CN111196868A - Water-based resin, preparation method thereof and water-based paint - Google Patents
Water-based resin, preparation method thereof and water-based paint Download PDFInfo
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- CN111196868A CN111196868A CN201910992457.8A CN201910992457A CN111196868A CN 111196868 A CN111196868 A CN 111196868A CN 201910992457 A CN201910992457 A CN 201910992457A CN 111196868 A CN111196868 A CN 111196868A
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- 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
- C08F292/00—Macromolecular compounds obtained by polymerising monomers on to inorganic materials
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- 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
- C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
- C09D151/10—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to inorganic materials
Abstract
The invention provides a water-based resin, a preparation method thereof and a water-based paint, and belongs to the field of paints. For the aqueous resin, substances required for synthesizing it include: 50-300 parts of first deionized water, 10-60 parts of alcohol solvent, 10-60 parts of first monomer, 0.1-8 parts of emulsifier, 0.05-5 parts of first initiator, 30-120 parts of second monomer, 0.05-5 parts of second initiator, 5-50 parts of wear-resistant filler and 50-200 parts of second deionized water. The water-based resin has stable wear resistance, is green and environment-friendly, and is beneficial to preparing water-based paint with the same advantages.
Description
The present application claims priority from chinese patent application No. 201811368002.0 entitled "an aqueous wear-resistant resin and a method for preparing the same, aqueous wear-resistant coating" filed on 16/11/2018, the entire contents of which are incorporated herein by reference.
Technical Field
The invention relates to the field of coatings, and particularly relates to a water-based resin, a preparation method thereof and a water-based coating.
Background
For electronic products such as computers, mobile phones, household appliances and the like, the surface of the shell of the electronic product can be discolored and abraded after being touched for a long time, and in order to solve the problem, a wear-resistant coating is coated on the surface of the shell of the electronic product at present.
In the prior art, solvent-based paint is mostly adopted when the wear-resistant coating is prepared, although good hardness can be achieved, the environment-friendly performance is poor, and water-based plastic ink taking water as a carrier is adopted, wax powder, wax slurry and the like are taken as wear-resistant fillers, so that the wear resistance is poor in the using process of the coating.
It is thus seen that there is a need to provide a new type of coating.
Disclosure of Invention
In view of the above, the present invention provides an aqueous resin, a preparation method thereof, and an aqueous coating material, which can solve the above technical problems. Specifically, the method comprises the following technical scheme:
in one aspect, there is provided an aqueous resin, wherein substances required for synthesizing the aqueous resin include: 50-300 parts of first deionized water, 10-60 parts of alcohol solvent, 10-60 parts of first monomer, 0.1-8 parts of emulsifier, 0.05-5 parts of first initiator, 30-120 parts of second monomer, 0.05-5 parts of second initiator, 5-50 parts of wear-resistant filler and 50-200 parts of second deionized water.
In some possible implementations, the materials required for synthesizing the aqueous resin further include: 0.01-10 parts of pH regulator.
In some possible implementations, the first monomer is selected from at least one of methyl methacrylate, n-butyl methacrylate, isobornyl methacrylate, ethyl methacrylate, isooctyl methacrylate, butyl acrylate;
the second monomer is at least one of methyl methacrylate, n-butyl methacrylate, styrene, vinyl acetate and ethyl methacrylate.
In some possible implementations, the first initiator and the second initiator are each selected from one of ammonium persulfate, sodium persulfate, and potassium persulfate.
In some possible implementations, the emulsifier is selected from at least one of octylphenol polyoxyethylene ether, nonylphenol polyoxyethylene ether, sodium dodecylbenzene sulfonate, sodium dodecylsulfonate, and sodium lauryl sulfonate.
In another aspect, there is provided a method for preparing an aqueous resin, the method comprising:
adding 50-300 parts by weight of first deionized water, 10-60 parts by weight of alcohol solvent, 10-60 parts by weight of first monomer, 0.1-8 parts by weight of emulsifier and 0.05-5 parts by weight of first initiator into a reactor, uniformly stirring, and preserving heat to reaction temperature;
adding 30-120 parts by weight of a second monomer, 0.05-5 parts by weight of a second initiator, 5-50 parts by weight of wear-resistant filler and 50-200 parts by weight of second deionized water into the reactor, carrying out heat preservation reaction, and filtering to obtain the water-based resin;
the wear-resistant filler is nano aluminum oxide treated by one of vinyl trimethoxy silane, vinyl triethoxy silane or gamma-methacryloxypropyl trimethoxy silane.
In one possible implementation, the preparation method further includes: after the incubation reaction, 0.01 to 10 parts by weight of a pH adjusting agent is added to the reactor.
In some possible implementations, the second monomer, the second initiator, the abrasion-resistant filler, and the second deionized water are all added dropwise to the reactor.
In some possible implementations, the dropping rate of the second monomer is 5 to 50 parts by weight per hour;
the dropping speed of the wear-resistant filler is 1-20 parts by weight/hour;
the dropping speed of the second initiator is 0.01-3 parts by weight/hour;
the acceleration speed of the second deionized water is 10-60 parts by weight/hour.
In still another aspect, there is provided a water-based paint including any one of the water-based resins described above.
In some possible implementations, the aqueous coating includes the following components in parts by weight:
40-150 parts of the water-based resin, 0.01-3 parts of a wetting agent, 0.01-3 parts of a defoaming agent, 0.1-10 parts of a film-forming assistant and 0.01-5 parts of a thickening agent.
The technical scheme provided by the embodiment of the invention has the beneficial effects that at least:
according to the preparation method of the water-based resin provided by the embodiment of the invention, the resin synthesis is carried out in an emulsion polymerization mode under the action of the emulsifier, and the deionized water and the alcohol solvent are used as dispersion media instead of organic solvents, so that the water-based resin can be prepared, and the preparation and application processes are more environment-friendly. Wherein the first monomer and the second monomer are polymerized under the action of the first initiator and the second initiator to endow the waterborne resin with adhesion on a base material.
The wear-resistant filler is nano alumina treated by one of vinyl trimethoxy silane, vinyl triethoxy silane or gamma-methacryloxypropyl trimethoxy silane, and a chemical grafting mode is adopted, so that the alumina and silicon hydroxyl groups are combined to form a stable chemical bond, and meanwhile, double bonds in the wear-resistant filler can participate in resin synthesis reaction, namely are connected with a main chain of resin, so that the alumina is stably combined with the resin, and the wear resistance is improved while the wear resistance is more stable and durable.
Detailed Description
In order to make the technical solutions and advantages of the present invention more clear, embodiments of the present invention will be described in further detail below.
In one aspect, embodiments of the present invention provide an aqueous resin, wherein substances required for synthesizing the aqueous resin include: 50-300 parts of first deionized water, 10-60 parts of alcohol solvent, 10-60 parts of first monomer, 0.1-8 parts of emulsifier, 0.05-5 parts of first initiator, 30-120 parts of second monomer, 0.05-5 parts of second initiator, 5-50 parts of wear-resistant filler and 50-200 parts of second deionized water.
The aqueous resin provided by the embodiment of the invention adopts the substances as reaction raw materials, can be synthesized by adopting an emulsion polymerization mode under the action of an emulsifier during preparation, and utilizes deionized water and an alcohol solvent to replace an organic solvent as a dispersion medium, so that the preparation and application processes of the resin are more environment-friendly. Wherein the first monomer and the second monomer are polymerized under the action of the first initiator and the second initiator to endow the waterborne resin with adhesion on a base material.
For example, the wear-resistant filler may be nano alumina, and further, the wear-resistant filler may be nano alumina treated with a silane compound, so as to achieve an effect of significantly improving wear resistance and form the aqueous wear-resistant resin with good wear resistance.
The silane compound may be, for example, vinyltrimethoxysilane, vinyltriethoxysilane or gamma-methacryloxypropyltrimethoxysilane.
By way of example, the wear-resistant filler is nano-alumina treated with vinyltrimethoxysilane, vinyltriethoxysilane or gamma-methacryloxypropyltrimethoxysilane.
The wear-resistant filler is nano alumina treated by one of vinyl trimethoxy silane, vinyl triethoxy silane or gamma-methacryloxypropyl trimethoxy silane, and a chemical grafting mode is adopted, so that the alumina and silicon hydroxyl groups are combined to form a stable chemical bond, and meanwhile, double bonds in the wear-resistant filler can participate in resin synthesis reaction, namely are connected with a main chain of resin, so that the alumina is stably combined with the resin, and the wear resistance is improved while the wear resistance is more stable and durable.
Further, substances required for synthesizing the resin also include: 0.01 to 10 parts by weight, for example, 0.3 to 1.5 parts by weight of a pH adjusting agent to adjust the pH of the aqueous resin to a desired range.
In one possible implementation, the substances required for the synthesis of the aqueous resin may include: 100-200 parts of first deionized water, 20-40 parts of alcohol solvent, 20-40 parts of first monomer, 1-3 parts of emulsifier, 0.1 part of first initiator, 60-80 parts of second monomer, 0.2-0.4 part of second initiator, 15-20 parts of wear-resistant filler and 100-120 parts of second deionized water.
In the embodiment of the present invention, the PH adjuster used may be at least one selected from the group consisting of sodium hydrogen phosphate, sodium hydrogen carbonate, and sodium acetate.
The following will exemplify each of the above-mentioned raw materials with respect to the kind thereof to which they can be applied:
the first monomer is at least one selected from methyl methacrylate, n-butyl methacrylate, isobornyl methacrylate, ethyl methacrylate, isooctyl methacrylate and butyl acrylate;
the second monomer is at least one of methyl methacrylate, n-butyl methacrylate, styrene, vinyl acetate and ethyl methacrylate.
The first monomer and the second monomer may be the same or different. Illustratively, different first and second monomers may be employed.
Based on the above definition of the first monomer and the second monomer, the first initiator and the second initiator are each selected from one of ammonium persulfate, sodium persulfate, and potassium persulfate. Wherein, the first initiator and the second initiator can be the same or different.
In the embodiment of the invention, the emulsifier is selected from at least one of octylphenol polyoxyethylene ether, nonylphenol polyoxyethylene ether, sodium dodecyl benzene sulfonate, sodium dodecyl sulfonate and sodium lauryl sulfonate, so as to achieve a good emulsifying effect. The alcohol solvent may be at least one of ethanol, isopropanol, and n-butanol.
In another aspect, an embodiment of the present invention provides a method for preparing an aqueous resin, where the method includes: step a, adding 50-300 parts by weight of first deionized water, 10-60 parts by weight of alcohol solvent, 10-60 parts by weight of first monomer, 0.1-8 parts by weight of emulsifier and 0.05-5 parts by weight of first initiator into a reactor, uniformly stirring, and keeping the temperature to the reaction temperature.
And b, performing heat preservation reaction on 30-120 parts by weight of a second monomer, 0.05-5 parts by weight of a second initiator, 5-50 parts by weight of wear-resistant filler and 50-200 parts by weight of second deionized water, and filtering to obtain the water-based resin.
The preparation method of the water-based resin provided by the embodiment of the invention realizes the resin synthesis by adopting an emulsion polymerization mode under the action of the emulsifier, and the deionized water and the alcohol solvent are used as a dispersion medium instead of an organic solvent, so that the water-based resin can be prepared, and the preparation and application processes are more environment-friendly. Wherein the first monomer and the second monomer are polymerized under the action of the first initiator and the second initiator to endow the waterborne resin with adhesion on a base material.
For example, the wear-resistant filler may be nano alumina, and further, the wear-resistant filler may be nano alumina treated with a silane compound, so as to achieve an effect of significantly improving wear resistance.
The silane compound may be, for example, vinyltrimethoxysilane, vinyltriethoxysilane or gamma-methacryloxypropyltrimethoxysilane.
By way of example, the wear-resistant filler is nano-alumina treated with vinyltrimethoxysilane, vinyltriethoxysilane or gamma-methacryloxypropyltrimethoxysilane.
The wear-resistant filler is nano alumina treated by one of vinyl trimethoxy silane, vinyl triethoxy silane or gamma-methacryloxypropyl trimethoxy silane, and a chemical grafting mode is adopted, so that the alumina and silicon hydroxyl groups are combined to form a stable chemical bond, and meanwhile, double bonds in the wear-resistant filler can participate in resin synthesis reaction, namely are connected with a main chain of resin, so that the alumina is stably combined with the resin, and the wear resistance is improved while the wear resistance is more stable and durable.
In one possible implementation, the preparation method of the water-based resin can comprise the following steps:
step a, adding 100-200 parts by weight of first deionized water, 20-40 parts by weight of alcohol solvent, 20-40 parts by weight of first monomer, 1-3 parts by weight of emulsifier and 0.1 part by weight of first initiator into a reactor, uniformly stirring, and keeping the temperature to the reaction temperature.
And b, adding 60-80 parts by weight of a second monomer, 0.2-0.4 part by weight of a second initiator, 15-20 parts by weight of wear-resistant filler and 100-120 parts by weight of second deionized water into the reactor, carrying out heat preservation reaction, and filtering to obtain the water-based resin.
It is understood that vinyltrimethoxysilane, vinyltriethoxysilane or gamma-methacryloxypropyltrimethoxysilane are coupling agents having double bonds, both the silicon hydroxyl groups and the double bonds present in the vinyltrimethoxysilane, vinyltriethoxysilane or gamma-methacryloxypropyltrimethoxysilane of the abrasion resistant filler.
For the wear-resistant filler, in order to ensure that the nano alumina and the coupling agent are stably combined, the processing mode can be as follows:
adding a coupling agent with double bonds to the ethanol solution: namely, one of vinyltrimethoxysilane, vinyltriethoxysilane or gamma-methacryloxypropyltrimethoxysilane and nano-alumina are uniformly mixed, put into an oven with set temperature for baking for set time, taken out and cooled to room temperature, and the wear-resistant filler can be obtained.
Wherein, the ethanol solution can adopt 90-95% ethanol water solution, when the ethanol solution is 100 parts by weight, the double bond coupling agent is 15-25 parts by weight, such as 20 parts by weight, and the nano alumina is 3-5 parts by weight, such as 4 parts by weight. The set temperature inside the oven may be 50 to 70 ℃, for example, 60 ℃, and the set time for baking may be 5 to 10 hours, for example, 8 hours.
In the above process for preparing the aqueous resin, the reactor used may be a reaction kettle with a stirring device and a heating device. In step a, after the above raw materials are added into the reaction kettle, the stirring device may be first turned on, and after the reaction system is stirred to be uniform (for example, to be uniform milky white), the heating device may be turned on to control the reaction temperature to 60 ℃ to 80 ℃, for example, 60 ℃, 65 ℃, 70 ℃, 75 ℃, 80 ℃, etc. In step b, the reaction may be carried out with an incubation time of 4 to 8 hours, for example, 4 hours, 5 hours, 6 hours, etc., and the filtration in step b may be carried out using a 500-mesh filter cloth.
In the preparation process, the first monomer, the first initiator and the emulsifier are uniformly mixed through the step a to realize the pre-emulsification process of emulsion polymerization, so that a stable micelle is formed, and the stable and controllable formation of the aqueous resin is facilitated when the step b is subsequently carried out.
Further, the preparation method also comprises the following steps: after the temperature keeping reaction, 0.01 to 10 parts by weight, for example, 0.3 to 1.5 parts by weight of a pH adjusting agent is added to the reactor to adjust the pH of the aqueous resin to a desired range.
In the embodiment of the present invention, the PH adjuster used is at least one selected from the group consisting of sodium hydrogen phosphate, sodium hydrogen carbonate, and sodium acetate.
The following will exemplify each of the above-mentioned raw materials with respect to the kind thereof to which they can be applied:
the first monomer is at least one selected from methyl methacrylate, n-butyl methacrylate, isobornyl methacrylate, ethyl methacrylate, isooctyl methacrylate and butyl acrylate;
the second monomer is at least one of methyl methacrylate, n-butyl methacrylate, styrene, vinyl acetate and ethyl methacrylate.
The first monomer and the second monomer may be the same or different. Illustratively, different first and second monomers may be employed.
Based on the above definition of the first monomer and the second monomer, the first initiator and the second initiator are each selected from one of ammonium persulfate, sodium persulfate, and potassium persulfate. Wherein, the first initiator and the second initiator can be the same or different.
In the embodiment of the invention, the emulsifier is selected from at least one of octylphenol polyoxyethylene ether, nonylphenol polyoxyethylene ether, sodium dodecyl benzene sulfonate, sodium dodecyl sulfonate and sodium lauryl sulfonate, so as to achieve a good emulsifying effect. The alcohol solvent may be at least one of ethanol, isopropanol, and n-butanol.
In the process of synthesizing the aqueous resin, the weight parts of the used reaction raw materials include, but are not limited to, the following, and meanwhile, the weight ratio of each reaction raw material may be selected from any combination of the following specific examples:
by way of example, the first deionized water may be 50 parts by weight, 100 parts by weight, 150 parts by weight, 200 parts by weight, 250 parts by weight, 300 parts by weight, and the like.
The alcohol solvent may be 10 parts by weight, 20 parts by weight, 30 parts by weight, 40 parts by weight, 50 parts by weight, 60 parts by weight, or the like.
The first monomer may be 10 parts by weight, 20 parts by weight, 30 parts by weight, 40 parts by weight, 50 parts by weight, 60 parts by weight, or the like.
The emulsifier can be 0.1 part by weight, 0.5 part by weight, 1 part by weight, 2 parts by weight, 3 parts by weight, 4 parts by weight, 5 parts by weight, 6 parts by weight, 7 parts by weight, 8 parts by weight, and the like.
The first initiator may be 0.05 parts by weight, 0.5 parts by weight, 1 part by weight, 2 parts by weight, 3 parts by weight, 4 parts by weight, 5 parts by weight, or the like.
The second monomer may be 30 parts by weight, 40 parts by weight, 50 parts by weight, 60 parts by weight, 70 parts by weight, 80 parts by weight, 90 parts by weight, 100 parts by weight, 110 parts by weight, 120 parts by weight, or the like.
The second initiator may be 0.05 parts by weight, 0.5 parts by weight, 1 part by weight, 2 parts by weight, 3 parts by weight, 4 parts by weight, 5 parts by weight, or the like.
The wear resistant filler may be 5 parts by weight, 10 parts by weight, 20 parts by weight, 30 parts by weight, 40 parts by weight, 50 parts by weight, or the like.
The second deionized water may be 50 parts by weight, 70 parts by weight, 100 parts by weight, 120 parts by weight, 150 parts by weight, 200 parts by weight, etc.
The pH adjuster may be 0.01 parts by weight, 0.05 parts by weight, 1 part by weight, 2 parts by weight, 3 parts by weight, 4 parts by weight, 5 parts by weight, 6 parts by weight, 7 parts by weight, 8 parts by weight, 9 parts by weight, 10 parts by weight, or the like.
In order to make the emulsion polymerization reaction stable, controllable and thorough, in the embodiment of the invention, the second monomer, the second initiator, the wear-resistant filler and the second deionized water are all added into the reactor in a dropwise manner, and the continuous addition can be realized in the dropwise manner, so as to optimize the effect.
In one possible implementation, the dropping rate of the second monomer is 5 to 50 parts by weight/hour, such as 25 to 30 parts by weight/hour, further exemplified by 5 parts by weight/hour, 10 parts by weight/hour, 15 parts by weight/hour, 20 parts by weight/hour, 25 parts by weight/hour, 30 parts by weight/hour, 35 parts by weight/hour, 40 parts by weight/hour, 45 parts by weight/hour, 50 parts by weight/hour, and the like.
The dropping speed of the wear-resistant filler is 1 to 20 parts by weight/hour, for example, 5 to 10 parts by weight/hour, further exemplified by 5 parts by weight/hour, 7 parts by weight/hour, 9 parts by weight/hour, 10 parts by weight/hour, 11 parts by weight/hour, 12 parts by weight/hour, 13 parts by weight/hour, 14 parts by weight/hour, 15 parts by weight/hour, 16 parts by weight/hour, 17 parts by weight/hour, 18 parts by weight/hour, 19 parts by weight/hour, 20 parts by weight/hour and the like.
The dropping rate of the second initiator is 0.01 to 3 parts by weight/hour, for example, 0.05 to 0.15 parts by weight/hour, further exemplified by 0.05 parts by weight/hour, 0.15 parts by weight/hour, 0.5 parts by weight/hour, 1 part by weight/hour, 2 parts by weight/hour, 3 parts by weight/hour and the like.
The acceleration rate of the second deionized water is 10 to 60 parts by weight/hour, for example, 30 to 40 parts by weight/hour, further exemplified by 10 parts by weight/hour, 20 parts by weight/hour, 25 parts by weight/hour, 30 parts by weight/hour, 35 parts by weight/hour, 40 parts by weight/hour, and the like.
In still another aspect, the embodiment of the present invention further provides a water-based paint, which includes the above-mentioned water-based resin.
As an example, the water-based paint comprises the following components in parts by weight:
40-150 parts of water-based resin, 0.01-3 parts of wetting agent, 0.01-3 parts of defoaming agent, 0.1-10 parts of film-forming assistant and 0.01-5 parts of thickening agent.
As an example, the water-based paint comprises the following components in parts by weight: 90-100 parts of water-based resin, 0.1-0.3 part of wetting agent, 0.2-0.5 part of defoaming agent, 3-5 parts of film-forming assistant and 0.1-0.5 part of thickening agent.
The water-based paint provided by the embodiment of the invention comprises the following components in parts by weight, but is not limited to the following components, and meanwhile, the weight ratio of the components can be selected from any combination of the following specific examples:
by way of example, the aqueous resin may be 40 parts by weight, 50 parts by weight, 60 parts by weight, 70 parts by weight, 80 parts by weight, 90 parts by weight, 100 parts by weight, 110 parts by weight, 120 parts by weight, 130 parts by weight, 140 parts by weight, 150 parts by weight, or the like.
The wetting agent may be 0.01 parts by weight, 0.05 parts by weight, 0.1 parts by weight, 0.5 parts by weight, 1 part by weight, 1.5 parts by weight, 2 parts by weight, 3 parts by weight, or the like.
The defoaming agent may be 0.01 parts by weight, 0.05 parts by weight, 0.1 parts by weight, 0.5 parts by weight, 1 part by weight, 1.5 parts by weight, 2 parts by weight, 3 parts by weight, or the like.
The film-forming aid may be 0.1 part by weight, 0.5 part by weight, 1 part by weight, 2 parts by weight, 3 parts by weight, 4 parts by weight, 5 parts by weight, 6 parts by weight, 7 parts by weight, 8 parts by weight, 9 parts by weight, 10 parts by weight, or the like.
The thickener may be 0.01 parts by weight, 0.05 parts by weight, 0.1 parts by weight, 0.5 parts by weight, 1 part by weight, 1.5 parts by weight, 2 parts by weight, 3 parts by weight, 4 parts by weight, 5 parts by weight, or the like.
The water-based paint can form a coating on the surface of a substrate, such as the surface of a shell of an electronic product, ABS, PC, PMMA, PVC plastic substrate and the like, and the formed coating has at least the following advantages: strong adhesive force, strong wear resistance durability, environmental protection and the like.
Illustratively, the wetting agent may be selected from
Wet KL 245、
Wet 240、
Wet270、
Twin 4100, BYK-346 and BYK-349.
The defoaming agent is selected from BYK-024, BYK-028, BYK-093, BYK-028, BYK-093, BYK-024, BYK-028, BYK,
Airex 902W、
Foamex 822、
At least one of Foamex 825.
The thickener may be at least one selected from the group consisting of PUR40, PUR44, PUR62 and PUR85 manufactured and sold by the company mink.
The film forming assistant may be at least one selected from ethanol, ethylene glycol butyl ether, diethylene glycol ethyl ether, diethylene glycol butyl ether and dipropylene glycol butyl ether.
In the embodiment of the invention, the preparation method and the application process of the water-based paint can be seen as follows:
(1) preparation of the water-based paint: according to the weight ratio of the components, the wetting agent, the defoaming agent, the film forming aid and the thickening agent are added into the water-based resin, and the mixture is uniformly stirred to obtain the water-based paint.
(2) The construction method comprises the following steps: the aqueous coating can be applied to the surface of the sample by spraying, brushing, or the like.
(3) The curing mode is as follows: the sample piece sprayed with the water-based paint is placed in an oven (baking temperature can be 50-70 ℃, such as 60 ℃) and baked for a period of time, such as 60 minutes, and then the curing is completed. The surface of the sample piece is coated.
(4) And (3) performance detection: the adhesion, surface pencil hardness and wear resistance of the coating were tested on the flat coating surface.
Wherein, hardness and wear resistance test:
adhesion testing can be found in ASTM D3359; the surface pencil hardness test can refer to ASTM D3363, using Mitsubishi Uni pencil, nib load 500 g;
the abrasion resistance test is as follows: on a flat sample, 500g/cm in the vertical direction was applied using a 0000# steel wool application2The force of the test area is the round-trip friction, the stroke distance is 6cm, the speed is 60 round trips/min, one round trip is counted as 1 cycle, after 500, 1000 and 1500 cycles of test, the surface is cleaned, and whether scratches exist on the surface is observed.
The present invention will be further described below by way of specific examples, and reference to "parts" in the following examples refers to parts by weight.
Example 1
Preparing a water-based resin:
160 parts of deionized water, 30 parts of isopropanol, 1.5 parts of sodium dodecyl benzene sulfonate, 40 parts of n-butyl methacrylate and 0.1 part of potassium persulfate are added into a reaction kettle, a stirring device is started, a heating device is started after the stirring is carried out to be uniform in milky color, the kettle temperature is controlled to be 80 ℃, 65 parts of vinyl acetate is continuously added, the adding speed is 25 parts per hour, 20 parts of nano aluminum oxide treated by vinyl trimethoxy silane are added at the adding speed of 10 parts per hour, 0.4 part of sodium persulfate is added at the adding speed of 0.1 part per hour, 100 parts of deionized water is added at the adding speed of 30 parts per hour, after all materials are added, the temperature is kept for 5 hours, 1.2 parts of disodium hydrogen phosphate is added, the mixture is cooled to the room temperature, and the mixture is filtered by 500-mesh filter cloth.
Preparing a water-based paint by using the water-based resin, and forming a coating layer on the sample by using the water-based paint:
(1) preparation of the water-based paint: 0.2 part of BYK-346, 0.3 part of BYK-024, 4 parts of diethylene glycol monobutyl ether and 0.1 part of PUR44 are added into 98 parts of synthetic resin and stirred uniformly to obtain the water-based paint.
(2) The construction method comprises the following steps: spraying the coating on an ABS sample piece;
(3) the curing mode is as follows: placing the sprayed sample piece in a 60 ℃ oven to be baked for 60 minutes and then taking out;
(4) and (3) performance detection: and after the solidified sample piece is cooled to room temperature, testing the adhesive force, the surface hardness and the wear-resisting effect of the surface coating.
Example 2
Preparing a water-based resin:
adding 100 parts of deionized water, 20 parts of ethanol, 3 parts of nonylphenol polyoxyethylene ether, 20 parts of n-butyl methacrylate and 0.1 part of potassium persulfate into a reaction kettle, starting a stirring device, stirring to be uniform milky white, then starting a heating device, controlling the kettle temperature at 70 ℃, continuously adding 60 parts of styrene at the rate of 30 parts per hour, adding 20 parts of nano-alumina treated by vinyl triethoxysilane at the rate of 8 parts per hour, adding 0.3 part of sodium persulfate at the rate of 0.05 parts per hour, adding 120 parts of deionized water at the rate of 35 parts per hour, keeping the temperature for 5 hours after all materials are added, then adding 1.5 parts of sodium bicarbonate, cooling to room temperature, and filtering by using 500-mesh filter cloth to obtain the water-based resin.
Preparing a water-based paint by using the water-based resin, and forming a coating layer on the sample by using the water-based paint:
(1) preparation of the water-based paint: 0.1 part of BYK-349,0.1 part of BYK346, 0.2 part of BYK-028, 4 parts of diethylene glycol ethyl ether and 0.1 part of PUR40 are added into 100 parts of synthetic resin, and the mixture is uniformly stirred to obtain the water-based paint.
(2) The construction method comprises the following steps: spraying the coating on a PC sample;
(3) the curing mode is as follows: placing the sprayed sample piece in a 70 ℃ oven to be baked for 50 minutes and then taking out;
(4) and (3) performance detection: and after the solidified sample piece is cooled to room temperature, testing the adhesive force, the surface hardness and the wear-resisting effect of the surface coating.
Example 3
Preparing a water-based resin:
adding 200 parts of deionized water, 40 parts of n-butanol, 1.5 parts of octylphenol polyoxyethylene ether, 30 parts of methyl methacrylate and 0.1 part of ammonium sulfate into a reaction kettle, starting a stirring device, stirring to be uniform and milky, then starting a heating device, controlling the temperature of the kettle at 60 ℃, continuously adding 80 parts of n-butyl methacrylate at the rate of 25 parts per hour, adding 15 parts of nano aluminum oxide treated by vinyl triethoxysilane at the rate of 10 parts per hour, adding 0.2 part of sodium persulfate at the rate of 0.15 part per hour, adding 105 parts of deionized water at the rate of 35 parts per hour, keeping the temperature for 5 hours after all materials are added, then adding 0.9 part of sodium bicarbonate, cooling to room temperature, and filtering by using 500-mesh filter cloth to obtain the water-based resin.
Preparing a water-based paint by using the water-based resin, and forming a coating layer on the sample by using the water-based paint:
(1) preparation of the water-based paint: adding 0.3 part of synthetic resin to 90 parts of synthetic resin
Wet KL 245, 0.5 part of BYK-093, 3 parts of ethylene glycol butyl ether and 0.1 part of PUR62, and uniformly stirring to obtain the water-based paint.
(2) The construction method comprises the following steps: spraying the coating on a PVC sample;
(3) the curing mode is as follows: placing the sprayed sample piece in a 50 ℃ oven to bake for 80 minutes and then taking out;
(4) and (3) performance detection: and after the solidified sample piece is cooled to room temperature, testing the adhesive force, the surface hardness and the wear-resisting effect of the surface coating.
Example 4
Preparing a water-based resin:
adding 100 parts of deionized water, 40 parts of ethanol, 1 part of sodium lauryl sulfate, 30 parts of sodium dodecyl benzene sulfonate and 0.1 part of sodium persulfate into a reaction kettle, starting a stirring device, stirring to be uniform milky white, then starting a heating device, controlling the kettle temperature at 80 ℃, continuously adding 70 parts of butyl acrylate at a rate of 25 parts per hour, adding 15 parts of nano aluminum oxide treated by vinyl triethoxysilane at a rate of 5 parts per hour, adding 0.2 part of sodium persulfate at a rate of 0.15 parts per hour, adding 110 parts of deionized water at a rate of 40 parts per hour, keeping the temperature for 5 hours after all materials are added, then adding 0.3 part of sodium bicarbonate, cooling to room temperature, and filtering by using 500-mesh filter cloth to obtain the water-based resin.
Preparing a water-based paint by using the water-based resin, and forming a coating layer on the sample by using the water-based paint:
(1) preparation of the water-based paint: to 95 parts of a synthetic resin, 0.1 part
Wet 240, 0.3 part
Foamex 825, 3 parts of dipropylene glycol butyl ether, 2 parts of diethylene glycol ethyl ether and 0.5 part of PUR40, and stirring uniformly to obtain the water-based paint.
(2) The construction method comprises the following steps: spraying the coating on an ABS sample piece;
(3) the curing mode is as follows: placing the sprayed sample piece in a 60 ℃ oven to be baked for 40 minutes and then taking out;
(4) and (3) performance detection: and after the solidified sample piece is cooled to room temperature, testing the adhesive force, the surface hardness and the wear-resisting effect of the surface coating.
Example 5
Preparing a water-based resin:
adding 150 parts of deionized water, 40 parts of ethanol, 1 part of sodium lauryl sulfate, 30 parts of methyl methacrylate and 0.1 part of ammonium sulfate into a reaction kettle, starting a stirring device, stirring until the mixture is uniform and milky, then starting a heating device, controlling the temperature of the kettle at 80 ℃, continuously adding 80 parts of methyl methacrylate at the rate of 28 parts per hour, adding 17 parts of gamma-methacryloxypropyltrimethoxysilane-treated nano-alumina at the rate of 5 parts per hour, 0.2 part of ammonium sulfate at the rate of 0.15 part per hour, adding 110 parts of deionized water at the rate of 40 parts per hour, keeping the temperature for 5 hours after all the materials are added, then adding 0.8 part of sodium acetate, cooling to room temperature, and filtering with 500-mesh filter cloth to obtain the water-based resin.
Preparing a water-based paint by using the water-based resin, and forming a coating layer on the sample by using the water-based paint:
(1) preparation of the water-based paint: adding 0.2 part of synthetic resin to 90 parts of synthetic resin
Wet 270, 0.3 part
Airex 902W, 3 parts of ethanol and 0.5 part of PUR44, and uniformly stirring to obtain the water-based paint.
(2) The construction method comprises the following steps: spraying the coating on a PMMA sample;
(3) the curing mode is as follows: placing the sprayed sample piece in a 70 ℃ oven to be baked for 30 minutes and then taking out;
(4) and (3) performance detection: and after the solidified sample piece is cooled to room temperature, testing the adhesive force, the surface hardness and the wear-resisting effect of the surface coating.
Example 6
Preparing a water-based resin:
adding 150 parts of deionized water, 30 parts of ethanol, 1 part of sodium dodecyl sulfate, 35 parts of methyl methacrylate and 0.1 part of sodium persulfate into a reaction kettle, starting a stirring device, stirring to be uniform milky white, then starting a heating device, controlling the temperature of the kettle to be 80 ℃, continuously adding 80 parts of isooctyl methacrylate at the rate of 25 parts per hour, adding 17 parts of gamma-methacryloxypropyl trimethoxysilane treated nano-alumina at the rate of 5 parts per hour, 0.2 part of ammonium sulfate at the rate of 0.15 part per hour, adding 110 parts of deionized water at the rate of 40 parts per hour, preserving heat for 5 hours after all materials are added, then adding 0.8 part of sodium acetate, cooling to room temperature, and filtering by using 500-mesh filter cloth to obtain the water-based resin.
Preparing a water-based paint by using the water-based resin, and forming a coating layer on the sample by using the water-based paint:
(1) preparation of the water-based paint: to 98 parts of a synthetic resin, 0.1 part
Twin 4100, 0.3 parts
Foamex 822, 5 parts of diethylene glycol monobutyl ether and 0.1 part of PUR85, and stirring uniformly to obtain the water-based paint.
(2) The construction method comprises the following steps: spraying the coating on a PC sample;
(3) the curing mode is as follows: placing the sprayed sample piece in an oven at 80 ℃ for baking for 30 minutes and then taking out;
(4) and (3) performance detection: and after the solidified sample piece is cooled to room temperature, testing the adhesive force, the surface hardness and the wear-resisting effect of the surface coating.
Example 7
Preparing a water-based resin:
adding 170 parts of deionized water, 30 parts of n-butanol, 1 part of sodium dodecyl sulfate, 35 parts of isobornyl methacrylate and 0.1 part of potassium persulfate into a reaction kettle, starting a stirring device, stirring to be uniform milky white, then starting a heating device, controlling the kettle temperature at 80 ℃, continuously adding 80 parts of isooctyl methacrylate at the rate of 30 parts/hour, adding 17 parts of gamma-methacryloxypropyltrimethoxysilane-treated nano-alumina at the rate of 5 parts/hour, adding 0.2 part of potassium persulfate at the rate of 0.1 part/hour, adding 100 parts of deionized water at the rate of 40 parts/hour, preserving heat for 5 hours after all materials are added, then adding 0.8 part of sodium bicarbonate, cooling to room temperature, and filtering with 500-mesh filter cloth to obtain the water-based resin.
Preparing a water-based paint by using the water-based resin, and forming a coating layer on the sample by using the water-based paint:
(1) preparation of the water-based paint: to 98 parts ofAdding 0.3 part of resin
Wet 240, 0.5 part of BYK-024, 4 parts of diethylene glycol ethyl ether, 0.3 part of PUR44 and 0.2 part of PUR85 are uniformly stirred to obtain the water-based paint.
(2) The construction method comprises the following steps: spraying the coating on an ABS sample piece;
(3) the curing mode is as follows: placing the sprayed sample piece in a 60 ℃ oven to be baked for 70 minutes and then taking out;
(4) and (3) performance detection: and after the solidified sample piece is cooled to room temperature, testing the adhesive force, the surface hardness and the wear-resisting effect of the surface coating.
Example 8
Preparing a water-based resin:
adding 100 parts of deionized water, 20 parts of isopropanol, 2 parts of sodium dodecyl sulfate, 40 parts of methyl methacrylate and 0.1 part of potassium persulfate into a reaction kettle, starting a stirring device, stirring to obtain uniform milky white, then starting a heating device, controlling the kettle temperature at 80 ℃, continuously adding 60 parts of isooctyl methacrylate at the rate of 30 parts/hour, adding 15 parts of gamma-methacryloxypropyltrimethoxysilane-treated nano-alumina at the rate of 5 parts/hour, adding 0.3 part of potassium persulfate at the rate of 0.1 part/hour, adding 120 parts of deionized water at the rate of 30 parts/hour, preserving heat for 5 hours after all materials are added, then adding 1 part of sodium acetate, cooling to room temperature, and filtering with 500-mesh filter cloth to obtain the water-based resin.
Preparing a water-based paint by using the water-based resin, and forming a coating layer on the sample by using the water-based paint:
(1) preparation of the water-based paint: to 98 parts of a synthetic resin, 0.3 part
Wet 240, 0.5 part of BYK-093, 4 parts of diethylene glycol ethyl ether and 0.2 part of PUR62 are uniformly stirred to obtain the water-based paint.
(2) The construction method comprises the following steps: spraying the coating on a PC sample;
(3) the curing mode is as follows: placing the sprayed sample piece in a 70 ℃ oven to be baked for 50 minutes and then taking out;
(4) and (3) performance detection: and after the solidified sample piece is cooled to room temperature, testing the adhesive force, the surface hardness and the wear-resisting effect of the surface coating.
Example 9
Preparing a water-based resin:
adding 200 parts of deionized water, 40 parts of isopropanol, 3 parts of sodium dodecyl benzene sulfonate, 40 parts of n-butyl methacrylate and 0.1 part of potassium persulfate into a reaction kettle, starting a stirring device, stirring to be uniform milky white, then starting a heating device, controlling the kettle temperature at 70 ℃, continuously adding 60 parts of vinyl acetate at the rate of 25 parts per hour, adding 15 parts of nano-alumina treated by vinyltriethoxysilane at the rate of 5 parts per hour, adding 0.4 part of potassium persulfate at the rate of 0.1 part per hour, adding 100 parts of deionized water at the rate of 40 parts per hour, keeping the temperature for 5 hours after all materials are added, then adding 1 part of sodium acetate, cooling to room temperature, and filtering by using 500-mesh filter cloth to obtain the water-based resin.
Preparing a water-based paint by using the water-based resin, and forming a coating layer on the sample by using the water-based paint:
(1) preparation of the water-based paint: to 95 parts of a synthetic resin, 0.1 part
Wet 270, 0.2 part of BYK-093, 3 parts of ethanol and 0.2 part of PUR44, and stirring uniformly to obtain the water-based paint.
(2) The construction method comprises the following steps: spraying the coating on an ABS sample piece;
(3) the curing mode is as follows: placing the sprayed sample piece in a 60 ℃ oven to be baked for 50 minutes and then taking out;
(4) and (3) performance detection: and after the solidified sample piece is cooled to room temperature, testing the adhesive force, the surface hardness and the wear-resisting effect of the surface coating.
Example 10
Preparing a water-based resin:
adding 150 parts of deionized water, 20 parts of isopropanol, 1 part of sodium lauryl sulfate, 20 parts of n-butyl methacrylate and 0.1 part of potassium persulfate into a reaction kettle, starting a stirring device, stirring to be uniform milky white, then starting a heating device, controlling the kettle temperature at 80 ℃, continuously adding 70 parts of styrene at a rate of 25 parts per hour, adding 20 parts of vinyltrimethoxysilane-treated nano alumina at a rate of 5 parts per hour, adding 0.4 part of potassium persulfate at a rate of 0.15 part per hour, adding 110 parts of deionized water at a rate of 40 parts per hour, keeping the temperature for 5 hours after all materials are added, then adding 1.5 parts of disodium hydrogen phosphate, cooling to room temperature, and filtering with 500-mesh filter cloth to obtain the water-based resin.
Preparing a water-based paint by using the water-based resin, and forming a coating layer on the sample by using the water-based paint:
(1) preparation of the water-based paint: adding 0.3 part of synthetic resin to 90 parts of synthetic resin
Twin 4100, 0.3 part of BYK-028, 5 parts of dipropylene glycol butyl ether and 0.2 part of PUR62, and uniformly stirring to obtain the water-based paint.
(2) The construction method comprises the following steps: spraying the coating on a PVC sample;
(3) the curing mode is as follows: placing the sprayed sample piece in a 50 ℃ oven to bake for 80 minutes and then taking out;
(4) and (3) performance detection: and after the solidified sample piece is cooled to room temperature, testing the adhesive force, the surface hardness and the wear-resisting effect of the surface coating.
Example 11
Preparing a water-based resin:
adding 100 parts of deionized water, 30 parts of isopropanol, 1 part of sodium dodecyl sulfate, 40 parts of n-butyl methacrylate and 0.1 part of potassium persulfate into a reaction kettle, starting a stirring device, stirring to be uniform milky white, then starting a heating device, controlling the kettle temperature at 80 ℃, continuously adding 80 parts of styrene at the rate of 30 parts per hour, adding 17 parts of vinyltrimethoxysilane-treated nano alumina at the rate of 5 parts per hour, adding 0.3 part of potassium persulfate at the rate of 0.15 part per hour, adding 120 parts of deionized water at the rate of 40 parts per hour, keeping the temperature for 5 hours after all materials are added, then adding 1 part of disodium hydrogen phosphate, cooling to room temperature, and filtering with 500-mesh filter cloth to obtain the water-based resin.
Preparing a water-based paint by using the water-based resin, and forming a coating layer on the sample by using the water-based paint:
(1) preparation of the water-based paint: to 96 parts of synthetic resin was added 0.2 part
Twin 4100, 0.2 parts
Airex 902W, 5 parts of dipropylene glycol butyl ether and 0.2 part of PUR44, and uniformly stirring to obtain the water-based paint.
(2) The construction method comprises the following steps: spraying the coating on an ABS sample piece;
(3) the curing mode is as follows: placing the sprayed sample piece in a 50 ℃ oven to bake for 80 minutes and then taking out;
(4) and (3) performance detection: and after the solidified sample piece is cooled to room temperature, testing the adhesive force, the surface hardness and the wear-resisting effect of the surface coating.
Example 12
Preparing a water-based resin:
adding 150 parts of deionized water, 20 parts of n-butyl alcohol, 3 parts of sodium dodecyl benzene sulfonate, 40 parts of methyl methacrylate and 0.1 part of potassium persulfate into a reaction kettle, starting a stirring device, stirring to be uniform milky white, then starting a heating device, controlling the kettle temperature at 80 ℃, continuously adding 80 parts of styrene at the rate of 30 parts per hour, adding 20 parts of nano aluminum oxide treated by vinyl triethoxysilane at the rate of 5 parts per hour, adding 0.3 part of potassium persulfate at the rate of 0.15 part per hour, adding 120 parts of deionized water at the rate of 40 parts per hour, keeping the temperature for 5 hours after all materials are added, then adding 1 part of disodium hydrogen phosphate, cooling to the room temperature, and filtering by using 500-mesh filter cloth to obtain the water-based resin.
Preparing a water-based paint by using the water-based resin, and forming a coating layer on the sample by using the water-based paint:
(1) preparation of the water-based paint: 0.3 part of BYK-346, 0.5 part of BYK-093, 3 parts of diethylene glycol monobutyl ether and 0.1 part of PUR44 are added into 100 parts of synthetic resin, and the mixture is uniformly stirred to obtain the water-based paint.
(2) The construction method comprises the following steps: spraying the coating on a PC sample;
(3) the curing mode is as follows: placing the sprayed sample piece in a 70 ℃ oven to be baked for 50 minutes and then taking out;
(4) and (3) performance detection: and after the solidified sample piece is cooled to room temperature, testing the adhesive force, the surface hardness and the wear-resisting effect of the surface coating.
Example 13
Preparing a water-based resin:
adding 200 parts of deionized water, 40 parts of n-butyl alcohol, 3 parts of sodium dodecyl benzene sulfonate, 30 parts of methyl methacrylate and 0.1 part of potassium persulfate into a reaction kettle, starting a stirring device, stirring to be uniform milky white, then starting a heating device, controlling the kettle temperature at 80 ℃, continuously adding 80 parts of vinyl acetate at the rate of 30 parts per hour, adding 20 parts of nano aluminum oxide treated by vinyl triethoxysilane at the rate of 10 parts per hour, adding 0.3 part of potassium persulfate at the rate of 0.15 part per hour, adding 100 parts of deionized water at the rate of 40 parts per hour, keeping the temperature for 5 hours after all materials are added, then adding 1 part of disodium hydrogen phosphate, cooling to the room temperature, and filtering by using 500-mesh filter cloth to obtain the water-based resin.
Preparing a water-based paint by using the water-based resin, and forming a coating layer on the sample by using the water-based paint:
(1) preparation of the water-based paint: adding 0.1 part of BYK-349, 0.3 part of BYK-028, 5 parts of ethylene glycol butyl ether and 0.5 part of PUR40 into 100 parts of synthetic resin;
(2) the construction method comprises the following steps: spraying the coating on a PMMA sample;
(3) the curing mode is as follows: placing the sprayed sample piece in a 60 ℃ oven to be baked for 50 minutes and then taking out;
(4) and (3) performance detection: and after the solidified sample piece is cooled to room temperature, testing the adhesive force, the surface hardness and the wear-resisting effect of the surface coating.
Example 14
Preparing a water-based resin:
adding 180 parts of deionized water, 20 parts of ethanol, 3 parts of octylphenol polyoxyethylene ether, 30 parts of isobornyl methacrylate and 0.1 part of potassium persulfate into a reaction kettle, starting a stirring device, stirring to be uniform milky white, then starting a heating device, controlling the kettle temperature at 80 ℃, continuously adding 80 parts of vinyl acetate at the rate of 30 parts/hour, adding 20 parts of nano-alumina treated by vinyl triethoxysilane at the rate of 10 parts/hour, adding 0.3 part of potassium persulfate at the rate of 0.15 part/hour, adding 100 parts of deionized water at the rate of 40 parts/hour, keeping the temperature for 5 hours after all materials are added, then adding 1 part of disodium hydrogen phosphate, cooling to room temperature, and filtering by using 500-mesh filter cloth to obtain the water-based resin.
Preparing a water-based paint by using the water-based resin, and forming a coating layer on the sample by using the water-based paint:
(1) preparation of the water-based paint: adding 0.2 part of synthetic resin to 90 parts of synthetic resin
Wet 240, 0.3 part BYK-028, 3 parts butyl cellosolve, 0.2 part PUR 44;
(2) the construction method comprises the following steps: spraying the coating on a PMMA sample;
(3) the curing mode is as follows: placing the sprayed sample piece in a 60 ℃ oven to be baked for 50 minutes and then taking out;
(4) and (3) performance detection: and after the solidified sample piece is cooled to room temperature, testing the adhesive force, the surface hardness and the wear-resisting effect of the surface coating.
Example 15
Preparing a water-based resin:
adding 100 parts of deionized water, 40 parts of ethanol, 2 parts of octylphenol polyoxyethylene ether, 40 parts of isobornyl methacrylate and 0.1 part of sodium persulfate into a reaction kettle, starting a stirring device, stirring to be uniform milky white, then starting a heating device, controlling the kettle temperature at 60 ℃, continuously adding 80 parts of vinyl acetate at the rate of 30 parts/hour, adding 20 parts of nano-alumina treated by vinyl triethoxysilane at the rate of 5 parts/hour, adding 0.3 part of potassium persulfate at the rate of 0.1 part/hour, adding 120 parts of deionized water at the rate of 40 parts/hour, keeping the temperature for 5 hours after all materials are added, then adding 1 part of sodium acetate, cooling to room temperature, and filtering by using 500-mesh filter cloth to obtain the water-based resin.
Preparing a water-based paint by using the water-based resin, and forming a coating layer on the sample by using the water-based paint:
(1) preparation of the water-based paint: to 95 parts of a synthetic resin, 0.3 part
Wet 270, 0.2 part BYK-024, 5 parts butyl diglycol, 0.5 part PUR 62;
(2) the construction method comprises the following steps: spraying the coating on a PVC sample;
(3) the curing mode is as follows: placing the sprayed sample piece in a 60 ℃ oven to be baked for 60 minutes and then taking out;
(4) and (3) performance detection: and after the solidified sample piece is cooled to room temperature, testing the adhesive force, the surface hardness and the wear-resisting effect of the surface coating.
Comparative example 1
Preparing a water-based resin:
40 parts of n-butyl methacrylate is dropwise added into 120 parts of propylene glycol methyl ether acetate, the dropping rate is controlled at 10 parts per hour, 60 parts of isobornyl acrylate is controlled at 15 parts per hour, 0.8 part of azobisisobutyronitrile is controlled at 0.2 part per hour, a stirring device and a heating device are started, the kettle temperature is controlled at 80 ℃, after all materials are added, the temperature is kept for 5 hours, the mixture is cooled to the room temperature, and the mixture is filtered by 500-mesh filter cloth, so that the water-based resin is obtained.
Preparing a water-based paint by using the water-based resin, and forming a coating layer on the sample by using the water-based paint:
(1) preparation of the water-based paint: adding 20 parts of butyl cellosolve and 15 parts of nano alumina into 60 parts of synthetic resin, and uniformly stirring;
(2) the construction method comprises the following steps: spraying the coating on an ABS sample piece;
(3) the curing mode is as follows: placing the sprayed sample piece in a 60 ℃ oven to be baked for 60 minutes and then taking out;
(4) and (3) performance detection: and after the solidified sample piece is cooled to room temperature, testing the adhesive force, the surface hardness and the wear-resisting effect of the surface coating.
Comparative example 2
Adding 130 parts of deionized water, 30 parts of n-butyl alcohol, 1.2 parts of sodium dodecyl sulfate, 40 parts of methyl methacrylate and 0.1 part of potassium persulfate into a reaction kettle, starting a stirring device, stirring to be uniform milky white, then starting a heating device, controlling the kettle temperature at 80 ℃, continuously adding 60 parts of styrene, wherein the adding rate is 25 parts per hour, 0.3 part of ammonium persulfate is 0.1 part per hour, adding 120 parts of deionized water at the adding rate of 30 parts per hour, keeping the temperature for 5 hours after all materials are added, then adding 1.1 part of disodium hydrogen phosphate, cooling to room temperature, and filtering by using 500-mesh filter cloth to obtain the water-based resin.
Preparing a water-based paint by using the water-based resin, and forming a coating layer on the sample by using the water-based paint:
(1) preparation of the water-based paint: to 93 parts of a synthetic resin, 0.2 part
Twin 4100, 0.3 parts
Airex 902W, 4 parts of dipropylene glycol butyl ether and 0.1 part of PUR44, and uniformly stirring to obtain the water-based paint.
(2) The construction method comprises the following steps: spraying the coating on a PC sample;
(3) the curing mode is as follows: placing the sprayed sample piece in a 60 ℃ oven to be baked for 60 minutes and then taking out;
(4) and (3) performance detection: and after the solidified sample piece is cooled to room temperature, testing the adhesive force, the surface hardness and the wear-resisting effect of the surface coating.
Hardness and wear resistance tests, the test results are shown in table 1:
adhesion test reference ASTM D3359;
the surface pencil hardness test refers to ASTM D3363, using Mitsubishi Uni pencil, nib load 500 g;
and (3) wear resistance test:
on a flat sample, a force of 500g/cm2 is applied in the vertical direction by using 0000# steel wool, a test area is rubbed back and forth, the stroke distance is 6cm, the speed is 60 back and forth/min, one back and forth is counted as 1 cycle, after 500, 1000 and 1500 times of tests, the surface is cleaned, and whether scratches exist on the surface is observed.
TABLE 1
As can be seen from table 1, with the water-based paint provided in the embodiment of the present invention, on the premise of environmental protection, the wear resistance of the prepared coating is very stable, and no scratch exists in 500 times, 1000 times, and 1500 times of wear resistance tests, while the solvent-based paint in comparative example 1 does not have a scratch, but the formulation contains a large amount of solvent, which causes environmental pollution, the same synthesis method is adopted in comparative example 2, but the filler is added after the formulation, and the water-based paint has good wear resistance in the initial stage of wear resistance tests, but the wear resistance is greatly reduced as the number of tests increases, and a slight scratch appears in 1000 times and a scratch appears in 1500 times, respectively.
The above description is only for facilitating the understanding of the technical solutions of the present invention by those skilled in the art, and is not intended to limit the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. An aqueous resin, characterized in that substances required for the synthesis of the aqueous resin comprise: 50-300 parts of first deionized water, 10-60 parts of alcohol solvent, 10-60 parts of first monomer, 0.1-8 parts of emulsifier, 0.05-5 parts of first initiator, 30-120 parts of second monomer, 0.05-5 parts of second initiator, 5-50 parts of wear-resistant filler and 50-200 parts of second deionized water.
2. The aqueous resin of claim 1, wherein the substances required for the synthesis of the aqueous resin further comprise: 0.01-10 parts of pH regulator.
3. The aqueous resin according to claim 1, wherein the first monomer is at least one selected from the group consisting of methyl methacrylate, n-butyl methacrylate, isobornyl methacrylate, ethyl methacrylate, isooctyl methacrylate, and butyl acrylate;
the second monomer is at least one of methyl methacrylate, n-butyl methacrylate, styrene, vinyl acetate and ethyl methacrylate.
4. The waterborne resin of claim 1, wherein the first initiator and the second initiator are selected from one of ammonium persulfate, sodium persulfate and potassium persulfate.
5. The aqueous resin according to claim 1, wherein the emulsifier is at least one selected from the group consisting of polyoxyethylene octylphenol ether, polyoxyethylene nonylphenol ether, sodium dodecylbenzene sulfonate, sodium dodecylsulfonate, and sodium lauryl sulfonate.
6. A method for preparing an aqueous resin, the method comprising:
adding 50-300 parts by weight of first deionized water, 10-60 parts by weight of alcohol solvent, 10-60 parts by weight of first monomer, 0.1-8 parts by weight of emulsifier and 0.05-5 parts by weight of first initiator into a reactor, uniformly stirring, and preserving heat to reaction temperature;
and adding 30-120 parts by weight of a second monomer, 0.05-5 parts by weight of a second initiator, 5-50 parts by weight of wear-resistant filler and 50-200 parts by weight of second deionized water into the reactor, carrying out heat preservation reaction, and filtering to obtain the water-based resin.
7. The method for preparing an aqueous resin according to claim 6, further comprising: after the incubation reaction, 0.01 to 10 parts by weight of a pH adjusting agent is added to the reactor.
8. The method of claim 6 or 7, wherein the second monomer, the second initiator, the wear-resistant filler and the second deionized water are added dropwise into the reactor.
9. The method for producing an aqueous resin according to claim 8, wherein the dropping speed of the second monomer is 5 to 50 parts by weight per hour;
the dropping speed of the wear-resistant filler is 1-20 parts by weight/hour;
the dropping speed of the second initiator is 0.01-3 parts by weight/hour;
the acceleration speed of the second deionized water is 10-60 parts by weight/hour.
10. An aqueous coating material, characterized in that it comprises the aqueous resin according to any one of claims 1 to 5.
11. The water-based paint according to claim 10, characterized in that the water-based paint comprises the following components in parts by weight:
40-150 parts of the water-based resin, 0.01-3 parts of a wetting agent, 0.01-3 parts of a defoaming agent, 0.1-10 parts of a film-forming assistant and 0.01-5 parts of a thickening agent.
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