CN107329580B - Wear-resisting dustproof notebook computer keyboard panel baking finish spare - Google Patents
Wear-resisting dustproof notebook computer keyboard panel baking finish spare Download PDFInfo
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- CN107329580B CN107329580B CN201710732343.0A CN201710732343A CN107329580B CN 107329580 B CN107329580 B CN 107329580B CN 201710732343 A CN201710732343 A CN 201710732343A CN 107329580 B CN107329580 B CN 107329580B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
- G06F3/0202—Constructional details or processes of manufacture of the input device
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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
- C09D151/08—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 macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention relates to the technical field of notebook computer plastic parts, in particular to a wear-resistant and dustproof notebook computer keyboard panel baking varnish part. The key slot is divided into a cursor moving key area and other key areas, and the cursor moving key area is arranged at the lower end of the right side of the keyboard panel body, so that the operation is convenient, and meanwhile, the aesthetic feeling is increased; the LED panel lamp mounting groove hole is formed in the upper portion of the left side of the panel body, so that the keyboard can be operated conveniently when light is dark, and the use convenience and the functionality are improved; the arrangement of the heat dissipation window and the heat dissipation small holes improves the heat dissipation effect; the wear-resistant water-based baking varnish coating increases the wear resistance and prolongs the service life; the dustproof panel improves the dustproof performance; compared with a spraying process, the roller coating process is quick-drying and formed, the utilization degree reaches more than 90%, volatilization and waste are reduced, and meanwhile, water is used as a solvent, so that the roller coating process is environment-friendly, strong in adhesive force, and good in yellowing resistance, chemical corrosion resistance and wear resistance; simple preparation process, low cost, environmental protection, no toxicity and no pollution.
Description
Technical Field
The invention relates to the technical field of notebook computer plastic parts, in particular to a wear-resistant and dustproof notebook computer keyboard panel baking varnish part.
Background
The keyboard panel of the notebook computer is one of four plastic parts of the notebook computer. Most of the existing keyboard panels are similar and simple in structure, single in functionality and lack of innovation, and in the use process of the keyboard, dust, scraps and other sundries can easily fall into gaps between keys of the keyboard and the keyboard panel, so that the operation and the use of the keyboard are affected.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a wear-resistant and dust-proof baking varnish for a keyboard panel of a notebook computer.
In order to achieve the purpose, the invention adopts the technical scheme that: a wear-resistant dustproof baking varnish piece for a keyboard panel of a notebook computer comprises a keyboard panel body, wherein a first key slot hole and a second key slot hole are formed in the keyboard panel body, the space size of the first key slot hole is larger than that of the second key slot hole, the second key slot hole is used for installing a cursor moving key, the first keyboard slot hole is used for installing other keys except the cursor moving key, and the second key slot hole is formed in the lower end of the right side of the keyboard panel body; the keyboard panel body is provided with a power supply key hole at the upper end and a touch pad slotted hole at the lower end; the positions of the first key slot hole and the second key slot hole are both provided with dustproof panels, and the dustproof panels are provided with keyboard key holes; the surface of the keyboard panel body is provided with a wear-resistant water-based baking varnish coating, and the wear-resistant water-based baking varnish coating is roll-coated on the surface of the keyboard panel body through a roll coating process.
Preferably, the keyboard panel body upper end seted up the display installation slotted hole, the display installation slotted hole be equipped with two and the symmetry set up in the keyboard panel body upper end left and right sides.
Preferably, the upper end of the keyboard panel body can be provided with a heat dissipation window hole, and a plurality of heat dissipation small holes are formed in the heat dissipation window hole. The heat dissipation effect is improved.
Preferably, the two heat dissipation window holes are symmetrically arranged on the left side and the right side of the upper end of the keyboard panel body and are positioned on the inner side of the display installation slotted hole. The heat dissipation effect is improved.
Preferably, the left end side of the keyboard panel body is provided with an LED panel lamp mounting notch, and the LED panel lamp mounting notch is used for accommodating and mounting the LED panel lamp.
Preferably, the lower end of the LED panel lamp is connected to the side wall of the lower end of the LED panel lamp mounting groove, and the upper end of the LED panel lamp can rotate upwards by 90 degrees to realize illumination. The switching installation is the rotating shaft switching installation in the prior art. The function is improved, meanwhile, the attractiveness is increased, and a computer and keyboard keys can be conveniently used in light teaching dark places.
Preferably, the left side of the lower end of the keyboard panel body is provided with a plurality of signal lamp slot holes, and the signal lamp slot holes comprise a power switch signal slot hole, a battery signal slot hole, a number key opening signal slot hole and a function key opening signal slot hole. The power supply and the battery state and the opening state of the function keys and the number keys are convenient to observe.
Preferably, the thickness of the wear-resistant water-based baking varnish coating is 30-50 μm.
Preferably, the wear-resistant water-based baking paint coating comprises the following components in parts by weight: 20-30 parts of waterborne epoxy modified acrylic resin, 30-40 parts of fluorosilicone modified acrylic resin, 6-10 parts of nano silicon dioxide, 6-10 parts of titanium dioxide, 6-10 parts of talcum powder, 1-2 parts of polyacrylate waterborne dispersant, 1-2 parts of associative polyurethane thickener, 0.5-1.5 parts of polysiloxane-polyether copolymer defoamer, 4-6 parts of composite nano antiwear agent, 4-6 parts of carbon fiber and 30-40 parts of deionized water; the preparation method of the composite nano antiwear agent comprises the steps of adding nano molybdenum disulfide, mercaptoethylamine and water into a beaker according to the weight ratio of 1:2:4, carrying out ultrasonic oscillation dispersion for 8-12h, wherein the ultrasonic frequency is 40-50KHz, then centrifuging for 15-20min, the centrifugal rotating speed is 3000-4000r/min, collecting precipitates, cleaning for 3-4 times, and drying in a constant-temperature drying box at 80-90 ℃ for 1-2h to obtain modified molybdenum disulfide; adding the modified molybdenum disulfide, maleic anhydride and absolute ethyl alcohol into a round-bottom flask according to the weight ratio of 1:2:4, stirring in a water bath for reaction for 2-3h, wherein the water bath temperature is 55-65 ℃, then carrying out centrifugal treatment for 15-20min, and carrying out centrifugal rotation at the speed of 3000-; mixing nano boron nitride and deionized water according to the weight ratio of 15-25 g: adding 200ml of 150-; adding the maleic anhydride grafted molybdenum disulfide, the mixed solution and water into a dispersion machine according to the weight percentage ratio of 20-30:6-10:15-25, stirring and dispersing for 15-25min, and transferring the mixture into a constant temperature drying box to dry for 3-5h at the temperature of 85-95 ℃ to obtain the composite nano antiwear agent.
Preferably, the preparation method of the wear-resistant water-based baking varnish coating comprises the following steps:
(1) mixing perfluoroalkyl ethyl alcohol and aromatic diisocyanate according to the weight ratio of 1:1-2, adding dibutyltin dilaurate accounting for 0.5-1.5% of the total amount of a reaction liquid for reaction for 2-12h, adding polydimethylsiloxane accounting for 1-1.5% of the total amount of a reaction system after the reaction temperature is 30-50 ℃ for reaction for 6-8h, adding acrylic ester accounting for 2-5% of the total amount of the reaction system and dibutyltin dilaurate accounting for 1-2% of the total amount of the reaction system for reaction for 4-16h, and obtaining fluorine-silicon modified acrylic ester at the reaction temperature of 40-60 ℃, then adding acrylic ester accounting for 2-4% of the total amount of the reaction system, heating to the system temperature of 50-70 ℃, dropwise adding azo initiator accounting for 1-2% of the total amount of the reaction system, and reacting for 2-8h to obtain the fluorosilicone modified acrylic resin;
(2) mixing alkylphenol polyoxyethylene and water according to the weight portion ratio of 0.3-0.5: adding 75-85 parts of methyl methacrylate, 40-50 parts of butyl acrylate, 30-40 parts of glycidyl acrylate and 20-30 parts of styrene into a reaction kettle, uniformly mixing, and then dropwise adding into the reaction kettle for 2-3 hours, dropwise adding an initiator solution into the reaction kettle every 30min during the dropwise adding process, preserving the temperature for 2-3 hours after the dropwise adding is finished, and cooling to room temperature, wherein the weight part of the dropwise added initiator solution is 1-3 parts, thus obtaining the waterborne epoxy modified acrylic resin;
(3) mixing and stirring nano silicon dioxide, titanium dioxide, talcum powder, polyacrylate aqueous dispersant, associative polyurethane thickener, polysiloxane-polyether copolymer defoamer, composite nano antiwear agent and deionized water uniformly in a stirring kettle, ball-milling for 1-2h by a ball mill at the ball-milling rotation speed of 1200-1600r/min, adding the fluorine-silicon modified acrylic resin prepared in the formula (1) and the aqueous epoxy modified acrylic resin prepared in the step (2), continuing ball-milling for 30-50min, filtering to obtain slurry with the fineness of 100-120 meshes, adding the slurry into the stirring kettle, stirring at a low speed, adding the carbon fiber in the formula and stirring uniformly.
The invention has the beneficial effects that: according to the wear-resistant dustproof baking varnish piece for the keyboard panel of the notebook computer, disclosed by the invention, the key slot hole is divided into a cursor movement key area and other key areas, and the cursor movement key area is arranged at the lower end of the right side of the keyboard panel body, so that the operation is convenient, and meanwhile, the aesthetic feeling is increased; the LED panel lamp mounting groove hole is formed in the upper portion of the left side of the panel body, so that the keyboard can be operated conveniently when light is dark, and the use convenience and the functionality are improved; the arrangement of the heat dissipation window and the heat dissipation small holes improves the heat dissipation effect; the wear-resistant water-based baking varnish coating increases the wear resistance and prolongs the service life; the dustproof panel improves the dustproof performance; compared with a spraying process, the roller coating process is quick-drying and formed, the utilization rate reaches over 90 percent, volatilization and waste are reduced, and meanwhile, water is used as a solvent, so that the roller coating process is environment-friendly, strong in adhesive force, and good in creamy yellow denaturation, chemical corrosion resistance and wear resistance; the preparation process is simple, the cost is low, and the environment-friendly, nontoxic and pollution-free effects are achieved; the coating formed on the surface of the keyboard panel body by the wear-resistant water-based baking paint has the adhesive force of 0 grade, the hardness of more than 1H and the water resistance of more than 250H.
Drawings
FIG. 1 is a schematic view of an LED panel light of the present invention in use;
fig. 2 is a schematic view of the overall structure of the present invention.
The keyboard comprises a keyboard panel body, a first key slot hole, a second key slot hole, a power supply key hole, a display mounting slot hole, a touch panel mounting slot hole, a heat dissipation window hole, a heat dissipation small hole, a Light Emitting Diode (LED) panel lamp mounting notch, a light emitting diode (LED.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, a wear-resistant and dust-proof baking finish for a keyboard panel of a notebook computer comprises a keyboard panel body, wherein a first key slot hole and a second key slot hole 2 are formed in the keyboard body 1, the space size of the first key slot hole 2 is larger than that of the second key slot hole 3, the second key slot hole 3 is used for installing a cursor moving key, the first keyboard slot hole 2 is used for installing other keys except for the cursor moving key, and the second key slot hole 3 is formed in the lower end of the right side of the keyboard panel body 1; the keyboard panel body 1 is provided with a power supply key hole 4 at the upper end and a touch pad slotted hole 6 at the lower end; the first key slot 2 and the second key slot 3 are provided with dustproof panels (not shown); the surface of the keyboard panel body 1 is provided with a wear-resistant water-based baking paint coating (not shown), and the wear-resistant water-based baking paint coating (not shown) is roll-coated on the surface of the keyboard panel body 1 through a roll coating process.
The keyboard panel comprises a keyboard panel body 1 and is characterized in that the upper end of the keyboard panel body 1 is provided with two display mounting slotted holes 5, and the two display mounting slotted holes 5 are symmetrically arranged on the left side and the right side of the upper end of the keyboard panel body 1.
The upper end of the keyboard panel body 1 can be provided with a heat dissipation window hole 7, and a plurality of heat dissipation small holes 8 are formed in the heat dissipation window hole 7. The heat dissipation effect is improved.
The two heat dissipation window holes 7 are symmetrically arranged on the left side and the right side of the upper end of the keyboard panel body 1 and are positioned on the inner side of the display installation slot hole 5. The heat dissipation effect is improved.
The keyboard panel body 1 left end side seted up an LED panel light installation notch 9, LED panel light installation notch 9 be used for the holding to install LED panel light 10.
The lower end of the LED panel lamp 10 is connected to the side wall of the lower end of the LED panel lamp mounting groove opening 9 in a rotating mode, and the upper end of the LED panel lamp 10 can rotate upwards by 90 degrees to achieve lighting. The switching installation is the rotating shaft switching installation in the prior art. The function is improved, meanwhile, the attractiveness is increased, and a computer and keyboard keys can be conveniently used in light teaching dark places.
The keyboard panel comprises a keyboard panel body 1, and is characterized in that a plurality of signal lamp slot holes 11 are formed in the left side of the lower end of the keyboard panel body 1, the signal lamp slot holes 11 comprise a power switch signal slot hole, a battery signal slot hole, a number key starting signal slot hole and a function key starting signal slot hole, and the signal lamp slot holes 11 are distributed randomly in sequence. The power supply and the battery state and the opening state of the function keys and the number keys are convenient to observe.
Example 1
The thickness of the wear-resistant water-based baking varnish coating is 30 mu m.
The wear-resistant water-based baking varnish coating comprises the following components in parts by weight: 20 parts of waterborne epoxy modified acrylic resin, 30 parts of fluorosilicone modified acrylic resin, 6 parts of nano silicon dioxide, 6 parts of titanium dioxide, 6 parts of talcum powder, 1 part of polyacrylate waterborne dispersant, 1 part of associative polyurethane thickener, 0.5 part of polysiloxane-polyether copolymer defoamer, 4 parts of composite nano antiwear agent, 4 parts of carbon fiber and 30 parts of deionized water; the preparation method of the composite nano antiwear agent comprises the steps of adding nano molybdenum disulfide, mercaptoethylamine and water into a beaker according to the weight ratio of 1:2:4, carrying out ultrasonic oscillation dispersion for 8 hours, carrying out ultrasonic frequency of 40KHz, centrifuging for 15 minutes, carrying out centrifugation at the rotating speed of 3000r/min, collecting precipitates, cleaning for 3 times, and drying in a constant-temperature drying box at the temperature of 80 ℃ for 1 hour to obtain modified molybdenum disulfide; adding the modified molybdenum disulfide, maleic anhydride and absolute ethyl alcohol into a round-bottom flask according to the weight ratio of 1:2:4, stirring in a water bath for reaction for 2 hours, wherein the water bath temperature is 55 ℃, then carrying out centrifugal treatment for 15min, and carrying out centrifugal rotation at the speed of 3000r/min, collecting precipitates, and washing for 2 times by using absolute ethyl alcohol to obtain maleic anhydride grafted molybdenum disulfide; mixing nano boron nitride and deionized water according to the weight ratio of 15 g: adding 200ml of 150-; adding the maleic anhydride grafted molybdenum disulfide, the mixed solution and water into a dispersion machine according to the weight ratio of 20:6:15, stirring and dispersing for 15min, and transferring the mixture into a constant-temperature drying box to dry for 3h at 85 ℃ to obtain the composite nano antiwear agent.
The preparation method of the wear-resistant water-based baking varnish coating comprises the following steps:
(1) mixing perfluoroalkyl ethyl alcohol and aromatic diisocyanate according to a weight ratio of 1:1, adding dibutyltin dilaurate accounting for 0% of the total amount of a reaction liquid to react for 2 hours, adding polydimethylsiloxane accounting for 1% of the total amount of a reaction system after the reaction temperature is 30 ℃ to react for 6 hours, adding acrylic ester accounting for 2% of the total amount of the reaction system and dibutyltin dilaurate accounting for 1% of the total amount of the reaction system to react for 4 hours, wherein the reaction temperature is 40 ℃, obtaining fluorosilicone modified acrylic ester, then adding acrylic ester accounting for 2% of the total amount of the reaction system, heating to the system temperature of 50 ℃, and dropwise adding an azo initiator accounting for 1% of the total amount of the reaction system to react for 2 hours to obtain fluorosilicone modified acrylic resin;
(2) mixing alkylphenol polyoxyethylene and water according to the weight portion ratio of 0.3: adding 75 parts of the initiator solution into a reaction kettle, heating to 75 ℃ for reaction, uniformly mixing 50 parts of methyl methacrylate, 40 parts of butyl acrylate, 30 parts of glycidyl acrylate and 20 parts of styrene, then dropwise adding the mixture into the reaction kettle, finishing dropwise adding for 2 hours, dropwise adding the initiator solution into the reaction kettle every 30min in the dropwise adding process, preserving the temperature for 2 hours after completing dropwise adding, and cooling to room temperature, wherein the weight part of the dropwise added initiator solution is 1 part, thus obtaining the waterborne epoxy modified acrylic resin;
(3) mixing and stirring nano silicon dioxide, titanium dioxide, talcum powder, polyacrylate aqueous dispersant, associative polyurethane thickener, polysiloxane-polyether copolymer defoamer, composite nano antiwear agent and deionized water uniformly in a stirring kettle according to the formula amount, then ball-milling for 1h by a ball mill at the ball-milling rotating speed of 1200r/min, then adding the fluorine-silicon modified acrylic resin prepared in the step (1) and the aqueous epoxy modified acrylic resin prepared in the step (2) according to the formula amount, continuing ball-milling for 30min, filtering to obtain slurry with the fineness of 100 meshes, adding the slurry into the stirring kettle, stirring at a low speed, adding the carbon fiber according to the formula amount, and stirring uniformly.
Example 2
The thickness of the wear-resistant water-based baking varnish coating is 50 mu m.
The wear-resistant water-based baking varnish coating comprises the following components in parts by weight: 30 parts of waterborne epoxy modified acrylic resin, 40 parts of fluorosilicone modified acrylic resin, 10 parts of nano silicon dioxide, 10 parts of titanium dioxide, 10 parts of talcum powder, 2 parts of polyacrylate waterborne dispersant, 2 parts of associated polyurethane thickener, 1.5 parts of polysiloxane-polyether copolymer defoamer, 6 parts of composite nano antiwear agent, 6 parts of carbon fiber and 40 parts of deionized water; the preparation method of the composite nano antiwear agent comprises the steps of adding nano molybdenum disulfide, mercaptoethylamine and water into a beaker according to the weight ratio of 1:2:4, carrying out ultrasonic oscillation dispersion for 12 hours, wherein the ultrasonic frequency is 50KHz, then centrifuging for 20 minutes, the centrifugal rotating speed is 4000r/min, collecting and cleaning precipitates for 4 times, and drying in a constant-temperature drying box for 2 hours at 90 ℃ to obtain modified molybdenum disulfide; adding the modified molybdenum disulfide, maleic anhydride and absolute ethyl alcohol into a round-bottom flask according to the weight ratio of 1:2:4, stirring in a water bath for reaction for 3 hours, carrying out centrifugal treatment for 20 minutes at the water bath temperature of 65 ℃, and washing precipitates for 3 times by using the absolute ethyl alcohol to obtain maleic anhydride grafted molybdenum disulfide; mixing nano boron nitride and deionized water according to a weight ratio of 25 g: adding 200ml of the mixture into a beaker, adding 3 percent of silane coupling agent and 5 percent of monomethyl adipate by weight, and stirring to react for 45min to obtain a mixed solution; adding the maleic anhydride grafted molybdenum disulfide, the mixed solution and water into a dispersion machine according to the weight percentage ratio of 30:10:25, stirring and dispersing for 25min, and transferring the mixture into a constant-temperature drying oven to dry for 5h at 95 ℃ to obtain the composite nano antiwear agent.
The preparation method of the wear-resistant water-based baking varnish coating comprises the following steps:
(1) mixing perfluoroalkyl ethyl alcohol and aromatic diisocyanate according to a weight ratio of 1:2, adding dibutyltin dilaurate accounting for 1.5% of the total amount of a reaction liquid to react for 12 hours, adding polydimethylsiloxane accounting for 1.5% of the total amount of a reaction system after the reaction temperature is 50 ℃ to react for 8 hours, adding acrylic ester accounting for 5% of the total amount of the reaction system and dibutyltin dilaurate accounting for 2% of the total amount of the reaction system to react for 16 hours at the reaction temperature of 60 ℃ to obtain fluorosilicone modified acrylic ester, adding acrylic ester accounting for 4% of the total amount of the reaction system to heat to 70 ℃, and dropwise adding azo initiator accounting for 2% of the total amount of the reaction system to react for 8 hours to obtain fluorosilicone modified acrylic resin;
(2) mixing alkylphenol polyoxyethylene and water according to the weight portion ratio of 0.5: adding 85 parts of the initiator solution into a reaction kettle, heating the mixture to 80 ℃ for reaction, uniformly mixing 60 parts of methyl methacrylate, 50 parts of butyl acrylate, 40 parts of glycidyl acrylate and 30 parts of styrene, then dropwise adding the mixture into the reaction kettle, finishing dropwise adding the mixture for 3 hours, dropwise adding the initiator solution into the reaction kettle every 30min in the dropwise adding process, keeping the temperature for 3 hours after the dropwise adding is finished, and cooling the mixture to room temperature, wherein the weight part of the dropwise added initiator solution is 3 parts, thus obtaining the waterborne epoxy modified acrylic resin;
(3) mixing and stirring nano silicon dioxide, titanium dioxide, talcum powder, polyacrylate aqueous dispersant, associative polyurethane thickener, polysiloxane-polyether copolymer defoamer, composite nano antiwear agent and deionized water uniformly in a stirring kettle according to the formula ratio, ball-milling for 2 hours by a ball mill at the ball-milling rotating speed of 1600r/min, adding the fluorine-silicon modified acrylic resin prepared in the step (1) and the aqueous epoxy modified acrylic resin prepared in the step (2) according to the formula ratio, continuing ball-milling for 50 minutes, filtering to obtain slurry with the fineness of 120 meshes, adding the slurry into the stirring kettle, stirring at a low speed, adding the carbon fiber according to the formula ratio, and stirring uniformly.
Example 3
The thickness of the wear-resistant water-based baking varnish coating is 40 mu m.
Preferably, the wear-resistant water-based baking paint coating comprises the following components in parts by weight: 25 parts of waterborne epoxy modified acrylic resin, 35 parts of fluorosilicone modified acrylic resin, 8 parts of nano silicon dioxide, 8 parts of titanium dioxide, 8 parts of talcum powder, 1.5 parts of polyacrylate waterborne dispersant, 1.5 parts of associated polyurethane thickener, 1 part of polysiloxane-polyether copolymer defoamer, 5 parts of composite nano antiwear agent, 5 parts of carbon fiber and 35 parts of deionized water; the preparation method of the composite nano antiwear agent comprises the steps of adding nano molybdenum disulfide, mercaptoethylamine and water into a beaker according to the weight ratio of 1:2:4, carrying out ultrasonic oscillation dispersion for 10 hours, wherein the ultrasonic frequency is 45KHz, then centrifuging for 18 minutes, the centrifugal rotating speed is 3500r/min, collecting and cleaning precipitates for 3 times, and drying in a constant-temperature drying box at 85 ℃ for 1.5 hours to obtain modified molybdenum disulfide; adding the modified molybdenum disulfide, maleic anhydride and absolute ethyl alcohol into a round-bottom flask according to the weight ratio of 1:2:4, stirring in a water bath for reaction for 2.5 hours, wherein the temperature of the water bath is 60 ℃, then carrying out centrifugal treatment for 18min, and carrying out centrifugal rotation speed of 3500r/min, collecting precipitates, and washing the precipitates for 3 times by using absolute ethyl alcohol to obtain maleic anhydride grafted molybdenum disulfide; mixing nano boron nitride and deionized water according to the weight ratio of 20 g: adding 180ml of the mixture into a beaker, adding a silane coupling agent accounting for 2.5 percent of the total weight of the mixture and monomethyl adipate accounting for 4 percent of the total weight of the mixture, and stirring the mixture to react for 40min to obtain a mixed solution; adding the maleic anhydride grafted molybdenum disulfide, the mixed solution and water into a dispersion machine according to the weight ratio of 25:8:20, stirring and dispersing for 20min, and transferring the mixture into a constant-temperature drying box to dry for 4h at 90 ℃ to obtain the composite nano antiwear agent.
The preparation method of the wear-resistant water-based baking varnish coating comprises the following steps:
(1) mixing perfluoroalkyl ethyl alcohol and aromatic diisocyanate according to a weight ratio of 1:1.5, adding dibutyltin dilaurate accounting for 1% of the total amount of a reaction liquid for reaction for 7 hours, adding polydimethylsiloxane accounting for 1.2% of the total amount of a reaction system after the reaction temperature is 40 ℃ for reaction for 7 hours, adding acrylic ester accounting for 3.5% of the total amount of the reaction system and dibutyltin dilaurate accounting for 1.5% of the total amount of the reaction system for reaction for 10 hours at the reaction temperature of 50 ℃ to obtain fluorosilicone modified acrylic ester, then adding acrylic ester accounting for 3% of the total amount of the reaction system, heating to the system temperature of 60 ℃, and dropwise adding an azo initiator accounting for 1.5% of the total amount of the reaction system for reaction for 5 hours to obtain fluorosilicone modified acrylic resin;
(2) mixing alkylphenol polyoxyethylene and water according to the weight portion ratio of 0.4: adding 80 parts of the initiator solution into a reaction kettle, heating to 78 ℃ for reaction, uniformly mixing 55 parts of methyl methacrylate, 45 parts of butyl acrylate, 35 parts of glycidyl acrylate and 25 parts of styrene, then dropwise adding the mixture into the reaction kettle, finishing dropwise adding within 2.5h, dropwise adding the initiator solution into the reaction kettle every 30min in the dropwise adding process, preserving heat for 2.5h after completing dropwise adding, and cooling to room temperature, wherein the weight part of the dropwise added initiator solution is 2 parts, thus obtaining the waterborne epoxy modified acrylic resin;
(3) mixing and stirring nano silicon dioxide, titanium dioxide, talcum powder, polyacrylate aqueous dispersant, associative polyurethane thickener, polysiloxane-polyether copolymer defoamer, composite nano antiwear agent and deionized water uniformly in a stirring kettle according to the formula ratio, ball-milling for 1.5h by a ball mill at the ball-milling rotating speed of 1400r/min, adding the fluorine-silicon modified acrylic resin prepared in the step (1) and the aqueous epoxy modified acrylic resin prepared in the step (2) according to the formula ratio, continuously ball-milling for 40min, filtering to obtain slurry with the fineness of 110 meshes, adding the slurry into the stirring kettle, stirring at a low speed, adding the carbon fiber according to the formula ratio, and stirring uniformly.
The abrasion resistant aqueous baking varnish performance parameters described in examples 1-3 were tested as follows:
it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited. Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the present invention.
Claims (6)
1. A wear-resistant dustproof baking varnish piece for a keyboard panel of a notebook computer is characterized by comprising a keyboard panel body, wherein a first key slot hole and a second key slot hole are formed in the keyboard panel body, the space size of the first key slot hole is larger than that of the second key slot hole, the second key slot hole is used for installing a cursor moving key, the first keyboard slot hole is used for installing other keys except the cursor moving key, and the second key slot hole is formed in the lower end of the right side of the keyboard panel body; the keyboard panel body is provided with a power supply key hole at the upper end and a touch pad slotted hole at the lower end; the positions of the first key slot hole and the second key slot hole are both provided with dustproof panels, and the dustproof panels are provided with keyboard key holes; the surface of the keyboard panel body is provided with a wear-resistant water-based baking paint coating, and the wear-resistant water-based baking paint coating is roll-coated on the surface of the keyboard panel body through a roll coating process;
the left end side of the keyboard panel body is provided with an LED panel lamp mounting notch, and the LED panel lamp mounting notch is used for accommodating and mounting an LED panel lamp; the lower end of the LED panel lamp is connected to the side wall of the lower end of the LED panel lamp mounting notch in a switching mode, and the upper end of the LED panel lamp can rotate upwards by 90 degrees to realize illumination;
the wear-resistant water-based baking varnish coating comprises the following components in parts by weight: 20-30 parts of waterborne epoxy modified acrylic resin, 30-40 parts of fluorosilicone modified acrylic resin, 6-10 parts of nano silicon dioxide, 6-10 parts of titanium dioxide, 6-10 parts of talcum powder, 1-2 parts of polyacrylate waterborne dispersant, 1-2 parts of associative polyurethane thickener, 0.5-1.5 parts of polysiloxane-polyether copolymer defoamer, 4-6 parts of composite nano antiwear agent, 4-6 parts of carbon fiber and 30-40 parts of deionized water; the preparation method of the composite nano antiwear agent comprises the steps of adding nano molybdenum disulfide, mercaptoethylamine and water into a beaker according to the weight ratio of 1:2:4, carrying out ultrasonic oscillation dispersion for 8-12h, wherein the ultrasonic frequency is 40-50KHz, then centrifuging for 15-20min, the centrifugal rotating speed is 3000-4000r/min, collecting precipitates, cleaning for 3-4 times, and drying in a constant-temperature drying box at 80-90 ℃ for 1-2h to obtain modified molybdenum disulfide; adding the modified molybdenum disulfide, maleic anhydride and absolute ethyl alcohol into a round-bottom flask according to the weight ratio of 1:2:4, stirring in a water bath for reaction for 2-3h, wherein the water bath temperature is 55-65 ℃, then carrying out centrifugal treatment for 15-20min, and carrying out centrifugal rotation at the speed of 3000-; mixing nano boron nitride and deionized water according to the weight ratio of 15-25 g: adding 200ml of 150-; adding the maleic anhydride grafted molybdenum disulfide, the mixed solution and water into a dispersion machine according to the weight percentage ratio of 20-30:6-10:15-25, stirring and dispersing for 15-25min, and transferring the mixture into a constant temperature drying box to dry for 3-5h at the temperature of 85-95 ℃ to obtain the composite nano antiwear agent;
the preparation method of the wear-resistant water-based baking varnish coating comprises the following steps:
(1) mixing perfluoroalkyl ethyl alcohol and aromatic diisocyanate according to the weight ratio of 1:1-2, adding dibutyltin dilaurate accounting for 0.5-1.5% of the total amount of a reaction liquid for reaction for 2-12h, adding polydimethylsiloxane accounting for 1-1.5% of the total amount of a reaction system after the reaction temperature is 30-50 ℃ for reaction for 6-8h, adding acrylic ester accounting for 2-5% of the total amount of the reaction system and dibutyltin dilaurate accounting for 1-2% of the total amount of the reaction system for reaction for 4-16h, and obtaining fluorine-silicon modified acrylic ester at the reaction temperature of 40-60 ℃, then adding acrylic ester accounting for 2-4% of the total amount of the reaction system, heating to the system temperature of 50-70 ℃, dropwise adding azo initiator accounting for 1-2% of the total amount of the reaction system, and reacting for 2-8h to obtain the fluorosilicone modified acrylic resin;
(2) mixing alkylphenol polyoxyethylene and water according to the weight portion ratio of 0.3-0.5: adding 75-85 parts of methyl methacrylate, 40-50 parts of butyl acrylate, 30-40 parts of glycidyl acrylate and 20-30 parts of styrene into a reaction kettle, uniformly mixing, and then dropwise adding into the reaction kettle for 2-3 hours, dropwise adding an initiator solution into the reaction kettle every 30min during the dropwise adding process, preserving the temperature for 2-3 hours after the dropwise adding is finished, and cooling to room temperature, wherein the weight part of the dropwise added initiator solution is 1-3 parts, thus obtaining the waterborne epoxy modified acrylic resin;
(3) mixing and stirring nano silicon dioxide, titanium dioxide, talcum powder, polyacrylate aqueous dispersant, associative polyurethane thickener, polysiloxane-polyether copolymer defoamer, composite nano antiwear agent and deionized water uniformly in a stirring kettle, ball-milling for 1-2h by a ball mill at the ball-milling rotation speed of 1200-1600r/min, adding the fluorine-silicon modified acrylic resin prepared in the formula (1) and the aqueous epoxy modified acrylic resin prepared in the step (2), continuing ball-milling for 30-50min, filtering to obtain slurry with the fineness of 100-120 meshes, adding the slurry into the stirring kettle, stirring at a low speed, adding the carbon fiber in the formula and stirring uniformly.
2. The wear-resistant and dust-proof baking finish piece for the keyboard panel of the notebook computer as claimed in claim 1, wherein two display mounting slots are formed in the upper end of the keyboard panel body and symmetrically arranged on the left side and the right side of the upper end of the keyboard panel body.
3. The wear-resistant and dust-proof baking varnish piece for the keyboard panel of the notebook computer as claimed in claim 1, wherein the upper end of the keyboard panel body is provided with a heat dissipation window hole, and a plurality of small heat dissipation holes are formed in the heat dissipation window hole.
4. The wear-resistant and dust-proof baking finish piece for the keyboard panel of the notebook computer as claimed in claim 3, wherein two heat dissipation window holes are symmetrically arranged on the left and right sides of the upper end of the keyboard panel body and are positioned inside the display mounting slot hole.
5. The wear-resistant and dust-proof baking finish piece for the keyboard panel of the notebook computer according to claim 1, wherein a plurality of signal lamp slots are formed in the left side of the lower end of the keyboard panel body, and the signal lamp slots comprise a power switch signal slot, a battery signal slot, a number key opening signal slot and a function key opening signal slot.
6. The wear-resistant and dust-proof baking varnish piece for the keyboard panel of the notebook computer as claimed in claim 1, wherein the thickness of the wear-resistant water-based baking varnish coating is 30-50 μm.
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