CN104139645A - Stoving varnish writing board and preparing method for stoving varnish writing board - Google Patents
Stoving varnish writing board and preparing method for stoving varnish writing board Download PDFInfo
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- CN104139645A CN104139645A CN201410379185.1A CN201410379185A CN104139645A CN 104139645 A CN104139645 A CN 104139645A CN 201410379185 A CN201410379185 A CN 201410379185A CN 104139645 A CN104139645 A CN 104139645A
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Abstract
The invention discloses a stoving varnish writing board and a preparing method for the stoving varnish writing board, and relates to the technical field of teaching tools. The stoving varnish writing board comprises a substrate, the upper surface of the substrate is sequentially provided with a passivation layer and a stoving varnish layer, the upper surface of the stoving varnish layer is provided with an impervious layer, the stoving varnish layer is made of stoving varnish, and the stoving varnish is formed by mixing, grinding and filtering, by mass, 30-40% of acrylic resin, 0.5-1% of dispersing agents, 1.5-3% of coloring pigments, 8-15% of anti-settling agents, 20-32% of water, 10-15% of urea, melamine and formaldehyde resin, 1-2% of catalysts, 10-18% of wear-resistant filler, 2-5% of flatting agents and 5-10% of auxiliaries. The stoving varnish writing board has the advantages that hardness is high, glossiness is low, the surface of the stoving varnish writing board is uniform, coarseness is moderate and character strokes can be prevented from permeating the writing board, chalk and fountain pens can be used for writing, vision of teachers and students can be effectively protected, the service life of the writing board is prolonged, the preparation process is good and environment protection is achieved.
Description
Technical field
The present invention relates to teaching aid technical field.
Background technology
More than 90% teacher in existing school the inside is still using clipboard, clipboard is from cement clipboard, wooden clipboard, frosted glass clipboard, the evolution upgrading of metal clipboard, metal clipboard ubiquity quality problems on existing market, comprise and get rusty, fall that paint, look become, dust is many, reflective, the life-span is short etc.; Some uses just need to change for 1 year; And the low clipboard of service property (quality), to teachers and students' physical and mental health, can threaten.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of baking vanish clipboard and preparation method thereof, this varnish board has that hardness is large, glossiness is low, surface uniform, roughness are moderate, be easy to preparation, prevent the feature that writing infiltrates, can can write with water-color paintbrush again with chalk-writing, can effectively protect teachers and students' eyesight, improve the service life of clipboard; Processing property is good, is beneficial to environmental protection.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of baking vanish clipboard, comprise substrate, and upper surface of base plate is disposed with passivation layer and baking vanish layer, and baking vanish layer upper surface is provided with impervious barrier; The material of baking vanish layer is baking vanish, and baking vanish is comprised of the raw material of following mass percent:
Acrylic resin 30-40%,
Dispersant 0.5-1%,
Coloring pigment 1.5-3%,
Anti-settling agent 8-15%,
Water 20-32%,
Urea-melamine-formaldehyde resin 10-15%,
Catalyst 1-2%,
Wear resistant filler 10-18%,
Delustering agent 2-5%,
Auxiliary agent 5-10%,
Through mixing, grinding, filtration, make.
Preferably, dispersant is PAA-402 dispersant; Anti-settling agent is FP-88 anti-settling agent; Coloring pigment is blackish green coloring pigment; Delustering agent is white carbon; Wear resistant filler is the mixture of ceramic powder and graphite powder, and wherein the mass ratio of ceramic powder and graphite powder is 1:1-3.
Preferably, catalyst is isopropyl alcohol; Auxiliary agent is propandiol butyl ether.
Preferably, the material of impervious barrier is acrylic resin.
Preferably, impervious barrier upper surface is provided with coating layer.
Preferably, substrate back is provided with back of the body enamelled coating.
The preparation method of baking vanish clipboard, comprises the steps:
A, at upper surface of base plate, prepare passivation layer;
The preparation of B, baking vanish layer:
A is first that 30-40% acrylic resin, 0.5-1% dispersant, 1.5-3% coloring pigment, 8-15% anti-settling agent and the 10-17% water speed mixed at high speed with 800-1000 r/min in container is disperseed 10-15 minute by mass fraction, then drops in sand mill and is ground to below fineness 20um;
B is 10-15% urea-melamine-formaldehyde resin, 1-2% catalyst, 10-18% wear resistant filler, 2-5% delustering agent, 5-10% auxiliary agent and 10-15% water to adding mass fraction in above-mentioned slurry again, speed mixed at high speed with 800-1000r/min is even, be transferred to needed color, gloss, being coated with-4 glasss of medium viscosities, it it is 100-140 second, finally use strainer filterings more than 300 orders, make baking vanish;
The baking vanish that c makes in passivation layer surface coating above-mentioned steps b, solidifies at 224-232 ℃ of PMT metallic plate temperature, and formation baking vanish layer is naturally cooling;
C, at baking vanish layer surface-coated acrylic resin, form impervious barrier, make baking vanish clipboard.
Preferably, dispersant is PAA-402 dispersant; Anti-settling agent is FP-88 anti-settling agent; Coloring pigment is blackish green coloring pigment; Delustering agent is white carbon; Wear resistant filler is the mixture of ceramic powder and graphite powder, and wherein the mass ratio of ceramic powder and graphite powder is 1:1-3; Catalyst is isopropyl alcohol; Auxiliary agent is propandiol butyl ether.
Preferably, impervious barrier upper surface pastes PE film, forms coating layer.
Preferably, substrate back coating antirust paint, forms back of the body enamelled coating.
Baking vanish layer material-the baking vanish of varnish board of the present invention, in its raw material, acrylic resin and urea-melamine-formaldehyde resin are main body film forming matter.
Dispersant adopts the PAA-402 dispersant of Shandong Heng Lian Chemical Co., Ltd., for a kind of low-molecular-weight, water-based, high-efficiency anion dispersant, main component is Sodium Polyacrylate, there is effect wetting and that disperse, there is suitable compatibility with resin, needed time of dispersion process and energy have been reduced, and can prevent from mutually assembling between wear resistant filler, also can promote that coloring pigment is effectively scattered in system, improve gloss, tinting strength, tinting power and covering power, bearing capacity to wear resistant filler and coloring pigment is strong, in dispersion process, keep lower foam generation rate, viscosity stable that can keep system after lacquering.
Anti-settling agent adopts the FP-88 anti-settling agent of Linan, Hangzhou coating additive Chemical Co., Ltd., is anion surfactant, and pigment, wear resistant filler, resin are had to powerful suction-operated, forms coating as thin as a wafer, prevents that pigment from sinking to the bottom, and do not lump.
Take water as solvent, make not have in the production of this baking vanish and use procedure the discharge of toxic and harmful, and save the energy, can not produce combustion phenomena.
Coloring pigment adopts blackish green coloring pigment, and color and luster is soft, and teachers and students' eyesight can be effectively alleviated and be protected in not dazzle; Coloring pigment number can determine the depth of color, therefore can increase as required coloring pigment number.
Delustering agent adopts white carbon, is conducive to disperse in water-based system, and adjustable baking vanish glossiness, improves paint film and passivation layer bond strength, increases hardness of paint film.
Wear resistant filler adopts the mixture of ceramic powder and graphite powder, wherein ceramic powder is hard material, mainly play wear-resistant effect, in enamelled coating, mainly play skeleton, graphite powder is flexible material, mainly play anti-attrition effect, play the frictional force reducing between friction pair, ceramic powder and the combination of graphite powder soft or hard, the mass ratio of ceramic powder and graphite powder is 1:1-1:3, neither too hard, nor too soft, played good antiwear and reducing friction effect.
Catalyst adopts isopropyl alcohol, can promote acrylic resin and urea melamine formaldehyde resin crosslinked, guarantees that paint film is completely crosslinked, improves paint film compactness.
Auxiliary agent adopts propandiol butyl ether, and main rising regulates baking vanish viscosity, the effect that improves levelability.
In baking vanish clipboard of the present invention, passivation layer can protective substrate, prevents substrate corrosion, and has the effect that improves adhesion; It is large that baking vanish layer has hardness, and glossiness is low, surface uniform, the feature that roughness is moderate; Impervious barrier can prevent that person's handwriting from infiltrating baking vanish layer, makes person's handwriting be easy to wiping; Coating layer can play the effect of protection baking vanish layer and impervious barrier, before use, coating layer should be thrown off; Back of the body enamelled coating can protective substrate, prevents substrate corrosion.
The beneficial effect that adopts technique scheme to produce is:
(1) varnish board hardness of the present invention is large, with pencil hardness test, can reach 8H, meets the wearing and tearing of chalk while writing, thereby improves service life.
(2) varnish board glossiness of the present invention is low, and conventional clipboard glossiness is within 12 glossiness, is adjusted to 1.5 gloss, thereby greatly reduces the eye injury causing due to reflective and the present invention is minimum.
(3) varnish board roughness of the present invention is moderate, and roughness is too large, and it is painstaking to write, and is difficult for wiping, and roughness is too low, writes and skids, and writing is unclear, roughness parameter≤3.2 μ m of the present invention, best results; And be easy to prepare; Good manufacturability, is beneficial to environmental protection.
(4) impervious barrier of varnish board of the present invention can prevent that person's handwriting from infiltrating baking vanish layer, makes person's handwriting be easy to wiping; And varnish board can be write with water-color paintbrush again with chalk-writing.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation;
Fig. 1 is the structural representation of the embodiment of the present invention 1;
Fig. 2 is the structural representation of the embodiment of the present invention 2;
Fig. 3 is the structural representation of the embodiment of the present invention 3;
Fig. 4 is the structural representation of the embodiment of the present invention 4;
In figure, 1, the back of the body enamelled coating; 2, substrate; 3, passivation layer; 4, baking vanish layer; 5, impervious barrier; 6, coating layer.
The specific embodiment
The raw materials used market of the present invention is all on sale, and wherein PAA-402 dispersant is purchased from Shandong Heng Lian Chemical Co., Ltd.; FP-88 anti-settling agent is purchased from Linan, Hangzhou coating additive Chemical Co., Ltd.; White carbon is purchased from Dongying City Xin Da Chemical Co., Ltd.; Ceramic powder is purchased from Guangzhou Zhen Wei Chemical Industry Science Co., Ltd; Graphite powder is purchased from Qingdao Chen Yang graphite Co., Ltd; Curing agent is purchased from grinding scientific and technological Industrial Co., Ltd in Xuzhou; Acrylic resin is purchased from Japanese ippon company; Urea-melamine-formaldehyde resin is purchased from Suzhou Shenjia Resin Co., Ltd..
Embodiment 1
A baking vanish clipboard, as shown in Figure 1, comprises substrate 2, and substrate 2 upper surfaces are disposed with passivation layer 3, baking vanish layer 4 and impervious barrier 5.
The material of impervious barrier 5 is acrylic resin.The material of baking vanish layer 4 is baking vanish, baking vanish is comprised of the raw material of following mass percent: acrylic resin 30%, dispersant 1%, coloring pigment 2%, anti-settling agent 8%, water 22%, urea-melamine-formaldehyde resin 13%, catalyst 1%, wear resistant filler 16%, delustering agent 2%, auxiliary agent 5%, makes through mixing, grinding, filtration.Wherein, dispersant is PAA-402 dispersant; Anti-settling agent is FP-88 anti-settling agent; Coloring pigment is blackish green coloring pigment; Delustering agent is white carbon; Wear resistant filler is the mixture of ceramic powder and graphite powder, and wherein the mass ratio of ceramic powder and graphite powder is 1:1; Catalyst is isopropyl alcohol; Auxiliary agent is propandiol butyl ether.
The preparation method of baking vanish clipboard, comprises the steps:
A, at substrate 2 upper surfaces, prepare passivation layer 3: substrate 2 upper surfaces are carried out to electrochemical deoiling with degreaser, clear water rinsing, dry after, at substrate 2 upper surfaces, with passivating solution, carry out Passivation Treatment, dry, form passivation layer 3; Substrate 2 is steel plate, generally adopts 0.3mm steel plate; Above-mentioned electrochemical deoiling, the Passivation Treatment of steel plate are carried out according to prior art, and passivating solution can adopt chromate or chromium-free passivation liquid.
The preparation of B, baking vanish layer 4:
A is first that 30% acrylic resin, 1% dispersant, 2% coloring pigment, 8% anti-settling agent and the 10% water speed mixed at high speed with 900r/min in container is disperseed 12 minutes by mass fraction, then drops in sand mill and is ground to below fineness 20um;
B is 13% urea-melamine-formaldehyde resin, 1% catalyst, 16% wear resistant filler, 2% delustering agent, 5% auxiliary agent and 12% water to adding mass fraction in above-mentioned slurry again, speed mixed at high speed with 1000r/min is even, be transferred to needed color, gloss, being coated with-4 glasss of medium viscosities, it it is 100-140 second, finally use strainer filterings more than 300 orders, make baking vanish;
The baking vanish that c makes in passivation layer 3 surface-coated above-mentioned steps b, solidifies at 224-232 ℃ of PMT metallic plate temperature, forms baking vanish layer 4, naturally cooling, baking vanish layer 4 thickness 15 microns and more than.
C, at baking vanish layer 4 surface-coated acrylic resin, form impervious barrier 5, make baking vanish clipboard.
The disposable sticky pressing of this baking vanish clipboard and cystosepiment and galvanized steel plain sheet, can obtain clipboard plate body, then uses sub-light aluminum alloy frame bound edge, arc Plastic protective corner cornerite, carry out rivet and fix, obtain protecting teaching writing board, and can support the use with multimedia teaching facility.
Embodiment 2
A baking vanish clipboard, as shown in Figure 2, comprises substrate 2, and substrate 2 upper surfaces are disposed with passivation layer 3, baking vanish layer 4, impervious barrier 5 and coating layer 6.
The material of impervious barrier 5 is acrylic resin.The material of baking vanish layer 4 is baking vanish, baking vanish is comprised of the raw material of following mass percent: acrylic resin 34%, dispersant 0.5%, coloring pigment 1.5%, anti-settling agent 8%, water 24%, urea-melamine-formaldehyde resin 10%, catalyst 1%, wear resistant filler 14%, delustering agent 2%, auxiliary agent 5%, makes through mixing, grinding, filtration.Wherein, dispersant is PAA-402 dispersant; Anti-settling agent is FP-88 anti-settling agent; Coloring pigment is blackish green coloring pigment; Delustering agent is white carbon; Wear resistant filler is the mixture of ceramic powder and graphite powder, and wherein the mass ratio of ceramic powder and graphite powder is 1:2; Catalyst is isopropyl alcohol; Auxiliary agent is propandiol butyl ether; Water is distilled water.
The preparation method of baking vanish clipboard, comprises the steps:
A, at substrate 2 upper surfaces, prepare passivation layer 3: substrate 2 upper surfaces are carried out to electrochemical deoiling with degreaser, clear water rinsing, dry after, at substrate 2 upper surfaces, with passivating solution, carry out Passivation Treatment, dry, form passivation layer 3; Substrate 2 is steel plate, generally adopts 0.3mm steel plate; Above-mentioned electrochemical deoiling, the Passivation Treatment of steel plate are carried out according to prior art, and passivating solution can adopt chromate or chromium-free passivation liquid.
The preparation of B, baking vanish layer 4:
A is first that 34% acrylic resin, 0.5% dispersant, 1.5% coloring pigment, 8% anti-settling agent and the 14% distilled water speed mixed at high speed with 1000r/min in container is disperseed 10 minutes by mass fraction, then drops in sand mill and is ground to below fineness 20um;
B is 10% urea-melamine-formaldehyde resin, 1% catalyst, 14% wear resistant filler, 2% delustering agent, 5% auxiliary agent and 10% distilled water to adding mass fraction in above-mentioned slurry again, speed mixed at high speed with 800r/min is even, be transferred to needed color, gloss, being coated with-4 glasss of medium viscosities, it it is 100-140 second, finally use strainer filterings more than 300 orders, make baking vanish;
The baking vanish that c makes in the surperficial roller coating above-mentioned steps of passivation layer 3 b, solidifies at 224-232 ℃ of PMT metallic plate temperature, forms baking vanish layer 4, naturally cooling, baking vanish layer 4 thickness 15 microns and more than.
C, at the surperficial roller coating acrylic resin of baking vanish layer 4, form impervious barrier 5.
D, PE film is attached to impervious barrier 5 surfaces, forms coating layer 6, make baking vanish clipboard.
The disposable sticky pressing of this baking vanish clipboard and cystosepiment and galvanized steel plain sheet; can obtain clipboard plate body; use again sub-light aluminum alloy frame bound edge; arc Plastic protective corner cornerite; carrying out rivet fixes; obtain protecting teaching writing board, coating layer 6 can play the effect of protection baking vanish layer 4 and impervious barrier 5, before use, coating layer 6 should be thrown off.
Embodiment 3
A baking vanish clipboard, as shown in Figure 3, comprises substrate 2, and substrate 2 upper surfaces are disposed with passivation layer 3, baking vanish layer 4 and impervious barrier 5; Substrate 2 back sides are provided with back of the body enamelled coating 1.
The material of impervious barrier 5 is acrylic resin.The material of baking vanish layer 4 is baking vanish, baking vanish is comprised of the raw material of following mass percent: acrylic resin 35%, dispersant 0.5%, coloring pigment 1.5%, anti-settling agent 10%, water 22%, urea-melamine-formaldehyde resin 10%, catalyst 1.5%, wear resistant filler 11%, delustering agent 2.5%, auxiliary agent 6%, makes through mixing, grinding, filtration.Wherein, dispersant is PAA-402 dispersant; Anti-settling agent is FP-88 anti-settling agent; Coloring pigment is blackish green coloring pigment; Delustering agent is white carbon; Wear resistant filler is the mixture of ceramic powder and graphite powder, and wherein the mass ratio of ceramic powder and graphite powder is 1:3; Catalyst is isopropyl alcohol; Auxiliary agent is propandiol butyl ether.
The preparation method of baking vanish clipboard, comprises the steps:
A, at substrate 2 upper surfaces, prepare passivation layer 3: substrate 2 upper surfaces are carried out to electrochemical deoiling with degreaser, clear water rinsing, dry after, at substrate 2 upper surfaces, with passivating solution, carry out Passivation Treatment, dry, form passivation layer 3; At substrate 2 back side spraying antirust paints, form back of the body enamelled coating 1; Substrate 2 is steel plate, generally adopts 0.3mm steel plate; The above-mentioned electrochemical deoiling of steel plate, Passivation Treatment, antirust processing are carried out according to prior art, and passivating solution can adopt chromate or chromium-free passivation liquid.
The preparation of B, baking vanish layer 4:
A is first that 35% acrylic resin, 0.5% dispersant, 1.5% coloring pigment, 10% anti-settling agent and the 12% water speed mixed at high speed with 800r/min in container is disperseed 15 minutes by mass fraction, then drops in sand mill and is ground to below fineness 20um;
B is 10% urea-melamine-formaldehyde resin, 1.5% catalyst, 11% wear resistant filler, 2.5% delustering agent, 6% auxiliary agent and 10% water to adding mass fraction in above-mentioned slurry again, speed mixed at high speed with 900r/min is even, be transferred to needed color, gloss, being coated with-4 glasss of medium viscosities, it it is 100-140 second, finally use strainer filterings more than 300 orders, make baking vanish;
The baking vanish that c makes in passivation layer 3 surface spraying above-mentioned steps b, solidifies at 224-232 ℃ of PMT metallic plate temperature, forms baking vanish layer 4, naturally cooling, baking vanish layer 4 thickness 15 microns and more than.
C, at baking vanish layer 4 surface spraying acrylic resin, form impervious barrier 5, make baking vanish clipboard.
The disposable sticky pressing of this baking vanish clipboard and cystosepiment and galvanized steel plain sheet, can obtain clipboard plate body, then uses sub-light aluminum alloy frame bound edge, and arc Plastic protective corner cornerite, carries out rivet and fix, and obtains protecting teaching writing board.
Embodiment 4
A baking vanish clipboard, as shown in Figure 4, comprises substrate 2, and substrate 2 upper surfaces are disposed with passivation layer 3, baking vanish layer 4, impervious barrier 5 and coating layer 6; Substrate 2 back sides are provided with back of the body enamelled coating 1.
The material of impervious barrier 5 is acrylic resin.The material of baking vanish layer 4 is baking vanish, baking vanish is comprised of the raw material of following mass percent: acrylic resin 40%, dispersant 0.6%, coloring pigment 2%, anti-settling agent 8%, water 20%, urea-melamine-formaldehyde resin 10%, catalyst 2%, wear resistant filler 10%, delustering agent 2.4%, auxiliary agent 5%, makes through mixing, grinding, filtration.Wherein, dispersant is PAA-402 dispersant; Anti-settling agent is FP-88 anti-settling agent; Coloring pigment is blackish green coloring pigment; Delustering agent is white carbon; Wear resistant filler is the mixture of ceramic powder and graphite powder, and wherein the mass ratio of ceramic powder and graphite powder is 1:1.5; Catalyst is isopropyl alcohol; Auxiliary agent is propandiol butyl ether; Water is distilled water.
The preparation method of baking vanish clipboard, comprises the steps:
A, at substrate 2 upper surfaces, prepare passivation layer 3: substrate 2 upper surfaces are carried out to electrochemical deoiling with degreaser, clear water rinsing, dry after, at substrate 2 upper surfaces, with passivating solution, carry out Passivation Treatment, dry, form passivation layer 3; At substrate 2 back side roller coating antirust paints, form back of the body enamelled coating 1; Substrate 2 is steel plate, generally adopts 0.3mm steel plate; The above-mentioned electrochemical deoiling of steel plate, Passivation Treatment, antirust processing are carried out according to prior art, and passivating solution can adopt chromate or chromium-free passivation liquid.
The preparation of B, baking vanish layer 4:
A is first that 40% acrylic resin, 0.6% dispersant, 2% coloring pigment, 8% anti-settling agent and the 10% distilled water speed mixed at high speed with 800r/min in container is disperseed 14 minutes by mass fraction, then drops in sand mill and is ground to below fineness 20um;
B is 10% urea-melamine-formaldehyde resin, 2% catalyst, 10% wear resistant filler, 2.4% delustering agent, 5% auxiliary agent and 10% distilled water to adding mass fraction in above-mentioned slurry again, speed mixed at high speed with 900r/min is even, be transferred to needed color, gloss, being coated with-4 glasss of medium viscosities, it it is 100-140 second, finally use strainer filterings more than 300 orders, make baking vanish;
The baking vanish that c makes in the surperficial roller coating above-mentioned steps of passivation layer 3 b, solidifies at 224-232 ℃ of PMT metallic plate temperature, forms baking vanish layer 4, naturally cooling, baking vanish layer 4 thickness 15 microns and more than.
C, at the surperficial roller coating acrylic resin of baking vanish layer 4, form impervious barrier 5.
D, PE film is attached to impervious barrier 5 surfaces, forms coating layer 6, make baking vanish clipboard.
The disposable sticky pressing of this baking vanish clipboard and cystosepiment and galvanized steel plain sheet; can obtain clipboard plate body; use again sub-light aluminum alloy frame bound edge; arc Plastic protective corner cornerite; carrying out rivet fixes; obtain protecting teaching writing board, coating layer 6 can play the effect of protection baking vanish layer 4 and impervious barrier 5, before use, coating layer 6 should be thrown off.
Embodiment 5
A baking vanish clipboard, comprises substrate 2, and substrate 2 upper surfaces are disposed with passivation layer 3, baking vanish layer 4 and impervious barrier 5 from bottom to top.
The material of impervious barrier 5 is acrylic resin.The material of baking vanish layer 4 is baking vanish, baking vanish is comprised of the raw material of following mass percent: acrylic resin 31%, dispersant 0.5%, coloring pigment 2.2%, anti-settling agent 13.5%, water 20%, urea-melamine-formaldehyde resin 14%, catalyst 1.8%, wear resistant filler 10%, delustering agent 2%, auxiliary agent 5%, makes through mixing, grinding, filtration.Wherein, dispersant is PAA-402 dispersant; Anti-settling agent is FP-88 anti-settling agent; Coloring pigment is blackish green coloring pigment; Delustering agent is white carbon; Wear resistant filler is the mixture of ceramic powder and graphite powder, and wherein the mass ratio of ceramic powder and graphite powder is 1:2.5; Catalyst is isopropyl alcohol; Auxiliary agent is propandiol butyl ether.
The preparation method of this baking vanish clipboard is with the preparation method of embodiment 1, and difference is, the preparation of step B, baking vanish layer 4:
A is first that 31% acrylic resin, 0.5% dispersant, 2.2% coloring pigment, 13.5% anti-settling agent and the 10% water speed mixed at high speed with 900r/min in container is disperseed 11 minutes by mass fraction, then drops in sand mill and is ground to below fineness 20um;
B is 14% urea-melamine-formaldehyde resin, 1.8% catalyst, 10% wear resistant filler, 2% delustering agent, 5% auxiliary agent and 10% water to adding mass fraction in above-mentioned slurry again, speed mixed at high speed with 800r/min is even, be transferred to needed color, gloss, being coated with-4 glasss of medium viscosities, it it is 100-140 second, finally use strainer filterings more than 300 orders, make baking vanish.
Embodiment 6
A baking vanish clipboard, comprises substrate 2, and substrate 2 upper surfaces are disposed with passivation layer 3, baking vanish layer 4, impervious barrier 5 and coating layer 6.
The material of impervious barrier 5 is acrylic resin.The material of baking vanish layer 4 is baking vanish, baking vanish is comprised of the raw material of following mass percent: acrylic resin 32%, dispersant 0.5%, coloring pigment 2.5%, anti-settling agent 9%, water 20%, urea-melamine-formaldehyde resin 15%, catalyst 1%, wear resistant filler 12%, delustering agent 3%, auxiliary agent 5%, makes through mixing, grinding, filtration.Wherein, dispersant is PAA-402 dispersant; Anti-settling agent is FP-88 anti-settling agent; Coloring pigment is blackish green coloring pigment; Delustering agent is white carbon; Wear resistant filler is the mixture of ceramic powder and graphite powder, and wherein the mass ratio of ceramic powder and graphite powder is 1:1; Catalyst is isopropyl alcohol; Auxiliary agent is propandiol butyl ether; Water is distilled water.
The preparation method of this baking vanish clipboard is with the preparation method of embodiment 2, and difference is, the preparation of step B, baking vanish layer 4:
A is first that 32% acrylic resin, 0.5% dispersant, 2.5% coloring pigment, 9% anti-settling agent and the 10% distilled water speed mixed at high speed with 1000r/min in container is disperseed 11 minutes by mass fraction, then drops in sand mill and is ground to below fineness 20um;
B is 15% urea-melamine-formaldehyde resin, 1% catalyst, 12% wear resistant filler, 3% delustering agent, 5% auxiliary agent and 10% distilled water to adding mass fraction in above-mentioned slurry again, speed mixed at high speed with 1000r/min is even, be transferred to needed color, gloss, being coated with-4 glasss of medium viscosities, it it is 100-140 second, finally use strainer filterings more than 300 orders, make baking vanish.
Embodiment 7
A baking vanish clipboard, comprises substrate 2, and substrate 2 upper surfaces are disposed with passivation layer 3, baking vanish layer 4 and impervious barrier 5; Substrate 2 back sides are provided with back of the body enamelled coating 1.
The material of impervious barrier 5 is acrylic resin.The material of baking vanish layer 4 is baking vanish, baking vanish is comprised of the raw material of following mass percent: acrylic resin 30%, dispersant 0.5%, coloring pigment 1.5%, anti-settling agent 8%, water 28%, urea-melamine-formaldehyde resin 12%, catalyst 1%, wear resistant filler 12%, delustering agent 2%, auxiliary agent 5%, makes through mixing, grinding, filtration.Wherein, dispersant is PAA-402 dispersant; Anti-settling agent is FP-88 anti-settling agent; Coloring pigment is blackish green coloring pigment; Delustering agent is white carbon; Wear resistant filler is the mixture of ceramic powder and graphite powder, and wherein the mass ratio of ceramic powder and graphite powder is 1:1.8; Catalyst is isopropyl alcohol; Auxiliary agent is propandiol butyl ether.
The preparation method of this baking vanish clipboard is with the preparation method of embodiment 3, and difference is, the preparation of step B, baking vanish layer 4:
A is first that 30% acrylic resin, 0.5% dispersant, 1.5% coloring pigment, 8% anti-settling agent and the 15% water speed mixed at high speed with 1000r/min in container is disperseed 10 minutes by mass fraction, then drops in sand mill and is ground to below fineness 20um;
B is 12% urea-melamine-formaldehyde resin, 1% catalyst, 12% wear resistant filler, 2% delustering agent, 5% auxiliary agent and 13% water to adding mass fraction in above-mentioned slurry again, speed mixed at high speed with 900r/min is even, be transferred to needed color, gloss, being coated with-4 glasss of medium viscosities, it it is 100-140 second, finally use strainer filterings more than 300 orders, make baking vanish.
Embodiment 8
A baking vanish clipboard, comprises substrate 2, and substrate 2 upper surfaces are disposed with passivation layer 3, baking vanish layer 4, impervious barrier 5 and coating layer 6; Substrate 2 back sides are provided with back of the body enamelled coating 1.
The material of impervious barrier 5 is acrylic resin.The material of baking vanish layer 4 is baking vanish, baking vanish is comprised of the raw material of following mass percent: acrylic resin 30%, dispersant 0.5%, coloring pigment 1.5%, anti-settling agent 8%, water 32%, urea-melamine-formaldehyde resin 10%, catalyst 1%, wear resistant filler 10%, delustering agent 2%, auxiliary agent 5%, makes through mixing, grinding, filtration.Wherein, dispersant is PAA-402 dispersant; Anti-settling agent is FP-88 anti-settling agent; Coloring pigment is blackish green coloring pigment; Delustering agent is white carbon; Wear resistant filler is the mixture of ceramic powder and graphite powder, and wherein the mass ratio of ceramic powder and graphite powder is 1:2.2; Catalyst is isopropyl alcohol; Auxiliary agent is propandiol butyl ether; Water is distilled water.
The preparation method of this baking vanish clipboard is with the preparation method of embodiment 4, and difference is, the preparation of step B, baking vanish layer 4:
A is first that 30% acrylic resin, 0.5% dispersant, 1.5% coloring pigment, 8% anti-settling agent and the 17% distilled water speed mixed at high speed with 900r/min in container is disperseed 13 minutes by mass fraction, then drops in sand mill and is ground to below fineness 20um;
B is 10% urea-melamine-formaldehyde resin, 1% catalyst, 10% wear resistant filler, 2% delustering agent, 5% auxiliary agent and 15% distilled water to adding mass fraction in above-mentioned slurry again, speed mixed at high speed with 900r/min is even, be transferred to needed color, gloss, being coated with-4 glasss of medium viscosities, it it is 100-140 second, finally use strainer filterings more than 300 orders, make baking vanish.
Embodiment 9
A baking vanish clipboard, comprises substrate 2, and substrate 2 upper surfaces are disposed with passivation layer 3, baking vanish layer 4, impervious barrier 5 and coating layer 6; Substrate 2 back sides are provided with back of the body enamelled coating 1.
The material of impervious barrier 5 is acrylic resin.The material of baking vanish layer 4 is baking vanish, baking vanish is comprised of the raw material of following mass percent: acrylic resin 37%, dispersant 0.8%, coloring pigment 1.5%, anti-settling agent 8%, water 20%, urea-melamine-formaldehyde resin 11%, catalyst 1.2%, wear resistant filler 10%, delustering agent 3.5%, auxiliary agent 7%, makes through mixing, grinding, filtration.Wherein, dispersant is PAA-402 dispersant; Anti-settling agent is FP-88 anti-settling agent; Coloring pigment is blackish green coloring pigment; Delustering agent is white carbon; Wear resistant filler is the mixture of ceramic powder and graphite powder, and wherein the mass ratio of ceramic powder and graphite powder is 1:1; Catalyst is isopropyl alcohol; Auxiliary agent is propandiol butyl ether.
The preparation method of this baking vanish clipboard is with the preparation method of embodiment 4, and difference is, the preparation of step B, baking vanish layer 4:
A is first that 37% acrylic resin, 0.8% dispersant, 1.5% coloring pigment, 8% anti-settling agent and the 10% water speed mixed at high speed with 800r/min in container is disperseed 15 minutes by mass fraction, then drops in sand mill and is ground to below fineness 20um;
B is 11% urea-melamine-formaldehyde resin, 1.2% catalyst, 10% wear resistant filler, 3.5% delustering agent, 7% auxiliary agent and 10% water to adding mass fraction in above-mentioned slurry again, speed mixed at high speed with 1000r/min is even, be transferred to needed color, gloss, being coated with-4 glasss of medium viscosities, it it is 100-140 second, finally use strainer filterings more than 300 orders, make baking vanish.
Embodiment 10
A baking vanish clipboard, comprises substrate 2, and substrate 2 upper surfaces are disposed with passivation layer 3, baking vanish layer 4, impervious barrier 5 and coating layer 6; Substrate 2 back sides are provided with back of the body enamelled coating 1.
The material of impervious barrier 5 is acrylic resin.The material of baking vanish layer 4 is baking vanish, baking vanish is comprised of the raw material of following mass percent: acrylic resin 30%, dispersant 0.5%, coloring pigment 1.5%, anti-settling agent 8%, water 20%, urea-melamine-formaldehyde resin 10%, catalyst 1%, wear resistant filler 18%, delustering agent 4%, auxiliary agent 7%, makes through mixing, grinding, filtration.Wherein, dispersant is PAA-402 dispersant; Anti-settling agent is FP-88 anti-settling agent; Coloring pigment is blackish green coloring pigment; Delustering agent is white carbon; Wear resistant filler is the mixture of ceramic powder and graphite powder, and wherein the mass ratio of ceramic powder and graphite powder is 1:1.2; Catalyst is isopropyl alcohol; Auxiliary agent is propandiol butyl ether; Water is distilled water.
The preparation method of this baking vanish clipboard is with the preparation method of embodiment 4, and difference is, the preparation of step B, baking vanish layer 4:
A is first that 30% acrylic resin, 0.5% dispersant, 1.5% coloring pigment, 8% anti-settling agent and the 10% distilled water speed mixed at high speed with 800r/min in container is disperseed 15 minutes by mass fraction, then drops in sand mill and is ground to below fineness 20um;
B is 10% urea-melamine-formaldehyde resin, 1% catalyst, 18% wear resistant filler, 4% delustering agent, 7% auxiliary agent and 10% distilled water to adding mass fraction in above-mentioned slurry again, speed mixed at high speed with 800r/min is even, be transferred to needed color, gloss, being coated with-4 glasss of medium viscosities, it it is 100-140 second, finally use strainer filterings more than 300 orders, make baking vanish.
Embodiment 11
A baking vanish clipboard, comprises substrate 2, and substrate 2 upper surfaces are disposed with passivation layer 3, baking vanish layer 4, impervious barrier 5 and coating layer 6; Substrate 2 back sides are provided with back of the body enamelled coating 1.
The material of impervious barrier 5 is acrylic resin.The material of baking vanish layer 4 is baking vanish, baking vanish is comprised of the raw material of following mass percent: acrylic resin 30%, dispersant 0.5%, coloring pigment 1.5%, anti-settling agent 15%, water 20%, urea-melamine-formaldehyde resin 10%, catalyst 1%, wear resistant filler 10%, delustering agent 2%, auxiliary agent 10%, makes through mixing, grinding, filtration.Wherein, dispersant is PAA-402 dispersant; Anti-settling agent is FP-88 anti-settling agent; Coloring pigment is blackish green coloring pigment; Delustering agent is white carbon; Wear resistant filler is the mixture of ceramic powder and graphite powder, and wherein the mass ratio of ceramic powder and graphite powder is 1:2.7; Catalyst is isopropyl alcohol; Auxiliary agent is propandiol butyl ether.
The preparation method of this baking vanish clipboard is with the preparation method of embodiment 4, and difference is, the preparation of step B, baking vanish layer 4:
A is first that 30% acrylic resin, 0.5% dispersant, 1.5% coloring pigment, 15% anti-settling agent and the 10% water speed mixed at high speed with 1000r/min in container is disperseed 10 minutes by mass fraction, then drops in sand mill and is ground to below fineness 20um;
B is 10% urea-melamine-formaldehyde resin, 1% catalyst, 10% wear resistant filler, 2% delustering agent, 10% auxiliary agent and 10% water to adding mass fraction in above-mentioned slurry again, speed mixed at high speed with 1000r/min is even, be transferred to needed color, gloss, being coated with-4 glasss of medium viscosities, it it is 100-140 second, finally use strainer filterings more than 300 orders, make baking vanish.
Embodiment 12
A baking vanish clipboard, comprises substrate 2, and substrate 2 upper surfaces are disposed with passivation layer 3, baking vanish layer 4, impervious barrier 5 and coating layer 6; Substrate 2 back sides are provided with back of the body enamelled coating 1.
The material of impervious barrier 5 is acrylic resin.The material of baking vanish layer 4 is baking vanish, baking vanish is comprised of the raw material of following mass percent: acrylic resin 30%, dispersant 0.9%, coloring pigment 3%, anti-settling agent 12%, water 20%, urea-melamine-formaldehyde resin 10%, catalyst 1.1%, wear resistant filler 10%, delustering agent 5%, auxiliary agent 8%, makes through mixing, grinding, filtration.Wherein, dispersant is PAA-402 dispersant; Anti-settling agent is FP-88 anti-settling agent; Coloring pigment is blackish green coloring pigment; Delustering agent is white carbon; Wear resistant filler is the mixture of ceramic powder and graphite powder, and wherein the mass ratio of ceramic powder and graphite powder is 1:1; Catalyst is isopropyl alcohol; Auxiliary agent is propandiol butyl ether; Water is distilled water.
The preparation method of this baking vanish clipboard is with the preparation method of embodiment 4, and difference is, the preparation of step B, baking vanish layer 4:
A is first that 30% acrylic resin, 0.9% dispersant, 3% coloring pigment, 12% anti-settling agent and the 10% distilled water speed mixed at high speed with 1000r/min in container is disperseed 10 minutes by mass fraction, then drops in sand mill and is ground to below fineness 20um;
B is 10% urea-melamine-formaldehyde resin, 1.1% catalyst, 10% wear resistant filler, 5% delustering agent, 8% auxiliary agent and 10% distilled water to adding mass fraction in above-mentioned slurry again, speed mixed at high speed with 800r/min is even, be transferred to needed color, gloss, being coated with-4 glasss of medium viscosities, it it is 100-140 second, finally use strainer filterings more than 300 orders, make baking vanish.
The baking vanish clipboard making in above-mentioned 12 embodiment, throws off after coating layer, detects its surface property, and testing result sees the following form:
Hardness reaches: 8H(dolly method of testing), resistance to MEK wiping reaches 100 times, resistance to chalk wiping: process chalkboard eraser wiping rear surface is without obvious chalk trace, chalk font is easily removed, collocation salt spray resistance base paint special, its corrosion-resistant salt mist experiment is drawn fork for 600 hours and is divided monolateral corrosion to be no more than 2 millimeters.Roughness is moderate, can prevent that writing from infiltrating, and can effectively protect teachers and students' eyesight.
Claims (10)
1. a baking vanish clipboard, comprises substrate (2), and described substrate (2) upper surface is disposed with passivation layer (3) and baking vanish layer (4), it is characterized in that described baking vanish layer (4) upper surface is provided with impervious barrier (5); The material of described baking vanish layer (4) is baking vanish, and described baking vanish is comprised of the raw material of following mass percent:
Acrylic resin 30-40%,
Dispersant 0.5-1%,
Coloring pigment 1.5-3%,
Anti-settling agent 8-15%,
Water 20-32%,
Urea-melamine-formaldehyde resin 10-15%,
Catalyst 1-2%,
Wear resistant filler 10-18%,
Delustering agent 2-5%,
Auxiliary agent 5-10%,
Through mixing, grinding, filtration, make.
2. baking vanish clipboard according to claim 1, is characterized in that described dispersant is PAA-402 dispersant; Anti-settling agent is FP-88 anti-settling agent; Coloring pigment is blackish green coloring pigment; Delustering agent is white carbon; Wear resistant filler is the mixture of ceramic powder and graphite powder, and wherein the mass ratio of ceramic powder and graphite powder is 1:1-3.
3. baking vanish clipboard according to claim 1, is characterized in that described catalyst is isopropyl alcohol; Auxiliary agent is propandiol butyl ether.
4. baking vanish clipboard according to claim 1, the material that it is characterized in that described impervious barrier (5) is acrylic resin.
5. baking vanish clipboard according to claim 1, is characterized in that described impervious barrier (5) upper surface is provided with coating layer (6).
6. baking vanish clipboard according to claim 1 or 5, is characterized in that described substrate (2) back side is provided with back of the body enamelled coating (1).
7. the preparation method of baking vanish clipboard as claimed in claim 1, is characterized in that comprising the steps:
A, at substrate (2) upper surface, prepare passivation layer (3);
The preparation of B, baking vanish layer (4):
A is first that 30-40% acrylic resin, 0.5-1% dispersant, 1.5-3% coloring pigment, 8-15% anti-settling agent and the 10-17% water speed mixed at high speed with 800-1000 r/min in container is disperseed 10-15 minute by mass fraction, then drops in sand mill and is ground to below fineness 20um;
B is 10-15% urea-melamine-formaldehyde resin, 1-2% catalyst, 10-18% wear resistant filler, 2-5% delustering agent, 5-10% auxiliary agent and 10-15% water to adding mass fraction in above-mentioned slurry again, speed mixed at high speed with 800-1000r/min is even, be transferred to needed color, gloss, being coated with-4 glasss of medium viscosities, it it is 100-140 second, finally use strainer filterings more than 300 orders, make baking vanish;
The baking vanish that c makes in passivation layer (3) surface-coated above-mentioned steps b, solidifies at 224-232 ℃ of PMT metallic plate temperature, forms baking vanish layer (4), naturally cooling;
C, at baking vanish layer (4) surface-coated acrylic resin, form impervious barrier (5), make baking vanish clipboard.
8. the preparation method of baking vanish clipboard according to claim 7, is characterized in that described dispersant is PAA-402 dispersant; Anti-settling agent is FP-88 anti-settling agent; Coloring pigment is blackish green coloring pigment; Delustering agent is white carbon; Wear resistant filler is the mixture of ceramic powder and graphite powder, and wherein the mass ratio of ceramic powder and graphite powder is 1:1-3; Catalyst is isopropyl alcohol; Auxiliary agent is propandiol butyl ether.
9. the preparation method of baking vanish clipboard according to claim 7, is characterized in that described impervious barrier (5) upper surface pastes PE film, forms coating layer (6).
10. according to the preparation method of the baking vanish clipboard described in claim 7 or 9, it is characterized in that described substrate (2) back side coating antirust paint, form back of the body enamelled coating (1).
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