CN113462275A - Preparation method of nano coating liquid - Google Patents
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- CN113462275A CN113462275A CN202110745396.2A CN202110745396A CN113462275A CN 113462275 A CN113462275 A CN 113462275A CN 202110745396 A CN202110745396 A CN 202110745396A CN 113462275 A CN113462275 A CN 113462275A
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- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/08—Polyurethanes from polyethers
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
- C08G18/751—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring
- C08G18/752—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group
- C08G18/753—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group
- C08G18/755—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group and at least one isocyanate or isothiocyanate group linked to a secondary carbon atom of the cycloaliphatic ring, e.g. isophorone diisocyanate
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/22—Luminous paints
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- 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
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2248—Oxides; Hydroxides of metals of copper
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Abstract
The invention belongs to the technical field of electronic product coating, and particularly relates to a preparation method of a nano coating liquid, which comprises the following steps of selecting 10-20 parts of cuprous oxide, 10-30 parts of glass fiber, 60-80 parts of polyether polyol, 30-40 parts of isophorone diisocyanate, 60-70 parts of deionized water, 40-45 parts of polyethylene wax emulsion and 80-100 parts of sol resin according to mass proportion; dehydrating polyether polyol to obtain a dehydrated alcohol solution; adding isophorone diisocyanate and cuprous oxide with the mass of 1/3-1/2 into a dehydrated alcohol solution, and mixing to obtain a polyurethane prepolymer; adding deionized water and polyethylene wax emulsion into the polyurethane prepolymer, and mixing to form emulsion; glass fiber and the residual cuprous oxide are added into the sol resin, and are uniformly mixed and then added into the emulsion to form blue coating liquid, so that peculiar smell is avoided in the preparation process, and the electronic product sprayed with the coating liquid has the blue light prevention effect.
Description
Technical Field
The invention belongs to the technical field of electronic product coating, and particularly relates to a preparation method of a nano coating liquid.
Background
With the continuous application of electronic products, although people do not need to carry certain electronic equipment for a long time to work or live underwater, the electronic products can be instantly 27538caused by accidental water immersion in life sometimes, such as sweat generated by washing, raining and running sports, and the like. Therefore, the waterproof process for electronic products gradually becomes the standard matching of the electronic products.
The most common waterproof design is structural waterproof, and through hydrophobic property and flow guide, the external package is effectively isolated from the internal electric part, namely, the mold of the product has the characteristic of plugging, so that the waterproof purpose is achieved, and the cost is low; secondly, the PCB of the electronic product is wrapped by epoxy resin for encapsulation and water prevention, so that the service life of the circuit board is greatly prolonged, but the mode has poor heat dissipation effect and overhigh repair cost; and high-end electronic products usually cover the nanometer coating on the PCB board, and thickness is only 2 ~ 4 microns, effectively reduces PCB surface energy, forms the lotus leaf effect, and heat dispersion is good, does not influence the connector and normally electrically conducts, reaches better water-proof effects.
However, the nano coating adopted at present is complex in formula, and a large amount of toxic gas or peculiar smell is generated during preparation, so that the preparation cost is high.
Disclosure of Invention
In order to solve the problems that the formula of the electronic product nano coating is responsible for and peculiar smell is easily generated during preparation in the prior art, the invention provides the following technical scheme.
A preparation method of a nano coating liquid comprises the following steps:
firstly, selecting the following raw materials according to the mass ratio: 10-20 parts of cuprous oxide, 10-30 parts of glass fiber, 60-80 parts of polyether polyol, 30-40 parts of isophorone diisocyanate, 60-70 parts of deionized water, 40-45 parts of polyethylene wax emulsion and 80-100 parts of sol resin;
step two, dehydrating the polyether polyol selected in the step one to obtain a dehydrated alcohol solution;
step three, adding the isophorone diisocyanate selected in the step one and cuprous oxide with the mass of 1/3-1/2 into the dehydrated alcohol solution prepared in the step two, and mixing to obtain a polyurethane prepolymer;
step four, adding the deionized water and the polyethylene wax emulsion selected in the step one into the polyurethane prepolymer prepared in the step three, and mixing to form an emulsion;
and step five, adding the glass fiber selected in the step one and the residual cuprous oxide into sol resin, uniformly mixing, and adding into the emulsion prepared in the step four to form blue coating liquid.
As a further improvement of the preparation method of the nano coating liquid, the cuprous oxide is prepared by reducing copper oxide powder by hydrazine hydrate.
As a further improvement of the preparation method of the nano coating liquid, cetyl trimethyl ammonium bromide and polyethylene glycol are added as surfactants when hydrazine hydrate is used for reducing copper oxide powder, so that the prepared cuprous oxide particles are smaller.
In the second step, the selected polyether polyol is vacuumized to 0.08-0.12 MPa at the temperature of 60-75 ℃, and is subjected to dehydration treatment for 40-70 minutes to obtain the dehydrated alcohol solution.
In the third step, the selected isophorone diisocyanate and 1/3-1/2 mass cuprous oxide are added into the dehydrated alcohol solution, the mixture is uniformly mixed, the temperature is raised to 50-60 ℃ under the protection of nitrogen, and the polyurethane prepolymer is obtained after heat preservation reaction for 120-180 minutes.
As a further improvement of the preparation method of the nano coating liquid, in the third step, the selected 1/2 mass cuprous oxide is added into the dehydrated alcohol solution.
As a further improvement of the preparation method of the nano coating liquid, in the fourth step, the selected deionized water and the polyethylene wax emulsion are added into the polyurethane prepolymer, and the mixture is uniformly mixed and then heated to 50-70 ℃ to form an emulsion.
In the fifth step, the selected cuprous oxide and the glass fiber are added into the sol resin, the mixture is uniformly mixed and heated to 50-70 ℃, and the mixture is stirred for 20-40 minutes at the rotating speed of 100-300 revolutions per minute to form the final blue coating liquid.
The preparation method of the nano coating liquid has the beneficial effects that: in the process of generating the polyurethane prepolymer by polyether polyol and isophorone diisocyanate, cuprous oxide particle powder is added, and as cuprous oxide has very strong adsorption effect on chlorophenol and methyl orange, peculiar smell generated in the reaction of polyether polyol and isophorone diisocyanate can be effectively eliminated; in addition, the nano cuprous oxide particle powder is preferably adopted, the particle size is small, the band gap energy is low, the blue fluorescence activity is realized, the toughness of the coating liquid is improved, the coating liquid is blue, blue light can be effectively dispersed on a screen of an electronic product, and the blue light prevention effect is achieved.
Drawings
FIG. 1 is a schematic flow chart of a preparation method according to an embodiment of the present invention;
Detailed Description
The present invention will be further described with reference to the following examples and the accompanying drawings, wherein the examples are only a part of the examples of the present invention, and the examples are only for explaining the present invention and do not limit the scope of the present invention in any way.
Example one
A preparation method of a nano coating liquid specifically comprises the following steps:
firstly, selecting the following raw materials according to the mass ratio: 10 parts of cuprous oxide, 10 parts of glass fiber, 60 parts of polyether polyol, 30 parts of isophorone diisocyanate, 60 parts of deionized water, 40 parts of polyethylene wax emulsion and 80 parts of sol resin;
step two, vacuumizing the polyether polyol selected in the step one to 0.08MPa at the temperature of 60 ℃, and dehydrating for 40 minutes to obtain a dehydrated alcohol solution;
step three, adding the isophorone diisocyanate selected in the step one and cuprous oxide with the mass of 1/3 into the dehydrated alcohol solution prepared in the step two, uniformly mixing, heating to 50 ℃ under the protection of nitrogen, carrying out heat preservation reaction for 120 minutes, wherein a large amount of foams with peculiar smell are generated when polyether polyol reacts with isophorone diisocyanate, and cuprous oxide has very strong adsorption effect on chlorophenol and methyl orange, so that the peculiar smell generated when the polyether polyol reacts with isophorone diisocyanate can be effectively eliminated, the operating environment is improved, and a polyurethane prepolymer is obtained;
step four, adding the deionized water and the polyethylene wax emulsion selected in the step one into the polyurethane prepolymer prepared in the step three, wherein the deionized water and the polyethylene wax emulsion are used as catalysts, reducing the curing temperature of the polyurethane prepolymer, shortening substances required by curing, and heating to 50 ℃ after uniform mixing to form an emulsion;
and step five, adding the glass fiber selected in the step one and the remaining 2/3 cuprous oxide into the sol resin, uniformly mixing, heating to 50 ℃, and stirring at the rotating speed of 100 revolutions per minute for 20 minutes, wherein the glass fiber is used for improving the toughness of the finally formed coating liquid, and the cuprous oxide has blue fluorescence activity, so that the blue coating liquid is finally formed.
Example two
A preparation method of a nano coating liquid specifically comprises the following steps:
firstly, selecting the following raw materials according to the mass ratio: 20 parts of cuprous oxide, 30 parts of glass fiber, 80 parts of polyether polyol, 40 parts of isophorone diisocyanate, 70 parts of deionized water, 45 parts of polyethylene wax emulsion and 100 parts of sol resin;
step two, vacuumizing the polyether polyol selected in the step one to 0.12MPa at 75 ℃, and dehydrating for 70 minutes to obtain a dehydrated alcohol solution;
step three, adding the isophorone diisocyanate selected in the step one and cuprous oxide with the mass of 1/2 into the dehydrated alcohol solution prepared in the step two, uniformly mixing, heating to 60 ℃ under the protection of nitrogen, carrying out heat preservation reaction for 180 minutes, wherein a large amount of foams with peculiar smell are generated when polyether polyol reacts with isophorone diisocyanate, and cuprous oxide has very strong adsorption effect on chlorophenol and methyl orange, so that the peculiar smell generated when the polyether polyol reacts with isophorone diisocyanate can be effectively eliminated, the operating environment is improved, and a polyurethane prepolymer is obtained;
step four, adding the deionized water and the polyethylene wax emulsion selected in the step one into the polyurethane prepolymer prepared in the step three, wherein the deionized water and the polyethylene wax emulsion are used as catalysts, reducing the curing temperature of the polyurethane prepolymer, shortening substances required by curing, and heating to 70 ℃ after uniform mixing to form an emulsion;
and step five, adding the glass fiber selected in the step one and the remaining 1/2 cuprous oxide into the sol resin, uniformly mixing, heating to 70 ℃, and stirring for 40 minutes at a rotating speed of 300 revolutions per minute, wherein the glass fiber is used for improving the toughness of the finally formed coating liquid, and the cuprous oxide has blue fluorescence activity, so that the blue coating liquid is finally formed.
EXAMPLE III
A preparation method of a nano coating liquid specifically comprises the following steps:
firstly, selecting the following raw materials according to the mass ratio: 15 parts of cuprous oxide, 20 parts of glass fiber, 70 parts of polyether polyol, 35 parts of isophorone diisocyanate, 65 parts of deionized water, 42 parts of polyethylene wax emulsion and 90 parts of sol resin;
step two, vacuumizing the polyether polyol selected in the step one to 0.1MPa at 70 ℃, and dehydrating for 60 minutes to obtain a dehydrated alcohol solution;
step three, adding the isophorone diisocyanate selected in the step one and cuprous oxide with the mass of 1/2 into the dehydrated alcohol solution prepared in the step two, uniformly mixing, heating to 50 ℃ under the protection of nitrogen, and carrying out heat preservation reaction for 150 minutes, wherein a large amount of foams with peculiar smell are generated when the polyether polyol reacts with the isophorone diisocyanate, and the cuprous oxide has very strong adsorption effect on chlorophenol and methyl orange, so that the peculiar smell generated when the polyether polyol reacts with the isophorone diisocyanate can be effectively eliminated, the operating environment is improved, and a polyurethane prepolymer is obtained;
step four, adding the deionized water and the polyethylene wax emulsion selected in the step one into the polyurethane prepolymer prepared in the step three, wherein the deionized water and the polyethylene wax emulsion are used as catalysts, reducing the curing temperature of the polyurethane prepolymer, shortening substances required by curing, and heating to 70 ℃ after uniform mixing to form an emulsion;
and step five, adding the glass fiber selected in the step one and the remaining 1/2 cuprous oxide into the sol resin, uniformly mixing, heating to 60 ℃, and stirring for 30 minutes at a rotating speed of 200 revolutions per minute, wherein the glass fiber is used for improving the toughness of the finally formed coating liquid, and the cuprous oxide has blue fluorescence activity, so that the blue coating liquid is finally formed.
In the three embodiments, cuprous oxide is prepared by hydrazine hydrate reduced copper oxide powder, and cetyl trimethyl ammonium bromide and polyethylene glycol are added to be used as surfactants when hydrazine hydrate reduced copper oxide powder is used, so that the prepared cuprous oxide particles are smaller and more uniform. During preparation of the coating liquid, the nano cuprous oxide particle powder is preferably adopted, the particle size is small, the band gap energy is low, the blue fluorescence activity is realized, the toughness of the coating liquid is improved, the coating liquid is blue, blue light can be effectively dispersed on a screen of an electronic product, and the blue light prevention effect is achieved.
Further, another embodiment provides an electronic product, the coating liquid prepared by the above preparation method is sprayed on the electronic product, specifically, the coating liquid is sprayed on the electronic product through an atomizing nozzle, and a layer of film is formed after cooling and solidification, so that the electronic product has good waterproof and scratch-proof properties. In addition, as cuprous oxide is added into the coating liquid, the cuprous oxide can react with sulfydryl and disulfide bonds in the compound to generate a corresponding sulfydryl copper compound, and the sulfydryl and the disulfide bonds play a key role in normal life activities of microorganisms, the cuprous oxide can interfere the chemical reaction of the microorganisms, further interfere the physiological activities of the microorganisms and induce the apoptosis of the microorganisms. The electronic product sprayed with the film coating liquid can keep a good sanitary environment for a long time, reduce the propagation path of bacteria and avoid worrying about various diseases caused by the bacterial breeding of the electronic product.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. The preparation method of the nano coating liquid is characterized by comprising the following steps of:
firstly, selecting the following raw materials according to the mass ratio: 10-20 parts of cuprous oxide, 10-30 parts of glass fiber, 60-80 parts of polyether polyol, 30-40 parts of isophorone diisocyanate, 60-70 parts of deionized water, 40-45 parts of polyethylene wax emulsion and 80-100 parts of sol resin;
step two, dehydrating the polyether polyol selected in the step one to obtain a dehydrated alcohol solution;
step three, adding the isophorone diisocyanate selected in the step one and cuprous oxide with the mass of 1/3-1/2 into the dehydrated alcohol solution prepared in the step two, and mixing to obtain a polyurethane prepolymer;
step four, adding the deionized water and the polyethylene wax emulsion selected in the step one into the polyurethane prepolymer prepared in the step three, and mixing to form an emulsion;
and step five, adding the glass fiber selected in the step one and the residual cuprous oxide into sol resin, uniformly mixing, and adding into the emulsion prepared in the step four to form blue coating liquid.
2. The method according to claim 1, wherein the nano copper oxide is prepared by reducing copper oxide powder with hydrazine hydrate.
3. The method according to claim 2, wherein cetyltrimethylammonium bromide and polyethylene glycol are added during the reduction of copper oxide powder by hydrazine hydrate.
4. The method for preparing a nano coating liquid according to claim 3, wherein in the second step, the selected polyether polyol is vacuumized to 0.08-0.12 MPa at 60-75 ℃, and the dehydrated alcohol solution is obtained after dehydration treatment for 40-70 minutes.
5. The preparation method of the nano coating liquid according to claim 4, wherein in the third step, the selected isophorone diisocyanate and 1/3-1/2 mass cuprous oxide are added into the dehydrated alcohol solution, the mixture is uniformly mixed, the temperature is raised to 50-60 ℃ under the protection of nitrogen, and the polyurethane prepolymer is obtained after heat preservation reaction for 120-180 minutes.
6. The method of claim 5, wherein in step three, the selected 1/2 mass cuprous oxide is added to the dehydrated alcohol solution.
7. The method for preparing a nano coating liquid according to claim 5, wherein in the fourth step, the selected deionized water and the polyethylene wax emulsion are added into the polyurethane prepolymer, mixed uniformly and heated to 50-70 ℃ to form an emulsion.
8. The preparation method of the nano coating liquid according to claim 7, wherein in the fifth step, the selected cuprous oxide and the glass fiber are added into the sol resin, the mixture is uniformly mixed and heated to 50-70 ℃, and the mixture is stirred at a rotation speed of 100-300 rpm for 20-40 minutes to form the final blue coating liquid.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117801343A (en) * | 2023-12-28 | 2024-04-02 | 佛山市彩龙镀膜包装材料有限公司 | Polyester copper-plated film and preparation process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117801343A (en) * | 2023-12-28 | 2024-04-02 | 佛山市彩龙镀膜包装材料有限公司 | Polyester copper-plated film and preparation process thereof |
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