EP3701062A1 - Procédé d'application d'un revêtement antiviral sur un substrat et revêtement correspondant - Google Patents

Procédé d'application d'un revêtement antiviral sur un substrat et revêtement correspondant

Info

Publication number
EP3701062A1
EP3701062A1 EP18786877.3A EP18786877A EP3701062A1 EP 3701062 A1 EP3701062 A1 EP 3701062A1 EP 18786877 A EP18786877 A EP 18786877A EP 3701062 A1 EP3701062 A1 EP 3701062A1
Authority
EP
European Patent Office
Prior art keywords
target
ion beam
coating
silver
substrate
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.)
Pending
Application number
EP18786877.3A
Other languages
German (de)
English (en)
Inventor
Monica Ferraris
Cristina BALAGNA
Sergio PERERO
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.)
Politecnico di Torino
Original Assignee
Politecnico di Torino
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 Politecnico di Torino filed Critical Politecnico di Torino
Publication of EP3701062A1 publication Critical patent/EP3701062A1/fr
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
    • C23C14/0688—Cermets, e.g. mixtures of metal and one or more of carbides, nitrides, oxides or borides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
    • B01D46/0028—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions provided with antibacterial or antifungal means
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/34—Sputtering
    • C23C14/3464—Sputtering using more than one target
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/34—Sputtering
    • C23C14/46—Sputtering by ion beam produced by an external ion source
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
    • A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
    • A41D13/1192—Protective face masks, e.g. for surgical use, or for use in foul atmospheres with antimicrobial agent
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D31/00—Materials specially adapted for outerwear
    • A41D31/04—Materials specially adapted for outerwear characterised by special function or use
    • A41D31/30—Antimicrobial, e.g. antibacterial
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04—Additives and treatments of the filtering material
    • B01D2239/0442—Antimicrobial, antibacterial, antifungal additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04—Additives and treatments of the filtering material
    • B01D2239/0471—Surface coating material

Definitions

  • the present invention relates to a method for the application of an antiviral coating to a substrate and to a coating for covering a substrate, said coating being produced with such method.
  • a subject-matter of the present invention is also an air filter formed by an air permeable substrate and covered with the antiviral coating produced according to said method.
  • a material containing an antibacterial agent e.g. triclosan, silver-based substances, etc.
  • an antibacterial agent e.g. triclosan, silver-based substances, etc.
  • the antibacterial component is applied by means of a carrier such as, for example, alcohol, glycols or water, which impregnate the substrate.
  • the antibacterial component is applied by means of a painting (or "coating") procedure, and the use of an inorganic carrier, as the porous silica gel, is provided for.
  • the object of the present invention is therefore to provide a method which could allow obtaining a coating having, at the same time, both antiviral properties and a high resistance to thermal and mechanical wear.
  • Such object is achieved by the present invention by means of a co-deposition or co- sputtering process of a first glass, ceramic, or glass-ceramic material, or matrix, and a plurality of nanoclusters of a second metallic material, in which the incident powers of a first ion beam on the first material and of a second ion beam on a second material are mutually different and specifically determined in order to confer antiviral properties to the obtained coating.
  • the antiviral effect is achieved by means of an appropriate setting of useful work cycles (or "duty cycles"), i.e. of the regular sequences of switching on and off the ion beam incident on the second material.
  • the method of the present invention may further provide for the co- sputtering of more than two materials and, in particular, can provide for the co- deposition of more than one metallic material (for example, of a third metallic material and/ or a fourth metallic material).
  • a bombardment occurs also on a third target made of a third metallic material, and/ or on a fourth target made of a fourth metallic material, etc.
  • the method of the present invention comprises a co-sputtering on said substrate of at least a first glass, ceramic, or glass-ceramic material, or matrix, and of at least a plurality of nanoclusters of a second metallic material, said co-sputtering taking place by means of cathodic pulverization of at least a first target made of the first material and of at least a second target made of a second material.
  • the parameters used to obtain the antiviral effect are then set in such a way that the co-sputtering, in turn, comprises:
  • the duration of the bombardment with the first ion beam and the second ion beam ranges between 15 and 80 minutes.
  • the first material is specified preferably as silica, while the second and/ or third and/ or fourth material, etc., is preferably a metal chosen from copper, zinc and silver.
  • the present invention relates to an antiviral coating for covering a substrate, comprising at least a plurality of nanoclusters of a second metallic material and at least one glass, ceramic, or glass-ceramic material; said coating having a thickness ranging between 15 nm and 500 nm.
  • the antiviral coating of the present invention may further comprise a third and/ or fourth metallic material, etc.
  • Said at least one metallic material is preferably chosen from copper, zinc and silver.
  • the first material is preferably silica.
  • An air filter comprising a substrate which is permeable to air, said substrate being covered with the antiviral coating having the features described above, further forms a subject-matter of the present invention.
  • the method of the present invention comprises:
  • Said co-sputtering comprises:
  • the plasma generating the first ion beam is obtained by means of a radio frequency alternating current, while the plasma generating the second ion beam is obtained by means of a radio frequency continuous current or alternating current.
  • the method of the present invention comprises:
  • Said co-sputtering comprises:
  • the plasma generating the first ion beam is obtained by means of a radio frequency alternating current, while the plasma generating the second ion beam is obtained by means of a radio frequency continuous current or alternating current.
  • an antiviral coating having a thickness ranging between 15 nm and 500 nm, said coating comprising: a silica matrix and a plurality of silver nanoclusters. Further, such coating may be used for covering an air permeable substrate, resulting in an antiviral material which can be used to make an air filter.
  • control solution • the viral load in the same solution mentioned in the preceding points and hereinafter called the control solution
  • STEP 2 tissue samples coated according to the method of the present invention were prepared using a silica target and a silver target and varying, depending on the sample, the parameters related to the time of co-sputtering, the powers of the ion beams incident on the silica target and on the silver target, as well as the duty cycle of the switching on and off of the ion beam incident on the silver target. Then, the behaviour of single samples was compared with that of the reference sample.
  • a coating made of a silica matrix and silver nanoclusters obtained by means of co-sputtering with a duration equal to 60 minutes was applied and carried out by means of a simultaneous bombardment on a silica target with an ion beam having a power equal to 200 Watts and on a silver target with an ion beam having a power of 1 Watt.
  • the ion beam incident on the silver target has been switched on and off according to a periodic sequence with a duty cycle equal to 25% .
  • the coated sample showed a significant reduction of the plaque-forming units (62 PFU/ml) compared with those detected on the sample of uncoated fabric (2,482 PFU/ml) and the control solution (7,488 PFU/ml).
  • the power of the ion beam incident on the silica target is equal to 100 W
  • the power of the ion beam incident on the silver target is equal to 1 W
  • the ion beam incident on the silver target is switched on and off according to a periodical sequence with a duty cycle ranging between 97% and 98% ;
  • the power of the ion beam incident on the silica target is equal to 200 W
  • the power of the ion beam incident on the silver target is equal to 1 W
  • the ion beam incident on the silver target is switched on and off according to a periodical sequence with a duty cycle ranging between 25 % and 35 % .

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Physical Vapour Deposition (AREA)

Abstract

L'invention concerne un procédé d'application d'un revêtement antiviral sur un substrat et un revêtement antiviral correspondant, le procédé comprenant : la co-pulvérisation cathodique, sur ledit substrat, d'au moins un premier matériau de verre, de céramique ou de vitrocéramique, appelé matrice, et d'au moins une pluralité de nanoagrégats d'un second matériau métallique, ladite co-pulvérisation cathodique comprenant : le bombardement simultané d'une première et d'une seconde cible, avec un premier faisceau ionique incident sur ladite première cible ayant une puissance comprise entre 90 et 110 Watts et un second faisceau ionique incident sur ladite seconde cible ayant une puissance comprise entre 0,5 et 1,5 watts, ledit second faisceau ionique étant activé et désactivé selon une séquence périodique avec un cycle utile compris entre 97 % et 98 % ; ou le bombardement simultané de la première et de la seconde cible, avec un premier faisceau ionique incident sur ladite première cible ayant une puissance comprise entre 190 et 210 watts, et un second faisceau ionique incident sur ladite seconde cible ayant une puissance comprise entre 0,5 et 1,5 watts, ledit second faisceau ionique étant activé et désactivé selon une séquence périodique avec un cycle utile compris entre 25 % et 35 %.
EP18786877.3A 2017-10-25 2018-10-02 Procédé d'application d'un revêtement antiviral sur un substrat et revêtement correspondant Pending EP3701062A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102017000121151A IT201700121151A1 (it) 2017-10-25 2017-10-25 Procedimento per l’applicazione di un rivestimento antivirale ad un substrato e relativo rivestimento
PCT/IB2018/057639 WO2019082001A1 (fr) 2017-10-25 2018-10-02 Procédé d'application d'un revêtement antiviral sur un substrat et revêtement correspondant

Publications (1)

Publication Number Publication Date
EP3701062A1 true EP3701062A1 (fr) 2020-09-02

Family

ID=61581424

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18786877.3A Pending EP3701062A1 (fr) 2017-10-25 2018-10-02 Procédé d'application d'un revêtement antiviral sur un substrat et revêtement correspondant

Country Status (3)

Country Link
EP (1) EP3701062A1 (fr)
IT (1) IT201700121151A1 (fr)
WO (1) WO2019082001A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021232216A1 (fr) 2020-05-19 2021-11-25 Carl Zeiss Vision International Gmbh Article transparent, en particulier verre de lunettes, à propriétés antibactériennes et/ou antivirales et son procédé de fabrication
WO2022016482A1 (fr) 2020-07-24 2022-01-27 Carl Zeiss Vision International Gmbh Verre de lunettes à propriétés antibactériennes et/ou antivirales et son procédé de fabrication
DE102020121204B3 (de) 2020-08-12 2021-10-21 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein Selbstdesinfizierendes antivirales Filtermaterial, dessen Herstellung und Anwendung, sowie Luftfiltereinrichtung mit dem Filtermaterial
CN221303608U (zh) 2020-11-13 2024-07-09 卡尔蔡司光学国际有限公司 具有抗菌和/或抗病毒特性的眼镜片
WO2022193292A1 (fr) 2021-03-19 2022-09-22 Carl Zeiss Vision International Gmbh Verre de lunettes à propriétés antibactériennes et/ou antivirales et son procédé de fabrication
WO2023095102A1 (fr) * 2021-11-29 2023-06-01 Fondazione Istituto Italiano Di Tecnologia Matériau composite transparent ayant des propriétés antimicrobiennes
EP4472757B1 (fr) * 2022-02-07 2026-04-01 CTCV - Centro Tecnológico da Cerámica e do Vidro Membranes filtrantes poreuses comprenant un revêtement à base métallique présentant des propriétés antivirales

Also Published As

Publication number Publication date
WO2019082001A1 (fr) 2019-05-02
IT201700121151A1 (it) 2019-04-25

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