US20240218588A1 - Method for coating textile materials - Google Patents

Method for coating textile materials Download PDF

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US20240218588A1
US20240218588A1 US18/556,554 US202218556554A US2024218588A1 US 20240218588 A1 US20240218588 A1 US 20240218588A1 US 202218556554 A US202218556554 A US 202218556554A US 2024218588 A1 US2024218588 A1 US 2024218588A1
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sol
fabric
gel
formulation
textile material
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Wanxian Wang
Thu-Hoa Tran-Thi
Guillaume LE CHEVALLIER
Justine AGAUD
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Centre National de la Recherche Scientifique CNRS
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
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Centre National de la Recherche Scientifique CNRS
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
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    • 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
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/51—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof
    • D06M11/55—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof with sulfur trioxide; with sulfuric acid or thiosulfuric acid or their salts
    • 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
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/07—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof
    • D06M11/11—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof with halogen acids or salts thereof
    • 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
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/58—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with nitrogen or compounds thereof, e.g. with nitrides
    • D06M11/64—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with nitrogen or compounds thereof, e.g. with nitrides with nitrogen oxides; with oxyacids of nitrogen or their salts
    • 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
    • D06M13/50—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with organometallic compounds; with organic compounds containing boron, silicon, selenium or tellurium atoms
    • D06M13/503—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with organometallic compounds; with organic compounds containing boron, silicon, selenium or tellurium atoms without bond between a carbon atom and a metal or a boron, silicon, selenium or tellurium atom
    • D06M13/507—Organic silicon compounds without carbon-silicon bond
    • 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
    • D06M13/50—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with organometallic compounds; with organic compounds containing boron, silicon, selenium or tellurium atoms
    • D06M13/51—Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond
    • D06M13/513—Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond with at least one carbon-silicon bond
    • 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
    • D06M13/52—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment combined with mechanical treatment
    • D06M13/525—Embossing; Calendering; Pressing
    • 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
    • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/01—Stain or soil resistance
    • 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
    • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/10—Repellency against liquids
    • 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
    • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/10—Repellency against liquids
    • D06M2200/11—Oleophobic properties
    • 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
    • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/10—Repellency against liquids
    • D06M2200/12—Hydrophobic properties
    • 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
    • D06M2400/00—Specific information on the treatment or the process itself not provided in D06M23/00-D06M23/18
    • D06M2400/02—Treating compositions in the form of solgel or aerogel

Definitions

  • Garments that protect against splashes of liquids containing corrosive and/or toxic chemicals must, depending on the application, have oleophobic and/or hydrophobic properties. The combination of these two properties on a material leads to a material that can be termed omniphobic.
  • vacuum silanization is a process which is difficult to industrialize in the textile industry, notably when the fabric must first be cleaned of any impurities trapped in the fiber network during production.
  • the second case there is a risk of losing material (fluorinated or functionalized nanometric particles) during successive washes, with the attendant risk of environmental pollution.
  • a large number of constituents with structuring, plasticizing and bridging properties must be used in methanol for the first coating, and MeOH is preferentially used as a solvent for the second coating, which in certain cases requires lengthy treatment at high temperature.
  • the stated wet take-up values for the coatings are high, between 115% and 160%.
  • the majority of the studies do not report on the permeability of the treated fabric, and a sharp reduction thereof with a multilayer coating would result in poor breathability and consequently discomfort for the user.
  • the textile material used may be of any type.
  • it may be a woven, nonwoven or knitted fabric, preferably a woven fabric.
  • the term “textile material” refers to a material whose constituent unit elements are fibers.
  • the textile material comprises fibers including reactive functions such as hydroxyl functions.
  • An example of such a fiber is the cellulose present in natural fibers such as cotton or artificial fibers such as viscose. Preferably, they are viscose fibers.
  • said at least one cycle of impregnating a) the textile material with a sol-gel bonding formulation comprises a step of pressure squeezing the impregnated textile material.
  • a step of pressure squeezing the impregnated textile material is performed after each impregnation cycle.
  • said at least one cycle of impregnation c) of the dried textile material obtained in step b) with an omniphobic or hydrophobic sol-gel formulation comprises a step of pressure squeezing the impregnated textile material.
  • a step of pressure squeezing the impregnated textile material is performed after each impregnation cycle.
  • pressure squeezing is performed under the following conditions.
  • the impregnated fabric passes between two pressure rollers maintained at a pressure which may range between 2 and 7 bar, and at a throughput speed ranging from 1 to 9 m/min.
  • Squeezing is preferably performed at 5 bar and a throughput speed of 2 m/min.
  • neutralizing aqueous solution means an aqueous solution which allows acid residues present in the impregnated textile material obtained via the process according to the invention to be neutralized on conclusion of step d).
  • Suitable neutralizing aqueous solutions are well known to those skilled in the art. This is generally a basic aqueous solution, such as a sodium hydroxide or potassium hydroxide solution, preferably a sodium hydroxide solution.
  • the padding step of the process according to the invention is performed at a speed of 1 to 50 meters/minute, preferably about 2 meters/minute.
  • said sol-gel bonding formulation is additionally free of plasticizing agent and/or chelating agent and/or viscosity agent.
  • the sol-gel bonding formulation used in the process according to the invention may be free of chelating agent.
  • the process may include only one or two successive cycles a) and b), of impregnating the textile material with a sol-gel bonding formulation, said sol-gel bonding formulation prepared at room temperature between 18 and 28° C., said sol-gel bonding formulation being free of polycarboxylic acid, and b) of drying the impregnated textile material.
  • the process may include only one or two successive cycles a) and b), of impregnating the textile material with a sol-gel bonding formulation, said sol-gel bonding formulation containing sulfamic acid and being free of polycarboxylic acid, and b) of drying the impregnated textile material.
  • the process may advantageously include only one or two successive cycles, a) and b), of impregnating the textile material with a sol-gel bonding formulation, said sol-gel bonding formulation being free of polycarboxylic acid, and b) of drying the impregnated textile material after each cycle.
  • a second subject of the invention is a sol-gel bonding formulation comprising at least two silylated precursors, a first precursor preferably being chosen from tetramethoxysilane (TMOS), tetraethoxysilane (TEOS), a second precursor preferably chosen from (3-glycidyloxypropyl)trimethoxysilane (GPTMOS), (3-glycidyloxypropyl)triethoxysilane (GPTEOS) and aminopropyltriethoxysilane,
  • the sol-gel bonding formulation comprises sulfamic acid and hydrochloric acid and at least two silylated precursors, a first precursor preferably chosen from tetramethoxysilane (TMOS) and tetraethoxysilane (TEOS), a second precursor preferably chosen from (3-glycidyloxypropyl)trimethoxysilane (GPTMOS) and (3-glycidyloxypropyl)triethoxysilane (GPTEOS), optionally, the combination of TMOS/GPTMOS precursors being excluded, said sol-gel formulation being free of polycarboxylic acid.
  • TMOS tetramethoxysilane
  • TEOS tetraethoxysilane
  • GPTMOS 3-glycidyloxypropyl
  • GPTEOS 3-glycidyloxypropyl
  • the sol-gel bonding formulation according to the invention is preferably free of zirconium alkoxide and/or sodium hypophosphite.
  • the omniphobic sol-gel formulation comprises sulfamic acid and at least one silylated precursor preferably chosen from 1H, 1H,2H,2H-perfluorodecyltriethoxysilane (17FTEOS), 1H,H,H,H-perfluorooctyltriethoxysilane (13FTEOS), 1H,1H,2H,2H-perfluorooctyltrimethoxysilane (13FTMOS) and 1H,1H,2H,2H-perfluorodecyltrimethoxysilane (17FTMOS), or a mixture of one or more of these precursors with tetraethoxysilane (TEOS).
  • TEOS 1H, 1H,2H,2H-perfluorodecyltriethoxysilane
  • 13FTEOS 1H,H,H,H-perfluorooctyltriethoxysilane
  • This omniphobic sol-gel formulation may comprise an alcohol, in particular ethanol or isopropanol, then giving a stability time ranging from 22 to 48 hours.
  • hydrophobic sol-gel formulations comprising hexadecyltriethoxysilane (HDTEOS) and sulfamic acid or comprising hexadecyltriethoxysilane (HDTEOS), tetraethoxysilane (TEOS) and sulfamic acid.
  • HDTEOS hexadecyltriethoxysilane
  • TEOS tetraethoxysilane
  • sulfamic acid may comprise an alcohol, in particular ethanol.
  • solvent, water, alcohol and silyl precursors that may be used in the sol-gel formulations are those described above relative to the process for coating a textile material according to the invention.
  • the omniphobic formulations can also be deposited by spraying onto solid supports, glass, steel, brick or wall cladding, as anti-graffiti coatings, since the acrylic spray paints used for graffiti do not adhere to these omniphobic coatings.
  • FIG. 4 shows drop shapes of water and alkanes (50 ⁇ L) deposited on a freshly coated fabric according to the P(3) F process. From left to right: water, hexadecane (index 3), dodecane (index 5), decane (index 6), octane (index 7).
  • FIG. 7 shows an SEM image of the K5204 fabric (Kermel®/Lenzing FR® 50/50) shown in FIG. 6 , coated according to the P(3) F process, at 500 ⁇ magnification.
  • FIG. 8 shows an SEM image of the K5204 fabric (Kermel®/Lenzing FR® 50/50) shown in FIG. 6 , coated via the P(3) F process, at 1000 ⁇ magnification.
  • FIG. 9 shows an example of light transmission analysis of sol(6) omniP with the Turbiscan lab apparatus at different temperatures (30° C., 35° C., 40° C.).
  • the % transmission of the intensity of a light beam passing through the sample is 92 ⁇ 1% here.
  • the loss in transmission over long time indicates either the presence of scattering particles or the demixing of the sol with a change in the refractive index of the liquid.
  • FIG. 10 shows the results of the tests of resistance of the omniphobic coating to strong acids and bases.
  • Tests were performed with A4 (21 ⁇ 30 cm 2 ) fabric samples or with 100 m of fabric with a 30 cm width.
  • the coatings were performed with various sol-gel formulations, either by padding with a laboratory padding machine, or by spraying with a motorized spraying system.
  • the wet take-up which represents the amount of sol taken up by the fabric before drying, is of the order of 43 ⁇ 3%.
  • the take-up rate is calculated by weighing the textile before and after treatment.
  • the principle is to impregnate the fabric with a bath containing the desired product formulation, and to squeeze it out, i.e. to make the product penetrate and remove the excess bath from the fabric by exerting pressure between two elastomer-covered rollers. This allows the amount of bath deposited to be controlled, known as the “squeezing” or “take-up” rate.
  • the material is treated throughout and on both sides, and maintains its textile appearance.
  • the textile is weighed again after the squeezing step, but before the drying step. The ratio [(weight after deposition) ⁇ (weight before deposition)]/(weight before deposition) gives the take-up rate.
  • TMOS 6.0 mL of TMOS, 6.0 mL of GPTMOS and 77.0 mL of ultrapure water are successively added to a hermetically sealed glass flask.
  • the mixture is stirred at room temperature (20-24° C.) at 500 rpm for 4H using an IKA Werke RO10 Power multiple stirrer plate.
  • Sol(4) ACC contains 13.5% v/v of silylated precursors with a TMOS/GPTMOS mole ratio of 1.5.
  • Sol(4) ACC has a stability of 6H.
  • TEOS 9.5 mL of TEOS, 8.1 mL of GPTEOS and 82.4 mL of aqueous sulfamic acid solution at 3.2 mmol/L are added successively to a hermetically sealed glass flask. The mixture is stirred at room temperature (20-24° C.) at 500 rpm for 24H using an IKA multiple stirrer plate.
  • Sol(5) ACC contains 17.6% v/v of silylated precursors with a TEOS/GPTEOS mole ratio of 1.5. Sol(5) ACC has a stability time of more than 1 month.
  • TEOS 9.5 mL of TEOS, 8.1 mL of GPTEOS, 10 mL of ethanol and 72.4 mL of aqueous sulfamic acid solution at 3.6 mmol/L are successively added to a hermetically sealed glass flask.
  • the mixture is stirred at room temperature (20-24° C.) at 500 rpm for 3H using an IKA multiple stirrer plate.
  • Sol(6) ACC contains 17.6% v/v of silylated precursors with a TEOS/GPTEOS mole ratio of 1.5 and 10% v/v of ethanol.
  • Sol(6) ACC has a stability time of more than 2 months.
  • TEOS 9.5 mL of TEOS, 8.1 of mL of GPTEOS, 20 mL of ethanol and 62.4 mL of aqueous sulfamic acid solution at 4.2 mmol/L are successively added to a hermetically sealed glass flask.
  • the mixture is stirred at room temperature (20-24° C.) at 500 rpm for 3H using an IKA multiple stirrer plate.
  • Sol(7) ACC contains 17.6% v/v of silylated precursors with a TEOS/GPTEOS mole ratio of 1.5 and 20% v/v of ethanol.
  • Sol(7) ACC has a stability time of more than 1 month.
  • Sol(1) ACC is applied to the fabric by padding at a speed of 2 m/min. After squeezing, the fabric is dried for 2 min at 120° C. in an oven. Immediately afterwards, a second deposit of Sol(1) ACC is applied by padding at the same speed, and the fabric is again dried for 2 min at 120° C. in an oven. The fabric is then kept for 18 hours in a desiccator at 50% relative humidity, at room temperature (20-24° C.) and atmospheric pressure. Sol(1) omniP is then applied to the fabric by padding at a speed of 2 m/min. After squeezing, the fabric is dried for 2 min at 120° C.
  • Sol(1) ACC is applied to the fabric by padding at a speed of 2 m/min. After squeezing, the fabric is dried for 2 min at 120° C. in an oven. Immediately afterwards, a second deposit of Sol(1) ACC is applied by padding at the same speed, and the fabric is again dried for 2 min at 120° C. in an oven. The fabric is then kept for 18 hours in a desiccator at 50% relative humidity, at room temperature (20-24° C.) and atmospheric pressure. Sol(9) omniP is then applied to the fabric by padding at a speed of 2 m/min. After squeezing, the fabric is dried for 10 min at 120° C.
  • Sol(6) ACC is applied to the fabric by padding at a speed of 2 m/min. After squeezing, the fabric is left to dry and to mature for 1 week to 3 months in the open air, at room temperature (20-24° C.) and laboratory atmospheric pressure. Sol(13) omniP is then applied to the fabric by padding at a speed of 2 m/min. After squeezing, the fabric is left to dry and to mature in the open air, at room temperature (20-24° C.) and laboratory atmospheric pressure for two weeks, before being stored for the washing, hydrophobicity and oleophobicity tests.
  • Sol(3) ACC is applied by spraying (pressure 4 bar) at a distance of 10 cm from the fabric, said fabric being moved at a speed of 6 m/min.
  • the assembly is placed in a chamber under pumping to evacuate the ethanol vapors. After deposition, the fabric is dried for 2 min at 120° C. in an oven, then left to cool for 30 min to 1 h in the open air, at room temperature (20-24° C.) and atmospheric pressure.
  • Sol(8) omniP is then applied by spraying (pressure 4 bar) at a distance of 10 cm from the fabric, in two passes, the latter being moved at a speed of 9 m/min. After deposition, the fabric is compressed using a 3 kg roller and dried for 10 min at 120° C.
  • Example 6 Tests of the Hydrophobic and Oleophobic Properties, Permeability and Resistance of Fabrics Prepared According to the Invention to Washing and to Strong Acids and Bases
  • Tests of the resistance of the omniphobic coating to strong acids and bases are performed by immersing the fabric in solutions of strong acid (HCl) or of strong base (NaOH).
  • the results obtained, presented in FIG. 10 show very little variation in these contact angles, and also show preserved hydrophobicity and oleophobicity even after placing the textile in contact with solutions of strong acids and bases, demonstrating the high resistance of the textile thus coated to strong acids and bases.
  • Such a coating on protective gowns will allow workers to be protected from splashes of strong acids or bases.
  • oleophobicity index 50 ⁇ L drops of alkanes are applied using a micropipette to at least four different locations distributed over the surface of the fabric. The drops are observed for 30 s and their shape is rated according to the references of the standard ISO 14419. The grades attributed range from A to D for drop shape.
  • a drop of n-index alkane is placed on the surface of a coated fabric. If the drop is well rounded (grade A), the test is successful and the coating is attributed the n-index. If the drop is rated B, the alkane is changed to a lower index n ⁇ 1 for which the drop is rated A.
  • the contact angle is measured using an OCA 15EC goniometer (SCA 20).
  • SCA 20 OCA 15EC goniometer
  • 10 ⁇ L drops of an alkane are applied to the fabric using a needle (Hamilton 500 mL, HAMI91022) for each measurement.
  • a coating is said to be oleophobic when the contact angle of a drop of alkane is greater than 90 degrees.
  • FIG. 4 An example of visual analysis of hydrophobicity and oleophobicity with various alkanes is shown in FIG. 4 .
  • FIG. 5 shows an example of contact angle measurements with a coated fabric when new, and after having been washed 30 times.
  • FIG. 6 Examples of Scanning Electron Microscope (SEM) analysis of untreated fabrics and of fabrics coated with sol-gel coating are shown in FIG. 6 , FIG. 7 and FIG. 8 . These images make it possible to observe the homogeneous sheathing of fibers with a coating according to the invention.
  • SEM Scanning Electron Microscope

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Paints Or Removers (AREA)
US18/556,554 2021-04-22 2022-04-21 Method for coating textile materials Pending US20240218588A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR2104217A FR3122190A1 (fr) 2021-04-22 2021-04-22 Procédé de revêtement de matériaux textiles
FRFR2104217 2021-04-22
PCT/FR2022/050764 WO2022223934A1 (fr) 2021-04-22 2022-04-21 Procédé de revêtement de matériaux textiles

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EP (1) EP4326938A1 (fr)
FR (1) FR3122190A1 (fr)
WO (1) WO2022223934A1 (fr)

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Publication number Priority date Publication date Assignee Title
FR2984343B1 (fr) 2011-12-20 2013-12-20 Inst Francais Textile & Habillement Procede d'obtention par voie sol-gel d'un revetement fonctionnel durable pour supports, notamment textiles, et revetement ainsi obtenu
EP3218541A4 (fr) * 2014-11-12 2018-07-11 The University Of Houston System Revêtements résistants à la salissure, résistants aux taches et procédés d'application sur des matériaux textiles ou d'autres matériaux flexibles
WO2016077550A1 (fr) * 2014-11-12 2016-05-19 University Of Houston System Revêtements résistant à la salissure, résistant aux taches sans fluor et procédés d'application sur des matériaux
FR3057581B1 (fr) 2016-10-14 2021-12-10 Commissariat Energie Atomique Procede de revetement de materiaux textiles
CN106978067B (zh) * 2017-03-29 2019-07-05 福耀玻璃工业集团股份有限公司 一种防雾涂液、防雾玻璃窗及其制造方法
CN108546429A (zh) * 2018-04-03 2018-09-18 广州保赐利化工有限公司 一种用于汽车玻璃的油水双疏涂层液
CN109518468A (zh) * 2018-11-13 2019-03-26 疏博（上海）纳米科技有限公司 一种有机硅聚合物超疏水织物整理剂的制备及应用
CN111335042A (zh) * 2020-04-14 2020-06-26 青岛大学 一种超疏水海藻纤维织物及其制备方法和应用

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