CN116515365B - Blue light-proof coating material for mobile phone screen and preparation method thereof - Google Patents
Blue light-proof coating material for mobile phone screen and preparation method thereof Download PDFInfo
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- CN116515365B CN116515365B CN202310491174.1A CN202310491174A CN116515365B CN 116515365 B CN116515365 B CN 116515365B CN 202310491174 A CN202310491174 A CN 202310491174A CN 116515365 B CN116515365 B CN 116515365B
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- polyphenylene sulfide
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- 238000000576 coating method Methods 0.000 title claims abstract description 65
- 239000011248 coating agent Substances 0.000 title claims abstract description 64
- 239000000463 material Substances 0.000 title claims abstract description 62
- 238000002360 preparation method Methods 0.000 title claims abstract description 35
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 66
- 239000004734 Polyphenylene sulfide Substances 0.000 claims abstract description 60
- 229920000069 polyphenylene sulfide Polymers 0.000 claims abstract description 60
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 34
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- 230000002265 prevention Effects 0.000 claims abstract description 31
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- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims abstract description 16
- FFUAGWLWBBFQJT-UHFFFAOYSA-N hexamethyldisilazane Chemical compound C[Si](C)(C)N[Si](C)(C)C FFUAGWLWBBFQJT-UHFFFAOYSA-N 0.000 claims abstract description 16
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- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 claims description 9
- DEQJNIVTRAWAMD-UHFFFAOYSA-N 1,1,2,4,4,4-hexafluorobutyl prop-2-enoate Chemical compound FC(F)(F)CC(F)C(F)(F)OC(=O)C=C DEQJNIVTRAWAMD-UHFFFAOYSA-N 0.000 claims description 8
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- 239000011737 fluorine Substances 0.000 abstract description 4
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- AMTWCFIAVKBGOD-UHFFFAOYSA-N dioxosilane;methoxy-dimethyl-trimethylsilyloxysilane Chemical compound O=[Si]=O.CO[Si](C)(C)O[Si](C)(C)C AMTWCFIAVKBGOD-UHFFFAOYSA-N 0.000 description 1
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- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- NKZQKINFDLZVRY-UHFFFAOYSA-N n-butylbutan-1-amine;toluene Chemical compound CC1=CC=CC=C1.CCCCNCCCC NKZQKINFDLZVRY-UHFFFAOYSA-N 0.000 description 1
- 239000002116 nanohorn Substances 0.000 description 1
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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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
-
- 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
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- 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
- C09D7/65—Additives macromolecular
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to the technical field of paint, and discloses a blue light-proof coating material for a mobile phone screen and a preparation method thereof, wherein the coating material comprises the following raw materials: epoxy resin, blue light prevention auxiliary agent, modified polyphenylene sulfide, organic silicon-graphene compound, maleic anhydride curing agent, polyurethane leveling agent and dimethyl silicone oil defoaming agent, wherein the modified polyphenylene sulfide is prepared by combining polyphenylene sulfide with fluorine-containing acrylic ester and silicon-containing acrylic ester, the toughness and the anti-fouling capability of a coating material are enhanced, and the graphene oxide is chemically modified by utilizing isocyanate groups in 3-isocyanatopropyl triethoxysilane, so that the modified polyphenylene sulfide can be further combined with hexamethyldisilazane to prepare the organic silicon-graphene compound, the wear resistance of the coating material is enhanced, and meanwhile, the blue light prevention auxiliary agent is added into the coating material to well block high-energy blue light, thereby playing a role in protecting eyes.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a blue light prevention coating material for a mobile phone screen and a preparation method thereof.
Background
In recent years, the updating of mobile phones has witnessed the transition of the era, along with the improvement of the software performance, the performance of mobile phones is also rapidly developed, so far, mobile phones have become carriers for bearing most of people's clothes and food and communication, are closely related to the work and life of people, play a role in generating life, and the mobile phone screen is used as an interface for directly contacting the vision and touch of people, so that the use frequency of the mobile phone screen is more and more frequent.
The mobile phone brings convenience to people, meanwhile, the mobile phone also has great harm, high-energy blue light on the screen of the mobile phone can penetrate through crystalline lens to reach retina, the retina can generate free radicals when being irradiated by blue light, the free radicals can lead to the attenuation of retinal pigment epithelial cells, the attenuation of the epithelial cells can lead to the lack of nutrients of photosensitive cells, thereby causing vision injury, especially in teenager period, the incomplete development of eyeballs is more easily damaged, and the mobile phone is watched by the adult for a long time, so that diseases such as xerophthalmia, conjunctivitis and the like are easily obtained, serious blindness even can be caused, the influence is caused on the subsequent work and life, and the damage is irreversible. Meanwhile, the surface of the traditional mobile phone screen is easy to scratch and scratch, the scraped mobile phone screen is used, the damage to eyes is larger, in addition, sweat, greasy dirt, fingerprints and the like are easy to remain on the mobile phone screen when the mobile phone is used for a long time, and especially, many people like to eat and play the mobile phone at the same time, and the mobile phone screen for hiding dirt possibly threatens the health of people.
The Chinese patent with publication number of CN 113105776A discloses an anti-fingerprint antibacterial glass, which has wide application prospect in the field of touch screens, and the product is characterized in that a composition with an antibacterial effect is directly coated on the surface of a glass raw sheet, and a special silver-carrying carbon nano horn ethanol dispersion liquid is added to inhibit and kill bacteria, so that the antibacterial effect is given to the glass, and the glass has the anti-fingerprint characteristic. However, the glass has no blue light prevention performance, is slightly deficient in eye protection, cannot block damage caused by high-energy blue light after long-time use, and is easy to cause vision injury.
Based on the coating material, the invention provides a blue light-proof, antifouling and wear-resistant coating material for a mobile phone screen.
Disclosure of Invention
The invention aims to provide a blue light prevention coating material for a mobile phone screen and a preparation method thereof, which solve the following technical problems:
because the practicality of cell-phone, people are longer and longer to its live time, see the cell-phone for a long time and cause with eye fatigue easily, cause vision impairment, cell-phone screen is many with external contact, and some fingerprints, greasy dirt, water stain etc. of adhesion easily also are easily worn and torn by the fish tail simultaneously and cause economic loss. Based on the above, the present invention addresses the following technical problems: (1) The problem of damage to the eyeball caused by high-energy blue light when the mobile phone is seen for a long time. (2) The mobile phone screen is easy to be polluted, and is adhered with fingerprints, greasy dirt, water stains and the like. (3) The surface of the mobile phone screen is not wear-resistant and is easy to scratch in the use process.
The aim of the invention can be achieved by the following technical scheme:
the blue light-proof coating material for the mobile phone screen is characterized by comprising the following raw materials in parts by weight: 90-150 parts of epoxy resin, 3-7 parts of blue light prevention auxiliary agent, 2-6 parts of modified polyphenylene sulfide, 3-8 parts of organic silicon-graphene compound, 40-70 parts of maleic anhydride curing agent, 20-60 parts of polyurethane leveling agent and 10-30 parts of dimethyl silicone oil defoaming agent; the modified polyphenylene sulfide is prepared by introducing alkenyl into the polyphenylene sulfide and polymerizing the alkenyl with fluorine-containing acrylic ester and unsaturated organic silicon; the organosilicon-graphene composite is prepared by carrying out surface modification on graphene oxide by using a silane coupling agent and then connecting with organosilicon nitrogen.
Further, the blue light prevention auxiliary agent is a blue light absorber BA24.
Further, the preparation method of the modified polyphenylene sulfide comprises the following steps:
(1) Dissolving polyphenylene sulfide and glycidyl methacrylate in tetrahydrofuran solution, introducing nitrogen, heating in a water bath at 50-65 ℃ for 2-6h to obtain a product, and then distilling under reduced pressure to remove low-boiling substances to obtain a polyphenylene sulfide intermediate;
(2) And adding the polyphenylene sulfide intermediate, hexafluorobutyl acrylate, allyl tri (trimethylsiloxy) silane and azodiisobutyronitrile into a dichloromethane solution, heating, stirring, reacting, and vacuum drying to obtain the modified polyphenylene sulfide.
Further, in the step (1), the mass ratio of the polyphenylene sulfide to the glycidyl methacrylate to the tetrahydrofuran is 8-10:2-7:80-150; the mass ratio of the polyphenylene sulfide intermediate, hexafluorobutyl acrylate, allyl tri (trimethylsiloxy) silane, azodiisobutyronitrile and methylene dichloride in the step (2) is 3-5:1-3:0.5-2:0.01-1:200-550.
Further, in the step (2), the temperature of the reaction is 50-80 ℃ and the time is 6-8h.
According to the technical scheme, the polyphenylene sulfide and the glycidyl methacrylate are mixed, the mercapto group in the polyphenylene sulfide and the epoxy group in the glycidyl methacrylate are utilized to carry out click reaction to obtain the polyphenylene sulfide intermediate containing alkenyl, the unsaturated alkenyl functional group of the polyphenylene sulfide intermediate is used as an active initiation site, the azobisisobutyronitrile is used as an initiator to initiate in-situ polymerization of hexafluorobutyl acrylate and allyl tri (trimethylsiloxy) silane in a polyphenylene sulfide molecular chain, and the fluorine-containing group and the silicon-containing group are successfully grafted in the polyphenylene sulfide molecular chain to obtain the modified polyphenylene sulfide.
Further, the preparation method of the organic silicon-graphene composite comprises the following steps:
s1: adding deionized water into graphene oxide, and uniformly mixing to obtain graphene oxide mixed solution; adding 3-isocyanatopropyl triethoxysilane into absolute ethyl alcohol, stirring to dissolve the 3-isocyanatopropyl triethoxysilane, adding the obtained product into graphene oxide mixed solution, performing ultrasonic treatment, stirring for 0.5-1h, adjusting the pH to 4-5 with hydrochloric acid, heating in a water bath at 45-60 ℃ for 1-3h, continuously heating to 70-90 ℃, keeping the temperature at 20-35mi n, cooling to room temperature, centrifuging, and washing to obtain a graphene oxide intermediate;
s2: mixing graphene oxide intermediate, hexamethyldisilazane and tetrahydrofuran, raising the temperature for reaction, cooling to room temperature, filtering, washing and drying to obtain the organosilicon-graphene compound.
Further, in step S1, the ultrasonic time is 0.5-1h.
Further, in step S1, the mass ratio of graphene oxide, deionized water, 3-isocyanatopropyl triethoxysilane, and absolute ethanol is 2-6:200-600:2-10:20-80 parts; in the step S2, the mass ratio of the graphene oxide intermediate to the hexamethyldisilazane to the tetrahydrofuran is 1-2:2-5:100-240.
Further, in the step S2, the temperature of the reaction is 60-80 ℃ and the time is 3-6h.
According to the technical scheme, the 3-isocyanatopropyl triethoxysilane is utilized to chemically modify graphene oxide, isocyanate groups are grafted to the surface of the graphene oxide, the graphene oxide can further react with secondary amino groups in a hexamethyldisilazane structure, and hexamethyldisilazane is combined with isocyanate functionalized graphene oxide to prepare the organic silicon-graphene composite.
A preparation method of a blue light-proof coating material for a mobile phone screen comprises the following steps:
firstly, pouring epoxy resin, blue light prevention auxiliary agent, modified polyphenylene sulfide, organic silicon-graphene compound, polyurethane leveling agent and simethicone into a mixer, setting the rotating speed of a screw to be 1000-1500r/min, and mixing at high speed for 30-60min to obtain premix;
and secondly, adding the maleic anhydride curing agent in parts by weight into a mixer, mixing with the premix, and continuously stirring for 20-40min to obtain the blue light prevention coating material.
The invention has the beneficial effects that:
(1) According to the invention, the sulfhydryl in the polyphenylene sulfide and the epoxy group in the glycidyl methacrylate are utilized to carry out click reaction and then are covalently combined with allyl tri (trimethylsiloxy) silane and hexafluorobutyl acrylate to obtain the modified polyphenylene sulfide, and the siloxane in the allyl tri (trimethylsiloxy) silane is used as a functional group, so that the stability, strength and toughness of the coating material can be improved, the wear resistance can be increased to a certain extent, and in addition, the polarity of the siloxane is small, the siloxane has high hydrophobic property, so that the finally prepared coating material has good anti-fouling capability; the fluorine-containing group in the hexafluorobutyl acrylate has extremely low surface energy and excellent hydrophobic and oil-repellent properties, and can also increase the anti-fouling effect of the coating material under the synergistic effect of organosilicon. The modified polyphenylene sulfide structure contains active hydroxyl groups, and can participate in the curing process of the epoxy resin, so that the modified polyphenylene sulfide structure has good interface performance with the epoxy resin, can effectively prevent the precipitation of the anti-fouling agent, and achieves the purpose of long-term anti-fouling.
(2) According to the invention, the organosilicon-graphene composite is prepared, so that the prepared coating material has wear-resistant and scratch-resistant properties. The graphene oxide has a unique conjugated structure, has strong stability and wear resistance, can weaken agglomeration phenomenon caused by pi-pi stacking effect after covalent modification, and Si-N in the organic silicon-graphene composite can better increase the barrier property of the graphene oxide.
Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an infrared spectrum test chart of modified polyphenylene sulfide in example 1 of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
A blue light-proof coating material for a mobile phone screen and a preparation method thereof comprise the following raw materials in parts by weight: 90 parts of epoxy resin, 3 parts of blue light prevention auxiliary agent, 2 parts of modified polyphenylene sulfide, 3 parts of organic silicon-graphene compound, 40 parts of maleic anhydride curing agent, 20 parts of polyurethane leveling agent and 10 parts of dimethyl silicone oil;
the preparation method of the blue light-proof coating material for the mobile phone screen comprises the following preparation steps:
firstly, pouring epoxy resin, blue light prevention auxiliary agent, modified polyphenylene sulfide, organic silicon-graphene compound, polyurethane leveling agent and dimethyl silicone oil defoaming agent in parts by weight into a mixer, setting the rotating speed of a screw to 1000 r/min, and mixing at a high speed for 30 min to obtain a premix;
and secondly, adding the maleic anhydride curing agent in parts by weight into a mixer, mixing with the premix, and continuously stirring for 20 min to obtain the blue light prevention coating material.
The preparation method of the modified polyphenylene sulfide comprises the following steps:
(1) 8g of polyphenylene sulfide and 2g of glycidyl methacrylate are taken and dissolved in 100ml of tetrahydrofuran solution, the mixture is heated for 2 hours in a water bath at 50 ℃ after nitrogen is introduced, and the low-boiling-point substances are removed by reduced pressure distillation after the product is obtained, so that the polyphenylene sulfide intermediate is obtained.
(2) 3g of a polyphenylene sulfide intermediate, 1g of hexafluorobutyl acrylate, 0.5g of allyl tris (trimethylsiloxy) silane, and 0.01g of azobisisobutyronitrile were added to a solution of 200ml of methylene chloride, and after stirring at 50℃for 6 hours, the mixture was dried in vacuo to obtain a modified polyphenylene sulfide. Characterization of modified polyphenylene sulfide by IR spectrum test, the test results are shown in FIG. 1, and 2972cm can be seen from FIG. 1 -1 The absorption peak of methyl is 1011cm -1 The absorption peak of benzene ring group is 1711cm -1 Is-c=o absorption peak; 1233. 1138cm -1 Where is-CF 2 and-CF 3 The absorption peak of C-F of 996cm -1 The absorption peak of the C-S bond.
The preparation method of the organic silicon-graphene composite comprises the following steps:
s1, adding 400m l deionized water into 4g of graphene oxide, and uniformly mixing to obtain a graphene oxide mixed solution; adding 2g of 3-isocyanatopropyl triethoxysilane into 25m L absolute ethyl alcohol, stirring to dissolve the 3-isocyanatopropyl triethoxysilane, adding the obtained product into graphene oxide mixed solution, carrying out ultrasonic treatment for 0.5h, stirring for 0.5h, adjusting the pH to 4 by using 2.5 mol/L hydrochloric acid, heating in a water bath at 45 ℃ for 1h, continuously heating to 70 ℃, keeping the temperature at 20 min, cooling to room temperature, centrifuging and washing to obtain the graphene oxide intermediate. Measuring the content of isocyanate groups in the graphene oxide intermediate by a di-n-butylamine titration method for characterization, weighing 1g of the graphene oxide intermediate sample, placing the sample in a conical flask, adding a toluene solution, dispersing uniformly, transferring 10m L of di-n-butylamine-toluene solution into the conical flask by a pipette, shaking uniformly, mixing, adding 50m L isopropanol and 0.3mL of bromophenol blue indicator after the reaction is finished, titrating by using a hydrochloric acid standard solution with the concentration of 0.1 mol/L until the color of the solution changes, and simultaneously performing a blank test, wherein the mass fraction of the isocyanate groups is calculated according to the following formula:
wherein V is the hydrochloric acid volume consumed by titration of the blank sample (m l); v (V) 0 Hydrochloric acid volume consumed for titration of the sample (m l); c is the concentration (mol/L) of the hydrochloric acid standard solution; m is the sample amount (g); the isocyanate group content of the obtained sample was calculated to be 17.15%.
S2: taking 1.5g of graphene oxide intermediate, 4g of hexamethyldisilazane and 200ml of tetrahydrofuran, heating in a water bath at 60 ℃ for 3 hours, cooling to room temperature, filtering, washing and drying to obtain the organosilicon-graphene compound. The content of isocyanate groups in the organosilicon-graphene composite was determined by di-n-butylamine titration, and the specific method steps are the same as in step S1, and the content of isocyanate groups in the organosilicon-graphene composite sample was calculated to be 6.73% because the isocyanate groups in the graphene oxide intermediate structure reacted with secondary amino groups in the hexamethyldisilazane structure.
Example 2
A blue light-proof coating material for a mobile phone screen and a preparation method thereof comprise the following raw materials in parts by weight: 100 parts of epoxy resin, 5 parts of blue light prevention auxiliary agent, 4 parts of modified polyphenylene sulfide, 6 parts of organic silicon-graphene compound, 55 parts of maleic anhydride curing agent, 45 parts of polyurethane leveling agent and 20 parts of dimethyl silicone oil defoaming agent;
the preparation method of the blue light-proof coating material for the mobile phone screen comprises the following preparation steps:
firstly, pouring epoxy resin, blue light prevention auxiliary agent, modified polyphenylene sulfide, organic silicon-graphene compound, polyurethane leveling agent and dimethyl silicone oil defoaming agent in parts by weight into a mixer, setting the rotating speed of a screw to 1200 r/min, and mixing at a high speed to 40min to obtain a premix;
and secondly, adding the maleic anhydride curing agent in parts by weight into a mixer, mixing with the premix, and continuously stirring for 30 min to obtain the blue light prevention coating material.
The preparation method of the organosilicon-graphene composite and the modified polyphenylene sulfide is the same as that of the example 1.
Example 3
A blue light-proof coating material for a mobile phone screen and a preparation method thereof comprise the following raw materials in parts by weight: 150 parts of epoxy resin, 7 parts of blue light prevention auxiliary agent, 6 parts of modified polyphenylene sulfide, 8 parts of organic silicon-graphene compound, 70 parts of maleic anhydride curing agent, 60 parts of polyurethane leveling agent and 30 parts of dimethyl silicone oil defoaming agent;
the preparation method of the blue light-proof coating material for the mobile phone screen comprises the following preparation steps:
firstly, pouring epoxy resin, blue light prevention auxiliary agent, modified polyphenylene sulfide, organic silicon-graphene compound, polyurethane leveling agent and dimethyl silicone oil defoaming agent in parts by weight into a mixer, setting the rotating speed of a screw to 1500r/min, and mixing at a high speed for 60min to obtain a premix;
and secondly, adding the maleic anhydride curing agent in parts by weight into a mixer, mixing with the premix, and continuously stirring for 40min to obtain the blue light prevention coating material.
The preparation method of the organosilicon-graphene composite and the modified polyphenylene sulfide is the same as that of the example 1.
Comparative example 1
A blue light-proof coating material for a mobile phone screen and a preparation method thereof comprise the following raw materials in parts by weight: 90 parts of epoxy resin, 3 parts of blue light prevention auxiliary agent, 2 parts of modified polyphenylene sulfide, 40 parts of maleic anhydride curing agent, 20 parts of polyurethane leveling agent and 10 parts of dimethyl silicone oil defoaming agent;
the preparation method of the blue light-proof coating material for the mobile phone screen comprises the following preparation steps:
firstly, pouring epoxy resin, blue light prevention auxiliary agent, modified polyphenylene sulfide, organic silicon-graphene compound, polyurethane leveling agent and dimethyl silicone oil defoaming agent in parts by weight into a mixer, setting the rotating speed of a screw to 1000 r/min, and mixing at a high speed for 30 min to obtain a premix;
and secondly, adding the maleic anhydride curing agent in parts by weight into a mixer, mixing with the premix, and continuously stirring for 20 min to obtain the blue light prevention coating material.
Wherein the preparation method of the modified polyphenylene sulfide is the same as that of example 1.
Comparative example 2
A blue light-proof coating material for a mobile phone screen and a preparation method thereof comprise the following raw materials in parts by weight: 100 parts of epoxy resin, 5 parts of blue light prevention auxiliary agent, 6 parts of organic silicon-graphene compound, 55 parts of maleic anhydride curing agent, 45 parts of polyurethane leveling agent and 20 parts of dimethyl silicone oil defoaming agent;
the preparation method of the blue light-proof coating material for the mobile phone screen comprises the following preparation steps:
firstly, pouring epoxy resin, blue light prevention auxiliary agent, modified polyphenylene sulfide, organic silicon-graphene compound, polyurethane leveling agent and dimethyl silicone oil defoaming agent in parts by weight into a mixer, setting the rotating speed of a screw to 1200 r/min, and mixing at a high speed to 40min to obtain a premix;
and secondly, adding the maleic anhydride curing agent in parts by weight into a mixer, mixing with the premix, and continuously stirring for 30 min to obtain the blue light prevention coating material.
Wherein the preparation method of the organosilicon-graphene composite is the same as in example 1.
Comparative example 3
A blue light-proof coating material for a mobile phone screen and a preparation method thereof comprise the following raw materials in parts by weight: 150 parts of epoxy resin, 7 parts of blue light prevention auxiliary agent, 70 parts of maleic anhydride curing agent, 60 parts of polyurethane leveling agent and 30 parts of dimethyl silicone oil defoaming agent;
the preparation method of the blue light-proof coating material for the mobile phone screen comprises the following preparation steps:
firstly, pouring epoxy resin, blue light prevention auxiliary agent, modified polyphenylene sulfide, organic silicon-graphene compound, polyurethane leveling agent and dimethyl silicone oil defoaming agent in parts by weight into a mixer, setting the rotating speed of a screw to 1500r/min, and mixing at a high speed for 60min to obtain a premix;
and secondly, adding the maleic anhydride curing agent in parts by weight into a mixer, mixing with the premix, and continuously stirring for 40min to obtain the blue light prevention coating material.
Performance detection
(1) The blue light-proof coating materials for mobile phone screens prepared in the examples 1 to 3 and comparative examples 1 to 3 of the present invention were coated on the surface of glass for mobile phone screens to a thickness of about 9 μm, and the glass was irradiated under a high-pressure mercury lamp, and after curing, cut into 2mm×2mm small pieces, see section 1 of coated glass of GB/T18915.1-2013: the sunshine control coated glass is repeatedly wiped on the surface of a mobile phone screen by #0000 steel wool, the friction distance is 6-8 cm, the test is carried out according to the number of times of grinding marks on the surface of the glass when the load is 500g, and the reference test results are shown in the following table:
as can be seen from the above table data, the mobile phone screen coating materials prepared in examples 1 to 3 have higher scratch and wear resistance under the friction of the steel wire balls, the mobile phone screen coating material prepared in comparative example 1 is not added with the organosilicon-graphene compound, and modified polyphenylene sulfide is added, so that the mobile phone screen coating material has wear resistance to a certain extent, but compared with the examples, the mobile phone screen coating material prepared in comparative example 1 has general wear resistance. In the mobile phone screen coating material prepared in comparative example 2, the organosilicon-graphene composite is not added with the modified polyphenylene sulfide, so that the wear resistance of the surface of the mobile phone screen coating material is greatly improved, and compared with the surface of the mobile phone screen coating material prepared in the example, the mobile phone screen coating material prepared in comparative example 3 has less difference and excellent wear resistance, and in the mobile phone screen coating material prepared in comparative example 3, the organosilicon-graphene composite is not added nor the modified polyphenylene sulfide is added, so that the wear resistance and scratch resistance are poor, and scratches are easily generated.
(2) The blue light-proof coating materials for mobile phone screens prepared in the invention examples 1-3 and comparative examples 1-3 were coated on the surface of the mobile phone screen, the coating thickness was about 9 μm, the mobile phone screen was irradiated under a high-pressure mercury lamp, the mobile phone screen was taken off the film after curing, cut into 2mm×2mm small pieces, the water contact angle and the vegetable oil contact angle of the hydrophobic coating were tested by using a contact angle measuring instrument with reference to GB/T24368-2009 glass surface hydrophobic contamination detection contact angle measurement method, each sample was tested in parallel for 3 times, the average value was taken, and the test results are shown in the following table:
from the data in the table, the water contact angle measured by the mobile phone screen coating materials prepared in the examples 1-3 is greater than 130 degrees, the vegetable oil contact angle is greater than 140 degrees, and the mobile phone screen coating materials have good hydrophobic and oleophobic properties and excellent anti-fouling capability. The mobile phone screen coating material prepared in comparative example 1 is not added with an organosilicon-graphene compound, modified polyphenylene sulfide is added, the hydrophobic and oleophobic effects are not different from those of the coating material prepared in the example, the mobile phone screen coating material prepared in comparative example 2 also has excellent anti-fouling capability, the measured water contact angle and the measured vegetable oil contact angle are not large, the anti-fouling capability is general, and the mobile phone screen coating material prepared in comparative example 3 has poor hydrophobic and oleophobic effects and almost no anti-fouling capability because neither the organosilicon-graphene compound nor the modified polyphenylene sulfide is added.
The foregoing is merely illustrative and explanatory of the principles of the invention, as various modifications and additions may be made to the specific embodiments described, or similar thereto, by those skilled in the art, without departing from the principles of the invention or beyond the scope of the appended claims.
Claims (8)
1. The blue light-proof coating material for the mobile phone screen is characterized by comprising the following raw materials in parts by weight: 90-150 parts of epoxy resin, 3-7 parts of blue light prevention auxiliary agent, 2-6 parts of modified polyphenylene sulfide, 3-8 parts of organic silicon-graphene compound, 40-70 parts of maleic anhydride curing agent, 20-60 parts of polyurethane leveling agent and 10-30 parts of dimethyl silicone oil defoaming agent;
the preparation method of the modified polyphenylene sulfide comprises the following steps:
(1) Dissolving polyphenylene sulfide and glycidyl methacrylate in tetrahydrofuran solution, introducing nitrogen, heating in a water bath at 50-65 ℃ for 2-6h to obtain a product, and then distilling under reduced pressure to remove low-boiling substances to obtain a polyphenylene sulfide intermediate;
(2) Adding a polyphenylene sulfide intermediate, hexafluorobutyl acrylate, allyl tri (trimethylsiloxy) silane and azodiisobutyronitrile into a dichloromethane solution, heating, stirring, reacting, and vacuum drying to obtain modified polyphenylene sulfide;
the preparation method of the organic silicon-graphene composite comprises the following steps:
s1: adding deionized water into graphene oxide, and uniformly mixing to obtain graphene oxide mixed solution; adding 3-isocyanatopropyl triethoxysilane into absolute ethyl alcohol, stirring to dissolve the 3-isocyanatopropyl triethoxysilane, adding the obtained product into graphene oxide mixed solution, performing ultrasonic treatment, stirring for 0.5-1h, adjusting the pH to 4-5 with hydrochloric acid, heating in 45-60 ℃ water bath for 1-3h, continuously heating to 70-90 ℃, keeping for 20-35min, cooling to room temperature, centrifuging, and washing to obtain a graphene oxide intermediate;
s2: mixing graphene oxide intermediate, hexamethyldisilazane and tetrahydrofuran, raising the temperature for reaction, cooling to room temperature, filtering, washing and drying to obtain the organosilicon-graphene compound.
2. The blue light preventing coating material for a mobile phone screen according to claim 1, wherein the blue light preventing auxiliary agent is a blue light absorber BA24.
3. The blue light prevention coating material for the mobile phone screen according to claim 1, wherein in the step (1), the mass ratio of the polyphenylene sulfide to the glycidyl methacrylate to the tetrahydrofuran is 8-10:2-7:80-150, and in the step (2), the mass ratio of the polyphenylene sulfide intermediate to the hexafluorobutyl acrylate to the allyl tris (trimethylsiloxy) silane to the azobisisobutyronitrile to the dichloromethane is 3-5:1-3:0.5-2:0.01-1:200-550.
4. The blue light preventing coating material for mobile phone screens according to claim 1, wherein in the step (2), the reaction temperature is 50-80 ℃ and the reaction time is 6-8h.
5. The blue light preventing coating material for a mobile phone screen according to claim 1, wherein in the step S1, the ultrasonic time is 0.5-1h.
6. The blue light preventing coating material for a mobile phone screen according to claim 1, wherein in step S1, the mass ratio of graphene oxide, deionized water, 3-isocyanatopropyl triethoxysilane, and absolute ethanol is 2-6:200-600:2-10:20-80 parts; in the step S2, the mass ratio of the graphene oxide intermediate to the hexamethyldisilazane to the tetrahydrofuran is 1-2:2-5:100-240.
7. The blue light preventing coating material for mobile phone screens according to claim 1, wherein in step S2, the reaction temperature is 60-80 ℃ and the reaction time is 3-6h.
8. A method for preparing the blue light-proof coating material for a mobile phone screen according to claim 1, wherein the preparation method comprises the following steps:
firstly, pouring epoxy resin, blue light prevention auxiliary agent, modified polyphenylene sulfide, organic silicon-graphene compound, polyurethane leveling agent and dimethyl silicone oil defoaming agent in parts by weight into a mixer, setting the rotating speed of a screw to be 1000-1500r/min, and mixing at a high speed for 30-60min to obtain premix;
and secondly, adding the maleic anhydride curing agent in parts by weight into a mixer, mixing with the premix, and continuously stirring for 20-40min to obtain the blue light prevention coating material.
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