textile article as an architectural textile, especially as a stretched canvas and as a protective tarpaulin.
DESCRIPTION DE MODES DE REALISATION DE L'INVENTION DESCRIPTION OF EMBODIMENTS OF THE INVENTION
L'invention est maintenant décrite plus en détail et de façon non limitative dans la description qui suit.  The invention is now described in more detail and without limitation in the description which follows.
L'invention se propose de fournir un nouveau matériau composite apte à être employé comme textile architectural. Selon un premier aspect, l'invention a pour objet un article textile comprenant une couche consistant en un matériau tissé. Il s'agit d'un tissé fait avec des multi- filaments de PVDF homopolymère ayant un titre allant de 400 dtex (48 filaments) jusqu'à 2380 dtex (96 filaments). Ces multi- filaments de PVDF homopolymère assurent à l'article textile selon l'invention une excellente résistance mécanique ainsi qu'une légèreté compatible avec son utilisation dans diverses applications architecturales.  The invention proposes to provide a new composite material suitable for use as an architectural textile. According to a first aspect, the subject of the invention is a textile article comprising a layer consisting of a woven material. This is a woven made with PVDF homopolymer multi-filaments having a title ranging from 400 dtex (48 filaments) up to 2380 dtex (96 filaments). These homopolymer PVDF multi-filaments provide the textile article according to the invention with excellent mechanical strength as well as lightness compatible with its use in various architectural applications.
Les multi- filaments de PVDF homopolymère utilisés comme couche tissée, employant par exemple le produit Kynar® 705 commercialisé par la demanderesse, peuvent être texturisées et tissées selon tous les types de technologies connues. The multi PVDF homopolymer filaments used as woven layer, using for example the product Kynar ® 705 marketed by the applicant, can be texturized and woven in all types of known technologies.
Ce textile tissé est enduit par un revêtement à base d'un copolymère de fluorure de vinylidène et d'un comonomère fluoré. Ledit comonomère fluoré peut être choisi parmi : le fluorure de vinyle; le trifluoroéthylène (VF3); le chlorotrifluoroethylène (CTFE); bromotrifluoroéthylène ; le 1 ,2-difluoroéthylène; le tetrafluoroéthylène (TFE); l'hexafluoropropylène (HFP); les perfluoro(alkyl vinyl) éthers tels que le perfluoro(méthyl vinyl)éther (PMVE), le perfluoro(éthyl vinyl) éther (PEVE) et le perfluoro(propyl vinyl) éther (PPVE); le perfluoro(l,3-dioxole); le perfluoro(2,2- diméthyl-l ,3-dioxole) (PDD), tétrafluoropropène, chlorotrifiuoropropène ; 3,3,3- trifluoropropène ; pentafluoropropène ; 2-chloro-3,3,3-trifluoropropène ; le produit de formule CF2=CF0CF2CF(CF3)OCF2CF2X dans laquelle X est S02F, C02H, CH2OH; CH2OCN ou CH2OP03H, le produit de formule CF2=CFOCF2CF2S02F; le produit de formule F(CF2)nCH2OCF=CF2 dans laquelle n est égal à 1 ,2,3,4 ou 5 ; le produit de formule RiCH2OCF=CF2 dans laquelle Ri est l'hydrogène ou F(CF2)Z et z vaut 1 , 2, 3, ou 4; le produit de formule R3OCF=CH2 dans laquelle R3 est F(CF2)Z et z vaut 1 , 2, 3, ou 4 ; perfiuorobutyléthylène (PFBE) ; fluoroéthylènepropylène (FEP) ; 2 trifluoromethyl-3,3,3-trifluoro-l-propène ; 2,3,3,3-tétrafiuoropropène ou HFO-1234yf ; E-l ,3,3,3-tetrafiuoropropène ou HFO-1234zeE ; Z-l ,3,3,3-tétrafiuoropropène ou HFO- 1234zeZ ; 1 , 1 ,2,3-tétrafiuoropropene ou HFO-1234yc ; 1 ,2,3,3-tétrafiuoropropène ou HFO-1234ye ; 1 , 1 ,3,3-tétrafiuoropropène ou HFO-1234zc ; chlorotétrafiuoropropène ou HCFO-1224. This woven fabric is coated with a coating based on a copolymer of vinylidene fluoride and a fluorinated comonomer. The said fluorinated comonomer may be chosen from: vinyl fluoride; trifluoroethylene (VF3); chlorotrifluoroethylene (CTFE); bromotrifluoroethylene; 1,2-difluoroethylene; tetrafluoroethylene (TFE); hexafluoropropylene (HFP); perfluoro (alkyl vinyl) ethers such as perfluoro (methyl vinyl) ether (PMVE), perfluoro (ethyl vinyl) ether (PEVE) and perfluoro (propyl vinyl) ether (PPVE); perfluoro (1,3-dioxole); perfluoro (2,2- dimethyl-1,3-dioxole) (PDD), tetrafluoropropene, chlorotrifluoropropene; 3,3,3-trifluoropropene; pentafluoropropene; 2-chloro-3,3,3-trifluoropropene; the product of formula CF 2 = CFOCF 2 CF (CF 3 ) OCF 2 CF 2 X in which X is SO 2 F, CO 2 H, CH 2 OH; CH 2 OCN or CH 2 OPO 3 H, the product of formula CF 2 = CFOCF 2 CF 2 SO 2 F; the product of formula F (CF 2 ) n CH 2 OCF = CF 2 in which n is 1, 2,3,4 or 5; the product of formula RiCH 2 OCF = CF 2 in which R 1 is hydrogen or F (CF 2 ) Z and z is 1, 2, 3, or 4; the product of formula R 3 OCF = CH 2 in which R 3 is F (CF 2 ) Z and z is 1, 2, 3, or 4; perfluorobutylethylene (PFBE); fluoroethylenepropylene (FEP); Trifluoromethyl-3,3,3-trifluoro-1-propene; 2,3,3,3-tetrafluoropropene or HFO-1234yf; EI, 3,3,3-tetrafiuoropropene or HFO-1234zeE; ZI, 3,3,3-tetrafluoropropene or HFO-1234zeZ; 1, 1, 2,3-tetrafluoropropene or HFO-1234yc; 1,2,3,3-tetrafluoropropene or HFO-1234ye; 1, 1, 3,3-tetrafluoropropene or HFO-1234zc; chlorotetrafluoropropene or HCFO-1224.
De préférence le comonomère fluoré précité est choisi parmi le chlorotrifluoroéthylène (CTFE), l'hexafluoropropylène (HFP), le trifluoroéthylène (VF3), le tétrafiuoroéthylène (TFE) et leurs mélanges.  Preferably, the above-mentioned fluorinated comonomer is chosen from chlorotrifluoroethylene (CTFE), hexafluoropropylene (HFP), trifluoroethylene (VF3), tetrafluoroethylene (TFE) and mixtures thereof.
Le comonomère est avantageusement l'HFP. De préférence, le copolymère ne comprend que du VDF et de l'HFP.  The comonomer is advantageously the HFP. Preferably, the copolymer comprises only VDF and HFP.
Selon un mode de réalisation préféré, le copolymère VDF/HFP présente un taux d'HFP supérieur à 10%, de préférence supérieur à 15%. Ceci permet d'abaisser le module de flexion du revêtement, ce qui augmente considérablement les propriétés de souplesse de l'article textile selon l'invention. Des copolymères VDF/HFP de ce type sont par exemple ceux commercialisés par la demanderesse sous le nom KYNAR® Flex 2500, 2750, 2800, 2900, 2950 et sous le nom Kynar ULTRAFLEX. According to a preferred embodiment, the VDF / HFP copolymer has a level of HFP greater than 10%, preferably greater than 15%. This makes it possible to lower the bending modulus of the coating, which considerably increases the flexibility properties of the textile article according to the invention. Of VDF / HFP of this type are for example those marketed by the Applicant under the name Kynar Flex ® 2500, 2750, 2800, 2900, 2950, and under the name Kynar ULTRAFLEX.
Selon un mode de réalisation, ledit copolymère est un copolymère statistique. Ce type de copolymère présente l'avantage de présenter une répartition homogène du comonomère le long des chaînes de fluorure de vinylidène, à la différence des copolymères dits « hétérogènes », qui se caractérisent par une distribution non- homogène du comonomère le long des chaînes de VDF, due au procédé de synthèse décrit par la demanderesse par exemple dans le document US 6,187,885. Les copolymères VDF/HFP hétérogènes décrits dans ce document sont obtenus en deux étapes, dans un premier temps ayant lieu l'homopolymérisation du monomère VDF, suivie dans un second temps par la polymérisation du VDF avec l'HFP, conduisant à l'obtention de domaines isolés plus riches en comonomère dans le copolymère ainsi préparé. According to one embodiment, said copolymer is a random copolymer. This type of copolymer has the advantage of having a homogeneous distribution of the comonomer along the vinylidene fluoride chains, unlike the so-called "heterogeneous" copolymers, which are characterized by a non-homogeneous distribution of the comonomer along the chains of vinylidene fluoride. VDF, due to the synthesis method described by the applicant for example in the document US 6,187,885. The heterogeneous VDF / HFP copolymers described in this document are obtained in two stages, initially taking place the homopolymerization of the VDF monomer, followed in a second step by the polymerization of VDF with HFP, leading to obtaining isolated domains which are richer in comonomer in the copolymer thus prepared.
Selon un mode de réalisation, ledit revêtement est appliqué sur une seule face de ladite couche en PVDF homopolymère.  According to one embodiment, said coating is applied on a single side of said PVDF homopolymer layer.
Selon un autre mode de réalisation, ledit revêtement est appliqué sur les deux faces de ladite couche en PVDF homopolymère.  According to another embodiment, said coating is applied on both sides of said PVDF homopolymer layer.
Dans les deux cas, l'épaisseur de la couche de revêtement par face varie entre 20 et 80 microns, de préférences entre 40 et 60 microns.  In both cases, the thickness of the coating layer per face varies between 20 and 80 microns, preferably between 40 and 60 microns.
Selon un mode de réalisation, ledit revêtement comprend au moins un additif choisi parmi : les charges ignifuges, les charges conductrices, les modifiants chocs, les stabilisants thermiques inorganiques, les stabilisants UV organiques et inorganiques. La présence de ces additifs permet d'améliorer sélectivement certaines propriétés du revêtement comme la tenue au feu ou la résistance aux rayonnements UV et aux intempéries.  According to one embodiment, said coating comprises at least one additive chosen from: flame retardant fillers, conductive fillers, impact modifiers, inorganic thermal stabilizers, organic and inorganic UV stabilizers. The presence of these additives makes it possible to selectively improve certain properties of the coating such as fire resistance or resistance to UV radiation and weathering.
Selon un mode de réalisation, l'article textile selon l'invention consiste en une couche de tissu en fibres de PVDF homopolymère, ladite couche étant enduite sur au moins une de ses faces d'un revêtement à base de copolymère de VDF et d'un comonomère fluoré.  According to one embodiment, the textile article according to the invention consists of a layer of PVDF homopolymer fiber fabric, said layer being coated on at least one of its faces with a coating based on a copolymer of VDF and of a fluorinated comonomer.
Selon un deuxième aspect, l'invention a trait à un procédé de fabrication dudit article textile, ledit procédé comprenant une étape d'application, sur au moins une des faces de ladite couche de PVDF homopolymère, dudit revêtement à base de copolymère de VDF par une technique choisie parmi l'enduction, la pulvérisation ou le trempage/imprégnation. Ces techniques permettent d'appliquer le revêtement aussi bien à la surface des fibres multi- filaments de PVDF homopolymère, qu'entre ces fibres.  According to a second aspect, the invention relates to a method of manufacturing said textile article, said method comprising a step of applying, on at least one of the faces of said PVDF homopolymer layer, said VDF copolymer-based coating by a technique chosen from coating, spraying or soaking / impregnation. These techniques make it possible to apply the coating both to the surface of the multi-filament fibers of PVDF homopolymer, and between these fibers.
Le revêtement de PVDF copolymère pourra être appliqué soit en voie aqueuse, soit en voie solvant, avec les solvants connus du PVDF comme par exemple ceux de la famille des cétones, du type éthyl méthyl cétone (MEK) ou méthylisobuiyicéÏone (MIBK), ceux de la famille des sulfones du type dirnéthylsuifoxyde (DMSO) ou ceux de la famille des éthers du type acétate d' éthyl, di-éthyl glycol, di-éthyl acétate.  The coating of PVDF copolymer may be applied either in aqueous or solvent route, with the known solvents of PVDF such as those of the family of ketones, of the ethyl methyl ketone (MEK) or methylisobuiyicone (MIBK) type, those of the family of sulfonates of the dimethylsulfoxide type (DMSO) or those of the family of ethyl acetate type ethers, di-ethyl glycol, di-ethyl acetate.
L'application du revêtement au moyen des techniques précitées présente l'avantage de permettre d'ajuster facilement les épaisseurs du revêtement et d'assurer une meilleure compatibilité entre les fibres de PVDF et la ou les couches de revêtement de par la nature chimique des polymères utilisés. Selon un autre aspect, l'invention concerne l'utilisation dudit article textile comme textile architectural, notamment comme toile tendue. Un tel article convient particulièrement bien aux diverses applications dans ce domaine, et présente une ou plusieurs des propriétés suivantes : The application of the coating by means of the abovementioned techniques has the advantage of making it possible to easily adjust the thicknesses of the coating and to ensure better compatibility between the PVDF fibers and the coating layer (s) due to the chemical nature of the polymers. used. According to another aspect, the invention relates to the use of said textile article as an architectural textile, particularly as a stretched canvas. Such an article is particularly suitable for various applications in this field, and has one or more of the following properties:
- performances mécaniques du tissé non altérées par le revêtement, - mechanical performance of the woven unaltered by the coating,
- bonne résistance aux UV,  - good resistance to UV,
- bonne imperméabilité à l'eau,  - good waterproofness,
- bonne facilité de nettoyage et bonnes performances en termes d'élimination du biofïlm,  - good cleaning ability and good performance in terms of biofilm removal,
- bonne tenue feu, - good fire behavior,
- bonne soudabilité,  - good weldability,
- bonne résistance à la déchirure.  - good resistance to tearing.
EXEMPLES EXAMPLES
L'exemple suivant illustre l'invention sans la limiter. Exemple 1 selon l'invention The following example illustrates the invention without limiting it. Example 1 according to the invention
Un article textile selon l'invention a été préparé à partir d'une couche de tissé multi- filaments en PVDF homopolymère (KYNAR® PVDF 705) ayant un titre de 550 dtex (96filaments). Cette couche tissée a été enduite par un revêtement comprenant un copolymère VDF/HFP (Kynar Flex® 2500-20) préalablement mis en solution dans un mélange de MEK et acétate d'éthyle. A textile article according to the invention was prepared from a layer of woven multifilament homopolymer PVDF (KYNAR ® PVDF 705) having a titre of 550 dtex (96filaments). This nonwoven layer was coated by a coating comprising a VDF / HFP copolymer (Kynar Flex ® 2500-20) previously dissolved in a mixture of MEK and ethyl acetate.
La formulation de revêtement contient les composants suivants (pour 100 g) :  The coating formulation contains the following components (per 100 g):
- Kynarfiex 2501-20 5,5 g,  - Kynarfiex 2501-20 5.5 g,
- MEK 25 g,  - MEK 25 g,
- Acétate d'éthyle 5 g,  - ethyl acetate 5 g,
- Copolymère acrylique à 40% dans MEK 5,9 g  - 40% Acrylic Copolymer in MEK 5.9 g
Le restant jusqu'à 100 g est complété avec du solvant (MEK) en fonction de la viscosité finale visée et la technique d'application (enduction, pulvérisation ou trempage/ imprégnation) . The remainder up to 100 g is supplemented with solvent (MEK) depending on the target final viscosity and the application technique (coating, spraying or soaking / impregnation).
Cette formulation est déposée en voie liquide sur les deux faces du tissu à l'aide d'un dispositif de type enduction. Après évaporation du solvant (séchage à l'air ou quelques minutes à 60°C), le revêtement sur chaque face mesure environ 15 microns et est présent entre les fibres qui composent le tissu. L'épaisseur finale de 50 microns a été obtenue après trois pulvérisations successives. This formulation is deposited in liquid on both sides of the fabric using a device type coating. After evaporation of the solvent (air drying or a few minutes at 60 ° C), the coating on each side is about 15 microns and is present between the fibers that make up the fabric. The final thickness of 50 microns was obtained after three successive sprays.

Claims

REVENDICATIONS
Article textile comprenant une couche de tissu en fibres de PVDF homopolymère, ladite couche ayant une première face et une seconde face, ladite couche étant enduite sur au moins une de ses faces d'un revêtement comprenant un copolymère de fluorure de vinylidène (VDF) et d'un comonomère fluoré. A textile article comprising a layer of PVDF homopolymer fiber fabric, said layer having a first side and a second side, said layer being coated on at least one side thereof with a coating comprising a copolymer of vinylidene fluoride (VDF) and of a fluorinated comonomer.
Article selon la revendication 1 dans lequel lesdites fibres de PVDF homopolymère sont des multi- filaments comprenant de 48 à 96 filaments et ayant un titre compris entre 400 et 2380 dtex.  An article according to claim 1 wherein said homopolymeric PVDF fibers are multi-filaments comprising from 48 to 96 filaments and having a titer between 400 and 2380 dtex.
Article selon l'une des revendications 1 ou 2 dans lequel ledit revêtement recouvre les deux faces de la couche en PVDF homopolymère.  Article according to one of claims 1 or 2 wherein said coating covers both sides of the PVDF homopolymer layer.
Article selon l'une des revendications 1 à 3 dans lequel ledit copolymère est un copolymère statistique. Article according to one of claims 1 to 3 wherein said copolymer is a random copolymer.
Article selon l'une des revendications 1 à 4 dans lequel ledit comonomère fluoré est choisi parmi : le fluorure de vinyle; le trifluoroéthylène (VF3); le chlorotrifluoroethylène (CTFE); bromotrifluoroéthylène ; le 1,2- difluoroéthylène; le tetrafluoroéthylène (TFE); l'hexafluoropropylène (HFP); les perfluoro(alkyl vinyl) éthers tels que le perfluoro(méthyl vinyl)éther (PMVE), le perfluoro(éthyl vinyl) éther (PEVE) et le perfluoro(propyl vinyl) éther (PPVE); le perfluoro(l,3-dioxole); le perfluoro(2,2-diméthyl-l,3-dioxole) (PDD), tétrafluoropropène, chlorotrifluoropropène ; 3,3,3-trifluoropropène ; pentafluoropropène ; 2-chloro-3,3,3-trifluoropropène ; le produit de formule CF2=CF0CF2CF(CF3)OCF2CF2X dans laquelle X est S02F, C02H, CH2OH; CH2OCN ou CH2OP03H, le produit de formule CF2=CFOCF2CF2S02F; le produit de formule F(CF2)nCH2OCF=CF2 dans laquelle n est égal à 1,2,3,4 ou 5 ; le produit de formule RiCH2OCF=CF2 dans laquelle Ri est l'hydrogène ou F(CF2)Z et z vaut 1, 2, 3, ou 4; le produit de formule R3OCF=CH2 dans laquelle R3 est F(CF2)Z et z vaut 1, 2, 3, ou 4 ; perfluorobutyléthylène (PFBE) ; fluoroéthylènepropylène (FEP) ; 2 trifluoromethyl-3,3,3-trifluoro-l-propène ; 2,3,3,3-tétrafluoropropène ou HFO-1234yf ; E-l,3,3,3-tetrafluoropropène ou HFO-1234zeE ; Z-l,3,3,3-tétrafluoropropène ou HFO-1234zeZ ; 1,1,2,3- tétrafluoropropene ou HFO-1234yc ; 1,2,3, 3-tétrafluoropropène ou HFO- 1234ye ; 1,1, 3, 3-tétrafluoropropène ou HFO-1234zc ; chlorotétrafluoropropène ou HCFO-1224. Article according to one of claims 1 to 4 wherein said fluorinated comonomer is selected from: vinyl fluoride; trifluoroethylene (VF3); chlorotrifluoroethylene (CTFE); bromotrifluoroethylene; 1,2-difluoroethylene; tetrafluoroethylene (TFE); hexafluoropropylene (HFP); perfluoro (alkyl vinyl) ethers such as perfluoro (methyl vinyl) ether (PMVE), perfluoro (ethyl vinyl) ether (PEVE) and perfluoro (propyl vinyl) ether (PPVE); perfluoro (1,3-dioxole); perfluoro (2,2-dimethyl-1,3-dioxole) (PDD), tetrafluoropropene, chlorotrifluoropropene; 3,3,3-trifluoropropene; pentafluoropropene; 2-chloro-3,3,3-trifluoropropene; the product of formula CF 2 = CFOCF 2 CF (CF 3) OCF 2 CF 2 X in which X is SO 2 F, CO 2 H, CH 2 OH; CH 2 OCN or CH 2 OPO 3 H, the product of formula CF 2 = CFOCF 2 CF 2 SO 2 F; the product of formula F (CF 2 ) n CH 2 OCF = CF 2 in which n is 1,2,3,4 or 5; the product of formula RiCH 2 OCF = CF 2 in which R 1 is hydrogen or F (CF 2 ) Z and z is 1, 2, 3, or 4; the product of formula R 3 OCF = CH 2 in which R 3 is F (CF 2 ) Z and z is 1, 2, 3, or 4; perfluorobutylethylene (PFBE); fluoroethylenepropylene (FEP); Trifluoromethyl-3,3,3-trifluoro-1-propene; 2,3,3,3-tetrafluoropropene or HFO-1234yf; EI, 3,3,3-tetrafluoropropene or HFO-1234zeE; ZI, 3,3,3-tetrafluoropropene or HFO-1234zeZ; 1,1,2,3 tetrafluoropropene or HFO-1234yc; 1,2,3,3-tetrafluoropropene or HFO-1234ye; 1,1,3,3-tetrafluoropropene or HFO-1234zc; chlorotetrafluoropropene or HCFO-1224.
6. Article selon la revendication 5 dans lequel ledit comonomère est l'HFP.  The article of claim 5 wherein said comonomer is HFP.
7. Article selon l'une des revendications 1 à 6 dans lequel le taux massique dudit comonomère fluoré dans le copolymère est d'au moins 10%.  7. Article according to one of claims 1 to 6 wherein the mass ratio of said fluorinated comonomer in the copolymer is at least 10%.
8. Article selon l'une des revendications 1 à 7 dans lequel l'épaisseur de la couche de revêtement par face varie entre 20 et 80 microns, de préférences entre 40 et 60 microns.  8. Article according to one of claims 1 to 7 wherein the thickness of the coating layer per face varies between 20 and 80 microns, preferably between 40 and 60 microns.
9. Article selon l'une des revendications 1 à 8 dans lequel ledit revêtement comprend au moins un additif choisi parmi : les charges ignifuges, les charges conductrices, les modifiants chocs, les stabilisants thermiques inorganiques, les stabilisants UV organiques et inorganiques.  9. Article according to one of claims 1 to 8 wherein said coating comprises at least one additive selected from: fire-retardant fillers, conductive fillers, impact modifiers, inorganic thermal stabilizers, organic and inorganic UV stabilizers.
10. Procédé de fabrication d'un article textile selon l'une des revendications 1 à 9 comprenant une étape d'application, sur au moins une des faces de ladite couche de PVDF homopolymère, dudit revêtement à base de copolymère de VDF par une technique choisie parmi l'enduction, la pulvérisation ou le trempage/imprégnation.  10. A method of manufacturing a textile article according to one of claims 1 to 9 comprising a step of applying, on at least one of the faces of said PVDF homopolymer layer, said coating based on VDF copolymer by a technique. selected from coating, spraying or dipping / impregnation.
11. Procédé selon la revendication 10 dans lequel ledit revêtement est appliqué sur la couche de PVDF homopolymère par voie solvant avec un solvant choisi parmi ceux de la famille des cétones, du type éthyl méthyl cétone (MEK) ou méthylisobutyicétotie (MIBK), ceux de la famille des sulfones du type diméthylsulfoxyde (DMSO) ou ceux de la famille des éthers du type acétate d'éthyl, di-éthyl glycol, di-éthyl acétate.  11. The method of claim 10 wherein said coating is applied to the PVDF homopolymer layer by solvent with a solvent selected from those of the family of ketones, the ethyl methyl ketone (MEK) or methylisobutyicétotie (MIBK), those of the family of sulfones of the dimethylsulfoxide type (DMSO) or those of the family of ethers of ethyl acetate, di-ethyl glycol, di-ethyl acetate type.
12. Procédé selon la revendication 10 dans lequel ledit revêtement est appliqué sur la couche de PVDF homopolymère par voie aqueuse.  The method of claim 10 wherein said coating is applied to the PVDF homopolymer layer aqueous.
13. Utilisation d'un article selon l'une des revendications 1 à 9 ou obtenu selon l'une des revendications 11 et 12 comme textile architectural.  13. Use of an article according to one of claims 1 to 9 or obtained according to one of claims 11 and 12 as an architectural textile.
14. Utilisation selon la revendication 13 dans laquelle ledit article est une toile tendue.  14. Use according to claim 13 wherein said article is a stretched canvas.
15. Utilisation selon la revendication 13 dans laquelle ledit article est une bâche de protection.  15. Use according to claim 13 wherein said article is a tarpaulin.
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JP6470742B2 (en) 2019-02-13
FR3011504B1 (en) 2015-10-23
CN105593433A (en) 2016-05-18
FR3011504A1 (en) 2015-04-10
US20160244910A1 (en) 2016-08-25
WO2015049456A1 (en) 2015-04-09
JP2016533280A (en) 2016-10-27
KR20160065161A (en) 2016-06-08

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