CN112538303A - Anti-aging zinc oxide modified acrylic resin wear-resistant coating and preparation method thereof - Google Patents
Anti-aging zinc oxide modified acrylic resin wear-resistant coating and preparation method thereof Download PDFInfo
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Abstract
The invention relates to the field of acrylic resin, and discloses an anti-aging zinc oxide modified acrylic resin wear-resistant coating, wherein zinc oxide is synthesized by a hydrothermal method, the appearance of the zinc oxide is controlled, sea urchin-shaped nano zinc oxide with larger specific surface area is synthesized, the sea urchin-shaped nano zinc oxide can react with oleic acid to achieve the aim of modifying the nano zinc oxide, the nano zinc oxide is prevented from agglomerating, an acrylic resin monomer and oleic acid modified nano zinc oxide are copolymerized under the initiation of an ammonium persulfate initiator, the nano zinc oxide has strong shielding and scattering effects on ultraviolet light due to large specific surface area, so that the anti-aging and anti-ultraviolet properties of the acrylic resin are improved, meanwhile, the modified zinc oxide has a nano small-size effect, the zinc oxide nano particles can play a role of physical cross-linking points, and can transmit stress to other molecular chains through cross-linking particles, the friction loss is reduced, and the wear resistance of the acrylic resin is improved.
Description
Technical Field
The invention relates to the field of acrylic resin, in particular to an anti-aging zinc oxide modified acrylic resin wear-resistant coating and a preparation method thereof.
Background
The nano zinc oxide is a novel high-function fine inorganic material, has excellent ultraviolet shielding and friction resistance due to the obvious surface and interface effect, small-size effect and quantum size effect, has great value and is widely researched in the fields of rubber, ceramics, coatings and the like, the common zinc oxide has small specific surface area and poor ultraviolet shielding capability, and the nano zinc oxide has high surface energy and is easy to agglomerate, so that the dispersibility in organic matters is poor, and the use of the nano zinc oxide is limited to a great extent due to the reasons, therefore, the specific surface area of the nano zinc oxide is improved, and the surface modification of the nano zinc oxide needs further research.
The acrylic resin is a synthetic resin with wide application, has excellent performances such as good water resistance, chemical resistance, light and color retention, glossiness, hardness, flexibility and the like, and can be widely applied to the fields of electric appliances, machinery, buildings, automobiles, coatings and the like.
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an anti-aging zinc oxide modified acrylic resin wear-resistant coating and a preparation method thereof, which solve the problem of poor zinc oxide dispersibility and solve the problems of poor wear resistance, poor ultraviolet resistance and poor anti-aging performance of acrylic resin.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: the preparation method of the anti-aging zinc oxide modified acrylic resin wear-resistant coating comprises the following steps:
(1) adding deionized water, zinc acetate, sodium hydroxide and diethylenetriamine into a reactor, uniformly stirring, transferring into a reaction kettle, placing into an oven for reaction, cooling, washing, drying and grinding to obtain sea urchin-shaped nano zinc oxide;
(2) adding absolute ethyl alcohol, echinoid nano zinc oxide and oleic acid into a reactor, uniformly stirring, placing the reactor in a water bath kettle to react for 20-30min at 50-80 ℃, transferring the reactor to an ultrasonic instrument to perform ultrasonic dispersion for 10-20min, centrifuging, washing, drying and grinding a product to obtain oleic acid modified echinoid nano zinc oxide;
(3) adding distilled water, methyl methacrylate, butyl acrylate, methacrylic acid, hydroxyethyl methacrylate, sodium dodecyl sulfate, ammonium persulfate and oleic acid modified sea urchin-shaped nano zinc oxide into a reactor, performing ultrasonic dispersion, uniformly stirring in an ice bath, then performing reaction, precipitating, filtering, washing after the reaction is finished, dissolving the product in an acetone solvent, pouring into a mold, and curing to obtain the anti-aging zinc oxide modified acrylic resin wear-resistant coating.
Preferably, the oven device in the step (1) comprises a motor, the motor is fixedly connected with a rotating shaft, the rotating shaft is movably connected with a gear, the gear is movably connected with an inner oven box of the oven, a heater is arranged inside the oven device, rollers are arranged at the bottom of the oven device, and a display and a switch are arranged on the surface of the oven device.
Preferably, the mass ratio of the oleic acid to the sea urchin-shaped nano zinc oxide in the step (2) is 100: 25-30.
Preferably, the reaction temperature in the step (3) is 85-100 ℃, the reaction time is 6-14h, and the reaction environment is nitrogen atmosphere.
Preferably, the mass ratio of the methyl methacrylate, the butyl acrylate, the methacrylic acid, the hydroxyethyl methacrylate, the sodium dodecyl sulfate, the ammonium persulfate and the oleic acid modified sea urchin-like nano zinc oxide in the step (3) is 100:80-90:10-16:45-55:6-10:2-3: 0.6-1.5.
(III) advantageous technical effects
Compared with the prior art, the invention has the following experimental principles and beneficial technical effects:
according to the anti-aging zinc oxide modified acrylic resin wear-resistant coating, the nano flower-shaped zinc oxide is synthesized by a hydrothermal method, the appearance of the zinc oxide is controlled under the action of diethylenetriamine, and the sea urchin-shaped nano zinc oxide with a large specific surface area is synthesized, so that the contact area between the zinc oxide and ultraviolet light and the ultraviolet light shielding capacity are improved, meanwhile, the specific surface area is large, the hydroxyl content on the surface is high, the zinc oxide can be subjected to esterification reaction with carboxyl of oleic acid, oleic acid is grafted to the surface of the nano zinc oxide, the nano zinc oxide is subjected to surface modification through the covalent bond connection mode, the agglomeration of the nano zinc oxide is effectively prevented, and the dispersibility of the nano zinc oxide is improved.
The anti-aging zinc oxide modified acrylic resin wear-resistant coating is prepared by reacting an acrylic resin monomer with oleic acid modified echinoid nano zinc oxide in a nitrogen atmosphere to obtain the anti-aging zinc oxide modified acrylic resin wear-resistant coating, copolymerizing the acrylic resin monomer with alkenyl in the oleic acid modified echinoid nano zinc oxide under the initiation of an ammonium persulfate initiator to ensure that the acrylic resin is polymerized in situ on the surface of the zinc oxide and is connected in a chemical bond mode, so that the structure is more stable, the interface compatibility of the acrylic resin and the nano zinc oxide is improved, the nano zinc oxide can be uniformly dispersed in a polyacrylic resin material, and the nano zinc oxide has strong shielding and scattering effects on ultraviolet light due to larger refractive index and large specific surface area, so that the anti-aging and ultraviolet resistance of the acrylic resin are improved, and meanwhile, the modified zinc oxide has a nano small-size effect, when the zinc oxide nanoparticles are uniformly dispersed in acrylic resin, the zinc oxide nanoparticles can play a role of chemical crosslinking points, and when the acrylic resin coating is subjected to frictional stress, the stress can be transmitted to other molecular chains through the crosslinking particles, so that the frictional loss is effectively reduced, and the wear resistance of the acrylic resin is improved.
Drawings
FIG. 1 is a schematic diagram of an oven apparatus;
fig. 2 is a partially enlarged schematic view of the gear.
1-oven device; 2, a motor; 3-a gear; 4-oven inner box; 5-a heater; 6-a roller; 7-a display; 8-switch.
Detailed description of the preferred embodiments
To achieve the above object, the present invention provides the following embodiments and examples: an anti-aging zinc oxide modified acrylic resin wear-resistant coating is prepared by the following steps:
(1) adding deionized water, zinc acetate, sodium hydroxide and diethylenetriamine into a reactor, uniformly stirring, moving into a reaction kettle, placing into an oven for reaction, wherein an oven device comprises a motor, the motor is fixedly connected with a rotating shaft, the rotating shaft is movably connected with a gear, the gear is movably connected with an oven inner box, a heater is arranged in the oven device, rollers are arranged at the bottom of the oven device, a display and a switch are arranged on the surface of the oven device, and the sea urchin-shaped nano zinc oxide is obtained by washing, drying and grinding after cooling;
(2) adding absolute ethyl alcohol, echinoid nano zinc oxide and oleic acid into a reactor, wherein the mass ratio of the oleic acid to the echinoid nano zinc oxide is 100:25-30, uniformly stirring, placing the mixture into a water bath kettle, reacting for 20-30min at 50-80 ℃, transferring the mixture into an ultrasonic instrument, ultrasonically dispersing for 10-20min, centrifuging, washing, drying and grinding a product to obtain oleic acid modified echinoid nano zinc oxide;
(3) distilled water, methyl methacrylate, butyl acrylate, methacrylic acid, hydroxyethyl methacrylate, sodium dodecyl sulfate, ammonium persulfate and oleic acid modified sea urchin-shaped nano zinc oxide are added into a reactor, wherein the mass ratio of methyl methacrylate, butyl acrylate, methacrylic acid, hydroxyethyl methacrylate, sodium dodecyl sulfate, ammonium persulfate and oleic acid modified sea urchin-shaped nano zinc oxide is 100:80-90:10-16:45-55:6-10:2-3:0.6-1.5, the mixture is stirred uniformly in ice bath after ultrasonic dispersion, reacting for 6-14h in nitrogen atmosphere at 85-100 deg.C, precipitating, filtering, washing, dissolving the product in acetone solvent, pouring the mixture into a mould for curing to obtain the anti-aging zinc oxide modified acrylic resin wear-resistant coating.
Example 1
(1) Adding deionized water, zinc acetate, sodium hydroxide and diethylenetriamine into a reactor, uniformly stirring, moving into a reaction kettle, placing into an oven for reaction, wherein an oven device comprises a motor, the motor is fixedly connected with a rotating shaft, the rotating shaft is movably connected with a gear, the gear is movably connected with an oven inner box, a heater is arranged in the oven device, rollers are arranged at the bottom of the oven device, a display and a switch are arranged on the surface of the oven device, and the sea urchin-shaped nano zinc oxide is obtained by washing, drying and grinding after cooling;
(2) adding absolute ethyl alcohol, echinoid nano zinc oxide and oleic acid into a reactor, wherein the mass ratio of the oleic acid to the echinoid nano zinc oxide is 100:25, uniformly stirring, placing the mixture into a water bath kettle, reacting at 50 ℃ for 20min, transferring the mixture into an ultrasonic instrument, ultrasonically dispersing for 10min, centrifuging, washing, drying and grinding a product to obtain oleic acid modified echinoid nano zinc oxide;
(3) adding distilled water, methyl methacrylate, butyl acrylate, methacrylic acid, hydroxyethyl methacrylate, sodium dodecyl sulfate, ammonium persulfate and oleic acid modified sea urchin-shaped nano zinc oxide into a reactor, wherein the mass ratio of the methyl methacrylate to the butyl acrylate to the methacrylic acid to the hydroxyethyl methacrylate to the sodium dodecyl sulfate to the ammonium persulfate to the oleic acid modified sea urchin-shaped nano zinc oxide is 100:80:10:45:6:2:0.6, stirring uniformly in an ice bath after ultrasonic dispersion, reacting for 6 hours at the reaction temperature of 85 ℃ in a nitrogen atmosphere, precipitating, filtering, washing after the reaction is finished, dissolving the product in an acetone solvent, pouring into a mold, and curing to obtain the anti-aging zinc oxide modified acrylic resin wear-resistant coating.
Example 2
(1) Adding deionized water, zinc acetate, sodium hydroxide and diethylenetriamine into a reactor, uniformly stirring, moving into a reaction kettle, placing into an oven for reaction, wherein an oven device comprises a motor, the motor is fixedly connected with a rotating shaft, the rotating shaft is movably connected with a gear, the gear is movably connected with an oven inner box, a heater is arranged in the oven device, rollers are arranged at the bottom of the oven device, a display and a switch are arranged on the surface of the oven device, and the sea urchin-shaped nano zinc oxide is obtained by washing, drying and grinding after cooling;
(2) adding absolute ethyl alcohol, echinoid nano zinc oxide and oleic acid into a reactor, wherein the mass ratio of the oleic acid to the echinoid nano zinc oxide is 100:27.5, uniformly stirring, placing the mixture into a water bath kettle, reacting for 25min at 60 ℃, transferring the mixture into an ultrasonic instrument, ultrasonically dispersing for 15min, centrifuging, washing, drying and grinding a product to obtain oleic acid modified echinoid nano zinc oxide;
(3) adding distilled water, methyl methacrylate, butyl acrylate, methacrylic acid, hydroxyethyl methacrylate, sodium dodecyl sulfate, ammonium persulfate and oleic acid modified sea urchin-shaped nano zinc oxide into a reactor, wherein the mass ratio of the methyl methacrylate to the butyl acrylate to the methacrylic acid to the hydroxyethyl methacrylate to the sodium dodecyl sulfate to the ammonium persulfate to the oleic acid modified sea urchin-shaped nano zinc oxide is 100:85:13: 8:2.5:1, stirring uniformly in an ice bath after ultrasonic dispersion, reacting for 10 hours at the reaction temperature of 95 ℃ in a nitrogen atmosphere, precipitating, filtering, washing after the reaction is finished, dissolving the product in an acetone solvent, pouring into a mold, and curing to obtain the anti-aging zinc oxide modified acrylic resin wear-resistant coating.
Example 3
(1) Adding deionized water, zinc acetate, sodium hydroxide and diethylenetriamine into a reactor, uniformly stirring, moving into a reaction kettle, placing into an oven for reaction, wherein an oven device comprises a motor, the motor is fixedly connected with a rotating shaft, the rotating shaft is movably connected with a gear, the gear is movably connected with an oven inner box, a heater is arranged in the oven device, rollers are arranged at the bottom of the oven device, a display and a switch are arranged on the surface of the oven device, and the sea urchin-shaped nano zinc oxide is obtained by washing, drying and grinding after cooling;
(2) adding absolute ethyl alcohol, echinoid nano zinc oxide and oleic acid into a reactor, wherein the mass ratio of the oleic acid to the echinoid nano zinc oxide is 100:30, uniformly stirring, placing the mixture into a water bath kettle, reacting at 80 ℃ for 30min, transferring the mixture into an ultrasonic instrument, ultrasonically dispersing for 20min, centrifuging, washing, drying and grinding a product to obtain oleic acid modified echinoid nano zinc oxide;
(3) adding distilled water, methyl methacrylate, butyl acrylate, methacrylic acid, hydroxyethyl methacrylate, sodium dodecyl sulfate, ammonium persulfate and oleic acid modified sea urchin-shaped nano zinc oxide into a reactor, wherein the mass ratio of the methyl methacrylate to the butyl acrylate to the methacrylic acid to the hydroxyethyl methacrylate to the sodium dodecyl sulfate to the ammonium persulfate to the oleic acid modified sea urchin-shaped nano zinc oxide is 100:90:16:55:10:3:1.5, stirring uniformly in an ice bath after ultrasonic dispersion, reacting for 14 hours at the reaction temperature of 100 ℃ in a nitrogen atmosphere, precipitating, filtering, washing after the reaction is finished, dissolving the product in an acetone solvent, pouring into a mold, and curing to obtain the anti-aging zinc oxide modified acrylic resin wear-resistant coating.
Comparative example 1
(1) Adding deionized water, zinc acetate, sodium hydroxide and diethylenetriamine into a reactor, uniformly stirring, moving into a reaction kettle, placing into an oven for reaction, wherein an oven device comprises a motor, the motor is fixedly connected with a rotating shaft, the rotating shaft is movably connected with a gear, the gear is movably connected with an oven inner box, a heater is arranged in the oven device, rollers are arranged at the bottom of the oven device, a display and a switch are arranged on the surface of the oven device, and the sea urchin-shaped nano zinc oxide is obtained by washing, drying and grinding after cooling;
(2) adding absolute ethyl alcohol, echinoid nano zinc oxide and oleic acid into a reactor, wherein the mass ratio of the oleic acid to the echinoid nano zinc oxide is 100:15, uniformly stirring, placing the mixture into a water bath kettle, reacting at 50 ℃ for 20min, transferring the mixture into an ultrasonic instrument, ultrasonically dispersing for 10min, centrifuging, washing, drying and grinding a product to obtain oleic acid modified echinoid nano zinc oxide;
(3) adding distilled water, methyl methacrylate, butyl acrylate, methacrylic acid, hydroxyethyl methacrylate, sodium dodecyl sulfate, ammonium persulfate and oleic acid modified sea urchin-shaped nano zinc oxide into a reactor, wherein the mass ratio of the methyl methacrylate to the butyl acrylate to the methacrylic acid to the hydroxyethyl methacrylate to the sodium dodecyl sulfate to the ammonium persulfate to the oleic acid modified sea urchin-shaped nano zinc oxide is 100:75:7:40:4:1.5:0.1, stirring uniformly in an ice bath after ultrasonic dispersion, reacting for 6 hours in a nitrogen atmosphere at the reaction temperature of 85 ℃, precipitating, filtering and washing after the reaction is finished, dissolving the product in an acetone solvent, pouring into a mold, and curing to obtain the anti-aging zinc oxide modified acrylic resin wear-resistant coating.
Comparative example 2
(1) Adding deionized water, zinc acetate, sodium hydroxide and diethylenetriamine into a reactor, uniformly stirring, moving into a reaction kettle, placing into an oven for reaction, wherein an oven device comprises a motor, the motor is fixedly connected with a rotating shaft, the rotating shaft is movably connected with a gear, the gear is movably connected with an oven inner box, a heater is arranged in the oven device, rollers are arranged at the bottom of the oven device, a display and a switch are arranged on the surface of the oven device, and the sea urchin-shaped nano zinc oxide is obtained by washing, drying and grinding after cooling;
(2) adding absolute ethyl alcohol, echinoid nano zinc oxide and oleic acid into a reactor, wherein the mass ratio of the oleic acid to the echinoid nano zinc oxide is 100:35, uniformly stirring, placing the mixture into a water bath kettle, reacting at 80 ℃ for 30min, transferring the mixture into an ultrasonic instrument, ultrasonically dispersing for 20min, centrifuging, washing, drying and grinding a product to obtain oleic acid modified echinoid nano zinc oxide;
(3) adding distilled water, methyl methacrylate, butyl acrylate, methacrylic acid, hydroxyethyl methacrylate, sodium dodecyl sulfate, ammonium persulfate and oleic acid modified sea urchin-shaped nano zinc oxide into a reactor, wherein the mass ratio of the methyl methacrylate to the butyl acrylate to the methacrylic acid to the hydroxyethyl methacrylate to the sodium dodecyl sulfate to the ammonium persulfate to the oleic acid modified sea urchin-shaped nano zinc oxide is 100:95:18:60:12:3.5:2, stirring uniformly in an ice bath after ultrasonic dispersion, reacting for 14 hours at the reaction temperature of 100 ℃ in a nitrogen atmosphere, precipitating, filtering, washing after the reaction is finished, dissolving the product in an acetone solvent, pouring into a mold, and curing to obtain the anti-aging zinc oxide modified acrylic resin wear-resistant coating.
An AP-UV plastic ultraviolet tester is used for testing the ultraviolet resistance and the ageing resistance of the anti-aging zinc oxide modified acrylic resin wear-resistant coating with the thickness of 2mm, and the test standard is GB/T18950-.
A9600 type multifunctional anti-friction tester is used for testing the friction degree and the wear resistance of the anti-aging zinc oxide modified acrylic resin wear-resistant coating with the thickness of 2mm, and the test standard is GB/T10006-1988.
Claims (5)
1. An anti-aging zinc oxide modified acrylic resin wear-resistant coating is characterized in that: the preparation method of the anti-aging zinc oxide modified acrylic resin wear-resistant coating comprises the following steps:
(1) adding zinc acetate, sodium hydroxide and diethylenetriamine into a deionized water solvent, uniformly stirring, transferring into a reaction kettle, placing in an oven for reaction, cooling, washing, drying and grinding to obtain sea urchin-shaped nano zinc oxide;
(2) adding echinoid nano zinc oxide and oleic acid into an absolute ethyl alcohol solvent, uniformly stirring, placing the mixture into a water bath kettle, reacting for 20-30min at 50-80 ℃, transferring the mixture into an ultrasonic instrument, ultrasonically dispersing for 10-20min, centrifuging, washing, drying and grinding a product to obtain oleic acid modified echinoid nano zinc oxide;
(3) adding methyl methacrylate, butyl acrylate, methacrylic acid, hydroxyethyl methacrylate, sodium dodecyl sulfate, ammonium persulfate and oleic acid modified sea urchin-shaped nano zinc oxide into a distilled water solvent, performing ultrasonic dispersion, uniformly stirring in an ice bath, then performing reaction, precipitating, filtering, washing after the reaction is finished, dissolving the product in an acetone solvent, pouring into a mold, and curing to obtain the anti-aging zinc oxide modified acrylic resin wear-resistant coating.
2. The anti-aging zinc oxide modified acrylic resin wear-resistant coating as claimed in claim 1, wherein: the drying oven device in the step (1) comprises a motor, the motor is fixedly connected with a rotating shaft, the rotating shaft is movably connected with a gear, the gear is movably connected with an inner box of the drying oven, a heater is arranged inside the drying oven device, rollers are arranged at the bottom of the drying oven device, and a display and a switch are arranged on the surface of the drying oven device.
3. The anti-aging zinc oxide modified acrylic resin wear-resistant coating as claimed in claim 1, wherein: the mass ratio of the oleic acid to the sea urchin-shaped nano zinc oxide in the step (2) is 100: 25-30.
4. The anti-aging zinc oxide modified acrylic resin wear-resistant coating as claimed in claim 1, wherein: the reaction temperature in the step (3) is 85-100 ℃, the reaction time is 6-14h, and the reaction environment is nitrogen atmosphere.
5. The anti-aging zinc oxide modified acrylic resin wear-resistant coating as claimed in claim 1, wherein: in the step (3), the mass ratio of methyl methacrylate, butyl acrylate, methacrylic acid, hydroxyethyl methacrylate, sodium dodecyl sulfate, ammonium persulfate and oleic acid modified sea urchin-like nano zinc oxide is 100:80-90:10-16:45-55:6-10:2-3: 0.6-1.5.
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| CN114230848A (en) * | 2021-12-24 | 2022-03-25 | 湖南绿舟新型材料科技有限公司 | Nano zinc oxide grafted polystyrene composite foam board material and preparation method thereof |
| CN114983849A (en) * | 2022-01-10 | 2022-09-02 | 宁波楚月新材料科技有限公司 | Single-component visible light catalysis tooth whitening gel with low hydrogen peroxide concentration as well as preparation and application thereof |
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