CN113563793A - Photocureable coating for teaching blackboard - Google Patents
Photocureable coating for teaching blackboard Download PDFInfo
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- CN113563793A CN113563793A CN202110539503.6A CN202110539503A CN113563793A CN 113563793 A CN113563793 A CN 113563793A CN 202110539503 A CN202110539503 A CN 202110539503A CN 113563793 A CN113563793 A CN 113563793A
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- photocureable coating
- teaching blackboard
- coating
- photocureable
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- 238000000576 coating method Methods 0.000 title claims abstract description 40
- 239000011248 coating agent Substances 0.000 title claims abstract description 39
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 11
- UWFRVQVNYNPBEF-UHFFFAOYSA-N 1-(2,4-dimethylphenyl)propan-1-one Chemical compound CCC(=O)C1=CC=C(C)C=C1C UWFRVQVNYNPBEF-UHFFFAOYSA-N 0.000 claims abstract description 8
- FIHBHSQYSYVZQE-UHFFFAOYSA-N 6-prop-2-enoyloxyhexyl prop-2-enoate Chemical compound C=CC(=O)OCCCCCCOC(=O)C=C FIHBHSQYSYVZQE-UHFFFAOYSA-N 0.000 claims abstract description 8
- WVDDGKGOMKODPV-UHFFFAOYSA-N Benzyl alcohol Chemical compound OCC1=CC=CC=C1 WVDDGKGOMKODPV-UHFFFAOYSA-N 0.000 claims abstract description 8
- 125000001931 aliphatic group Chemical group 0.000 claims abstract description 8
- 239000004359 castor oil Substances 0.000 claims abstract description 8
- 235000019438 castor oil Nutrition 0.000 claims abstract description 8
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 claims abstract description 8
- 239000000049 pigment Substances 0.000 claims abstract description 8
- 229920002635 polyurethane Polymers 0.000 claims abstract description 8
- 239000004814 polyurethane Substances 0.000 claims abstract description 8
- DCKVNWZUADLDEH-UHFFFAOYSA-N sec-butyl acetate Chemical compound CCC(C)OC(C)=O DCKVNWZUADLDEH-UHFFFAOYSA-N 0.000 claims abstract description 8
- OLPZCIDHOZATMA-UHFFFAOYSA-N 2,2-dioxooxathiiran-3-one Chemical class O=C1OS1(=O)=O OLPZCIDHOZATMA-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229960004217 benzyl alcohol Drugs 0.000 claims abstract description 7
- XLPJNCYCZORXHG-UHFFFAOYSA-N 1-morpholin-4-ylprop-2-en-1-one Chemical compound C=CC(=O)N1CCOCC1 XLPJNCYCZORXHG-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229920001807 Urea-formaldehyde Polymers 0.000 claims description 10
- CSCPPACGZOOCGX-UHFFFAOYSA-N acetone Substances CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 8
- 239000001301 oxygen Substances 0.000 abstract description 8
- 229910052760 oxygen Inorganic materials 0.000 abstract description 8
- 230000005764 inhibitory process Effects 0.000 abstract description 6
- 238000007639 printing Methods 0.000 abstract description 5
- 239000000853 adhesive Substances 0.000 abstract description 4
- 230000001070 adhesive effect Effects 0.000 abstract description 4
- XMLYCEVDHLAQEL-UHFFFAOYSA-N 2-hydroxy-2-methyl-1-phenylpropan-1-one Chemical compound CC(C)(O)C(=O)C1=CC=CC=C1 XMLYCEVDHLAQEL-UHFFFAOYSA-N 0.000 abstract description 2
- 239000011347 resin Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 238000001723 curing Methods 0.000 description 8
- 238000003848 UV Light-Curing Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 3
- 125000000217 alkyl group Chemical group 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000000016 photochemical curing Methods 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004100 electronic packaging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000005337 ground glass Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 230000003678 scratch resistant effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2312/00—Crosslinking
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a photocureable coating for a teaching blackboard, which consists of the following components in percentage by weight: aliphatic polyurethane triacrylate, 1,6 hexanediol diacrylate, ethylene glycol diglycidyl ether, alkyl modified organosiloxanes, hydroxytoluene butyl ester, organic thermosetting polymethylurea resin, 4-acryloylmorpholine, 2-hydroxy-2-methyl-1-phenyl-1-propanone, sulfonyloxy ketones, Pigment BK7 and castor oil polyglycidyl ether. The photocureable coating for the teaching blackboard effectively avoids the phenomenon of oxygen inhibition of the photocureable coating, has high printing precision, and has high curing hardness, strong adhesive force to a substrate and scratch resistance.
Description
Technical Field
The invention relates to the field of blackboards, in particular to a photocureable coating for teaching blackboards.
Background
The existing blackboard generally goes through several stages such as cement blackboard, wooden blackboard, ground glass blackboard, metal blackboard, etc. The UV curing technology has the advantages of high curing speed, high production efficiency, good mechanical and physical properties, little pollution, energy conservation and the like, and is praised as a green technology. With the increasing attention of human beings on environmental protection and the development of science and technology, the UV curing market develops rapidly and is widely applied to the fields of coatings, adhesives, printing ink, electronic packaging, glass, dental restoration, photoetching imaging, biomedicine and the like. Despite the progress of UV curing technology, there still exist some problems in application, such as severe oxygen inhibition, low curing hardness, high viscosity and poor stability in the existing UV curing system.
Oxygen inhibition refers to a phenomenon in which radicals are consumed in the presence of oxygen in a radical photopolymerization system, and the polymerization reaction is affected. When a photopolymerization system is cured in air, oxygen in the air can lead the photocuring surface to be incompletely cured and sticky, thus seriously affecting the overall performance of the photocuring material, and particularly, the volume shrinkage after curing greatly affects the adhesion, hardness and the like.
Disclosure of Invention
The photocureable coating for the teaching blackboard provided by the invention can be cured without too much heat energy, the phenomenon of oxygen inhibition of the photocureable coating is effectively avoided, the printing precision is high, the surface tension of the photocureable coating for the teaching blackboard is small, and the adhesion to a base material is strong.
In order to achieve the purpose, the invention adopts the technical scheme that: the photocureable coating for the teaching blackboard comprises the following components in parts by weight: 40 parts of aliphatic polyurethane triacrylate, 40 parts of 1,6 hexanediol diacrylate, 14 parts of ethylene glycol diglycidyl ether, 1.2 parts of 4-acryloyl morpholine, 0.4 part of alkyl modified organosiloxane, 0.8 part of hydroxytoluene butyl ester, 4 parts of organic thermosetting polymethyl urea resin, 4 parts of sulfonyloxy ketone, 8 parts of 2-hydroxy-2-methyl-1-phenyl-1-acetone, 6 parts of Pigment BK7 and 18 parts of castor oil polyglycidyl ether.
The technical scheme of further improvement in the technical scheme is as follows:
1. in the scheme, the particle size of the organic thermosetting polymethyl urea resin is 5-7 mu m.
2. In the scheme, the viscosity of the photocureable coating is 20-25 cp.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages and effects:
1. the invention relates to a photocureable coating for teaching blackboards, which is characterized in that alkyl modified organic siloxane and castor oil polyglycidyl ether are added into a system to synergistically modify the photocureable coating containing aliphatic polyurethane triacrylate, 1,6 hexanediol diacrylate and ethylene glycol diglycidyl ether, so that the components are uniformly dispersed and have good compatibility; and 2-hydroxy-2-methyl-1-phenyl-1-acetone and sulfonyloxy ketone are matched, so that the crosslinking rate of each component in the photocureable coating is improved, the photocureable coating can be cured without too much heat energy, the oxygen inhibition phenomenon of the photocureable coating is effectively avoided, the printing precision is high, and the product yield is improved.
2. According to the photocureable coating for the teaching blackboard, the hydroxytoluene butyl ester and the organic thermosetting polymethyl urea resin are added into the system, so that the curing hardness of the photocureable coating is improved, and the photocureable coating is more resistant to scraping; and under the condition of not influencing the viscosity and the curing performance of the system, the surface tension of the photocureable coating containing the Pigment BK7 and the adhesive force to the base material are further improved, the process is simple, and the cost is saved.
Detailed Description
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the illustrated orientations or positional relationships, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The invention is further described below with reference to the following examples:
example (b): the photocureable coating for the teaching blackboard comprises the following components in parts by weight: 40 parts of aliphatic polyurethane triacrylate, 40 parts of 1,6 hexanediol diacrylate, 14 parts of ethylene glycol diglycidyl ether, 1.2 parts of 4-acryloyl morpholine, 0.4 part of alkyl modified organosiloxane, 0.8 part of hydroxytoluene butyl ester, 4 parts of organic thermosetting polymethyl urea resin, 4 parts of sulfonyloxy ketone, 8 parts of 2-hydroxy-2-methyl-1-phenyl-1-acetone, 6 parts of Pigment BK7 and 18 parts of castor oil polyglycidyl ether.
The particle size of the organic thermosetting polymethyl urea resin is 5-7 mu m;
the viscosity of the photocureable coating is 20-25 cp;
a preparation method of the photocureable coating for the teaching blackboard comprises the following steps:
(1) putting aliphatic polyurethane triacrylate, 1,6 hexanediol diacrylate, ethylene glycol diglycidyl ether, castor oil polyglycidyl ether and alkyl modified organosiloxane into a stirring dispersion machine, and mixing at a stirring speed of 400-600 r/min for 10-15 min to obtain a material 1;
(2) adding hydroxytoluene butyl ester, organic thermosetting polymethyl urea resin, 4-acryloyl morpholine, 2-hydroxy-2-methyl-1-phenyl-1-acetone, sulfonyloxy ketone and Pigment BK7 into the material 1 obtained in the step (1), and continuously mixing for 10-15 min at a stirring speed of 500-600 r/min to obtain a material 2;
(3) and (3) grinding the material 2 obtained in the step (2) to a particle size of 300-400 nm to obtain the photocureable coating for the teaching blackboard.
Comparative examples 1 to 3: the photocureable coating for the teaching blackboard consists of the following components in parts by weight, and is shown in table 2:
TABLE 1
| Components | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| Aliphatic polyurethane triacrylate | 32 portions of | 26 portions of | 38 portions of |
| 1,6 hexanediol diacrylate | 41 portions of | 48 portions of | 36 portions of |
| Ethylene glycol diglycidyl ether | 10 portions of | 13 portions of | 11 portions of |
| 4-acryloyl morpholine | 0.8 portion of | 1.0 part | 1.2 parts of |
| Alkyl modified organosiloxane | - | 0.3 part | 0.4 portion of |
| Hydroxytoluene butyl ester | 0.5 portion | 0.7 portion of | - |
| Organic thermosetting polymethyl urea resin | 3 portions of | 2 portions of | - |
| Sulfonyloxy ketones | 3 portions of | - | 5 portions of |
| 2-hydroxy-2-methyl-1-phenyl-1-propanone | 7 portions of | - | 9 portions of |
| Pigment BK7 | 8 portions of | 9 portions of | 6 portions of |
| Castor oil polyglycidyl ether | - | 12 portions of | 18 portions of |
The indexes of the tests of the present example and the comparative example are shown in Table 2:
TABLE 2
| Test items | Examples | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| Hardness of | 3H | 2H | 2H | 1H |
| Viscosity of the oil | 23 | 29 | 27 | 26 |
| Adhesion force | 4B | 3B | 3B | 2B |
| Material shrinkage (%) | 1.02 | 0.90 | 1.10 | 0.89 |
| Open time(s) | 12s | 20s | 22s | 19s |
；
As can be seen from Table 2, the photocurable coating for teaching blackboards has low viscosity, strong adhesion and short curing time. The alkyl modified organic siloxane and the castor oil polyglycidyl ether are added into the light-cured coating for the teaching blackboard to synergistically modify the light-cured coating for the teaching blackboard containing the aliphatic polyurethane triacrylate, the 1,6 hexanediol diacrylate and the ethylene glycol diglycidyl ether, so that the components are uniformly dispersed and have good compatibility; 2-hydroxy-2-methyl-1-phenyl-1-acetone and sulfonyloxy ketone are matched, so that the crosslinking rate of each component in the photocureable coating is improved, the photocureable coating for the teaching blackboard can be cured without too much heat energy, the oxygen inhibition phenomenon of the photocureable coating is effectively avoided, the printing precision is high, and the product yield is improved; secondly, the hydroxyl toluene butyl ester and the organic thermosetting polymethyl urea resin are added into the system, so that the curing hardness of the photocureable coating is improved, and the photocureable coating for the teaching blackboard is more scratch-resistant; and under the condition of not influencing the viscosity and the curing performance of the system, the surface tension of the photocureable coating containing the Pigment BK7 and the adhesive force to the base material are further improved, the process is simple, and the cost is saved.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (3)
1. The light-cured coating for the teaching blackboard is characterized in that: the photocureable coating consists of the following components in parts by weight: 40 parts of aliphatic polyurethane triacrylate, 40 parts of 1,6 hexanediol diacrylate, 14 parts of ethylene glycol diglycidyl ether, 1.2 parts of 4-acryloyl morpholine, 0.4 part of alkyl modified organosiloxane, 0.8 part of hydroxytoluene butyl ester, 4 parts of organic thermosetting polymethyl urea resin, 4 parts of sulfonyloxy ketone, 8 parts of 2-hydroxy-2-methyl-1-phenyl-1-acetone, 6 parts of Pigment BK7 and 18 parts of castor oil polyglycidyl ether.
2. The photocurable coating for teaching blackboard according to claim 1, characterized in that: the viscosity of the photocureable coating is 20-25 cp.
3. The photocurable coating for teaching blackboard according to claim 1, characterized in that: the particle size of the organic thermosetting polymethyl urea resin is 5-7 mu m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110539503.6A CN113563793B (en) | 2018-09-30 | 2018-09-30 | Photocureable coating for teaching blackboard |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110539503.6A CN113563793B (en) | 2018-09-30 | 2018-09-30 | Photocureable coating for teaching blackboard |
| CN201811155210.2A CN109280479B (en) | 2018-09-30 | 2018-09-30 | Light-cured coating for blackboard |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811155210.2A Division CN109280479B (en) | 2018-09-30 | 2018-09-30 | Light-cured coating for blackboard |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113563793A true CN113563793A (en) | 2021-10-29 |
| CN113563793B CN113563793B (en) | 2022-09-23 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110539503.6A Active CN113563793B (en) | 2018-09-30 | 2018-09-30 | Photocureable coating for teaching blackboard |
| CN201811155210.2A Active CN109280479B (en) | 2018-09-30 | 2018-09-30 | Light-cured coating for blackboard |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811155210.2A Active CN109280479B (en) | 2018-09-30 | 2018-09-30 | Light-cured coating for blackboard |
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| Country | Link |
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| CN (2) | CN113563793B (en) |
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|---|---|---|---|---|
| CN101979449A (en) * | 2010-11-30 | 2011-02-23 | 中国乐凯胶片集团公司 | Ultraviolet curing coating for white board |
| CN102159331A (en) * | 2008-07-18 | 2011-08-17 | 埃迪尔油漆公司 | Ambient cure solvent-based coatings for writable-erasable surfaces |
| CN102656205A (en) * | 2009-12-17 | 2012-09-05 | 埃西勒国际通用光学公司 | Heat-curable epoxy functional composition and transparent heat-cured caustic-resistant hard-coatings prepared therefrom |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109280479A (en) | 2019-01-29 |
| CN109280479B (en) | 2021-05-04 |
| CN113563793B (en) | 2022-09-23 |
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