CN116478607A - Anti-erosion wear-resistant light-transmitting polymer coating and preparation method thereof - Google Patents
Anti-erosion wear-resistant light-transmitting polymer coating and preparation method thereof Download PDFInfo
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- CN116478607A CN116478607A CN202310411218.5A CN202310411218A CN116478607A CN 116478607 A CN116478607 A CN 116478607A CN 202310411218 A CN202310411218 A CN 202310411218A CN 116478607 A CN116478607 A CN 116478607A
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- 238000000576 coating method Methods 0.000 title claims abstract description 72
- 239000011248 coating agent Substances 0.000 title claims abstract description 71
- 229920000642 polymer Polymers 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title abstract description 15
- 239000011527 polyurethane coating Substances 0.000 claims abstract description 41
- 239000011521 glass Substances 0.000 claims abstract description 32
- 239000004417 polycarbonate Substances 0.000 claims abstract description 27
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims abstract description 19
- 239000004926 polymethyl methacrylate Substances 0.000 claims abstract description 19
- 229920000515 polycarbonate Polymers 0.000 claims abstract description 16
- 239000000758 substrate Substances 0.000 claims abstract description 16
- 238000005299 abrasion Methods 0.000 claims description 22
- 229920001730 Moisture cure polyurethane Polymers 0.000 claims description 20
- 229920002635 polyurethane Polymers 0.000 claims description 20
- 239000004814 polyurethane Substances 0.000 claims description 20
- 230000003628 erosive effect Effects 0.000 claims description 18
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical group ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 15
- 229920005862 polyol Polymers 0.000 claims description 15
- 150000003077 polyols Chemical class 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 5
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 5
- 239000004970 Chain extender Substances 0.000 claims description 4
- 125000005442 diisocyanate group Chemical group 0.000 claims description 4
- 238000004090 dissolution Methods 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 4
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000002834 transmittance Methods 0.000 abstract description 12
- 239000002131 composite material Substances 0.000 description 15
- 229920001692 polycarbonate urethane Polymers 0.000 description 11
- 239000004721 Polyphenylene oxide Substances 0.000 description 8
- 229920000570 polyether Polymers 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 229920001451 polypropylene glycol Polymers 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000004528 spin coating Methods 0.000 description 4
- ZUFUSIMENKJSMG-UHFFFAOYSA-N 1-methyl-3,5-bis(methylsulfanyl)benzene Chemical compound CSC1=CC(C)=CC(SC)=C1 ZUFUSIMENKJSMG-UHFFFAOYSA-N 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 3
- 239000005058 Isophorone diisocyanate Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 2
- 229920000909 polytetrahydrofuran Polymers 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- BJZYYSAMLOBSDY-QMMMGPOBSA-N (2s)-2-butoxybutan-1-ol Chemical compound CCCCO[C@@H](CC)CO BJZYYSAMLOBSDY-QMMMGPOBSA-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
- IBOFVQJTBBUKMU-UHFFFAOYSA-N 4,4'-methylene-bis-(2-chloroaniline) Chemical compound C1=C(Cl)C(N)=CC=C1CC1=CC=C(N)C(Cl)=C1 IBOFVQJTBBUKMU-UHFFFAOYSA-N 0.000 description 1
- 241001474374 Blennius Species 0.000 description 1
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 235000002639 sodium chloride Nutrition 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000009849 vacuum degassing 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
- C09D175/08—Polyurethanes from polyethers
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
- C03C17/38—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal at least one coating being a coating of an organic material
-
- 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
- C09D133/00—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 only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09D133/10—Homopolymers or copolymers of methacrylic acid esters
- C09D133/12—Homopolymers or copolymers of methyl methacrylate
-
- 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
- C09D169/00—Coating compositions based on polycarbonates; Coating compositions based on derivatives of polycarbonates
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2217/00—Coatings on glass
- C03C2217/70—Properties of coatings
- C03C2217/78—Coatings specially designed to be durable, e.g. scratch-resistant
Abstract
The invention provides an anti-erosion wear-resistant light-transmitting polymer coating and a preparation method thereof, comprising a polyurethane coating coated on a glass substrate and a hard anti-erosion coating coated on the polyurethane coating; the hard anti-erosion coating is a polymethyl methacrylate coating or a polycarbonate coating. According to the invention, the hard anti-erosion coating is compounded on the polyurethane coating, namely, the anti-erosion performance of the polyurethane coating is improved through the structure of the multi-layer coating, and the light transmittance of the glass substrate is not affected.
Description
Technical Field
The invention belongs to the field of polymer coatings, and particularly relates to a polymer coating which is excellent in erosion resistance and wear resistance and keeps certain light transmittance and a preparation method thereof.
Background
In aerospace and underwater environments, the service conditions of glass are relatively harsh, and erosion is a major challenge for glass service under special conditions. The reason for the erosion of the glass is that the surface of the glass is subjected to various degrees of chemical or physical reactions when it contacts external media (e.g., water, dust, sand wind, etc.) or other substances, resulting in abrasion and corrosion of the surface. These media or substances can cause chemical attack, electrochemical attack, mechanical impact, etc. to the glass surface, causing abrasion and damage to the surface. The erosion of underwater glass is mainly caused by the impact and abrasion of various solid particles, seaweed, marine organisms, sea salt and other substances existing in water on the surface of the glass. These substances may continuously strike the glass surface under the scouring of the water stream, which causes abrasion and simultaneously results in a decrease in the transmittance of the glass. And the space glass can be impacted by high-speed solid particles in the atmosphere in high-altitude flight, so that the surface is eroded. These solid particles mainly include sand, stones, ice crystals, etc., which cause a large impact energy on the surface of the aerospace vehicle. These solid particles form tiny pits and cracks when striking the glass surface and may be embedded directly into the glass. These problems can lead to increased surface roughness and reduced transparency of the glass, further affecting the view and safety performance of the spacecraft while reducing the safety of the glass.
In order to ensure the safety and stability of glass and maintain the light transmittance, special treatment is usually required to be carried out on the surface of the glass, and the polymer coating has good wear resistance and impact resistance and can protect the surface of a substrate under the action of mechanical impact and abrasion. The polyurethane coating has good weather resistance, chemical corrosion resistance and wear resistance, and meanwhile, the polyurethane coating has excellent elasticity and toughness. However, polyurethane coatings have relatively weak erosion resistance because the polyurethane coatings themselves have relatively low hardness and stiffness and are subject to damage from impact forces.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides an anti-erosion wear-resistant light-transmitting polymer coating and a preparation method thereof, and the invention can improve the anti-erosion performance of the polymer coating and maintain the light transmission of the coated glass.
The invention is realized by the following technical scheme:
an anti-erosion wear-resistant light-transmitting polymer coating comprises a polyurethane coating coated on a glass substrate and a hard anti-erosion coating coated on the polyurethane coating; the hard anti-erosion coating is a polymethyl methacrylate coating or a polycarbonate coating.
Preferably, the polyurethane coating has a thickness of 0.5-1mm and the hard erosion coating has a thickness of 0.1-0.5mm.
Preferably, the elastic modulus of the polyurethane layer is 20-50MPa.
The preparation method of the erosion-resistant wear-resistant light-transmitting polymer coating comprises the following steps:
step 1, preparing a polyurethane coating on a glass substrate
And 2, preparing a hard anti-erosion coating on the polyurethane coating.
Preferably, the step 2 specifically comprises:
1) Polymethyl methacrylate or polycarbonate is dissolved in a solvent to obtain a dissolution solution;
2) Coating the solution on the polyurethane coating;
3) And 3) drying the sample obtained in the step 2) to obtain the anti-erosion wear-resistant light-transmitting polymer coating.
Further, in step 1), the solvent is dichloromethane or tetrahydrofuran.
Further, in the step 3), the drying is specifically performed at 60-80 ℃ for 2-4 hours.
Preferably, the step 1 specifically comprises:
1) Taking polyol, and performing heat treatment under vacuum to remove water;
2) Mixing polyol with water removed at 30-50 ℃ with diisocyanate, reacting for 1-2 hours under the protection of nitrogen, heating to 80-90 ℃ and continuously reacting for 4-5 hours to generate polyurethane prepolymer;
3) Stirring and mixing the polyurethane prepolymer and a chain extender, decompressing and removing bubbles, coating the polyurethane prepolymer on the surface of a glass substrate, and curing the polyurethane prepolymer for 10-12 hours at the temperature of 60-100 ℃ to obtain the polyurethane coating.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the hard anti-erosion coating is compounded on the polyurethane coating, namely, the anti-erosion performance of the polyurethane coating is improved through the structure of the multi-layer coating. Polymethyl methacrylate and polycarbonate in the hard anti-erosion coating have good mechanical property and light transmittance, particularly polymethyl methacrylate has good anti-impact crack property, and the anti-erosion wear-resistant composite coating can be prepared by coating the anti-erosion wear-resistant composite coating on the surface of polyurethane, and the light transmittance of a glass substrate is not affected. The polyurethane coating has toughness, can absorb energy, improves the wear resistance of the coating, and prevents the hard erosion-resistant layer from being cracked and damaged.
Further, the molecular weight distribution of polymethyl methacrylate and polycarbonate is selected to be 3-5 ten thousand and 1-2 ten thousand, so that the polymethyl methacrylate and the polycarbonate can be fully dissolved in a solvent.
Drawings
FIG. 1 is a schematic illustration of an erosion resistant and wear resistant polymer coating.
FIG. 2 is a graph of the results of abrasion and erosion resistant polymer coating after abrasion: (a) a polycarbonate/polyurethane composite layer; (b) a pure polyurethane layer.
Fig. 3 is a graph of abrasion loss of mass with abrasion for an erosion resistant abrasion resistant polymer coating.
FIG. 4 is a graph of light transmittance as a function of wear for an erosion resistant and wear resistant polymer coating.
Detailed Description
For a further understanding of the present invention, the present invention is described below in conjunction with the following examples, which are provided to further illustrate the features and advantages of the present invention and are not intended to limit the claims of the present invention.
As shown in fig. 1, the anti-erosion abrasion-resistant light-transmitting polymer coating according to the present invention comprises a polyurethane coating coated on a glass substrate, and a hard anti-erosion coating coated on the polyurethane coating. The hard anti-erosion coating is a polymethyl methacrylate coating or a polycarbonate coating.
The thickness of the polyurethane coating is 0.5-1mm, and the thickness of the hard anti-erosion coating is 0.1-0.5mm.
The elastic modulus of the polyurethane layer is 20-50MPa.
The preparation method of the erosion-resistant wear-resistant light-transmitting polymer coating comprises the following steps:
step 1, preparing a polyurethane coating on a glass substrate
1) Taking 20-40 parts (parts by weight of all substances are referred to as parts by weight) of polyol, and performing heat treatment under vacuum to remove water in the polyol;
2) Mixing polyol with water removed at 30-50 ℃ with 10-20 parts of diisocyanate, reacting for 1-2 hours under the protection of nitrogen, heating to 80-90 ℃ and continuously reacting for 4-5 hours to generate polyurethane prepolymer;
3) Stirring and mixing the polyurethane prepolymer with 3-5 parts of chain extender, decompressing and removing bubbles, coating the obtained coating on the surface of a glass substrate, and curing for 10-12h at 60-100 ℃ to obtain the polyurethane coating.
Step 2, preparation of anti-erosion polymethyl methacrylate coating or polycarbonate coating
1) Polymethyl methacrylate or polycarbonate is dissolved in dichloromethane or tetrahydrofuran to obtain a dissolution solution;
2) Extracting the solution by a microinjector, adjusting the rotating speed of a spin coater to 3000r/min-4000r/min, and spin-coating polymethyl methacrylate or polycarbonate onto the polyurethane coating by the spin coater.
3) And (3) putting the obtained film-containing sample into a vacuum oven, and drying at 60-80 ℃ for 2-4h.
The diisocyanate is one or two of toluene diisocyanate, diphenylmethane diisocyanate, isophorone diisocyanate and hexamethylene diisocyanate; the polyalcohol is one or two of polytetrahydrofuran ether PTMG1000 and polytetrahydrofuran ether PTMG 2000; the chain extender is one or two of 3,3 '-dichloro-4, 4' -diaminodiphenyl methane, 3, 5-dimethyl thiotoluene diamine, 1, 4-butanediol and ethylene glycol.
Example 1 preparation of polyurethane coating
Taking 20 parts of polyether polyol PTMG1000, placing the polyether polyol PTMG1000 into a container, heating to 100 ℃, vacuumizing for 3 hours to remove water, cooling the polyether polyol PTMG1000 to 50 ℃, uniformly mixing the polyether polyol PTMG1000 with 10 parts of toluene diisocyanate, reacting for 1 hour, heating to 75 ℃, and continuously reacting for 5 hours to generate a polyurethane prepolymer; the polyurethane prepolymer is cooled to 60 ℃, placed in a container, 3 parts of 3, 5-dimethyl thiotoluene diamine is added, the vacuum bubble removal is carried out for 5min, then the polyurethane prepolymer is uniformly coated on the surface of a white glass substrate, the coating thickness is about 1mm, and the polyurethane coating is obtained after curing for 12h at 80 ℃, wherein the elastic modulus is 37MPa.
Example 2 preparation of polyurethane coating
Taking 30 parts of polyoxypropylene glycol 1000, placing the polyoxypropylene glycol 1000 in a container, heating to 100 ℃ and vacuumizing for 3 hours to remove water, then cooling the polyoxypropylene glycol 1000 to 50 ℃, uniformly mixing the polyoxypropylene glycol 1000 with 15 parts of toluene diisocyanate, reacting for 2 hours, heating to 75 ℃ and continuously reacting for 4 hours to generate polyurethane prepolymer; the polyurethane prepolymer is cooled to 60 ℃, placed in a container, 4 parts of 3, 5-dimethyl thiotoluene diamine is added, the vacuum bubble removal is carried out for 5min, then the polyurethane prepolymer is uniformly coated on the surface of a glass substrate, the coating thickness is about 0.5mm, and the polyurethane coating is obtained after curing for 12h at 80 ℃, wherein the elastic modulus is 23MPa.
Example 3 preparation of polyurethane coating
Taking 40 parts of polyether polyol PTMG1000, placing the polyether polyol PTMG1000 into a container, heating to 100 ℃, vacuumizing for 3 hours to remove water, cooling the polyether polyol PTMG1000 to 50 ℃, uniformly mixing the polyether polyol PTMG1000 with 20 parts of isophorone diisocyanate, reacting for 2 hours, heating to 75 ℃, and continuously reacting for 5 hours to generate a polyurethane prepolymer; the polyurethane prepolymer is cooled to 60 ℃ and then placed in a container, 4 parts of 1, 4-butanediol is added, vacuum degassing is carried out for 5min, then the polyurethane prepolymer is uniformly coated on the surface of a glass substrate, the coating thickness is about 1mm, and the polyurethane prepolymer is cured for 12h at 80 ℃ and has the elastic modulus of 42MPa.
Example 4 preparation of a hard polymethylmethacrylate coating
Dissolving polymethyl methacrylate in tetrahydrofuran; extracting the solution by a microinjector, adjusting the rotating speed of a spin coater to 3000r/min, coating the solution onto the polyurethane coating of the embodiment 1 by the spin coater, gradually dripping the solution, testing to control the thickness to be 0.5mm, putting the obtained film-containing sample into a vacuum oven, and drying at 60 ℃ for 2 hours to obtain the polymethyl methacrylate/polyurethane composite layer.
Example 5 preparation of a hard polymethylmethacrylate coating
Dissolving polymethyl methacrylate in tetrahydrofuran; extracting the solution by a microinjector, adjusting the rotating speed of a spin coater to 3500r/min, spin-coating the solution onto the polyurethane coating of the embodiment 1 by the spin coater, gradually dripping the solution, testing to control the thickness to be 0.3mm, putting the obtained film-containing sample into a vacuum oven, and drying at 80 ℃ for 3 hours to obtain the polymethyl methacrylate/polyurethane composite layer.
Example 6 preparation of hard polycarbonate coating
Dissolving polycarbonate in dichloromethane; extracting the solution by a microinjector, adjusting the rotating speed of a spin coater to 3200r/min, spin-coating the solution to the polyurethane coating of the embodiment 1 by the spin coater, gradually dripping the solution, testing to control the thickness to be 0.5mm, putting the obtained film-containing sample into a vacuum oven, and drying at 70 ℃ for 2 hours to obtain the polycarbonate/polyurethane composite layer.
Example 7 preparation of hard polycarbonate coating
Dissolving polycarbonate in dichloromethane; extracting the solution by a microinjector, adjusting the rotating speed of a spin coater to 40000r/min, spin-coating the solution to the polyurethane coating of the embodiment 1 by the spin coater, gradually dripping the solution, testing to control the thickness to be 0.3mm, putting the obtained film-containing sample into a vacuum oven, and drying at 70 ℃ for 4 hours to obtain the polycarbonate/polyurethane composite layer.
Example 8, example 6 abrasion test of polycarbonate/polyurethane composite layer
The polycarbonate/polyurethane composite layer of example 6 was subjected to abrasion test using an abrasion tester at a rotational speed of 200r/min. The sample mass loss measurements were taken every 5 minutes and the results after ten minutes of wear are shown in fig. 2, it being seen that the polycarbonate/polyurethane composite layer (a) is significantly less worn than the pure polyurethane layer (b). Fig. 3 shows the mass loss results, and it can be seen from the results of fig. 3 that the mass loss of the polycarbonate/polyurethane composite layer is significantly smaller than that of the pure polyurethane layer, which indicates that the abrasion resistance of the polycarbonate/polyurethane composite layer is greatly improved.
Example 9, example 6 test of light transmittance of polycarbonate/polyurethane composite layer with abrasion
The polycarbonate/polyurethane composite layer obtained in example 6 was subjected to abrasion test by an abrasion tester at a rotational speed of 100r/min. The transmittance was measured every 5 minutes, and the transmittance of the sample to 550nm visible light was measured with a transmittance meter, and the results are shown in fig. 4. As can be seen from the results of fig. 4, the light transmittance of the polycarbonate/polyurethane composite layer is significantly reduced with the decrease in friction compared to the pure polyurethane coating.
Claims (8)
1. An anti-erosion wear-resistant light-transmitting polymer coating, comprising a polyurethane coating coated on a glass substrate, and a hard anti-erosion coating coated on the polyurethane coating; the hard anti-erosion coating is a polymethyl methacrylate coating or a polycarbonate coating.
2. The erosion resistant and abrasion resistant light transmissive polymer coating of claim 1 wherein the polyurethane coating has a thickness of 0.5-1mm and the hard erosion coating has a thickness of 0.1-0.5mm.
3. The erosion resistant and abrasion resistant light transmitting polymeric coating according to claim 1, wherein the polyurethane layer has an elastic modulus of 20-50MPa.
4. A method of producing an erosion resistant and abrasion resistant light transmitting polymeric coating according to any one of claims 1 to 3, comprising the steps of:
step 1, preparing a polyurethane coating on a glass substrate
And 2, preparing a hard anti-erosion coating on the polyurethane coating.
5. The method for preparing the anti-erosion wear-resistant light-transmitting polymer coating according to claim 4, wherein the step 2 is specifically as follows:
1) Polymethyl methacrylate or polycarbonate is dissolved in a solvent to obtain a dissolution solution;
2) Coating the solution on the polyurethane coating;
3) And 3) drying the sample obtained in the step 2) to obtain the anti-erosion wear-resistant light-transmitting polymer coating.
6. The method for preparing an anti-erosion wear-resistant light-transmitting polymer coating according to claim 5, wherein in the step 1), the solvent is dichloromethane or tetrahydrofuran.
7. The method for producing an erosion resistant and abrasion resistant light transmitting polymer coating according to claim 5, wherein in step 3), the drying is performed in particular at 60-80 ℃ for 2-4 hours.
8. The method for preparing the anti-erosion wear-resistant light-transmitting polymer coating according to claim 4, wherein the step 1 is specifically as follows:
1) Taking polyol, and performing heat treatment under vacuum to remove water;
2) Mixing polyol with water removed at 30-50 ℃ with diisocyanate, reacting for 1-2 hours under the protection of nitrogen, heating to 80-90 ℃ and continuously reacting for 4-5 hours to generate polyurethane prepolymer;
3) Stirring and mixing the polyurethane prepolymer and a chain extender, decompressing and removing bubbles, coating the polyurethane prepolymer on the surface of a glass substrate, and curing the polyurethane prepolymer for 10-12 hours at the temperature of 60-100 ℃ to obtain the polyurethane coating.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310411218.5A CN116478607A (en) | 2023-04-17 | 2023-04-17 | Anti-erosion wear-resistant light-transmitting polymer coating and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310411218.5A CN116478607A (en) | 2023-04-17 | 2023-04-17 | Anti-erosion wear-resistant light-transmitting polymer coating and preparation method thereof |
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| CN202310411218.5A Pending CN116478607A (en) | 2023-04-17 | 2023-04-17 | Anti-erosion wear-resistant light-transmitting polymer coating and preparation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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