CN116082939A - Ultraviolet-proof paint film - Google Patents
Ultraviolet-proof paint film Download PDFInfo
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- CN116082939A CN116082939A CN202211652462.2A CN202211652462A CN116082939A CN 116082939 A CN116082939 A CN 116082939A CN 202211652462 A CN202211652462 A CN 202211652462A CN 116082939 A CN116082939 A CN 116082939A
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- ultraviolet
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- paint film
- agent
- proof
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- 239000003973 paint Substances 0.000 title claims abstract description 90
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 76
- 229920006124 polyolefin elastomer Polymers 0.000 claims abstract description 34
- LNTHITQWFMADLM-UHFFFAOYSA-N gallic acid Chemical compound OC(=O)C1=CC(O)=C(O)C(O)=C1 LNTHITQWFMADLM-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000004814 polyurethane Substances 0.000 claims abstract description 17
- 229940074391 gallic acid Drugs 0.000 claims abstract description 15
- 235000004515 gallic acid Nutrition 0.000 claims abstract description 15
- 229920002635 polyurethane Polymers 0.000 claims abstract description 14
- 238000010345 tape casting Methods 0.000 claims abstract description 6
- 150000003918 triazines Chemical class 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims abstract description 3
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 claims description 44
- 229960001545 hydrotalcite Drugs 0.000 claims description 44
- 229910001701 hydrotalcite Inorganic materials 0.000 claims description 44
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 24
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 24
- -1 triazine compound Chemical class 0.000 claims description 20
- 229920001400 block copolymer Polymers 0.000 claims description 18
- 229920005604 random copolymer Polymers 0.000 claims description 18
- 239000004433 Thermoplastic polyurethane Substances 0.000 claims description 17
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 17
- 239000000945 filler Substances 0.000 claims description 16
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 15
- IHBCFWWEZXPPLG-UHFFFAOYSA-N [Ca].[Zn] Chemical compound [Ca].[Zn] IHBCFWWEZXPPLG-UHFFFAOYSA-N 0.000 claims description 13
- 229920001971 elastomer Polymers 0.000 claims description 13
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 12
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 12
- 239000004408 titanium dioxide Substances 0.000 claims description 12
- 239000011787 zinc oxide Substances 0.000 claims description 12
- 239000000806 elastomer Substances 0.000 claims description 11
- 239000002994 raw material Substances 0.000 claims description 11
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 238000005266 casting Methods 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 4
- 239000002519 antifouling agent Substances 0.000 claims description 4
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 3
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 3
- IPHDQSNAYMVQCP-UHFFFAOYSA-N 2,6-dichloro-1h-triazine Chemical compound ClN1NC(Cl)=CC=N1 IPHDQSNAYMVQCP-UHFFFAOYSA-N 0.000 claims description 2
- ZSSVCEUEVMALRD-UHFFFAOYSA-N 2-[4,6-bis(2,4-dimethylphenyl)-1,3,5-triazin-2-yl]-5-(octyloxy)phenol Chemical compound OC1=CC(OCCCCCCCC)=CC=C1C1=NC(C=2C(=CC(C)=CC=2)C)=NC(C=2C(=CC(C)=CC=2)C)=N1 ZSSVCEUEVMALRD-UHFFFAOYSA-N 0.000 claims description 2
- UQAMDAUJTXFNAD-UHFFFAOYSA-N 4-(4,6-dichloro-1,3,5-triazin-2-yl)morpholine Chemical compound ClC1=NC(Cl)=NC(N2CCOCC2)=N1 UQAMDAUJTXFNAD-UHFFFAOYSA-N 0.000 claims description 2
- 229920002943 EPDM rubber Polymers 0.000 claims description 2
- 229920001912 maleic anhydride grafted polyethylene Polymers 0.000 claims description 2
- 238000006116 polymerization reaction Methods 0.000 claims description 2
- 235000012239 silicon dioxide Nutrition 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000002360 preparation method Methods 0.000 abstract description 28
- 230000006750 UV protection Effects 0.000 abstract description 22
- 230000007797 corrosion Effects 0.000 abstract description 8
- 238000005260 corrosion Methods 0.000 abstract description 8
- 230000000052 comparative effect Effects 0.000 description 16
- 238000012360 testing method Methods 0.000 description 7
- 229920003225 polyurethane elastomer Polymers 0.000 description 6
- 238000001035 drying Methods 0.000 description 4
- QUAMTGJKVDWJEQ-UHFFFAOYSA-N octabenzone Chemical compound OC1=CC(OCCCCCCCC)=CC=C1C(=O)C1=CC=CC=C1 QUAMTGJKVDWJEQ-UHFFFAOYSA-N 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000013329 compounding Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920006264 polyurethane film Polymers 0.000 description 2
- 230000004224 protection Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000004383 yellowing Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 229910000611 Zinc aluminium Inorganic materials 0.000 description 1
- HXFVOUUOTHJFPX-UHFFFAOYSA-N alumane;zinc Chemical compound [AlH3].[Zn] HXFVOUUOTHJFPX-UHFFFAOYSA-N 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002981 blocking agent Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Classifications
-
- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- C—CHEMISTRY; METALLURGY
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/221—Oxides; Hydroxides of metals of rare earth metal
- C08K2003/2213—Oxides; Hydroxides of metals of rare earth metal of cerium
-
- C—CHEMISTRY; METALLURGY
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention provides an ultraviolet-proof paint film, which comprises, by weight, 30-50 parts of polyurethane, 20-40 parts of polyolefin elastomer, 3-7 parts of inorganic ultraviolet-proof agent and 2-4 parts of organic ultraviolet-proof agent; the organic anti-ultraviolet agent comprises a combination of gallic acid and triazine compounds. The preparation method of the ultraviolet-proof paint film comprises the following steps: mixing polyurethane, polyolefin elastomer, inorganic anti-ultraviolet agent and organic anti-ultraviolet agent, and carrying out tape casting to obtain the ultraviolet-proof paint film; according to the ultraviolet-proof paint film provided by the invention, the polyurethane and the polyolefin elastomer with specific contents are compounded, and the organic ultraviolet-proof agent and the inorganic ultraviolet-proof agent with specific combinations are added at the same time, so that the ultraviolet-proof paint film can resist the corrosion of the ultraviolet-proof paint; and the self ultraviolet resistance is excellent, and simultaneously, the mechanical property is good, the high and low temperature resistance is realized, the deformation resistance is realized, and the curling is avoided.
Description
Technical Field
The invention belongs to the technical field of film materials, and particularly relates to an ultraviolet-proof paint film.
Background
With the growing tension of global temperature rise and energy and the wide application of glass in the building or automobile industry, functional protective films such as heat insulation, ultraviolet protection, explosion protection and energy saving protective films are also attracting more and more attention. In recent years, due to the continuous destruction of the ozone layer, the radiation amount of ultraviolet rays reaching the earth is increased, and the use of materials is also affected while the health of human beings is affected, so that ultraviolet-proof materials are generated, wherein the more commonly used materials are acrylate ultraviolet-proof paint, but the ultraviolet-proof paint has corrosion effect, and the development of a film material capable of resisting the corrosion of the ultraviolet-proof paint is needed.
The polyurethane elastomer is a high molecular synthetic material with the performance between rubber and plastic, and is characterized by wide hardness adjustment range; the elasticity of the rubber and the hardness of the plastic are both provided; the polyurethane elastomer has good mechanical property, wear resistance and rebound resilience, so the polyurethane elastomer is widely applied, but the polyurethane composite material in the prior art has poor physical and mechanical properties, poor yellowing resistance and ultraviolet resistance and low service life; for example, CN101735596a discloses a thermoplastic polyurethane elastomer, the preparation raw materials of which include 4,4' -diphenylmethane-diisocyanate, polybutylene adipate, 1, 4-butanediol, ethylene glycol, an antioxidant, a lubricant, an environmental protection catalyst, an ultraviolet absorber, a light stabilizer and a hydrolysis resistance agent. The thermoplastic polyurethane elastomer has good ultraviolet resistance, but has poor deformation resistance, low temperature resistance and poor heat resistance.
CN211616893U discloses an ultraviolet resistant TPU film comprising a TPU film body; the TPU film main body comprises an ultraviolet resistant layer, an elastic layer, a waterproof layer and an abrasion resistant coating which are sequentially arranged; the waterproof layer is a polyurethane film; the wear-resistant coating is polyurethane resin; the TPU film is prepared by compounding an ultraviolet resistant layer, an elastic layer, a waterproof layer and an abrasion resistant coating through heating and pressurizing; the integral structural strength and the firmness of the ultraviolet-resistant TPU film are improved, and the use safety is ensured; however, the ultraviolet resistance and the corrosion resistance of the TPU film are required to be further improved.
Therefore, development of a polyurethane film which can resist corrosion of ultraviolet-proof paint, is not curled and deformed in ultraviolet-proof paint, has excellent ultraviolet-proof performance, good mechanical performance and low-temperature and high-temperature resistance, and is a technical problem to be solved in the field.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide an ultraviolet-proof paint film and a preparation method thereof. The ultraviolet-proof paint film is compounded by polyurethane with specific content and polyolefin elastomer, and simultaneously, the organic ultraviolet-proof agent and the inorganic ultraviolet-proof agent with specific combination are added, so that the ultraviolet-proof paint film can resist the corrosion of the ultraviolet-proof paint, and is not curled and deformed in the ultraviolet-proof paint; and the ultraviolet resistance is excellent, the mechanical property is good, and the high and low temperature resistance is realized.
To achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides an ultraviolet-proof paint film, wherein the ultraviolet-proof paint film comprises, by weight, 30-50 parts of polyurethane, 20-40 parts of polyolefin elastomer, 3-7 parts of inorganic ultraviolet-proof agent and 2-4 parts of organic ultraviolet-proof agent; the organic anti-ultraviolet agent comprises a combination of gallic acid and triazine compounds.
According to the invention, the mechanical property of the film can be improved by compounding the polyurethane with the polyolefin elastomer with specific content, the low temperature resistance and the high temperature resistance are good, the deformation is prevented, and the film cannot be curled in the ultraviolet-proof paint; meanwhile, the ultraviolet resistance of the film is improved in various ways through compounding the specific combination of the organic ultraviolet resistance agent and the inorganic ultraviolet resistance agent.
Preferably, the raw materials of the ultraviolet-proof paint film comprise 30-50 parts of polyurethane in parts by weight, and can be 31 parts, 32 parts, 33 parts, 34 parts, 35 parts, 36 parts, 37 parts, 38 parts, 39 parts, 40 parts, 41 parts, 42 parts, 43 parts, 44 parts, 45 parts, 46 parts, 47 parts, 48 parts, 49 parts and the like.
The raw materials of the ultraviolet-proof paint film comprise 20-40 parts of polyolefin elastomer by weight, and for example, 21 parts, 22 parts, 23 parts, 24 parts, 25 parts, 26 parts, 27 parts, 28 parts, 29 parts, 30 parts, 31 parts, 32 parts, 33 parts, 34 parts, 35 parts, 36 parts, 37 parts, 38 parts, 39 parts and the like.
The raw materials of the ultraviolet-proof paint film comprise 3-7 parts by weight of inorganic ultraviolet-proof agent, such as 3.2 parts, 3.4 parts, 3.6 parts, 3.8 parts, 4 parts, 4.2 parts, 4.4 parts, 4.6 parts, 4.8 parts, 5 parts, 5.2 parts, 5.4 parts, 5.6 parts, 5.8 parts, 6 parts, 6.2 parts, 6.4 parts, 6.6 parts, 6.8 parts and the like.
The raw materials of the ultraviolet-proof paint film comprise 2-4 parts of organic ultraviolet-proof agent by weight, such as 2.2 parts, 2.4 parts, 2.6 parts, 2.8 parts, 3 parts, 3.2 parts, 3.4 parts, 3.6 parts, 3.8 parts and the like.
Preferably, the polyurethane comprises a thermoplastic polyurethane elastomer.
Preferably, the polyolefin elastomer comprises at least one of an ethylene-octene block copolymer, an ethylene-octene random copolymer, an ethylene-vinyl acetate copolymer, or an ethylene propylene diene monomer.
Preferably, the polyolefin elastomer comprises a combination of an ethylene-octene block copolymer and an ethylene-octene random copolymer.
Preferably, the mass ratio of the ethylene-octene random copolymer to the ethylene-octene block copolymer in the polyolefin elastomer is (3.5-6.5): 1, which may be, for example, 3.6:1, 3.8:1, 4:1, 4.2:1, 4.4:1, 4.6:1, 4.8:1, 5:1, 5.2:1, 5.4:1, 5.6:1, 5.8:1, 6:1, 6.2:1, 6.4:1, etc.
In the invention, the polyolefin elastomer is selected from the combination of the ethylene-octene random copolymer and the ethylene-octene block copolymer, and the ethylene-octene random copolymer and the ethylene-octene block copolymer are in a specific mass ratio range, so that the film has excellent ultraviolet resistance, the strength and the toughness of the film can be improved, the film has deformation resistance and low-temperature resistance, and no curling deformation can occur in the ultraviolet-proof paint; the mass ratio is less than 3.5:1, the ultraviolet resistance of the film is reduced, and the strength and the low temperature resistance are reduced; and the ratio is more than 6.5:1, and the deformation resistance and the high temperature resistance and the toughness are reduced.
Preferably, the mass ratio of the inorganic anti-ultraviolet agent to the organic anti-ultraviolet agent is (2-3): 1, for example, may be 2.1:1, 2.15:1, 2.2:1, 2.25:1, 2.3:1, 2.35:1, 2.4:1, 2.45:1, 2.5:1, 2.55:1, 2.6:1, 2.65:1, 2.7:1, 2.75:1, 2.8:1, 2.85:1, 2.9:1, 2.95:1, etc.
According to the invention, the inorganic anti-ultraviolet agent and the organic anti-ultraviolet agent can be synergistically enhanced under a specific proportion, so that the ultraviolet resistance of the film is improved, and the film is yellowing-resistant.
Preferably, the inorganic anti-uv agent comprises at least one of titanium dioxide, silicon dioxide, zinc oxide or cerium oxide.
Preferably, the inorganic uv blocking agent comprises a combination of titanium dioxide, zinc oxide and cerium oxide.
Preferably, the mass ratio of titanium dioxide, zinc oxide and cerium oxide in the inorganic anti-ultraviolet agent is 1 (1-1.5): 2.5-4, wherein specific values in (1-1.5) can be, for example, 1.05, 1.08, 1.1, 1.12, 1.15, 1.17, 1.2, 1.22, 1.25, 1.28, 1.3, 1.32, 1.35, 1.38, 1.4, 1.42, 1.45, 1.48 and the like; specific values in (2.5 to 4) may be, for example, 2.52, 2.55, 2.58, 2.6, 2.62, 2.64, 2.68, 2.7, 2.72, 2.75, 2.78, 2.8, 2.85, 2.88, 2.9, 2.92, 2.95, 2.98, 3, 3.2, 3.25, 3.3, 3.35, 3.4, 3.45, 3.5, 3.55, 3.6, 3.65, 3.7, 3.75, 3.8, 3.85, 3.9, 3.95, 3.98, etc.
In the invention, the inorganic anti-ultraviolet agent has excellent ultraviolet resistance under a specific proportion.
Preferably, the mass ratio of gallic acid to triazine compound in the organic anti-ultraviolet agent is 1 (0.5-1.5), for example, may be 1:0.52, 1:0.55, 1:0.58, 1:0.6, 1:0.62, 1:0.65, 1:0.68, 1:0.7, 1:0.72, 1:0.75, 1:0.78, 1:0.8, 1:0.85, 1:0.9, 1:0.95, 1:1, 1:1.15, 1:1.2, 1:1.25, 1:1.3, 1:1.35, 1:1.4, 1:1.45, etc.
In the invention, the organic anti-ultraviolet agent is selected from the combination of gallic acid and triazine compounds, and the gallic acid and triazine compounds have better anti-ultraviolet effect under a specific proportion.
Preferably, the triazine compound includes at least one of 2- (4, 6-bis (2, 4-dimethylphenyl) -1,3, 5-triazin-2-yl) -5-octyloxyphenol, a polymerization product of N, N' -bis (2, 6-tetramethyl-4-piperidinyl) -1, 6-hexamethylenediamine and 2, 4-dichloro-6- (4-morpholinyl) -1,3, 5-triazine, or triazine-5.
Preferably, the raw materials of the ultraviolet-proof paint film further comprise 15-30 parts of filler in parts by weight, for example, 16 parts, 17 parts, 18 parts, 19 parts, 20 parts, 21 parts, 22 parts, 23 parts, 24 parts, 25 parts, 26 parts, 27 parts, 28 parts, 29 parts and the like.
Preferably, the filler comprises hydrotalcite.
Preferably, the hydrotalcite comprises a combination of magnesium aluminum hydrotalcite, calcium zinc hydrotalcite and magnesium aluminum zinc hydrotalcite.
Preferably, the mass ratio of the magnesium aluminum hydrotalcite to the calcium zinc hydrotalcite to the magnesium aluminum zinc hydrotalcite is 1 (0.2-0.8): 1.5-3.5, wherein the specific value in (0.2-0.8) can be, for example, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75 and the like; specific values in (1.5 to 3.5) may be, for example, 1.6, 1.7, 1.8, 1.9, 2, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3, 3.1, 3.2, 3.3, 3.4, etc.
In the invention, hydrotalcite with specific combination and proportion is selected as the filler, and the hydrotalcite is matched with the use of an organic anti-ultraviolet agent to synergistically improve the ultraviolet resistance of the film; in addition, the film can have excellent mechanical properties, flame retardant property, thermal stability and the like; the hydrotalcite is not a specific combination or mass ratio, and the ultraviolet resistance and mechanical properties of the film are reduced.
Preferably, the raw materials of the ultraviolet-proof paint film further comprise 0.5-15 parts of compatilizer in parts by weight, for example, 1 part, 2 parts, 4 parts, 6 parts, 8 parts, 10 parts, 12 parts, 14 parts and the like.
Preferably, the compatibilizer comprises a maleic anhydride-based compatibilizer.
Preferably, the maleic anhydride-based compatibilizer comprises at least one of a maleic anhydride grafted ethylene-octene random copolymer, a maleic anhydride grafted ethylene-octene block copolymer, a maleic anhydride grafted polyethylene, or a maleic anhydride grafted styrene.
In the invention, a vulcanizing agent can be added according to the use requirement to carry out vulcanization crosslinking; the raw materials of the ultraviolet-proof paint film also comprise 0.05 to 0.5 part of vulcanizing agent, for example, 0.1 part, 0.2 part, 0.3 part, 0.4 part and the like.
In a second aspect, the present invention provides a method for preparing an anti-uv paint film according to the first aspect, the method comprising the steps of:
mixing polyurethane, polyolefin elastomer, inorganic anti-ultraviolet agent and organic anti-ultraviolet agent, and carrying out tape casting to obtain the ultraviolet-proof paint film.
Preferably, the mixed material further comprises a filler and/or a compatibilizer.
In the invention, the step of drying is also included before the raw materials of the ultraviolet-proof paint film are mixed.
Preferably, the drying temperature is 80 to 100 ℃, for example, 85 ℃, 90 ℃, 95 ℃ and the like.
Preferably, the drying time is 2 to 4 hours, for example, 2 hours, 2.5 hours, 3 hours, 3.5 hours, etc.
Preferably, the temperature of the casting is 160 to 210 ℃, and for example, 170 ℃, 175 ℃, 180 ℃, 185 ℃, 190 ℃, 195 ℃, 200 ℃, 205 ℃, and the like can be used.
In the invention, the casting molding equipment is a casting machine, and the temperatures of all sections of the casting machine are set as follows: the temperature of the barrel is 180-200 ℃ (for example, 185 ℃, 190 ℃ and 195 ℃); the temperature of the filter screen is 160-210 ℃ (for example, 170 ℃, 180 ℃, 190 ℃ and 200 ℃); the temperature of the elbow is 170-190 ℃ (for example, 175 ℃, 180 ℃ and 185 ℃); the connection temperature is 170-190 ℃ (for example, 175 ℃, 180 ℃, 185 ℃); the die temperature is 190 to 210 ℃ (for example, 195 ℃, 200 ℃, 205 ℃).
The numerical ranges recited herein include not only the recited point values, but also any point values between the recited numerical ranges that are not recited, and are limited to, and for the sake of brevity, the invention is not intended to be exhaustive of the specific point values that the recited range includes.
Compared with the prior art, the invention has the beneficial effects that:
according to the ultraviolet-proof paint film provided by the invention, the polyurethane and the polyolefin elastomer are compounded in a specific content, and the organic ultraviolet-proof agent and the inorganic ultraviolet-proof agent which are combined in a specific manner are added, so that the ultraviolet-proof paint film can resist the corrosion of the ultraviolet-proof paint, and is not curled or deformed in the ultraviolet-proof paint; and the ultraviolet resistance is excellent, the mechanical property is good, and the high and low temperature resistance is realized.
Detailed Description
The technical scheme of the invention is further described by the following specific embodiments. It will be apparent to those skilled in the art that the examples are merely to aid in understanding the invention and are not to be construed as a specific limitation thereof.
In the present invention, the materials used in all examples and comparative examples are as follows, unless otherwise specified:
thermoplastic polyurethane elastomer: science of creating, 3380A
Ethylene-octene random copolymer: U.S. Dow 8407
Ethylene-octene block copolymer: U.S. Dow 9500
Maleic anhydride grafted POE: exxon Mobil VA1801 in the United states
Vulcanizing agent: DCP (DCP)
Example 1
The embodiment provides an ultraviolet-proof paint film, which comprises 40 parts of thermoplastic polyurethane elastomer, 30 parts of polyolefin elastomer, 5 parts of inorganic ultraviolet-proof agent, 2 parts of organic ultraviolet-proof agent, 20 parts of filler and 10 parts of maleic anhydride grafted POE in parts by weight; the polyolefin elastomer comprises an ethylene-octene random copolymer and an ethylene-octene block copolymer in a mass ratio of 5:1; the inorganic anti-ultraviolet agent comprises titanium dioxide, zinc oxide and cerium oxide in a mass ratio of 1:1.2:3.2; the organic anti-ultraviolet agent comprises gallic acid and Chiguard 1064 in a mass ratio of 1:1; the filler comprises magnesium aluminum hydrotalcite, calcium zinc hydrotalcite and magnesium aluminum zinc hydrotalcite in a mass ratio of 1:0.5:2.5.
The embodiment provides a preparation method of the ultraviolet-proof paint film, which specifically comprises the following steps:
respectively drying thermoplastic polyurethane elastomer, ethylene-octene random copolymer, ethylene-octene segmented copolymer, titanium dioxide, zinc oxide, cerium oxide, gallic acid, chiguard 1064, magnesium aluminum hydrotalcite, calcium zinc hydrotalcite, magnesium aluminum zinc hydrotalcite and maleic anhydride grafted POE at 90 ℃ for 3 hours, and carrying out tape casting molding by a tape casting machine, wherein the temperature of each section of the tape casting machine is set as follows: the temperature of the charging barrel is 180 ℃; the temperature of the filter screen is 160 ℃; the temperature of the elbow is 170 ℃; the connection temperature is 180 ℃; the die head temperature is 200 ℃, and the ultraviolet-proof paint film is obtained.
Example 2
The embodiment provides an ultraviolet-proof paint film, which comprises, by weight, 35 parts of thermoplastic polyurethane elastomer, 25 parts of polyolefin elastomer, 7 parts of inorganic ultraviolet-resistant agent, 3.5 parts of organic ultraviolet-resistant agent, 25 parts of filler and 15 parts of maleic anhydride grafted POE; the polyolefin elastomer comprises an ethylene-octene random copolymer and an ethylene-octene block copolymer in a mass ratio of 4:1; the inorganic anti-ultraviolet agent comprises titanium dioxide, zinc oxide and cerium oxide in a mass ratio of 1:1.4:3.8; the organic anti-ultraviolet agent comprises gallic acid and Chiguard 1064 in a mass ratio of 1:0.6; the filler comprises magnesium aluminum hydrotalcite, calcium zinc hydrotalcite and magnesium aluminum zinc hydrotalcite in a mass ratio of 1:0.2:3.5.
The embodiment provides a preparation method of the ultraviolet-proof paint film, and the specific steps are the same as those of the embodiment 1.
Example 3
The embodiment provides an ultraviolet-proof paint film, which comprises, by weight, 45 parts of thermoplastic polyurethane elastomer, 35 parts of polyolefin elastomer, 4 parts of inorganic ultraviolet-proof agent, 2 parts of organic ultraviolet-proof agent, 15 parts of filler, 5 parts of maleic anhydride grafted POE and 0.2 part of vulcanizing agent; the polyolefin elastomer comprises an ethylene-octene random copolymer and an ethylene-octene block copolymer in a mass ratio of 6:1; the inorganic anti-ultraviolet agent comprises titanium dioxide, zinc oxide and cerium oxide in a mass ratio of 1:1:2.5; the organic anti-ultraviolet agent comprises gallic acid and triazine-5 in a mass ratio of 1:1.3; the filler comprises magnesium aluminum hydrotalcite, calcium zinc hydrotalcite and magnesium aluminum zinc hydrotalcite with the mass ratio of 1:0.8:1.5.
The embodiment provides a preparation method of the ultraviolet-proof paint film, and the specific steps are the same as those of the embodiment 1.
Example 4
This example provides an ultraviolet-blocking paint film which differs from example 1 only in that the total amount of the polyolefin elastomer is unchanged, the mass ratio of the ethylene-octene random copolymer to the ethylene-octene block copolymer is 3:1, and other components, amounts and preparation methods are the same as in example 1.
Example 5
This example provides an ultraviolet-blocking paint film which differs from example 1 only in that the total amount of the polyolefin elastomer is unchanged, the mass ratio of the ethylene-octene random copolymer to the ethylene-octene block copolymer is 7:1, and other components, amounts and preparation methods are the same as in example 1.
Example 6
This example provides an ultraviolet-blocking paint film which differs from example 1 only in that the ethylene-octene block copolymer is replaced with an equivalent amount of ethylene-vinyl acetate copolymer (Dow, appel-53070), and the other components, amounts and preparation methods are the same as in example 1.
Example 7
This example provides an ultraviolet-blocking paint film which differs from example 1 only in that the total amount of polyolefin elastomer is unchanged, no ethylene-octene block copolymer is present, and other components, amounts and preparation methods are the same as in example 1.
Example 8
This example provides an ultraviolet-blocking paint film which differs from example 1 only in that the total amount of polyolefin elastomer is unchanged, no ethylene-octene random copolymer is present, and other components, amounts and preparation methods are the same as in example 1.
Example 9
The present example provides an ultraviolet-proof paint film, which is different from example 1 only in that the total amount of the ultraviolet-proof agent is unchanged, the mass ratio of the inorganic ultraviolet-proof agent to the organic ultraviolet-proof agent is 1:1, and other components, amounts and preparation methods are the same as example 1.
Example 10
The present example provides an anti-ultraviolet paint film, which is different from example 1 only in that the total amount of the anti-ultraviolet agent is unchanged, the mass ratio of the inorganic anti-ultraviolet agent to the organic anti-ultraviolet agent is 4:1, and other components, amounts and preparation methods are the same as example 1.
Example 11
This example provides an ultraviolet-proof paint film which differs from example 1 only in that the mass ratio of titanium dioxide, zinc oxide and cerium oxide in the inorganic ultraviolet-proof agent is 1:0.5:4.5, and other components, amounts and preparation methods are the same as in example 1.
Example 12
The present example provides an ultraviolet-proof paint film, which is different from example 1 only in that the mass ratio of titanium dioxide, zinc oxide and cerium oxide in the inorganic ultraviolet-proof agent is 1:2:1, and other components, amounts and preparation methods are the same as those of example 1.
Example 13
The present example provides an ultraviolet-proof paint film, which is different from example 1 only in that the mass ratio of gallic acid to triazine compound in the organic ultraviolet-proof agent is 1:0.2, and other components, amounts and preparation methods are the same as example 1.
Example 14
The present example provides an ultraviolet-proof paint film, which is different from example 1 only in that the mass ratio of gallic acid to triazine compound in the organic ultraviolet-proof agent is 1:2, and other components, amounts and preparation methods are the same as example 1.
Example 15
The present example provides an ultraviolet-proof paint film, which differs from example 1 only in that the mass ratio of the magnesium aluminum hydrotalcite, the calcium zinc hydrotalcite and the magnesium aluminum zinc hydrotalcite is 1:0.05:4.5, and other components, amounts and preparation methods are the same as those of example 1.
Example 16
The present example provides an ultraviolet-proof paint film, which differs from example 1 only in that the mass ratio of the magnesium aluminum hydrotalcite, the calcium zinc hydrotalcite and the magnesium aluminum zinc hydrotalcite is 1:1.5:0.5, and other components, amounts and preparation methods are the same as those of example 1.
Example 17
This example provides an ultraviolet-proof paint film which differs from example 1 only in that the calcium zinc hydrotalcite is replaced by zinc aluminum hydrotalcite, and other components, amounts and preparation methods are the same as in example 1.
Example 18
This example provides an ultraviolet-protective paint film which differs from example 1 only in that the total amount of filler is unchanged, no calcium zinc hydrotalcite is present, and other components, amounts and preparation methods are the same as in example 1.
Example 19
This example provides an ultraviolet-proof paint film which differs from example 1 only in that the total amount of the filler is unchanged, no calcium zinc hydrotalcite and no zinc magnesium aluminum hydrotalcite are present, and other components, amounts and preparation methods are the same as in example 1.
Comparative example 1
This comparative example provides an ultraviolet-proof paint film which differs from example 1 only in that the gallic acid is replaced with an equivalent amount of 2-hydroxy-4-n-octoxybenzophenone, and the other components, amounts and preparation methods are the same as in example 1.
Comparative example 2
This comparative example provides an ultraviolet-proof paint film which differs from example 1 only in that the triazine compound is replaced with an equivalent amount of 2-hydroxy-4-n-octoxybenzophenone, and the other components, amounts and preparation methods are the same as in example 1.
Comparative example 3
This comparative example provides an ultraviolet-proof paint film which differs from example 1 only in that the total amount of the organic ultraviolet-proof agent is unchanged, gallic acid is absent, and other components, amounts and preparation methods are the same as in example 1.
Comparative example 4
This comparative example provides an ultraviolet-proof paint film which differs from example 1 only in that the total amount of the organic ultraviolet-proof agent is unchanged, no triazine compound is contained, and other components, amounts and preparation methods are the same as those of example 1.
Comparative example 5
This comparative example provides an ultraviolet-proof paint film differing from example 1 only in that the thermoplastic polyurethane elastomer is 25 parts, the polyolefin elastomer is 45 parts, and other components, amounts and preparation methods are the same as example 1.
Comparative example 6
This comparative example provides an ultraviolet-proof paint film differing from example 1 only in that the thermoplastic polyurethane elastomer is 60 parts by weight, the polyolefin elastomer is 10 parts by weight, and other components, amounts and preparation methods are the same as those of example 1.
Performance testing
(1) Ultraviolet-proof paint performance: the ultraviolet-proof paint films provided in examples 1 to 19 and comparative examples 1 to 6 are soaked in ultraviolet-proof paint (Dyson S50-8) for 12 hours, and the ultraviolet-proof paint is not curled or deformed, and is marked as 'qualified'; the film is curled or deformed and is marked as 'unqualified';
(2) Ultraviolet resistance: aging for 168 hours in an ultraviolet aging box at 75 ℃, measuring the tensile strength according to a GB/T528-2009 method, and evaluating the ultraviolet resistance of the film;
(3) Deformation resistance: the test is carried out according to the method of GB/T10653-2001, and the compression is carried out at 70 ℃ for 50%;
(4) Tensile strength: testing according to GB/T528-2009 method;
(5) Elongation at break: testing according to GB/T528-2009 method;
(6) -cold resistance coefficient at 40 ℃): testing according to HG/T3866-2008 method;
(7) Heat shrinkage rate: test conditions: recording the transverse and longitudinal dimensional changes at 150 ℃ for 5 min;
wherein, heat shrinkage = reduced film size/original film size x 100%.
The specific test results are shown in table 1:
TABLE 1
As can be seen from the table, the ultraviolet-proof paint film provided by the invention is compounded by polyurethane and polyolefin elastomer with specific content, and simultaneously, the organic ultraviolet-proof agent and the inorganic ultraviolet-proof agent with specific combination are added, so that the ultraviolet-proof paint film is not curled and deformed after being soaked in the ultraviolet-proof paint for 12 hours; and the ultraviolet resistance is excellent, and simultaneously, the mechanical property is good, the deformation resistance, the low temperature resistance and the heat resistance and the dimensional stability are good.
From examples 1 to 3, the tensile strength of the ultraviolet-proof paint film is 48 to 50MPa, and after the ultraviolet ageing for 168 hours at 75 ℃, the tensile strength still can reach 45 to 47MPa, and the ultraviolet-proof paint film has excellent ultraviolet-proof performance; the ultraviolet-proof paint film has compression permanent deformation of 23-25%, elongation at break of 800-850%, cold resistance coefficient of 0.62-0.65 at-40 ℃, transverse shrinkage of 1.1-1.3% at 150 ℃, longitudinal shrinkage of 2.2-2.6%, stable size and good heat resistance.
As is clear from a comparison of examples 1 and examples 4 to 8, the polyolefin elastomer is not specifically combined or compounded, and the ultraviolet-proof paint of the ultraviolet-proof paint film has poor ultraviolet-proof performance, low mechanical performance, low temperature resistance or poor heat resistance; as is clear from the comparison between examples 1 and 9 to 14, the ultraviolet resistance of the film is poor because the ultraviolet resistance agent is not specifically combined and mixed; as is evident from a comparison of example 1 with examples 15 to 19, the hydrotalcite is not specifically combined and compounded, and the film has reduced UV resistance and reduced mechanical properties.
As is clear from the comparison of example 1 with comparative examples 1 to 4, the organic anti-UV agent is not a specific combination, and the anti-UV performance of the film is greatly reduced; as is evident from a comparison of example 1 with comparative examples 5 and 6, the polyurethane and polyolefin elastomer are not particularly contained, and the combination properties of the ultraviolet-proof paint film are deteriorated.
In conclusion, the ultraviolet-proof paint film provided by the invention is compounded by adopting polyurethane and polyolefin elastomer with specific content, and the organic ultraviolet-proof agent and the inorganic ultraviolet-proof agent with specific combination are added, and meanwhile, the hydrotalcite filler with specific combination and proportion is added, so that the ultraviolet-proof paint film has excellent ultraviolet-proof performance, good mechanical performance, deformation resistance, low temperature resistance, heat resistance and dimensional stability, can resist corrosion of ultraviolet-proof paint, and is not curled and deformed in the ultraviolet-proof paint.
While the foregoing is directed to embodiments of the present invention, other and further details of the invention may be had by the present invention, it should be understood that the foregoing description is merely illustrative of the present invention and that no limitations are intended to the scope of the invention, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the invention.
Claims (10)
1. The ultraviolet-proof paint film is characterized by comprising, by weight, 30-50 parts of polyurethane, 20-40 parts of polyolefin elastomer, 3-7 parts of inorganic ultraviolet-proof agent and 2-4 parts of organic ultraviolet-proof agent;
the organic anti-ultraviolet agent comprises a combination of gallic acid and triazine compounds.
2. The uv resistant paint film of claim 1 wherein said polyurethane comprises a thermoplastic polyurethane elastomer;
preferably, the polyolefin elastomer comprises at least one of an ethylene-octene block copolymer, an ethylene-octene random copolymer, an ethylene-vinyl acetate copolymer, or an ethylene propylene diene monomer;
preferably, the polyolefin elastomer comprises a combination of an ethylene-octene block copolymer and an ethylene-octene random copolymer;
preferably, the mass ratio of the ethylene-octene random copolymer to the ethylene-octene block copolymer in the polyolefin elastomer is (3.5-6.5): 1.
3. The ultraviolet-proof paint film according to claim 1 or 2, wherein the mass ratio of the inorganic ultraviolet-proof agent to the organic ultraviolet-proof agent is (2-3): 1;
preferably, the inorganic anti-uv agent comprises at least one of titanium dioxide, silicon dioxide, zinc oxide or cerium oxide;
preferably, the inorganic anti-uv agent comprises a combination of titanium dioxide, zinc oxide and cerium oxide;
preferably, the mass ratio of titanium dioxide, zinc oxide and cerium oxide in the inorganic anti-ultraviolet agent is 1 (1-1.5) to 2.5-4.
4. The ultraviolet-proof paint film according to any one of claims 1 to 3, wherein the mass ratio of gallic acid to triazine compound in the organic ultraviolet-proof agent is 1 (0.5 to 1.5);
preferably, the triazine compound includes at least one of 2- (4, 6-bis (2, 4-dimethylphenyl) -1,3, 5-triazin-2-yl) -5-octyloxyphenol, a polymerization product of N, N' -bis (2, 6-tetramethyl-4-piperidinyl) -1, 6-hexamethylenediamine and 2, 4-dichloro-6- (4-morpholinyl) -1,3, 5-triazine, or triazine-5.
5. The ultraviolet-proof paint film according to any one of claims 1 to 4, wherein the raw material of the ultraviolet-proof paint film further comprises 15 to 30 parts of filler in parts by weight;
preferably, the filler comprises hydrotalcite;
preferably, the hydrotalcite comprises a combination of magnesium aluminum hydrotalcite, calcium zinc hydrotalcite and magnesium aluminum zinc hydrotalcite;
preferably, the mass ratio of the magnesium aluminum hydrotalcite to the calcium zinc hydrotalcite to the magnesium aluminum zinc hydrotalcite is 1 (0.1-1): 1-4.
6. The ultraviolet-protective paint film according to any one of claims 1 to 5, wherein the raw material of the ultraviolet-protective paint film further comprises 0.5 to 15 parts by weight of a compatibilizer.
7. The uv-protective paint film according to claim 6, wherein the compatibilizer comprises a maleic anhydride-based compatibilizer;
preferably, the maleic anhydride-based compatibilizer comprises at least one of a maleic anhydride grafted ethylene-octene random copolymer, a maleic anhydride grafted ethylene-octene block copolymer, a maleic anhydride grafted polyethylene, or a maleic anhydride grafted styrene.
8. A method for producing an ultraviolet shielding paint film according to any one of claims 1 to 7, comprising the steps of:
mixing polyurethane, polyolefin elastomer, inorganic anti-ultraviolet agent and organic anti-ultraviolet agent, and carrying out tape casting to obtain the ultraviolet-proof paint film.
9. The method of claim 8, wherein the mixed materials further comprise fillers and/or compatibilizers.
10. The method according to claim 8, wherein the temperature of the casting is 160 to 210 ℃.
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