CN115725232A - Ultraviolet photocuring hardening agent applied to calcium silicate board - Google Patents
Ultraviolet photocuring hardening agent applied to calcium silicate board Download PDFInfo
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- CN115725232A CN115725232A CN202211249453.9A CN202211249453A CN115725232A CN 115725232 A CN115725232 A CN 115725232A CN 202211249453 A CN202211249453 A CN 202211249453A CN 115725232 A CN115725232 A CN 115725232A
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- CN
- China
- Prior art keywords
- acrylate oligomer
- calcium silicate
- silicate board
- hardener
- coating
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Links
- 229910052918 calcium silicate Inorganic materials 0.000 title claims abstract description 78
- 239000000378 calcium silicate Substances 0.000 title claims abstract description 78
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 238000000016 photochemical curing Methods 0.000 title claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 title description 26
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims abstract description 56
- 239000004848 polyfunctional curative Substances 0.000 claims abstract description 41
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 22
- 229920000570 polyether Polymers 0.000 claims abstract description 22
- 239000000178 monomer Substances 0.000 claims abstract description 20
- 239000011347 resin Substances 0.000 claims abstract description 18
- 229920005989 resin Polymers 0.000 claims abstract description 18
- -1 siloxane urethane acrylate Chemical class 0.000 claims abstract description 17
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000004814 polyurethane Substances 0.000 claims abstract description 13
- 229920002635 polyurethane Polymers 0.000 claims abstract description 13
- 150000001412 amines Chemical class 0.000 claims abstract description 12
- 239000000080 wetting agent Substances 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 239000002318 adhesion promoter Substances 0.000 claims abstract description 8
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 3
- 238000001723 curing Methods 0.000 claims description 36
- 238000000034 method Methods 0.000 claims description 10
- NZGQHKSLKRFZFL-UHFFFAOYSA-N 4-(4-hydroxyphenoxy)phenol Chemical compound C1=CC(O)=CC=C1OC1=CC=C(O)C=C1 NZGQHKSLKRFZFL-UHFFFAOYSA-N 0.000 claims description 8
- XRMBQHTWUBGQDN-UHFFFAOYSA-N [2-[2,2-bis(prop-2-enoyloxymethyl)butoxymethyl]-2-(prop-2-enoyloxymethyl)butyl] prop-2-enoate Chemical compound C=CC(=O)OCC(COC(=O)C=C)(CC)COCC(CC)(COC(=O)C=C)COC(=O)C=C XRMBQHTWUBGQDN-UHFFFAOYSA-N 0.000 claims description 8
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 8
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 8
- PUGOMSLRUSTQGV-UHFFFAOYSA-N 2,3-di(prop-2-enoyloxy)propyl prop-2-enoate Chemical compound C=CC(=O)OCC(OC(=O)C=C)COC(=O)C=C PUGOMSLRUSTQGV-UHFFFAOYSA-N 0.000 claims description 7
- NDWUBGAGUCISDV-UHFFFAOYSA-N 4-hydroxybutyl prop-2-enoate Chemical compound OCCCCOC(=O)C=C NDWUBGAGUCISDV-UHFFFAOYSA-N 0.000 claims description 5
- 238000003848 UV Light-Curing Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 4
- 125000005907 alkyl ester group Chemical group 0.000 claims description 4
- 125000005442 diisocyanate group Chemical group 0.000 claims description 4
- VFHVQBAGLAREND-UHFFFAOYSA-N diphenylphosphoryl-(2,4,6-trimethylphenyl)methanone Chemical compound CC1=CC(C)=CC(C)=C1C(=O)P(=O)(C=1C=CC=CC=1)C1=CC=CC=C1 VFHVQBAGLAREND-UHFFFAOYSA-N 0.000 claims description 4
- 239000000839 emulsion Substances 0.000 claims description 4
- 239000006260 foam Substances 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 4
- GUCYFKSBFREPBC-UHFFFAOYSA-N [phenyl-(2,4,6-trimethylbenzoyl)phosphoryl]-(2,4,6-trimethylphenyl)methanone Chemical compound CC1=CC(C)=CC(C)=C1C(=O)P(=O)(C=1C=CC=CC=1)C(=O)C1=C(C)C=C(C)C=C1C GUCYFKSBFREPBC-UHFFFAOYSA-N 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- 239000002904 solvent Substances 0.000 claims description 2
- 239000012956 1-hydroxycyclohexylphenyl-ketone Substances 0.000 claims 1
- MQDJYUACMFCOFT-UHFFFAOYSA-N bis[2-(1-hydroxycyclohexyl)phenyl]methanone Chemical compound C=1C=CC=C(C(=O)C=2C(=CC=CC=2)C2(O)CCCCC2)C=1C1(O)CCCCC1 MQDJYUACMFCOFT-UHFFFAOYSA-N 0.000 claims 1
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical group OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims 1
- 238000000576 coating method Methods 0.000 abstract description 73
- 239000011248 coating agent Substances 0.000 abstract description 68
- 239000000853 adhesive Substances 0.000 abstract description 17
- 230000001070 adhesive effect Effects 0.000 abstract description 17
- 210000002615 epidermis Anatomy 0.000 abstract description 5
- 230000000052 comparative effect Effects 0.000 description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
- 230000005587 bubbling Effects 0.000 description 13
- 230000008859 change Effects 0.000 description 12
- 239000011247 coating layer Substances 0.000 description 11
- 238000012360 testing method Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 8
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 7
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 6
- 238000005336 cracking Methods 0.000 description 6
- 238000006116 polymerization reaction Methods 0.000 description 5
- 239000010410 layer Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 210000003491 skin Anatomy 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- QNODIIQQMGDSEF-UHFFFAOYSA-N (1-hydroxycyclohexyl)-phenylmethanone Chemical compound C=1C=CC=CC=1C(=O)C1(O)CCCCC1 QNODIIQQMGDSEF-UHFFFAOYSA-N 0.000 description 2
- LXOFYPKXCSULTL-UHFFFAOYSA-N 2,4,7,9-tetramethyldec-5-yne-4,7-diol Chemical group CC(C)CC(C)(O)C#CC(C)(O)CC(C)C LXOFYPKXCSULTL-UHFFFAOYSA-N 0.000 description 2
- 239000006087 Silane Coupling Agent Substances 0.000 description 2
- 125000001931 aliphatic group Chemical group 0.000 description 2
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000002987 primer (paints) Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 description 1
- 241000544076 Whipplea modesta Species 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000001588 bifunctional effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 238000007542 hardness measurement Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007761 roller coating Methods 0.000 description 1
- 239000004447 silicone coating Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention relates to an ultraviolet photocuring hardener applied to a calcium silicate board, and relates to the technical field of coatings; the coating comprises the following components in parts by weight: 10-20 parts of UV resin; 0-80 parts of UV monomer; 3-5 parts of a photoinitiator; 0.1-0.5 part of wetting agent; 0.1-0.5 part of defoaming agent; 1-3 parts of an adhesion promoter; the UV resin is a mixture of acrylate oligomer, amine modified polyether acrylate oligomer and siloxane urethane acrylate oligomer. Based on the characteristics of low density and sparse surface of the calcium silicate board, the mixture of the acrylate oligomer, the amine modified polyether acrylate oligomer and the siloxane polyurethane acrylate oligomer is used as the UV resin, and the UV monomer and other auxiliaries are combined, so that the system has low viscosity, low surface tension and good wettability, can well penetrate into the deep of the epidermal layer of the calcium silicate board, and can improve the adhesive force.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to an ultraviolet photocuring hardening agent applied to a calcium silicate board.
Background
The calcium silicate board for decoration has the advantages of fire resistance, sinking resistance, multiple varieties and the like, and is widely applied to the fields of industrial boards such as walls, suspended ceilings, floors, furniture, road sound insulation, sound absorption barriers, ship compartments, air ducts and the like, sound absorption walls, sound absorption ceilings, poured walls, panels of composite wallboards and the like; with the improvement of the requirements on energy conservation and emission reduction, the calcium silicate board breaks through from the public building market to the residential market, and the calcium silicate board product replaces more solid clay bricks to be used as the residential partition wall, so the coating of the calcium silicate board is particularly important.
However, in the process of coating the calcium silicate board, because the density of the calcium silicate board is low and the surface layer is loose, if the coating for coating is directly coated on the surface layer of the calcium silicate board, the problem of poor adhesion between the coating layer and the calcium silicate board exists, and the application of the calcium silicate board is limited.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the invention provides an ultraviolet light curing hardening agent applied to a calcium silicate board, which is used for solving the problem of poor adhesive force between a coating layer and the calcium silicate board when the coating is directly coated on the surface of the calcium silicate board.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the ultraviolet photocuring hardener applied to the calcium silicate board comprises the following components in parts by weight:
the UV resin is a mixture of an acrylate oligomer, an amine-modified polyether acrylate oligomer and a siloxane urethane acrylate oligomer.
Optionally, the acrylate oligomer is a solvent-borne acrylate oligomer.
Optionally, the amine-modified polyether acrylate oligomer is an aliphatic amine-modified polyether acrylate oligomer.
Alternatively, the siloxane urethane acrylate oligomer is prepared as follows: mixing diisocyanate and dibutyltin dilaurate, stirring and heating to 60 ℃, dropwise adding N, N-bis (aminopropyl triethoxy) silane, reacting for 2 hours at 70 ℃, adding 4-hydroxy butyl acrylate and p-hydroxy phenyl ether, and reacting until-NCO disappears to obtain the siloxane polyurethane acrylate oligomer.
Optionally, the mass ratio of the acrylate oligomer, the amine-modified polyether acrylate oligomer, and the siloxane urethane acrylate oligomer is 5:3:12.
optionally, the UV monomer is selected from at least one of 3-hydroxy-2,2-dimethylpropyl diacrylate, propoxylated glycerol triacrylate, ditrimethylolpropane tetraacrylate.
Optionally, the photoinitiator is selected from at least one of 2,4,6-trimethylbenzoyl-diphenylphosphine oxide, 1-hydroxy-cyclohexyl-phenyl-methanone, phenyl bis (2,4,6-trimethylbenzoyl) phosphine oxide.
Optionally, the wetting agent is a silicone coating wetting agent.
Optionally, the defoamer is a silicone-free foam breaking polymer emulsion.
Optionally, the adhesion promoter is a terminal alkyl ester polyalkenyl compound.
The invention has the beneficial effects that:
the ultraviolet light curing hardener applied to the calcium silicate board is based on the characteristics of low density and sparse surface of the calcium silicate board, a mixture of acrylate oligomer, amine modified polyether acrylate oligomer and siloxane polyurethane acrylate oligomer is used as UV resin, and UV monomers and other auxiliaries are combined, so that a system has low viscosity, low surface tension and good wettability, and when the hardener is used for the calcium silicate board, the hardener can well penetrate into the deep part of an epidermal layer of the calcium silicate board, and then the hardener on the surface of the calcium silicate board and the deep part of the epidermal layer can generate chain reaction through UV lamp radiation to carry out polymerization, so that a high-density and high-hardness UV hardening coating is formed on the calcium silicate board, and the surface hardness of the calcium silicate board is effectively improved; the hardening agent can penetrate into the deep skin layer of the calcium silicate board, so that the hardening agent positioned in the deep skin layer of the calcium silicate board can also generate polymerization reaction in the curing process, thereby improving the surface hardness of the calcium silicate board and simultaneously improving the adhesive force between the hardened coating and the calcium silicate board; meanwhile, the hardened coating and the coating are both UV cured coatings, so that the adhesive force between the coating and the hardened coating is improved, and the adhesive force between the coating and the calcium silicate board is improved.
Detailed Description
The present invention will now be described in further detail. The embodiments described below are exemplary and are intended to be illustrative of the present invention and should not be construed as limiting the present invention, and all other embodiments that can be obtained by one of ordinary skill in the art based on the embodiments of the present invention without inventive step fall within the scope of the present invention.
In order to solve the problem of poor adhesive force between a coating layer and a calcium silicate board when a coating for coating is directly coated on the surface of the calcium silicate board in the prior art, the invention provides an ultraviolet light curing hardener applied to the calcium silicate board, and the hardener comprises the following components in parts by weight:
wherein the UV resin is a mixture of an acrylate oligomer, an amine-modified polyether acrylate oligomer, and a silicone urethane acrylate oligomer.
In the use process of the hardening agent, before the existing coating for coating is coated, the ultraviolet light curing hardening agent applied to the calcium silicate board is coated on the surface of the calcium silicate board, and then the ultraviolet light curing hardening agent is cured by a UV curing machine to obtain a hardened coating, and the coating for coating is coated on the hardened coating, so that the adhesion between the coating and the calcium silicate board is effectively improved, and the surface hardness of the calcium silicate board is improved.
In addition, most of the existing coating for coating the calcium silicate board is UV curing coating, so that the hardening agent provided by the invention is an ultraviolet light curing hardening agent, which is beneficial to further improving the adhesive force between the hardening coating and the UV curing coating, thereby improving the adhesive force between the coating and the calcium silicate board.
The ultraviolet light curing hardener applied to the calcium silicate board is based on the characteristics of low density and sparse surface of the calcium silicate board, a mixture of acrylate oligomer, amine modified polyether acrylate oligomer and siloxane polyurethane acrylate oligomer is used as UV resin, and UV monomers and other auxiliaries are combined, so that a system has low viscosity, low surface tension and good wettability, and when the hardener is used for the calcium silicate board, the hardener can well penetrate into the deep part of an epidermal layer of the calcium silicate board, and then the hardener on the surface of the calcium silicate board and the deep part of the epidermal layer can generate chain reaction through UV lamp radiation to carry out polymerization, so that a high-density and high-hardness UV hardening coating is formed on the calcium silicate board, and the surface hardness of the calcium silicate board is effectively improved; the hardening agent can penetrate into the deep skin layer of the calcium silicate board, so that the hardening agent positioned in the deep skin layer of the calcium silicate board can also generate polymerization reaction in the curing process, thereby improving the surface hardness of the calcium silicate board and simultaneously improving the adhesive force between the hardened coating and the calcium silicate board; meanwhile, the hardened coating and the coating are both UV cured coatings, so that the adhesive force between the coating and the hardened coating is favorably improved, and the adhesive force between the coating and the calcium silicate board is favorably improved.
According to the invention, the UV resin is preferably a mixture of acrylate oligomer, amine modified polyether acrylate oligomer and siloxane polyurethane acrylate oligomer, and the acrylate oligomer is further preferably a solvent-containing acrylate oligomer, so that the adhesive force between the hardened coating and the calcium silicate board is improved, the adhesive force between the hardened coating and the coating is improved, and the workability of the hardening agent is improved; specifically, the acrylate oligomer is preferably 6071 from chang special materials (zhhai) limited; the activity of a hardening agent is improved by adding the amine modified polyether acrylate oligomer, the curing speed is improved, and the chemical resistance and the adhesive force of a hardened coating are improved; specifically, the amine-modified polyether acrylate oligomer is preferably an aliphatic amine-modified polyether acrylate oligomer, and is further preferably basf Laromer PO94F, germany; by adding the siloxane urethane acrylate oligomer, on one hand, the curing speed of the system is improved, the full curing of the hardened coating is ensured, and on the other hand, the water resistance and the weather resistance of the hardened coating are improved; the siloxane urethane acrylate oligomer can be purchased directly, and in order to ensure that the ultraviolet light curing hardener can be cured and dried sufficiently when used for a calcium silicate board, the siloxane urethane acrylate oligomer is preferably prepared according to the following method:
mixing hexamethylene diisocyanate and dibutyltin dilaurate (preferably, the mass ratio of hexamethylene diisocyanate to dibutyltin dilaurate is 100.15), stirring and heating to 60 ℃, and dropwise adding N, N-bis (aminopropyltriethoxy) silane (G402 silane coupling agent), preferably, the molar ratio of NCO to amino is 2:1, reacting at 70 ℃ for 2h, adding 4-hydroxybutyl acrylate (preferably the molar ratio of NCO to hydroxyl is 1:1) and p-hydroxy phenyl ether (preferably the mass ratio of hexamethylene diisocyanate to p-hydroxy phenyl ether is 100.10), and reacting until-NCO disappears to obtain the siloxane polyurethane acrylate oligomer.
The siloxane polyurethane acrylate oligomer obtained by the preparation method is a light/moisture dual-cured siloxane polyurethane acrylate oligomer, namely the oligomer has the characteristic of light/moisture dual curing, and when the hardening agent penetrates into the deep part of the surface layer of the calcium silicate board, the hardening agent can react with water molecules in the air or water molecules in the base material of the calcium silicate board even under the condition of no ultraviolet light or weak light, and is continuously cured, so that the hardening agent is fully cured and dried in application; meanwhile, the oligomer contains alkyl groups to participate in the reaction, so that excellent water resistance and weather resistance are provided for the hardened coating, and the hardened coating has excellent toughness.
In order to ensure the comprehensive performance of the hardened coating, the mass ratio of the acrylate oligomer, the amine modified polyether acrylate oligomer and the siloxane polyurethane acrylate oligomer in the UV resin is preferably (3-5): 3:12; the UV resin takes the siloxane polyurethane acrylate oligomer as the main resin to ensure that the hardened coating can be fully cured, and then the UV resin is compounded with the acrylate oligomer and the amine modified polyether acrylate oligomer to ensure that the prepared hardened coating has the characteristics of high curing speed, good adhesive force, high hardness, good water resistance and good weather resistance, and has excellent adhesive force with the coating so as to avoid the coating from falling off.
The UV monomer is preferably selected from at least one of difunctional monomer, trifunctional monomer and multifunctional monomer; specifically, the UV monomer is preferably at least one selected from the group consisting of bifunctional monomer 3-hydroxy-2,2-dimethylpropyl diacrylate, trifunctional monomer propoxylate glycerol triacrylate and polyfunctional monomer ditrimethylolpropane tetraacrylate; and further preferably, the UV monomer is 3-hydroxy-2,2-dimethylpropyl diacrylate, a mixture of propoxylated glycerol triacrylate and ditrimethylolpropane tetraacrylate, wherein the mass ratio of 3-hydroxy-2,2-dimethylpropyl diacrylate, propoxylated glycerol triacrylate and ditrimethylolpropane tetraacrylate ranges from (30-50): (10-20): (10-25); wherein the 3-hydroxy-2,2-dimethylpropyl diacrylate is helpful for reducing the viscosity of the hardening agent and improving the water resistance and toughness of the hardened coating; the glycerol propoxylate triacrylate is beneficial to improving the curing speed of the hardening agent, improving the wettability of the hardening agent and the calcium silicate board and improving the hardness and toughness of the hardened coating; the ditrimethylolpropane tetraacrylate is beneficial to improving the hardening speed of the hardening agent and improving the crosslinking density, water resistance, chemical resistance and hardness of the hardened coating; the comprehensive performance of the hardener is improved by compounding 3-hydroxy-2,2-dimethylpropyl diacrylate, propoxylated glycerol triacrylate and ditrimethylolpropane tetraacrylate; specifically, 3-hydroxy-2,2-dimethylpropyl diacrylate is preferably EM2202 of the Changxing specialty materials (Zhuhai) Co., ltd, propoxylated glycerin triacrylate is preferably EM2387 of the Changxing specialty materials (Zhuhai) Co., ltd, and ditrimethylolpropane tetraacrylate is preferably EM242-TF of the Changxing specialty materials (Zhuhai) Co., ltd.
Preferred photoinitiators according to the invention are selected from at least one of 2,4,6-trimethylbenzoyl-diphenylphosphine oxide (TPO), 1-hydroxy-cyclohexyl-phenyl-methanone (184), phenyl-bis (2,4,6-trimethylbenzoyl) phosphine oxide (819).
In order to reduce the liquid surface tension of the hardener, make it have excellent anti-cratering effect, and improve its levelling property, make it have good recoatability, and promote the fluidity of the levelling agent, the invention prefers the wetting agent to be organosilicon coating wetting agent, and particularly prefers the organosilicon coating wetting agent to be digao TEGO substrate wetting agent Wet 270.
In order to prevent the generation of micro bubbles and pinholes in the hardener, the defoaming agent is preferably a foam breaking polymer emulsion without organic silicon, and particularly preferably the foam breaking polymer emulsion without organic silicon is digao TEGO 920.
According to the invention, the preferable adhesion promoter is an end alkyl ester polyene compound, so that the end alkyl ester polyene compound participates in photo-initiated polymerization, and an alkyl ester group with adhesion and water resistance functions is brought into a cured hardened coating, so that the hardened coating has good adhesion and water resistance to a calcium silicate board substrate, and the end alkyl ester polyene compound has good compatibility with UV resin in a system, thereby being beneficial to improving the comprehensive performance of the hardening agent; specifically, the terminal alkyl ester polyalkenyl compound is preferably AH-170 of Yixingming chemical Co., ltd.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, specific embodiments thereof are described in detail below.
The siloxane urethane acrylate oligomers in the examples of the present invention and the comparative examples were prepared according to the following methods, unless otherwise specified:
mixing hexamethylene diisocyanate and dibutyltin dilaurate (the mass ratio of hexamethylene diisocyanate to dibutyltin dilaurate is 100.15), stirring and heating to 60 ℃, and dropwise adding N, N-bis (aminopropyltriethoxy) silane (G402 silane coupling agent), wherein the molar ratio of NCO to amino is preferably 2:1, reacting at 70 ℃ for 2h, adding 4-hydroxybutyl acrylate (preferably the molar ratio of NCO to hydroxyl is 1:1) and p-hydroxy phenyl ether (the mass ratio of hexamethylene diisocyanate to p-hydroxy phenyl ether is 100.10) and reacting until-NCO disappears to obtain the siloxane polyurethane acrylate oligomer.
Example 1
The embodiment provides an ultraviolet light curing hardener applied to a calcium silicate board, which comprises the following components in parts by weight:
example 2
The embodiment provides an ultraviolet light curing hardener applied to a calcium silicate board, which comprises the following components in parts by weight:
example 3
The embodiment provides an ultraviolet light curing hardener applied to a calcium silicate board, which comprises the following components in parts by weight:
example 4
The embodiment provides an ultraviolet light curing hardener applied to a calcium silicate board, which comprises the following components in parts by weight:
example 5
The embodiment provides an ultraviolet light curing hardener applied to a calcium silicate board, which comprises the following components in parts by weight:
example 6
The embodiment provides an ultraviolet light curing hardener applied to a calcium silicate board, which comprises the following components in parts by weight:
comparative example 1
The comparative example provides an ultraviolet light curing hardener applied to a calcium silicate board, and the hardener comprises the following components in parts by weight:
comparative example 2
The comparative example provides an ultraviolet light curing hardener applied to a calcium silicate board, and the hardener comprises the following components in parts by weight:
comparative example 3
The comparative example provides an ultraviolet light curing hardener applied to a calcium silicate board, and the hardener comprises the following components in parts by weight:
comparative example 4
This comparative example differs from example 1 in that the siloxane urethane acrylate oligomer was prepared as follows:
mixing diisocyanate and dibutyltin dilaurate (the mass ratio of the diisocyanate to the dibutyltin dilaurate is 100: 0.15), stirring and heating to 60 ℃, and dropwise adding (3-aminopropyl) trimethoxysilane, wherein the molar ratio of NCO to amino is preferably 2:1, reacting at 70 ℃ for 2h, adding 4-hydroxybutyl acrylate (preferably the molar ratio of NCO to hydroxyl is 1:1) and p-hydroxy phenyl ether (the mass ratio of hexamethylene diisocyanate to p-hydroxy phenyl ether is 100.10) and reacting until-NCO disappears to obtain the siloxane polyurethane acrylate oligomer.
Comparative example 5
The present comparative example differs from example 1 in that it is produced by Zhan Xin resin (Shanghai) Co., ltd
The LED 03 replaces amine modified polyether acrylate oligomer Laromer PO94F.
Comparative example 6
The comparative example differs from example 1 in that 6071 is replaced by ETERCURE 6145-100 from Changxing specialty materials (Zhuhai) Co., ltd.
Comparative example 7
This comparative example differs from example 1 in that EM2202 is replaced by Changxing specialty materials (Zhuhai) Inc. EM 221.
Comparative example 8
This comparative example differs from example 1 in that EM2387 is replaced by EM331, a Changxing specialty materials (pearl sea) Co., ltd.
Comparative example 9
The comparative example differs from example 1 in that the wetting agent is Surfynol 104BC, us gas chemistry.
Comparative example 10
This comparative example differs from example 1 in that the adhesion promoter is Zhanxin EBECRYL 375.
Comparative example 11
This comparative example differs from example 1 in that the adhesion promoter is Elementis hamming sied modesty adhesion promoter Adherant 1121.
Comparative example 12
The comparative example was a direct UV primer coating and a fluorocarbon top coat coating on a calcium silicate board.
In order to conveniently test the performance of the hardeners provided by each example and each comparative example, the components of the examples 1 to 6 and the comparative examples 1 to 11 are uniformly mixed to obtain the hardener; cleaning the surface of the calcium silicate plate, and roller-coating the calcium silicate plate by a sponge roller once by 30-50 g/m 2 Curing the hardening agent obtained in each embodiment and the comparative example by using a UV curing machine to obtain a hardened coating; the hardened coating is coated with UV primer sanding for three times, fluorocarbon finish paint is sprayed for one time, and after the hardened coating is cured, the following performance tests are carried out:
1. soaking in boiling water at 98 deg.C for 4 hr.
2. And (3) testing the adhesive force: the test was performed according to the standard GB/T4893.4-2013 adhesion cross-cut assay.
3. And (3) hardness testing: the test was carried out according to the standard GB6739-86 pencil method for film hardness.
4. High and low temperature cycle test for seven days: according to the standard GB4893.7-2013 furniture surface paint film cold and hot resistant temperature difference measuring method.
The test results are shown in table 1:
TABLE 1
| Test items | Blister test | Adhesion (grade) | Hardness (H) | High and low temperature testing |
| Example 1 | No change on the surface | 1 | 2 | No change on the surface |
| Example 2 | No change on the surface | 1 | 2 | No change on the surface |
| Example 3 | No change on the surface | 1 | 2 | No change on the surface |
| Example 4 | No change on the surface | 1 | 2 | No change on the surface |
| Example 5 | No change on the surface | 1 | 2 | No change on the surface |
| Example 6 | No change on the surface | 1 | 2 | No change on the surface |
| Comparative example 1 | Fall off | 2 | 1 | Bubbling and falling off |
| Comparative example 2 | Falling off | 2 | 2 | Bubbling and falling off |
| Comparative example 3 | Falling off and bubbling | 2 | 2 | Cracking and falling off |
| Comparative example 4 | Bubbling and cracking | 1 | 3 | Crack(s) |
| Comparative example 5 | Bubbling and cracking | 1 | 2 | Bubbling device |
| Comparative example 6 | Bubbling and cracking | 2 | 3 | Crack(s) |
| Comparative example 7 | Falling off | 2 | 3 | Bubbling and cracking |
| Comparative example 8 | Falling off | 2 | 3 | Bubbling and cracking |
| Comparative example 9 | Bubbling device | 1 | 2 | Bubbling device |
| Comparative example 10 | Falling off | 3 | 2 | Bubbling device |
| Comparative example 11 | Falling off | 3 | 2 | Bubbling device |
| Comparative example 12 | Falling off | 3 | HB | Falling off |
From the above data, it can be seen that the coating layer obtained by applying the curing agent of the present invention to a calcium silicate board to prepare a cured coating layer and then coating the cured coating layer has excellent adhesion, high hardness, and excellent water resistance and weather resistance.
Compared with the example 1, the UV resin is not added with the amine modified polyether acrylate oligomer, so that the surface drying speed of the obtained coating becomes slow, the coating is not beneficial to construction, the adhesion between the coatings is influenced, the hardness of the coating is reduced, and meanwhile, the water resistance and the weather resistance become poor;
comparative example 2 compared with example 1, the adhesion of the obtained coating layer is deteriorated without adding acrylate oligomer to the UV resin;
comparative example 3 compared to example 1, the UV resin without the siloxane urethane acrylate oligomer added was detrimental to water resistance, curing, and cold heat cycle testing of the hardener; the adhesion of the obtained coating is reduced, and the water resistance and the weather resistance are deteriorated;
comparative example 4 compared with example 1, by replacing the siloxane in the preparation process of the siloxane urethane acrylate oligomer, the resulting coating layer had poor storage stability and poor water resistance and weather resistance, although the hardness was increased;
comparative example 5 compared with example 1, the amine-modified polyether acrylate oligomer was replaced, and the prepared coating layer still had good adhesion and surface hardness, but both water resistance and weather resistance were deteriorated;
compared with the example 1, the coating prepared by replacing the acrylate oligomer has poor adhesion, and the water resistance and the weather resistance are influenced;
compared with the embodiment 1, the dual-functional monomer and the tri-functional monomer are respectively replaced in the comparative examples 7 and 8, the prepared coating layer becomes hard and brittle, the adhesion is poor, and the wettability of the EM221 monomer and the EM331 monomer is inferior to that of the monomer in the embodiment 1, so that the adhesion and the coating effect are influenced to a certain extent;
compared with the example 1, the wetting agent is replaced in the comparative example 9, the wettability of the prepared coating is poor, and the Surfynol 104BC can not fully play a wetting role in the system, so that the performances of the coating are obviously reduced;
in comparative examples 10 and 11, the adhesion promoter was replaced, and the coating layers prepared by the method were significantly reduced in adhesion and water resistance, and also deteriorated in surface hardness and weather resistance, as compared with example 1.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. The ultraviolet photocuring hardener applied to the calcium silicate board is characterized by comprising the following components in parts by weight:
the UV resin is a mixture of an acrylate oligomer, an amine-modified polyether acrylate oligomer and a siloxane urethane acrylate oligomer.
2. The ultraviolet light curing hardener as set forth in claim 1, wherein said acrylate oligomer is a solvent-based acrylate oligomer.
3. The ultraviolet curing hardener for calcium silicate boards of claim 1 wherein the amine modified polyether acrylate oligomer is an aliphatic amine modified polyether acrylate oligomer.
4. The ultraviolet curing hardener for calcium silicate boards as claimed in claim 1 wherein the siloxane urethane acrylate oligomer is prepared by the following method: mixing diisocyanate and dibutyltin dilaurate, stirring and heating to 60 ℃, dropwise adding N, N-bis (aminopropyl triethoxy) silane, reacting for 2 hours at 70 ℃, adding 4-hydroxy butyl acrylate and p-hydroxy phenyl ether, and reacting until-NCO disappears to obtain the siloxane polyurethane acrylate oligomer.
5. The ultraviolet light curing hardener for calcium silicate boards as claimed in claim 1 wherein the mass ratio of the acrylate oligomer, the amine modified polyether acrylate oligomer and the siloxane urethane acrylate oligomer is 5:3:12.
6. the ultraviolet curing hardener for calcium silicate boards as set forth in any one of claims 1 to 5 wherein said UV monomer is at least one selected from the group consisting of 3-hydroxy-2,2-dimethylpropyl diacrylate, propoxylated glycerol triacrylate, ditrimethylolpropane tetraacrylate.
7. The UV light curing hardener for calcium silicate boards as claimed in claim 6 wherein the photoinitiator is at least one selected from the group consisting of 2,4,6-trimethylbenzoyl-diphenylphosphine oxide, 1-hydroxy-cyclohexyl-phenyl ketone, and phenyl bis (2,4,6-trimethylbenzoyl) phosphine oxide.
8. The ultraviolet light curing hardener as set forth in claim 6, wherein said wetting agent is a silicone paint wetting agent.
9. The ultraviolet curing hardener as set forth in claim 6, wherein said defoaming agent is a silicone-free foam breaking polymer emulsion.
10. The ultraviolet curing hardener for calcium silicate boards as set forth in claim 6 wherein said adhesion promoter is a terminal alkyl ester polyalkenyl compound.
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| CN116333570A (en) * | 2023-04-04 | 2023-06-27 | 广东希贵光固化材料有限公司 | Ultraviolet light curing coating for polyurethane glass fiber composite material |
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