CN109094164B - Luminous plate and preparation method thereof - Google Patents
Luminous plate and preparation method thereof Download PDFInfo
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- CN109094164B CN109094164B CN201810617489.5A CN201810617489A CN109094164B CN 109094164 B CN109094164 B CN 109094164B CN 201810617489 A CN201810617489 A CN 201810617489A CN 109094164 B CN109094164 B CN 109094164B
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- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/38—Layered products comprising a layer of synthetic resin comprising epoxy resins
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/0073—Optical laminates
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- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
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- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
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- B32—LAYERED PRODUCTS
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- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/26—Layered products comprising a layer of synthetic resin characterised by the use of special additives using curing agents
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- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/42—Layered products comprising a layer of synthetic resin comprising condensation resins of aldehydes, e.g. with phenols, ureas or melamines
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
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- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B9/045—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
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- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
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Abstract
The luminescent plate comprises the luminescent surface layer and the substrate layer, is prepared by compounding the luminescent surface layer and the substrate layer which are obtained by solidifying the raw materials in corresponding parts by weight, has moderate strength and toughness, can be cut into luminescent products with any size and any shape, and has stable luminescent brightness and prolonged luminescent time; the weather resistance, the ageing resistance and the like of the light-emitting plate are further improved, and the light-emitting plate is not easy to turn yellow when used outdoors, so that the appearance is influenced. According to the preparation method of the luminescent plate, a corresponding preparation method is formulated according to the raw material composition of the luminescent surface layer and the substrate layer, so that the components are uniformly mixed, the cured luminescent surface layer and the cured substrate layer are tightly combined, and the performance is stable.
Description
Technical Field
The invention belongs to the technical field of materials, and particularly relates to a luminescent plate and a preparation method thereof.
Background
The luminous plate is a plate product made of photoluminescent materials, resins and other materials, can be used for displaying signs and marks of ships, vehicles, subways, passages, fire fighting and the like, can be made into various signs and labels by screen printing, and is also used for decorating and decorating suspended ceilings, wall walls, skirting lines and the like in rooms. The material can absorb various visible lights to realize a light-emitting function, particularly has strong absorption capacity on short-wave visible lights below 450nm, and can be recycled for many times. The luminous plate presents the appearance color of itself in bright place, sends the light of different colors, different luminance in dark place, presents good low emergency lighting, instruction sign and decorates beautification effect. By being cut into different shapes, the novel fire-fighting protective plate has prominent effects on building decoration, transportation tools, military facilities, traffic signs and fire-fighting emergency systems.
However, most of the existing luminescent plates made of resin materials have good effect when used indoors, the luminescent brightness and the luminescent duration of the luminescent plate materials can not be ensured when used outdoors, and the weather resistance and the aging resistance of the luminescent plate materials can not withstand the harsh conditions of outdoor use.
Disclosure of Invention
In view of the above problems, it is an object of the present invention to provide a light emitting panel which can maintain stable luminance and duration of light emission regardless of whether it is used indoors or outdoors, and which is excellent in weather resistance and aging resistance when used outdoors.
It is still another object of the present invention to provide a method for manufacturing the light emitting panel.
The technical scheme of the invention is as follows:
the invention provides a luminescent plate, which comprises a luminescent surface layer and a substrate layer,
the luminous surface layer comprises the following raw material components in percentage by weight:
25-39% of polyurea resin, 0.07-0.12% of light stabilizer, 0.038-0.10% of ultraviolet absorber, 0.2-0.4% of defoaming agent, 0-4% of anti-settling agent, 0-4% of diluent, 26.27-50% of luminescent powder and 18.75-29.25% of polyurea curing agent;
the substrate layer comprises the following raw material components in percentage by weight:
38-42% of epoxy resin, 47-50% of high-molecular-grade calcium carbonate powder or talcum powder, 2-3% of titanium dioxide, 0.05-0.08% of ultraviolet absorbent, 0.1-0.2% of defoaming agent and 8.4-9.5% of epoxy curing agent.
The high molecular calcium carbonate powder is superfine powder with calcium carbonate content over 99% and granularity of 1000 mesh.
The light-emitting panel according to the invention is preferably a light-emitting panel in which the light-emitting surface layer and the substrate layer are composed of raw material components in consideration of the weatherability of the light-emitting panel, the light-emitting property, and the cutting workability of the light-emitting panel,
the luminous surface layer comprises the following raw material components in percentage by weight:
32.64% of polyurea resin, 0.049% of light stabilizer, 0.098% of ultraviolet absorber, 0.326% of defoaming agent, 3.27% of anti-settling agent, diluent: 3.26 percent, luminescent powder 36 percent and polyurea curing agent 24.357 percent,
or
27% of polyurea resin, 0.081% of light stabilizer, 0.0405% of ultraviolet absorber, 0.27% of defoaming agent, 2.7% of anti-settling agent, 2.7% of diluent, 47% of luminescent powder and 20.2085% of polyurea curing agent;
the optimal composition of the raw material components of the substrate layer is different according to the ambient temperature, and the substrate layer comprises the following raw material components in percentage by weight:
in winter or when the ambient temperature is less than 20 ℃, the weight ratio of the epoxy resin to the epoxy curing agent is preferably 4:1, 40.57 percent of epoxy resin, 48.696 percent of talcum powder, 2.44 percent of titanium pigment, 0.06 percent of ultraviolet absorbent, 0.12 percent of defoaming agent and 8.114 percent of epoxy curing agent,
or, in summer or when the environmental temperature is above 20 ℃, the weight ratio of the epoxy resin to the epoxy curing agent is preferably 5:1, 38.948% of the epoxy resin, 48.696% of high-molecular-grade calcium carbonate powder, 2.44% of titanium dioxide, 0.06% of ultraviolet absorbent, 0.12% of defoaming agent and 9.736% of the epoxy curing agent.
According to the luminescent panel of the present invention, the raw material composition of the luminescent surface layer further comprises 2-5.77% of silicate particles of 16-30 mesh. The addition of silicate particles with corresponding particle sizes enhances the wear resistance of the luminescent surface layer and improves the mixing uniformity of raw materials of the luminescent surface layer on the basis of not influencing the flatness of the luminescent plate and the bonding strength of the luminescent surface layer and the substrate layer. The silicate particles referred to in the present invention comprise SiO2And inorganic mineral particles of CaO component.
According to the luminescent plate disclosed by the invention, in the raw material components of the luminescent surface layer, the weight ratio of the polyurea resin to the polyurea curing agent is 1:0.66-0.75, the curing agent is too little, the polyurea resin cannot be cured, the mechanical property of the product is influenced, and the product is soft; if the curing agent is too much, the brittleness of the luminescent plate is increased or the generation of bubbles of the luminescent plate is serious, so that the product quality such as the luminescent performance of the luminescent plate is influenced.
According to the luminescent plate disclosed by the invention, in the raw material components of the substrate layer, the weight ratio of the epoxy resin to the epoxy curing agent is 4-5: 1. Adjusting the weight ratio according to the actual temperature, adjusting the content of the epoxy curing agent to increase when the temperature is high, and adjusting the content of the epoxy curing agent to decrease when the temperature is low: specifically, when the ambient temperature is less than 20 ℃, the weight ratio of the epoxy resin to the epoxy curing agent is 4: 1; when the ambient temperature is above 20 ℃, the weight ratio of the epoxy resin to the epoxy curing agent is 5: 1.
The luminescent plate according to the invention is added with a proper amount of high molecular calcium carbonate powder or talcum powder. The high molecular calcium carbonate powder or talcum powder with corresponding weight percentage is added into the epoxy resin, so that the strength of a substrate is improved, the wear resistance is enhanced, the processing performance of the luminescent plate is improved, the luminescent plate is not limited by patterns or sizes to be processed in later processing, and the luminescent plate can be cut at will.
According to the luminescent panel of the invention, the polyurea resin in the luminescent surface layer raw material is a semi-prepolymer prepared by reacting a RuiAn or RuiOH compound with isocyanate, and the polyurea curing agent is a mixture of the RuiAn resin and a RuiAn chain extender. The polyurea resin enables the weather resistance and the ageing resistance of the luminous surface layer to be excellent, and after the light stabilizer, the ultraviolet absorbent and the luminous powder are added, the luminous surface layer is enabled to be excellent in luminous performance, and the service life of the luminous surface layer is prolonged outdoors.
According to the luminescent panel of the invention, the light stabilizer is a hindered amine light stabilizer HS-508 and/or a hindered amine light stabilizer 292, and the ultraviolet absorber is an ultraviolet absorber UV-1300. The light stabilizer and the ultraviolet absorber are used in combination, so that the aging resistance and the yellowing resistance of the light-emitting surface layer of the light-emitting panel are improved.
The chemical name of the hindered amine light stabilizer HS-508 is 1-methyl-8- (1,2,2,6, 6-pentamethyl-4-piperidine) sebacate; the hindered amine light stabilizer 292 is known under the generic name bis (1,2,2,6, 6-pentamethyl-4-piperidine) sebacate.
UV-1300 is known under the generic name 3- [3- (2-H-benzotriazol-2-yl) -4-hydroxy-5-tert-butylphenyl ] -propionic acid-polyethylene glycol ester.
According to the luminescent plate of the present invention, the diluent is an ester diluent or a ketone diluent. Wherein the ester diluent has the best effect on the properties of the luminescent surface layer. Preferably, the ester diluent is butyl ester or ethyl ester. The ketone diluent is preferably cyclohexanone. Butyl ester is butyl acetate, and ethyl ester is ethyl acetate. The butyl ester or the ethyl ester with the weight percentage is added, so that the components such as the light stabilizer, the ultraviolet absorbent, the luminescent powder, the anti-settling agent and the like can be uniformly mixed with the polyurea resin, and the performance of the cured luminescent surface layer is more uniform.
According to the light-emitting panel of the present invention, the antifoaming agent is an acetic acid and acrylic acid copolymer antifoaming agent, or a silicone antifoaming agent, and more specifically, the acetic acid and acrylic acid copolymer antifoaming agent is a FLOWLEN AC-300 type antifoaming agent from cohnson of japan. The defoaming agent can reduce bubbles generated in the mixing and stirring process of each raw material component and bubbles generated in the curing process, so that surface depressions generated by the bubbles are reduced, most importantly, the service life of the luminescent plate is prolonged, the night luminescent brightness is improved, the luminescent brightness and the service life of each part of the luminescent plate are more uniform, and materials of each part of the luminescent plate can be uniformly utilized to the greatest extent.
According to the light emitting panel of the present invention, the anti-settling agent is a polyamide wax.
The invention provides a preparation method of the luminescent plate, which comprises the following steps:
(1) and (3) curing the luminous surface layer: adding a light stabilizer, an ultraviolet absorber, a defoaming agent, an anti-settling agent and a diluent into polyurea resin for first mixing until all raw materials are uniformly mixed, then adding the luminescent powder for second mixing until the luminescent powder and all the raw materials which are mixed for the first time are uniformly mixed, finally adding a polyurea curing agent for third mixing until the luminescent powder and all the raw materials are uniformly mixed, pouring the uniformly mixed luminescent surface layer raw materials into a mold for curing, and obtaining a cured luminescent surface layer;
(2) curing the substrate layer: adding titanium dioxide, an ultraviolet absorbent, a defoaming agent, high-molecular calcium powder or talcum powder into epoxy resin, uniformly mixing for the first time, adding an epoxy curing agent, uniformly mixing for the second time, uniformly coating the uniformly mixed raw materials of the substrate layer on the cured luminous surface layer, and curing to obtain the luminous panel.
When the raw material of the luminescent surface layer comprises silicate particles, adding luminescent powder in the curing process, mixing and stirring, then adding the silicate particles, mixing and stirring for 1-2min, wherein the stirring speed is 100-2000 r/min;
according to the preparation method of the luminescent plate, the stirring speed and the stirring time are determined according to the difference of the added raw materials and the mixing and stirring conditions in each step: in the step (1), the first mixing and stirring speed is 800-; the luminescent powder is added in the second mixing, the rotating speed is not easy to be too low, and the luminescent powder is easy to be coated in the resin and stirred unevenly due to too low rotating speed; if the stirring speed is too high, the utilization rate of the luminescent powder is low, the luminescent plate cannot achieve the expected luminescent effect, and the stirring speed is determined to be 1000-1200r/min for 5-10 min; adding a curing agent in a third mixing way, wherein the curing agent is easily dispersed unevenly when the stirring speed is too low, the final luminescent surface layer is solidified unevenly, the mechanical properties, the luminescent properties and the like of each part are greatly different, the service life is influenced, and finally, the stirring speed is determined to be 1500-2000r/min for 1-5 min; in the step (2), the first mixing and stirring speed is 200-; the second mixing and stirring speed is 1500-2000r/min, and the time is 1-5 min.
According to the preparation method of the luminescent plate, the luminescent surface layer and the substrate layer are cured uniformly and combined firmly, and the curing process parameters are formulated according to the difference of seasons and specific environment temperatures: when the curing environment temperature is above 20 ℃, the natural curing time is 3-5 hours; when the curing environment temperature is less than 20 ℃, the mixed raw material to be cured is heated to more than 60 ℃, and the curing time is 0.5-1.5 hours.
The invention has the beneficial effects that:
the luminescent plate comprises the luminescent surface layer and the substrate layer, is prepared by compounding the luminescent surface layer and the substrate layer which are obtained by solidifying the raw materials in corresponding parts by weight, has moderate strength and toughness, can be cut into luminescent products with any size and any shape, and has stable luminescent brightness and prolonged luminescent time; the weather resistance, the ageing resistance and the like of the light-emitting plate are further improved, and the light-emitting plate is not easy to turn yellow when used outdoors, so that the appearance is influenced.
According to the preparation method of the luminescent plate, a corresponding preparation method is formulated according to the raw material composition of the luminescent surface layer and the substrate layer, so that the components are uniformly mixed, the cured luminescent surface layer and the cured substrate layer are tightly combined, and the performance is stable.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Example 1
The invention provides a luminescent plate, which comprises a luminescent surface layer and a substrate layer,
the luminous surface layer comprises the following raw material components in percentage by weight:
25% of polyurea resin, 0.12% of light stabilizer, 0.038% of ultraviolet absorber, 0.4% of defoaming agent, 1.692% of anti-settling agent, 4% of diluent, 50% of luminescent powder and 18.75% of polyurea curing agent;
the substrate layer comprises the following raw material components in percentage by weight:
the epoxy resin and the epoxy curing agent are produced in winter, and the weight ratio of the epoxy resin to the epoxy curing agent is 4: 1;
38% of epoxy resin, 3% of titanium dioxide, 0.05% of ultraviolet absorbent, 0.1% of defoaming agent, 49.35% of high-molecular-grade calcium carbonate powder and 9.5% of epoxy curing agent; the polyurea resin is a semi-prepolymer prepared by reacting a RuiAn or RuiOh compound with isocyanate, and the polyurea curing agent is a mixture consisting of RuiAn resin and RuiAn chain extender;
the light stabilizer is a mixture of a hindered amine light stabilizer HS-508 and a hindered amine light stabilizer 292, and the ultraviolet absorbent is an ultraviolet absorbent UV-1300;
the defoaming agent is acetic acid and acrylic acid copolymer defoaming agent, more specifically, FLOWLEN AC-300 type defoaming agent from Kyoho, Japan is selected;
the diluent is butyl ester.
The preparation method of the luminescent plate comprises the following steps:
(1) and (3) curing the luminous surface layer: adding a light stabilizer, an ultraviolet absorbent, a defoaming agent, an anti-settling agent and a diluent into polyurea resin for first mixing, wherein the stirring speed is 800r/min, and the time is 10min until all the raw materials are uniformly mixed; adding the luminescent powder for second mixing at a stirring speed of 1000r/min for 10min until the luminescent powder is uniformly mixed with the raw materials for the first mixing, finally adding a polyurea curing agent for third mixing at a stirring speed of 1500r/min for 5min until the raw material components are uniformly mixed, heating the uniformly mixed luminescent surface layer raw materials to above 60 ℃, pouring the raw materials into a mold for curing for 0.5 hour to obtain a cured luminescent surface layer;
(2) curing the substrate layer: adding titanium dioxide, an ultraviolet absorbent, a defoaming agent and high-molecular-weight calcium carbonate powder into epoxy resin for first mixing, wherein the mixing and stirring speed is 200r/min and the mixing time is 5min, adding an epoxy curing agent after uniform mixing, performing second mixing, the mixing and stirring speed is 1500r/min and the mixing time is 5min to uniform mixing, heating the uniformly mixed base material layer raw material to more than 60 ℃, uniformly coating the uniformly mixed base material layer raw material on a cured luminous surface layer, and curing for 1.5 hours to obtain the luminous panel.
Example 2
The invention provides a luminescent plate, which comprises a luminescent surface layer and a substrate layer,
the luminous surface layer comprises the following raw material components in percentage by weight:
30% of polyurea resin, 0.1% of light stabilizer, 0.06% of ultraviolet absorber, 0.3% of defoaming agent, 4% of anti-settling agent, 45.74% of luminescent powder and 19.8% of polyurea curing agent;
the substrate layer comprises the following raw material components in percentage by weight:
in summer production, the weight ratio of the epoxy resin to the epoxy curing agent is 5: 1;
42 percent of epoxy resin, 2.32 percent of titanium dioxide, 0.08 percent of ultraviolet absorbent, 0.2 percent of defoaming agent, 47 percent of high-molecular-grade calcium carbonate powder and 8.4 percent of epoxy curing agent;
the polyurea resin is a semi-prepolymer prepared by reacting a RuiAn or RuiOh compound with isocyanate, and the polyurea curing agent is a mixture consisting of RuiAn resin and RuiAn chain extender;
the light stabilizer is a mixture of a hindered amine light stabilizer HS-508 and a hindered amine light stabilizer 292, and the ultraviolet absorbent is an ultraviolet absorbent UV-1300;
the defoaming agent is an organic silicon defoaming agent, and more specifically, an EFKA-2035 silicon-containing defoaming agent is selected;
the diluent is ethyl ester;
the anti-settling agent is polyamide wax.
The preparation method of the luminescent plate comprises the following steps:
(1) and (3) curing the luminous surface layer: adding a light stabilizer, an ultraviolet absorbent, a defoaming agent and an anti-settling agent into polyurea resin for first mixing, wherein the stirring speed is 1000r/min, and the time is 5min until all the raw materials are uniformly mixed; adding the luminescent powder for second mixing at a stirring speed of 1200r/min for 5min until the luminescent powder is uniformly mixed with the raw materials for the first mixing, finally adding a polyurea curing agent for third mixing at a stirring speed of 2000r/min for 1min until the raw material components are uniformly mixed, pouring the uniformly mixed luminescent surface layer raw materials into a mold for natural curing for 3 hours to obtain a cured luminescent surface layer;
(2) curing the substrate layer: adding titanium dioxide, an ultraviolet absorbent, a defoaming agent and high-molecular calcium powder into epoxy resin for first mixing at the rotating speed of 1000r/min for 1min, adding an epoxy curing agent after uniform mixing, performing second mixing at the rotating speed of 2000r/min for 1min, uniformly mixing, uniformly coating the uniformly mixed base material layer raw materials on the cured luminous surface layer, and naturally curing for 5 hours to obtain the luminous plate.
Example 3
The invention provides a luminescent plate, which comprises a luminescent surface layer and a substrate layer,
the luminous surface layer comprises the following raw material components in percentage by weight:
39% of polyurea resin, 0.07% of light stabilizer, 0.10% of ultraviolet absorber, 0.2% of defoaming agent, 4% of diluent, 1.11% of anti-settling agent, 26.27% of luminescent powder and 29.25% of polyurea curing agent;
the substrate layer comprises the following raw material components in percentage by weight:
the environment temperature is about 18 ℃, and the weight ratio of the epoxy resin to the epoxy curing agent is 4.1: 1;
38.44% of epoxy resin, 2% of titanium dioxide, 0.06% of ultraviolet absorbent, 0.1% of defoaming agent, 50% of talcum powder and 9.4% of epoxy curing agent;
the polyurea resin is a semi-prepolymer prepared by reacting a RuiAn or RuiOh compound with isocyanate, and the polyurea curing agent is a mixture consisting of RuiAn resin and RuiAn chain extender;
the light stabilizer is hindered amine light stabilizer HS-508, and the ultraviolet light absorber is ultraviolet light absorber UV-1300;
the defoaming agent is acetic acid and acrylic acid copolymer defoaming agent, more specifically, FLOWLEN AC-300 type defoaming agent from Kyoho, Japan is selected;
the diluent is cyclohexanone;
the anti-settling agent is polyamide wax.
The preparation method of the luminescent plate comprises the following steps:
(1) and (3) curing the luminous surface layer: adding a light stabilizer, an ultraviolet absorbent, a defoaming agent, an anti-settling agent and a diluent into polyurea resin for first mixing, wherein the stirring speed is 900r/min, and the time is 8min until all the raw materials are uniformly mixed; adding the luminescent powder for second mixing at a stirring speed of 1100r/min for 7min until the luminescent powder is uniformly mixed with the raw materials for first mixing, finally adding a polyurea curing agent for third mixing at a stirring speed of 1800r/min for 2min until the raw material components are uniformly mixed, heating the uniformly mixed luminescent surface layer raw materials to above 60 ℃, pouring the raw materials into a mold for curing for 1 hour to obtain a cured luminescent surface layer;
(2) curing the substrate layer: adding titanium dioxide, an ultraviolet absorbent, a defoaming agent and talcum powder into epoxy resin for first mixing, wherein the mixing and stirring speed is 500r/min and the mixing time is 3min, adding an epoxy curing agent after uniform mixing, mixing for the second time, wherein the mixing and stirring speed is 1800r/min and the mixing time is 4min to uniform mixing, heating the uniformly mixed base material layer raw material to more than 60 ℃, uniformly coating the uniformly mixed base material layer raw material on a cured luminous surface layer, and curing for 1 hour to obtain the luminous plate.
Example 4
The invention provides a luminescent plate, which comprises a luminescent surface layer and a substrate layer,
the luminous surface layer comprises the following raw material components in percentage by weight:
27% of polyurea resin, 0.081% of light stabilizer, 0.0405% of ultraviolet absorber, 0.27% of defoaming agent, 2.7% of anti-settling agent, 2.7% of diluent, 47% of luminescent powder and 20.2085% of polyurea curing agent;
the substrate layer comprises the following raw material components in percentage by weight:
in winter or when the ambient temperature is less than 20 ℃, the weight ratio of the epoxy resin to the epoxy curing agent is preferably 4:1, the weight ratio of epoxy resin: 38.948%, titanium dioxide: 2.44%, ultraviolet absorber: 0.06 percent, 0.12 percent of defoaming agent, 48.696 percent of high molecular grade calcium carbonate powder and 9.736 percent of epoxy curing agent.
The polyurea resin is a semi-prepolymer prepared by reacting a RuiAn or RuiOh compound with isocyanate, and the polyurea curing agent is a mixture consisting of RuiAn resin and RuiAn chain extender;
the light stabilizer is a mixture of hindered amine light stabilizers 292, and the ultraviolet light absorber is an ultraviolet light absorber UV-1300;
the defoaming agent is acetic acid and acrylic acid copolymer defoaming agent, more specifically, FLOWLEN AC-300 type defoaming agent from Kyoho, Japan is selected;
the diluent is di-n-alkyl phthalate diluent;
the anti-settling agent is polyamide wax.
The preparation method of the luminescent plate comprises the following steps:
(1) and (3) curing the luminous surface layer: adding a light stabilizer, an ultraviolet absorbent, a defoaming agent, an anti-settling agent and a diluent into polyurea resin for first mixing, wherein the stirring speed is 1000r/min, and the time is 5min until all the raw materials are uniformly mixed; adding the luminescent powder for second mixing at a stirring speed of 1200r/min for 6min until the luminescent powder is uniformly mixed with the raw materials for the first mixing, finally adding a polyurea curing agent for third mixing at a stirring speed of 1600r/min for 2min until the raw material components are uniformly mixed, heating the uniformly mixed luminescent surface layer raw materials to more than 60 ℃, pouring the raw materials into a mold for curing for 1 hour to obtain a cured luminescent surface layer;
(2) curing the substrate layer: adding titanium dioxide, an ultraviolet absorbent, a defoaming agent and high-molecular calcium carbonate powder into epoxy resin for first mixing at a mixing and stirring speed of 800r/min for 2min, adding an epoxy curing agent after uniform mixing, performing second mixing at a mixing and stirring speed of 1600r/min for 2min until uniform mixing, heating the uniformly mixed base material layer raw materials to above 60 ℃, uniformly coating the base material layer raw materials on a cured luminous surface layer, and curing for 1 hour to obtain the luminous panel.
Example 5
The invention provides a luminescent plate, which comprises a luminescent surface layer and a substrate layer,
the luminous surface layer comprises the following raw material components in percentage by weight:
32.64 percent of polyurea resin, 0.049 percent of light stabilizer, 0.098 percent of ultraviolet absorber, 0.326 percent of defoaming agent, 3.27 percent of anti-settling agent, 3.26 percent of diluent, 36 percent of luminescent powder and 24.357 percent of polyurea curing agent;
the substrate layer comprises the following raw material components in percentage by weight:
in summer or when the environmental temperature is above 20 ℃, the weight ratio of the epoxy resin to the epoxy curing agent is preferably 5:1, the epoxy resin is 40.57%, the titanium dioxide is 2.44%, the ultraviolet absorbent is 0.06%, the defoaming agent is 0.12%, the high-molecular-grade calcium carbonate powder is 48.696% and the epoxy curing agent is 8.114%;
the polyurea resin is a semi-prepolymer prepared by reacting a RuiAn or RuiOh compound with isocyanate, and the polyurea curing agent is a mixture consisting of RuiAn resin and RuiAn chain extender;
the light stabilizer is hindered amine light stabilizer HS-508, and the ultraviolet light absorber is ultraviolet light absorber UV-1300;
the defoaming agent is acetic acid and acrylic acid copolymer defoaming agent, more specifically, FLOWLEN AC-300 type defoaming agent from Kyoho, Japan is selected;
the diluent is butyl ester;
the anti-settling agent is polyamide wax.
The preparation method of the luminescent plate comprises the following steps:
(1) and (3) curing the luminous surface layer: adding a light stabilizer, an ultraviolet absorbent, a defoaming agent, an anti-settling agent and a diluent into polyurea resin for first mixing, wherein the stirring speed is 1000r/min, and the time is 5min until all the raw materials are uniformly mixed; adding the luminescent powder for second mixing at a stirring speed of 1000r/min for 8min until the luminescent powder is uniformly mixed with the raw materials for first mixing, finally adding a polyurea curing agent for third mixing at a stirring speed of 1500r/min for 1-5min until the raw material components are uniformly mixed, pouring the uniformly mixed luminescent surface layer raw materials into a mould for natural curing for 4 hours to obtain a cured luminescent surface layer;
(2) curing the substrate layer: adding titanium dioxide, an ultraviolet absorbent, a defoaming agent and high-molecular calcium carbonate powder into epoxy resin for first mixing at a mixing and stirring speed of 700r/min for 3min, adding an epoxy curing agent after uniform mixing, performing second mixing at a mixing and stirring speed of 1500r/min for 5min to uniform mixing, uniformly coating the uniformly mixed base material layer raw materials on a cured luminous surface layer, and naturally curing for 5 hours to obtain the luminous panel.
Example 6
The invention provides a luminescent plate, which comprises a luminescent surface layer and a substrate layer,
the luminous surface layer comprises the following raw material components in percentage by weight:
39% of polyurea resin, 0.07% of light stabilizer, 0.10% of ultraviolet absorber, 0.3% of defoaming agent, 4% of diluent, 30.79% of luminescent powder and 25.74% of polyurea curing agent;
the substrate layer comprises the following raw material components in percentage by weight:
the environment temperature is about 18 ℃, and the weight ratio of the epoxy resin to the epoxy curing agent is 4.1: 1;
38.44% of epoxy resin, 2% of titanium dioxide, 0.06% of ultraviolet absorbent, 0.1% of defoaming agent, 50% of high-molecular-grade calcium carbonate powder and 9.4% of epoxy curing agent;
the polyurea resin is a semi-prepolymer prepared by reacting a RuiAn or RuiOh compound with isocyanate, and the polyurea curing agent is a mixture consisting of RuiAn resin and RuiAn chain extender;
the light stabilizer is a mixture of a hindered amine light stabilizer HS-508 and a hindered amine light stabilizer 292, and the ultraviolet absorbent is an ultraviolet absorbent UV-1300;
the defoaming agent is acetic acid and acrylic acid copolymer defoaming agent, more specifically, FLOWLEN AC-300 type defoaming agent from Kyoho, Japan is selected;
the diluent is butyl ester;
the anti-settling agent is polyamide wax.
The preparation method of the luminescent plate comprises the following steps:
(1) and (3) curing the luminous surface layer: adding a light stabilizer, an ultraviolet absorbent, a defoaming agent, an anti-settling agent and a diluent into polyurea resin for first mixing, wherein the stirring speed is 900r/min, and the time is 8min until all the raw materials are uniformly mixed; adding the luminescent powder for second mixing at a stirring speed of 1100r/min for 7min until the luminescent powder is uniformly mixed with the raw materials for first mixing, finally adding a polyurea curing agent for third mixing at a stirring speed of 1800r/min for 2min until the raw material components are uniformly mixed, heating the uniformly mixed luminescent surface layer raw materials to above 60 ℃, pouring the raw materials into a mold for curing for 1 hour to obtain a cured luminescent surface layer;
(2) curing the substrate layer: adding titanium dioxide, an ultraviolet absorbent, a defoaming agent and high-molecular-weight calcium carbonate powder into epoxy resin for first mixing at a mixing and stirring speed of 500r/min for 3min, adding an epoxy curing agent after uniform mixing, performing second mixing at a mixing and stirring speed of 1800r/min for 4min until uniform mixing, heating the uniformly mixed base material layer raw materials to above 60 ℃, uniformly coating the uniformly mixed base material layer raw materials on a cured luminous surface layer, and curing for 1 hour to obtain the luminescent plate.
Example 7
The invention provides a luminescent plate, which comprises a luminescent surface layer and a substrate layer,
on the basis of example 4, silicate particles are added to the luminescent surface layer, and accordingly,
the luminous surface layer comprises the following raw material components in percentage by weight:
27% of polyurea resin, 0.081% of light stabilizer, 0.0405% of ultraviolet absorber, 0.27% of defoaming agent, 2.7% of anti-settling agent, 2.7% of diluent, 2% of silicate particles, 45% of luminescent powder and 20.2085% of polyurea curing agent;
the substrate layer comprises the following raw material components in percentage by weight:
in winter or when the ambient temperature is less than 20 ℃, the weight ratio of the epoxy resin to the epoxy curing agent is preferably 4:1, the weight ratio of epoxy resin: 38.948%, titanium dioxide: 2.44%, ultraviolet absorber: 0.06 percent, 0.12 percent of defoaming agent, 48.696 percent of high molecular grade calcium carbonate powder and 9.736 percent of epoxy curing agent.
The polyurea resin is a semi-prepolymer prepared by reacting a RuiAn or RuiOh compound with isocyanate, and the polyurea curing agent is a mixture consisting of RuiAn resin and RuiAn chain extender;
the light stabilizer is a mixture of hindered amine light stabilizers 292, and the ultraviolet light absorber is an ultraviolet light absorber UV-1300;
the defoaming agent is acetic acid and acrylic acid copolymer defoaming agent, more specifically, FLOWLEN AC-300 type defoaming agent from Kyoho, Japan is selected;
the diluent is di-n-alkyl phthalate diluent;
the anti-settling agent is polyamide wax.
The preparation method of the luminescent plate comprises the following steps:
(1) and (3) curing the luminous surface layer: adding a light stabilizer, an ultraviolet absorbent, a defoaming agent, an anti-settling agent and a diluent into polyurea resin for first mixing, wherein the stirring speed is 1000r/min, and the time is 5min until all the raw materials are uniformly mixed; adding the luminescent powder for second mixing at the stirring speed of 1200r/min for 6min, adding silicate particles after the luminescent powder and the raw materials for first mixing are uniformly mixed, and continuously mixing and stirring for 2min at the stirring speed of 1800 r/min; after uniformly mixing, finally adding a polyurea curing agent, mixing for the third time at a stirring speed of 1600r/min for 2min until all raw material components are uniformly mixed, heating the uniformly mixed raw material of the luminous surface layer to more than 60 ℃, pouring the raw material into a mould, and curing for 1 hour to obtain a cured luminous surface layer;
(2) curing the substrate layer: adding titanium dioxide, an ultraviolet absorbent, a defoaming agent and high-molecular calcium carbonate powder into epoxy resin for first mixing at a mixing and stirring speed of 800r/min for 2min, adding an epoxy curing agent after uniform mixing, performing second mixing at a mixing and stirring speed of 1600r/min for 2min until uniform mixing, heating the uniformly mixed base material layer raw materials to above 60 ℃, uniformly coating the base material layer raw materials on a cured luminous surface layer, and curing for 1 hour to obtain the luminous panel.
Example 8
On the basis of example 7, the composition of silicate particles in the luminescent surface layer was changed to 5.77%, and the amounts of other components were changed adaptively, specifically: the luminous surface layer comprises the following raw material components in percentage by weight:
27% of polyurea resin, 0.081% of light stabilizer, 0.0405% of ultraviolet absorber, 0.27% of defoaming agent, 2.7% of anti-settling agent, 2.7% of diluent, 5.77% of silicate particles, 41.23% of luminescent powder and 20.2085% of polyurea curing agent. The other components and amounts of the luminescent plate were the same as in example 7.
The light emitting panel was produced in the same manner as in example 7.
Example 9
On the basis of example 7, the composition of silicate particles in the luminescent surface layer is changed to 4%, and the amounts of other components are adaptively changed, specifically: the luminous surface layer comprises the following raw material components in percentage by weight:
27% of polyurea resin, 0.081% of light stabilizer, 0.0405% of ultraviolet absorber, 0.27% of defoaming agent, 2.7% of anti-settling agent, 2.7% of diluent, 4% of silicate particles, 43% of luminescent powder and 20.2085% of polyurea curing agent. The other components and amounts of the luminescent plate were the same as in example 7.
The light emitting panel was produced in the same manner as in example 7.
Examples of the experiments
1) The hardness and wear resistance of the light emitting panel of the invention were determined according to GB/T2411-2008 and GB/T4085-2015. The results are shown in Table 1.
TABLE 1
Table 1 shows that the wear resistance of the luminescent panel of the present invention meets the T-scale standard, and the hardness and wear resistance are excellent.
2) The luminance test was carried out with the luminescent panel of example 4 of the present invention, and the luminance of the new luminescent panel just produced and the luminance after one year of outdoor use were respectively tested.
The detection device comprises: CS-100 luminance meter with luminance unit of mcd/m2. The detection is carried out according to DIN67510 standard, and the 1-hour afterglow luminance is detected by exciting for 5min by using D65 standard light source illumination 1000 LX.
TABLE 2 luminescent Panel luminance contrast
As is clear from comparison of data in Table 2, the light-emitting panel of the present invention is a long persistence light-emitting material having excellent properties, and its luminance performance is still good after 1 year of outdoor use.
By visual observation, the luminescent plate does not have obvious yellowing and deformation after being used for 2 years, and has excellent weather resistance and aging resistance.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (5)
1. A luminescent plate is characterized by consisting of a luminescent surface layer and a substrate layer,
the luminous surface layer comprises the following raw material components in percentage by weight:
25-39% of polyurea resin, 0.07-0.12% of light stabilizer, 0.038-0.10% of ultraviolet absorber, 0.2-0.4% of defoaming agent, 1.11-4% of anti-settling agent, 2.7-4% of diluent, 26.27-50% of luminescent powder and 18.75-29.25% of polyurea curing agent;
the raw material components of the luminous surface layer also comprise 2-5.77% of silicate particles with 16-30 meshes;
the light stabilizer is hindered amine light stabilizer HS-508 and/or hindered amine light stabilizer 292, and the ultraviolet absorbent is ultraviolet absorbent UV-1300;
the polyurea resin is a semi-prepolymer prepared by the reaction of an amino-terminated or hydroxyl-terminated compound and isocyanate, and the polyurea curing agent is a mixture consisting of an amino-terminated resin and an amino-terminated chain extender;
the weight ratio of the polyurea resin to the polyurea curing agent is 1: 0.66-0.75;
the substrate layer comprises the following raw material components in percentage by weight:
38-42% of epoxy resin, 47-50% of high-molecular-grade calcium carbonate powder or talcum powder, 2-3% of titanium dioxide, 0.05-0.08% of ultraviolet absorbent, 0.1-0.2% of defoaming agent and 8.4-9.5% of epoxy curing agent;
the weight ratio of the epoxy resin to the epoxy curing agent is 4-5: 1;
the preparation method of the luminescent plate comprises the following steps:
(1) and (3) curing the luminous surface layer: adding a light stabilizer, an ultraviolet absorber, a defoaming agent, an anti-settling agent and a diluent into polyurea resin for first mixing until all raw materials are uniformly mixed, then adding the luminescent powder for second mixing until the luminescent powder and all the raw materials which are mixed for the first time are uniformly mixed, finally adding a polyurea curing agent for third mixing until the luminescent powder and all the raw materials are uniformly mixed, pouring the uniformly mixed luminescent surface layer raw materials into a mold for curing, and obtaining a cured luminescent surface layer;
(2) curing the substrate layer: adding titanium dioxide, an ultraviolet absorbent, a defoaming agent, high-molecular-grade calcium carbonate powder or talcum powder into epoxy resin, uniformly mixing for the first time, adding an epoxy curing agent, uniformly mixing for the second time, uniformly coating the uniformly-mixed raw materials of the substrate layer on the cured luminous surface layer, and curing to obtain the luminous panel.
2. A light-emitting panel as claimed in claim 1, comprising a light-emitting surface layer and a substrate layer,
the luminous surface layer comprises the following raw material components in percentage by weight:
32.64 percent of polyurea resin, 0.049 percent of light stabilizer, 0.098 percent of ultraviolet absorber, 0.326 percent of defoaming agent, 3.27 percent of anti-settling agent, 3.26 percent of diluent, 36 percent of luminescent powder and 24.357 percent of polyurea curing agent,
or
27% of polyurea resin, 0.081% of light stabilizer, 0.0405% of ultraviolet absorber, 0.27% of defoaming agent, 2.7% of anti-settling agent, 2.7% of diluent, 47% of luminescent powder and 20.2085% of polyurea curing agent;
the substrate layer comprises the following raw material components in percentage by weight:
40.57% of epoxy resin, 48.696% of high-molecular-grade calcium carbonate powder or talcum powder, 2.44% of titanium dioxide, 0.06% of ultraviolet absorbent, 0.12% of defoaming agent and 8.114% of epoxy curing agent;
or
38.948% of epoxy resin, 48.696% of high-molecular-grade calcium carbonate powder or talcum powder, 2.44% of titanium dioxide, 0.06% of ultraviolet absorbent, 0.12% of defoaming agent and 9.736% of epoxy curing agent.
3. The light-emitting panel of claim 1, wherein the diluent is an ester diluent or a ketone diluent.
4. A light-emitting panel as claimed in claim 1, characterized in that said defoamer is an acetic acid and acrylic acid copolymer defoamer or a silicone defoamer.
5. The light-emitting panel of claim 1, wherein the curing environment temperature is above 20 ℃ and the natural curing time is 3-5 hours; when the curing environment temperature is less than 20 ℃, the mixed raw material to be cured is heated to more than 60 ℃, and the curing time is 0.5-1.5 hours.
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