CN111303787A - Flame-retardant antibacterial aviation decorative film - Google Patents

Flame-retardant antibacterial aviation decorative film Download PDF

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CN111303787A
CN111303787A CN202010116331.7A CN202010116331A CN111303787A CN 111303787 A CN111303787 A CN 111303787A CN 202010116331 A CN202010116331 A CN 202010116331A CN 111303787 A CN111303787 A CN 111303787A
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layer
pvdf
antibacterial
flame
retardant
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CN111303787B (en
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陈剑平
顾方明
李欣棚
沈琦炜
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Hangzhou Foremost Material Technology Co ltd
Second Research Institute of CAAC
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Hangzhou Foremost Material Technology Co ltd
Second Research Institute of CAAC
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    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/29—Laminated material
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
    • C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
    • C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C09D127/16—Homopolymers or copolymers of vinylidene fluoride
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    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2327/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08J2327/06—Homopolymers or copolymers of vinyl chloride
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/08—Metals
    • C08K2003/0806—Silver
    • C—CHEMISTRY; METALLURGY
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    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
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    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2427/00—Presence of halogenated polymer
    • C09J2427/006—Presence of halogenated polymer in the substrate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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Abstract

The invention provides a flame-retardant antibacterial aviation decorative film, and belongs to the technical field of decorative films. The flame-retardant antibacterial aviation decorative film sequentially comprises an antibacterial coating, a first PVDF layer, a first adhesive layer, an ink layer, a PVC layer, a second adhesive layer, a second PVDF layer and a third adhesive layer from outside to inside, and the layers are sequentially compounded in a coating, calendaring, co-extruding and laminating mode to form the flame-retardant antibacterial aviation decorative film. According to the invention, the outer layer and the inner layer of the decorative film are both provided with the PVDF film layers, and the PVDF layer of the inner layer is bonded with the base material through the third adhesive layer, so that the PVC layer is isolated, and the flame retardant property is excellent; the outermost layer is an antibacterial coating which can effectively inhibit or kill microorganisms on the surface, and the sterilization rate of the antibacterial coating to escherichia coli, candida albicans and staphylococcus aureus is more than or equal to 90%.

Description

Flame-retardant antibacterial aviation decorative film
Technical Field
The invention belongs to the technical field of decorative films, and particularly relates to a flame-retardant antibacterial aviation decorative film.
Background
The decorative film is a novel decorative material prepared by compounding high molecular polymers serving as raw materials with various additives through processing and forming methods such as coating, calendaring, co-extrusion, laminating and the like, can be compounded with base materials such as wood, plastic plates, honeycomb plates, composite plates, aluminum plates, iron plates and the like to prepare a multipurpose decorative material, and is widely applied to surface decoration of household appliances, sound equipment, interior decoration, and interior decoration of airplanes, ships and trains.
As a decorative film used in the field of public transportation, the decorative film has to have very high flame retardant performance, and brings more escape time for passengers in case of fire, which is very important for safe operation of passenger cabins. Along with the continuous improvement of living standard of people, the requirement of passengers on the cabin environment is higher and higher, and the mildew-proof antibacterial decorative film can inhibit or kill microorganisms on the surface, so that the passengers and crews in the cabin are protected from being invaded by the microorganisms when contacting interior decorations with the cabin decorative film, and the health and sanitation performance of the cabin environment are improved.
Disclosure of Invention
The invention aims to provide a flame-retardant antibacterial aviation decorative film which is excellent in flame retardant property and has mildew-proof and antibacterial functions.
The purpose of the invention is realized by the following technical scheme:
the flame-retardant antibacterial aviation decorative film sequentially comprises an antibacterial coating, a first PVDF layer, a first adhesive layer, an ink layer, a PVC layer, a second adhesive layer, a second PVDF layer and a third adhesive layer from outside to inside, wherein the layers are sequentially compounded in a coating, calendering, co-extruding and laminating mode to form the flame-retardant antibacterial aviation decorative film.
Further, the decorative film is vertically burnt for 60 secondsThe burning time is less than or equal to 15s, the burning length is less than or equal to 152mm, and the continuous burning time of the dropping is less than or equal to 3 s; 5min maximum heat release rate is less than or equal to 65kw/m 22 min total heat release amount less than or equal to 65 kw.min/m2(ii) a The average smoke density is less than or equal to 200 in 4 minutes; the surface of the decorative film can inhibit or kill microorganisms, and the sterilization rate of the decorative film to escherichia coli, candida albicans and staphylococcus aureus is more than or equal to 90%.
The flame retardant performance adopts 60-second vertical combustion test of materials in appendix F part I (a) (1) (i) of China civil aviation regulation part 25 airworthiness standard CCAR25.853(a) of transport aircraft; CCAR25.853 (d) appendix F part IV test of the heat release rate of the material; CCAR25.853 (d) Appendix F Part V tests for smoking characteristics of the materials and the United states Federal aviation administration regulations FAR 25.853(a), Amdt25-116, Appendix F, Part I (a) (1) (I) Vertical Burn,60Sec, FAR 25.853(d), Amdt25-116, Appendix F, Part IVOSU HeatRelease, FAR 25.853(d), Amdt25-116, Appendix F, Part V, NBS Optical SmokeDensitiyd performance test requirements.
Further, the antibacterial coating is prepared by fixing metal silver or ions thereof on the surface of the porous material to prepare an antibacterial agent, dissolving the antibacterial agent and PVDF powder by using one or more solvents of water, ethanol, acetone, triethyl phosphate and N-methyl pyrrolidone (NMP) to prepare a coating solution, uniformly coating the coating solution on the outer surface of the first PVDF layer, and drying at 60-120 ℃ to form the antibacterial coating with the thickness of 5-30 microns. Wherein the addition amount of the antibacterial agent is 5-20 wt%.
The porous material fixes the metal silver or the ions thereof on the surface in a physical adsorption mode, which is beneficial to the uniform dispersion of the silver ions, the silver ions are slowly released to the surface in the porous material, and the sterilization effect is more durable than that of the metal silver or the ions thereof directly added into the PVDF powder.
Wherein, the porous material is one or more of zeolite, silica gel, phosphate and glass.
Further, the first PVDF layer is a transparent PVDF extruded film, and the thickness of the first PVDF layer is 3-50 μm.
Further, the first glue layer is a PMMA glue layer and is coextruded with the first PVDF layer, and the thickness of the first glue layer is 2-15 mu m.
Further, the second glue layer is a PMMA glue layer and is coextruded with the second PVDF layer, and the thickness of the second glue layer is 2-15 μm.
Further, the ink layer is water-based ink and is printed on the PVC layer, and the thickness of the ink layer is 0.5-10 μm.
Further, the PVC layer is formed by adding a silicon nitrogen flame retardant and an inorganic filler into a PVC base material and then performing calendaring, wherein the content of the silicon nitrogen flame retardant is 5-30 wt%, the content of the inorganic filler is 10-20 wt%, the silicon nitrogen flame retardant is at least one of a silicon dioxide nitrogen-containing compound, a silicon nitrogen polymer polyether polyol or a composite flame retardant consisting of the silicon-containing flame retardant and a nitrogen flame retardant, and the inorganic filler is at least one of nano calcium carbonate, a whisker reinforcing agent or titanium dioxide; the thickness of the PVC layer is 40-200 μm.
Further, the second PVDF layer is a white PVDF extruded film, and the thickness of the second PVDF layer is 20-75 μm. The flame retardancy of the decorative film can be increased, and some colors of the substrate can be masked so as to prevent visual color errors caused by the color of the substrate.
Further, the third adhesive layer is a pressure-sensitive adhesive or a heat-sensitive adhesive, and specifically is one or more of epoxy, acrylic, polyurethane, maleimide and cyanate adhesives; adding a silicon nitrogen flame retardant into the third adhesive layer, wherein the content of the flame retardant is 5-40 wt%; the silicon nitrogen flame retardant is at least one of a silicon dioxide nitrogen-containing compound, silicon nitrogen polymer polyether polyol or a composite flame retardant consisting of the silicon-containing flame retardant and a nitrogen flame retardant, and the thickness of the third adhesive layer is 5-50 mu m.
Further, when the third adhesive layer is a pressure-sensitive adhesive, the decorative film further comprises a release protective layer attached to the inner surface of the third adhesive layer, wherein the release protective layer is a thin film made of one or more of PP, PE and PET, and the thickness of the release protective layer is 10-50 μm. Compared with the prior art, the invention has the following beneficial effects:
in the flame-retardant decorative film structure, the outermost layer is the antibacterial coating, so that microorganisms on the surface can be effectively inhibited or killed, and the sterilization rate of escherichia coli, candida albicans and staphylococcus aureus is more than or equal to 90%.
The first PVDF layer has the performances of weather resistance, scribbling resistance and the like, and can improve the flame retardant property and the scratch resistance of the flame-retardant decorative film; the PVC layer provides the hardness for fire-retardant decorating film and supports, improves the fire behaviour of whole decorating film, and the fire resistance of decorating film can be improved on second PVDF layer, can cover by the original colour of cover for the pattern of fire-retardant decorating film itself is more clear, and when the conflagration takes place, the both sides of PVC substrate layer are provided with PVDF membrane layer, is favorable to delaying the burning of decorating film, and then reduces the smoke toxicity that the conflagration produced, is favorable to fleing.
Drawings
FIG. 1 is a schematic structural view of a flame retardant antimicrobial aerospace decorative film of the present invention;
reference numerals: 1-antibacterial coating, 2-first PVDF layer, 3-first adhesive layer, 4-ink layer, 5-PVC layer, 6-second adhesive layer, 7-second PVDF layer, 8-third adhesive layer and 9-release protective layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The flame-retardant antibacterial aviation decorative film of the invention is described in detail below with reference to specific structures and principles. In the specification, the English and Chinese abbreviations are common abbreviations in the chemical field, for example, PVDF refers to polyvinylidene fluoride, PVC refers to polyvinyl chloride, PP refers to polypropylene, PE refers to polyethylene, and PET refers to polyethylene terephthalate.
The invention relates to a fire alarm early warning aviation decorative film, which is shown in figure 1. The antibacterial coating comprises an antibacterial coating 1, a first PVDF layer 2, a first adhesive layer 3, an ink layer 4, a PVC layer 5, a second adhesive layer 6, a second PVDF layer 7 and a third adhesive layer 8 from outside to inside in sequence. Preferably, a release protective layer is further arranged on the inner side of the third adhesive layer.
The outermost layer of the flame-retardant antibacterial aviation decorative film is an antibacterial coating, so that microorganisms on the surface can be effectively inhibited or killed, and the sterilization rate of escherichia coli, candida albicans and staphylococcus aureus is more than or equal to 90%. The first PVDF layer has the performances of weather resistance, scribbling resistance and the like, and can improve the flame retardant property and the scratch resistance of the flame-retardant decorative film; the PVC layer provides the hardness for fire-retardant decorating film and supports, improves the fire behaviour of whole decorating film, and the fire resistance of decorating film can be improved on second PVDF layer, can cover by the original colour of cover for the pattern of fire-retardant decorating film itself is more clear, and when the conflagration takes place, the both sides of PVC substrate layer are provided with PVDF membrane layer, is favorable to delaying the burning of decorating film, and then reduces the smoke toxicity that the conflagration produced, is favorable to fleing.
Example 1
The embodiment mould proof antibiotic aviation decorative film comprises multilayer structure, from outside to inside in proper order includes antibiotic coating 1, first PVDF layer 2, first glue film 3, printing ink layer 4, PVC layer 5, second glue film 6, second PVDF layer 7 and third glue film 8.
The antibacterial coating 1 is prepared from silver nitrate (AgNO)3) Dissolving in ethanol, and mixing the silver nitrate and the ethanol according to the ratio of 1 g: 30ml of silver nitrate solution is formed, the porous silica gel material is placed into the silver nitrate solution to be continuously stirred at the stirring speed of 50-80 r/min, and simultaneously the mixture is heated to 80 ℃, and along with the continuous volatilization of ethanol, the silver nitrate is gradually adsorbed on the surface of the porous silica gel to prepare the antibacterial agent (Ag)+The content of (b) is 0.5-1.2 g/kg). Then dissolving the antibacterial agent (10 wt%) and PVDF powder (90 wt%) by using acetone and triethyl phosphate (volume ratio is 3:1) at 40 ℃ to prepare a hydrolysis coating solution (solid-to-liquid ratio is 1 g: 25ml), uniformly coating the coating solution on the outer surface of the first PVDF layer of the decorative film, and drying at 80 ℃ for 12 hours to form an antibacterial coating with the thickness of 5 microns.
The first PVDF layer 2 is a transparent PVDF extruded film layer, and the thickness is 45 mu m; the first glue layer 3 is a PMMA glue layer, is co-extruded with the first PVDF layer 2, and has the thickness of 10 mu m; the ink layer 4 is water-based ink and is printed on the PVC layer 5 to realize the decoration function, and the thickness is 3 mu m; the PVC layer 5 is formed by adding silicon nitrogen flame retardant, silicon dioxide nitrogen compound and inorganic filler nano calcium carbonate into PVC, wherein the flame retardant content is 25 wt%, the inorganic filler content is 10%, and the thickness is 100 mu m through calendaring; the second glue layer 6 is a PMMA glue layer, is co-extruded with the second PVDF layer 7, and has the thickness of 10 mu m; the second PVDF layer 7 is a white PVDF extruded film layer, and the thickness is 70 mu m; the third adhesive layer 8 is acrylic pressure-sensitive adhesive, 25 wt% of silicon nitrogen flame retardant silicon dioxide nitrogen compound is added, and the thickness is 10 μm; the decorative film belt PET of the embodiment is attached to the inner surface of the third adhesive layer 8 from the protective layer 9.
The process for manufacturing the decorative film of the embodiment is as follows: firstly pass through intaglio printing with PVC layer 5, form the printing ink layer 4 that has various patterns and design on its surface, PVC layer 5 stamp face is through first glue film 3, and is fixed as an organic whole with first PVDF layer 2 bonding, and the PVC layer 5 stamp back is through first and glue film 6, and is fixed as an organic whole with second PVDF layer 7 bonding, forms the decorating film base member. The antibacterial coating 1 and the third adhesive layer 8 are respectively coated on the front surface and the back surface of the decorative film matrix to form the flame-retardant antibacterial aviation decorative film. The third glue film 8 can bond the flame-retardant antibacterial aviation decorative film and the inner covering fixedly into a whole, and is attached and protected by a release protective layer 9 before use.
The flame retardant property of the decorative film of the embodiment is as follows: 60 seconds of vertical burning: the afterflame time is 0s, the combustion length is 45mm, and the afterflame time of the dropping is 0 s; rate of heat release: 5min maximum Heat Release Rate 53.88kw/m 22 min Total Heat Release amount 50.6 kw.min/m2. Smoke density: 4 minutes smoke density average 35.
The sterilization rate of the decorative film on surface escherichia coli is more than or equal to 93%, the sterilization rate of candida albicans is more than or equal to 95%, and the sterilization rate of staphylococcus aureus is more than or equal to 94%.
Example 2
The mildew-proof antibacterial aviation decoration film comprises a multilayer structure, and sequentially comprises an antibacterial coating 1, a first PVDF layer 2, a first adhesive layer 3, an ink layer 4, a PVC layer 5, a second adhesive layer 6, a second PVDF layer 7 and a third adhesive layer 8 from outside to inside.
The antibacterial coating 1 is a metal silver simple substance which is processed by grinding metal silver and has a particle diameter smaller than 100 nanometers. Activating the porous glass material by using plasma to improve the surface energy of the porous glass material, mixing the nano silver into the porous glass material within half an hour after activation, wherein the mass ratio of the nano silver to the porous glass material is 3:100, and fully stirring at the stirring speed of 30-50 r/min. After 10-15 minutes, the nano silver ions are basically and completely adsorbed on the surface of the porous glass material to prepare the antibacterial agent (the content of Ag is 1.2-3.6 g/kg). Then, dissolving the antibacterial agent (8 wt%) and PVDF powder (92 wt%) by using ethanol and N-methyl pyrrolidone (volume ratio is 5:1) at 80 ℃ to prepare a solution coating liquid (solid-liquid ratio is 1 g: 38ml), uniformly coating the coating liquid on the outer surface of the first PVDF layer, and drying for 24 hours at 90 ℃ to form an antibacterial coating with the thickness of 5 microns.
The first PVDF layer 2 is a transparent PVDF extruded film layer, and the thickness is 35 mu m; the first glue layer 3 is a PMMA glue layer, is co-extruded with the first PVDF layer 2, and has the thickness of 10 mu m; the ink layer 4 is water-based ink and is printed on the PVC layer 5 to realize the decoration function, and the thickness is 3 mu m; the PVC layer 5 is formed by adding silicon nitrogen flame retardant nitrogen polymer polyether polyol and inorganic filler whisker reinforcing agent into a PVC base material and then performing calendaring, wherein the flame retardant content is 20 wt%, the inorganic filler content is 10 wt%, and the thickness is 110 microns; the second glue layer 6 is a PMMA glue layer, is co-extruded with the second PVDF layer 7, and has the thickness of 10 mu m; the second PVDF layer 7 is a white PVDF extruded film layer with the thickness of 60 mu m; the third adhesive layer 8 is polyurethane thermal sensitive adhesive, silicon nitrogen flame retardant silicon nitrogen polymer polyether polyol is added, the content of the flame retardant is 20 wt%, and the thickness is 10 mu m.
The process for manufacturing the decorative film of the embodiment is as follows: firstly pass through intaglio printing with PVC layer 5, form the printing ink layer 4 that has various patterns and design on its surface, PVC layer 5 stamp face is through first glue film 3, and is fixed as an organic whole with first PVDF layer 2 bonding, and the PVC layer 5 stamp back is through first and glue film 6, and is fixed as an organic whole with second PVDF layer 7 bonding, forms the decorating film base member. The fuming coating 1 and the third glue layer 8 are respectively coated on the front surface and the back surface of the decorative film substrate to form the flame-retardant antibacterial aviation decorative film.
The flame retardant property of the decorative film of the embodiment is as follows: 60 seconds of vertical burning: the afterflame time is 0s, the combustion length is 48mm, and the afterflame time of the dropping is 0 s; rate of heat release: maximum 5min Heat Release Rate 48.63kw/m 22 min Total Heat Release amount 33.8 kw.min/m2(ii) a Smoke density: 4 minutes smoke density average 42.
The sterilization rate of the decorative film on surface escherichia coli is more than or equal to 92%, the sterilization rate of candida albicans is more than or equal to 96%, and the sterilization rate of staphylococcus aureus is more than or equal to 95%.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The flame-retardant antibacterial aviation decorative film is characterized by sequentially comprising an antibacterial coating, a first PVDF layer, a first adhesive layer, an ink layer, a PVC layer, a second adhesive layer, a second PVDF layer and a third adhesive layer from outside to inside, wherein the layers are sequentially compounded in a coating, calendering, co-extruding and laminating manner to form the flame-retardant antibacterial aviation decorative film.
2. The flame-retardant antibacterial aviation decorative film according to claim 1, wherein the afterflame time of 60 seconds of vertical combustion of the decorative film is not more than 15s, the combustion length is not more than 152mm, and the afterflame time of drops is not more than 3 s; 5min maximum heat release rate is less than or equal to 65kw/m22 min total heat release amount less than or equal to 65 kw.min/m2(ii) a The average smoke density is less than or equal to 200 in 4 minutes; the surface of the decorative film can inhibit or kill microorganisms, and the sterilization rate of the decorative film to escherichia coli, candida albicans and staphylococcus aureus is more than or equal to 90%.
3. The film of claim 1, wherein the antibacterial coating is prepared by fixing metallic silver or ions thereof on the surface of a porous material to prepare an antibacterial agent, dissolving the antibacterial agent and PVDF powder in one or more solvents selected from water, ethanol, acetone, triethyl phosphate and N-methyl pyrrolidone (NMP) to prepare a coating solution, uniformly coating the coating solution on the outer surface of the first PVDF layer, and drying at 60-120 ℃ to form an antibacterial coating with a thickness of 5-30 μm.
4. The flame-retardant, antibacterial aerospace decorative film of claim 1, wherein the first PVDF layer is a transparent PVDF extruded film layer, and the thickness of the first PVDF layer is 3-50 μm.
5. The flame-retardant, antimicrobial aircraft trim film of claim 1 wherein the first adhesive layer is a PMMA adhesive layer co-extruded with a first PVDF layer, the first adhesive layer having a thickness of 2 to 15 μm; the second glue layer is a PMMA glue layer and is coextruded with the second PVDF layer, and the thickness of the second glue layer is 2-15 mu m.
6. The flame-retardant antibacterial aviation decorative film according to claim 1, wherein the ink layer is water-based ink, and is printed on the PVC layer, and the thickness of the ink layer is 0.5-10 μm.
7. The flame-retardant antibacterial aviation decorative film according to claim 1, wherein the PVC layer is formed by calendering a PVC substrate after adding a silicon nitrogen flame retardant and an inorganic filler, the flame retardant content is 5-30 wt%, the inorganic filler content is 10-20 wt%, and the thickness of the PVC layer is 40-200 μm.
8. The flame-retardant, antibacterial aerospace decorative film of claim 1, wherein the second PVDF layer is a white PVDF extruded film layer, and the thickness of the second PVDF layer is 20-75 μm.
9. The film of claim 1, wherein the third adhesive layer is a pressure-sensitive adhesive or a heat-sensitive adhesive, and is one or more of epoxy, acrylic, polyurethane, maleimide, and cyanate adhesive; adding a silicon nitrogen flame retardant into the third adhesive layer, wherein the content of the flame retardant is 5-40 wt%; the thickness of the third glue layer is 5-50 μm.
10. The film of claim 9, wherein when the third adhesive layer is a pressure sensitive adhesive, the film further comprises a release protective layer attached to an inner surface of the third adhesive layer, wherein the release protective layer is a thin film made of one or more of PP, PE and PET, and has a thickness of 10-50 μm.
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