CN111500162A - EB (Epstein-Barr) curing formaldehyde-removing coating - Google Patents
EB (Epstein-Barr) curing formaldehyde-removing coating Download PDFInfo
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- CN111500162A CN111500162A CN202010484133.6A CN202010484133A CN111500162A CN 111500162 A CN111500162 A CN 111500162A CN 202010484133 A CN202010484133 A CN 202010484133A CN 111500162 A CN111500162 A CN 111500162A
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- 238000000576 coating method Methods 0.000 title claims abstract description 64
- 239000011248 coating agent Substances 0.000 title claims abstract description 59
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims abstract description 102
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 43
- 238000001227 electron beam curing Methods 0.000 claims abstract description 40
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical class [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 23
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 12
- -1 acrylic ester Chemical class 0.000 claims abstract description 12
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims abstract description 11
- 239000000178 monomer Substances 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims description 51
- 239000011259 mixed solution Substances 0.000 claims description 33
- 238000006243 chemical reaction Methods 0.000 claims description 23
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 20
- 239000004202 carbamide Substances 0.000 claims description 20
- 239000002518 antifoaming agent Substances 0.000 claims description 19
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(I) nitrate Inorganic materials [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims description 16
- 238000009210 therapy by ultrasound Methods 0.000 claims description 15
- 239000002270 dispersing agent Substances 0.000 claims description 13
- 239000002562 thickening agent Substances 0.000 claims description 13
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 12
- 239000007795 chemical reaction product Substances 0.000 claims description 11
- 239000008367 deionised water Substances 0.000 claims description 11
- 229910021641 deionized water Inorganic materials 0.000 claims description 11
- 238000001027 hydrothermal synthesis Methods 0.000 claims description 11
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims description 11
- 238000001291 vacuum drying Methods 0.000 claims description 11
- MYWOJODOMFBVCB-UHFFFAOYSA-N 1,2,6-trimethylphenanthrene Chemical compound CC1=CC=C2C3=CC(C)=CC=C3C=CC2=C1C MYWOJODOMFBVCB-UHFFFAOYSA-N 0.000 claims description 8
- 239000007864 aqueous solution Substances 0.000 claims description 8
- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical compound C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 claims description 8
- DNIAPMSPPWPWGF-UHFFFAOYSA-N monopropylene glycol Natural products CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- 229940058020 2-amino-2-methyl-1-propanol Drugs 0.000 claims description 3
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 3
- KNSXNCFKSZZHEA-UHFFFAOYSA-N [3-prop-2-enoyloxy-2,2-bis(prop-2-enoyloxymethyl)propyl] prop-2-enoate Chemical class C=CC(=O)OCC(COC(=O)C=C)(COC(=O)C=C)COC(=O)C=C KNSXNCFKSZZHEA-UHFFFAOYSA-N 0.000 claims description 3
- MPIAGWXWVAHQBB-UHFFFAOYSA-N [3-prop-2-enoyloxy-2-[[3-prop-2-enoyloxy-2,2-bis(prop-2-enoyloxymethyl)propoxy]methyl]-2-(prop-2-enoyloxymethyl)propyl] prop-2-enoate Chemical compound C=CC(=O)OCC(COC(=O)C=C)(COC(=O)C=C)COCC(COC(=O)C=C)(COC(=O)C=C)COC(=O)C=C MPIAGWXWVAHQBB-UHFFFAOYSA-N 0.000 claims description 3
- CBTVGIZVANVGBH-UHFFFAOYSA-N aminomethyl propanol Chemical compound CC(C)(N)CO CBTVGIZVANVGBH-UHFFFAOYSA-N 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 229920000570 polyether Polymers 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 239000004814 polyurethane Substances 0.000 claims description 2
- 229920002635 polyurethane Polymers 0.000 claims description 2
- 230000032683 aging Effects 0.000 abstract description 8
- 238000010894 electron beam technology Methods 0.000 abstract description 8
- 238000001723 curing Methods 0.000 abstract description 7
- 239000000853 adhesive Substances 0.000 abstract description 5
- 230000001070 adhesive effect Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 238000000746 purification Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 8
- 238000003848 UV Light-Curing Methods 0.000 description 4
- 239000003960 organic solvent Substances 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical class OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000004383 yellowing Methods 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- HVVWZTWDBSEWIH-UHFFFAOYSA-N [2-(hydroxymethyl)-3-prop-2-enoyloxy-2-(prop-2-enoyloxymethyl)propyl] prop-2-enoate Chemical compound C=CC(=O)OCC(CO)(COC(=O)C=C)COC(=O)C=C HVVWZTWDBSEWIH-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 231100000357 carcinogen Toxicity 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- WMJVKNOOFUSBFQ-UHFFFAOYSA-N formaldehyde;prop-2-enoic acid Chemical compound O=C.OC(=O)C=C WMJVKNOOFUSBFQ-UHFFFAOYSA-N 0.000 description 1
- 238000007542 hardness measurement Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000002085 irritant Substances 0.000 description 1
- 231100000021 irritant Toxicity 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000001029 thermal curing Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 238000001132 ultrasonic dispersion Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
- C09D163/10—Epoxy resins modified by unsaturated compounds
-
- 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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/06—Unsaturated polyesters having carbon-to-carbon unsaturation
-
- 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
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
- C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- 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
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- 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
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- 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
Abstract
The invention relates to the technical field of coatings, in particular to an EB (Electron beam) curing formaldehyde-removing coating. In order to develop an acrylate-based EB (Epstein-Barr) curing formaldehyde-removing coating with excellent water resistance, adhesive force and aging resistance, the invention provides an EB curing formaldehyde-removing coating, which comprises the following components in parts by weight: 30-60 parts of acrylic ester, 10-15 parts of formaldehyde removing agent, 20-30 parts of active monomer, 1-5 parts of auxiliary agent and 10-15 parts of water, wherein the formaldehyde removing agent is composed of amino compound, modified graphene and diatomite. The EB curing formaldehyde-removing coating prepared by the method has the surface hardness of 2H and the adhesive force of 0 grade, has excellent aging resistance, and has good commercial application prospect, and the detection shows that the EB curing formaldehyde-removing coating can achieve the E1 grade environmental protection standard specified in the national indoor air quality standard GB18883-2002 in the formaldehyde purification amount of a closed space within 18H.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to an EB (Electron beam) curing formaldehyde-removing coating.
Background
Formaldehyde is an irritant colorless gas and a carcinogen. At present, most of thermosetting coatings used for interior decoration are solvent-based, and the problem of formaldehyde pollution is inevitable after decoration.
Although UV curable coatings do not contain organic solvents and VOC emissions, they also have certain drawbacks. A certain amount of photoinitiator must be added into a UV curing coating system, and after a coating film is cured, a small amount of photoinitiator remains in the UV curing coating system, so that the cured paint film has heavy smell, poor aging resistance and easy yellowing. In addition, UV curing requires the selection of specific photoinitiators to initiate specific reactions and can only be applied to clear or light-colored coatings.
Electron Beam (EB) curing, that is, electron beam curing, is to use an electric field to linearly accelerate an electron beam emitted from a cathode ray tube so that the energy of the electron beam reaches 100 to 400 KeV; the electron beam irradiates the coating containing unsaturated double bonds, thereby initiating the polymerization of the coating and achieving the aim of curing the coating. EB curing has the following outstanding advantages compared to conventional thermal or UV curing (liwei, gaxian, penjia, durrich (2013). research on electron beam curing of urethane acrylates, guangdong chemical, 103-:
(1) the electron and material effects are non-selective during EB curing;
(2) EB curing is not affected by the clarity of the coating;
(3) EB curing is more thorough;
(4) EB curing does not contain organic solvent and photoinitiator, the yellowing resistance of a coating film is good, and the environment is not polluted;
(5) EB curing is a room temperature curing technology with low energy consumption.
In order to reduce or reduce the harm of formaldehyde to human bodies, besides EB curing coating without organic solvent is selected, a certain amount of formaldehyde removing agent can be added into a coating system, and the formaldehyde removing agent and free formaldehyde are subjected to neutralization reaction to generate stable and irreversible resin solids.
The molecular structures of the acrylic resin and the formaldehyde removing agent in the water-based acrylate formaldehyde removing coating often have a large number of hydrophilic groups, such as carboxyl, hydroxyl, amino and the like, and the hydrophilic groups bring good water solubility to the resin and reduce the water resistance, flexibility, impact resistance, adhesion and aging resistance of a cured coating film. Therefore, the development of the acrylate-based formaldehyde-removing coating with excellent water resistance, adhesive force and aging resistance has certain commercial value.
Disclosure of Invention
Aiming at the problems in the prior art, the technical problems to be solved by the invention are as follows: how to obtain the acrylate-based formaldehyde-removing coating with excellent water resistance, adhesive force and aging resistance.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention provides an EB curing formaldehyde-removing coating which comprises the following components in parts by weight:
specifically, the auxiliary agent comprises the following components in parts by weight:
specifically, the formaldehyde removing agent comprises the following components in parts by weight:
5-8 parts of amino compound
3-5 parts of modified graphene
10-15 parts of diatomite.
Specifically, the acrylate is one or more of epoxy acrylate, polyurethane acrylate, polyester acrylate and silicon modified acrylate.
Specifically, the active monomer is one or more of pentaerythritol tetraacrylate, ethoxylated pentaerythritol tetraacrylate, and dipentaerythritol hexaacrylate.
Specifically, the defoaming agent is an organic silicon defoaming agent or a polyether defoaming agent.
Specifically, the leveling agent is an Effka EFKA-3580 leveling agent.
Specifically, the thickening agent is BYK-420 or BYK-425.
Specifically, the dispersant is BYK-142 or BYK-154.
Specifically, the amino compound is one or more of urea, 2-amino-2-methyl-1-propanol and 2-amino-2-ethyl propylene glycol.
Specifically, the modified graphene is prepared according to the following steps:
dispersing 200mg GO in 10m L deionized water, dispersing uniformly by ultrasonic, adding 2ml1mg/m L AgNO3And (2) performing ultrasonic treatment on the aqueous solution for 1min, adding 5mg of nano titanium dioxide, performing ultrasonic treatment for 2min, adding 2m of L formaldehyde, uniformly stirring, finally adding 300mg of urea, slowly pressing the mixed solution along the wall of a beaker until the mixed solution is fluffy and gelatinous, transferring the mixed solution to a high-temperature reaction kettle, performing hydrothermal reaction for 8h at the temperature of 120 ℃, and after the reaction is finished, performing vacuum drying on the reaction product to obtain the modified graphene.
Specifically, the particle size of the nano titanium dioxide is 20-50 nm.
Specifically, the EB curing formaldehyde-removing coating is prepared according to the following steps:
(1) under low-speed stirring, adding water and formaldehyde removing agent in formula amount in sequence, then adjusting the rotating speed to 1500-2000rpm, and stirring for 30-40 min;
(2) adding acrylate and an active monomer into the mixed system obtained in the step (1), and stirring for 30-50 min;
(3) and (3) adding an auxiliary agent into the mixed system obtained in the step (2), wherein the auxiliary agent comprises a dispersing agent, a flatting agent, a thickening agent and a defoaming agent, and stirring for 15-20min to obtain the EB curing formaldehyde-removing coating.
The invention has the beneficial effects that:
(1) the EB curing formaldehyde-removing coating prepared by the invention has good formaldehyde adsorption and formaldehyde purification effects, and experimental determination results show that the formaldehyde purification amount of the EB curing formaldehyde-removing coating in a closed space reaches the E1-level environmental protection standard specified in the national indoor air quality Standard GB18883-2002 within 18 h;
(2) the EB curing formaldehyde-removing coating prepared by the invention has the surface hardness of 2H, the adhesive force of 0 grade and excellent aging resistance.
Detailed Description
The present invention will now be described in further detail with reference to examples.
The defoaming agent used in the following examples and comparative examples of the present invention is an organosilicon defoaming agent or a polyether defoaming agent, the leveling agent is an EFKA-3580 leveling agent, the thickener is BYK-420 or BYK-425, and the dispersant is BYK-142 or BYK-154.
Example 1
The modified graphene is prepared according to the following steps:
dispersing 200mg GO in 10m L deionized water, dispersing uniformly by ultrasonic, adding 2ml1mg/m L AgNO3Performing ultrasonic treatment on an aqueous solution for 1min, adding 5mg of nano titanium dioxide, performing ultrasonic treatment for 2min, adding 2m of L formaldehyde, uniformly stirring, finally adding 300mg of urea, slowly pressing the mixed solution along the wall of a beaker until the mixed solution is fluffy and gelatinous, transferring the mixed solution to a high-temperature reaction kettle, performing hydrothermal reaction for 8 hours at the temperature of 120 ℃, and after the reaction is finished, performing vacuum drying on a reaction product to obtain modified graphene;
the EB curing formaldehyde-removing coating is prepared by the following steps in parts by weight:
(1) under low-speed stirring, sequentially adding 10 parts of water and 10 parts of formaldehyde removing agent, wherein the formaldehyde removing agent comprises 5 parts of urea, 3 parts of modified graphene and 10 parts of diatomite, adjusting the rotating speed to 1500rpm, and stirring for 30 min;
(2) adding 30 parts of epoxy acrylate and 20 parts of pentaerythritol tetraacrylate into the mixed system obtained in the step (1), and stirring for 30 min;
(3) and (3) adding 1 part of auxiliary agent into the mixed system obtained in the step (2), wherein the auxiliary agent comprises 1 part of dispersing agent, 0.5 part of flatting agent, 1 part of thickening agent and 1.5 parts of defoaming agent, and stirring for 15min to obtain the EB curing formaldehyde-removing coating.
Example 2
The modified graphene is prepared according to the following steps:
dispersing 200mg GO in 10m L deionized water, dispersing uniformly by ultrasonic, adding 2ml1mg/m L AgNO3Performing ultrasonic treatment on an aqueous solution for 1min, adding 5mg of nano titanium dioxide, performing ultrasonic treatment for 2min, adding 2m of L formaldehyde, uniformly stirring, finally adding 300mg of urea, slowly pressing the mixed solution along the wall of a beaker until the mixed solution is fluffy and gelatinous, transferring the mixed solution to a high-temperature reaction kettle, performing hydrothermal reaction for 8 hours at the temperature of 120 ℃, and after the reaction is finished, performing vacuum drying on a reaction product to obtain modified graphene;
the EB curing formaldehyde-removing coating is prepared by the following steps in parts by weight:
(1) under low-speed stirring, sequentially adding 15 parts of water and 15 parts of formaldehyde removing agent, wherein the formaldehyde removing agent comprises 8 parts of 2-amino-2-methyl-1-propanol, 5 parts of modified graphene and 15 parts of diatomite, adjusting the rotating speed to 2000rpm, and stirring for 40 min;
(2) adding 60 parts of urethane acrylate and 30 parts of ethoxylated pentaerythritol tetraacrylate into the mixed system obtained in the step (1), and stirring for 50 min;
(3) and (3) adding 5 parts of auxiliary agent into the mixed system obtained in the step (2), wherein the auxiliary agent comprises 1.5 parts of dispersing agent, 1 part of flatting agent, 2 parts of thickening agent and 2 parts of defoaming agent, and stirring for 20min to obtain the EB curing formaldehyde-removing coating.
Example 3
The modified graphene is prepared according to the following steps:
dispersing 200mg GO in 10m L deionized water, dispersing uniformly by ultrasonic, adding 2ml1mg/m L AgNO3Performing ultrasonic treatment on the aqueous solution for 1min, adding 5mg of nano titanium dioxide, performing ultrasonic treatment for 2min, adding 2m of L formaldehyde, stirring uniformly, finally adding 300mg of urea, slowly pressing the mixed solution along the wall of a beaker until the mixed solution is fluffy and gelatinous, transferring the mixed solution to a high-temperature reaction kettle, performing hydrothermal reaction for 8h at 120 ℃, and after the reaction is finished, performing vacuum drying on the reaction product, namely obtaining the productObtaining modified graphene;
the EB curing formaldehyde-removing coating is prepared by the following steps in parts by weight:
(1) under low-speed stirring, sequentially adding 12 parts of water and 13 parts of formaldehyde removing agent, wherein the formaldehyde removing agent comprises 7 parts of 2-amino-2-ethyl propylene glycol, 4 parts of modified graphene and 12 parts of diatomite, adjusting the rotating speed to 1500rpm, and stirring for 35 min;
(2) adding 45 parts of polyester acrylate and 25 parts of pentaerythritol tetraacrylate into the mixed system obtained in the step (1), and stirring for 40 min;
(3) and (3) adding 2 parts of auxiliary agent into the mixed system obtained in the step (2), wherein the auxiliary agent comprises 1 part of dispersing agent, 0.8 part of flatting agent, 1.5 parts of thickening agent and 1.8 parts of defoaming agent, and stirring for 15min to obtain the EB curing formaldehyde-removing coating.
Example 4
The modified graphene is prepared according to the following steps:
dispersing 200mg GO in 10m L deionized water, dispersing uniformly by ultrasonic, adding 2ml1mg/m L AgNO3Performing ultrasonic treatment on an aqueous solution for 1min, adding 5mg of nano titanium dioxide, performing ultrasonic treatment for 2min, adding 2m of L formaldehyde, uniformly stirring, finally adding 300mg of urea, slowly pressing the mixed solution along the wall of a beaker until the mixed solution is fluffy and gelatinous, transferring the mixed solution to a high-temperature reaction kettle, performing hydrothermal reaction for 8 hours at the temperature of 120 ℃, and after the reaction is finished, performing vacuum drying on a reaction product to obtain modified graphene;
the EB curing formaldehyde-removing coating is prepared by the following steps in parts by weight:
(1) under low-speed stirring, sequentially adding 13 parts of water and 14 parts of formaldehyde removing agent, wherein the formaldehyde removing agent comprises 5 parts of urea, 3 parts of modified graphene and 14 parts of diatomite, adjusting the rotating speed to 1500rpm, and stirring for 30 min;
(2) adding 50 parts of silicon modified acrylate and 22 parts of dipentaerythritol hexaacrylate into the mixed system obtained in the step (1), and stirring for 35 min;
(3) and (3) adding 3 parts of auxiliary agent into the mixed system obtained in the step (2), wherein the auxiliary agent comprises 1 part of dispersing agent, 0.5 part of flatting agent, 1 part of thickening agent and 1.5 parts of defoaming agent, and stirring for 20min to obtain the EB curing formaldehyde-removing coating.
Comparative example 1
The modified graphene is prepared according to the following steps:
dispersing 200mg GO in 10m L deionized water, dispersing uniformly by ultrasonic, adding 2ml1mg/m L AgNO3Performing ultrasonic treatment on an aqueous solution for 1min, adding 5mg of nano titanium dioxide, performing ultrasonic treatment for 2min, adding 2m of L formaldehyde, uniformly stirring, finally adding 300mg of urea, slowly pressing the mixed solution along the wall of a beaker until the mixed solution is fluffy and gelatinous, transferring the mixed solution to a high-temperature reaction kettle, performing hydrothermal reaction for 8 hours at the temperature of 120 ℃, and after the reaction is finished, performing vacuum drying on a reaction product to obtain modified graphene;
the EB curing formaldehyde-removing coating is prepared by the following steps in parts by weight:
(1) under low-speed stirring, sequentially adding 10 parts of water and 10 parts of formaldehyde removing agent, wherein the formaldehyde removing agent comprises 5 parts of urea, 3 parts of modified graphene and 10 parts of diatomite, adjusting the rotating speed to 1500rpm, and stirring for 30 min;
(2) adding 30 parts of epoxy acrylate and 20 parts of pentaerythritol triacrylate into the mixed system obtained in the step (1), and stirring for 30-50 min;
(3) and (3) adding 1 part of auxiliary agent into the mixed system obtained in the step (2), wherein the auxiliary agent comprises 1 part of dispersing agent, 0.5 part of flatting agent, 1 part of thickening agent and 1.5 parts of defoaming agent, and stirring for 15min to obtain the EB curing formaldehyde-removing coating.
Comparative example 2
The modified graphene is prepared according to the following steps:
dispersing 200mg of GO in 10m L deionized water, ultrasonically dispersing uniformly, adding 5mg of nano titanium dioxide, ultrasonically treating for 2min, adding 2m L of formaldehyde, stirring uniformly, finally adding 300mg of urea, slowly pressing the mixed solution along the wall of a beaker until the mixed solution is in a fluffy gel state, transferring the mixed solution to a high-temperature reaction kettle, carrying out hydrothermal reaction for 8 hours at the temperature of 120 ℃, and after the reaction is finished, carrying out vacuum drying on the reaction product to obtain the modified graphene.
The EB curing formaldehyde-removing coating is prepared by the following steps in parts by weight:
(1) under low-speed stirring, sequentially adding 10 parts of water and 10 parts of formaldehyde removing agent, wherein the formaldehyde removing agent comprises 5 parts of urea, 3 parts of modified graphene and 10 parts of diatomite, adjusting the rotating speed to 1500rpm, and stirring for 30-40 min;
(2) adding 30 parts of epoxy acrylate and 20 parts of pentaerythritol tetraacrylate into the mixed system obtained in the step (1), and stirring for 30 min;
(3) and (3) adding 1 part of auxiliary agent into the mixed system obtained in the step (2), wherein the auxiliary agent comprises 1 part of dispersing agent, 0.5 part of flatting agent, 1 part of thickening agent and 1.5 parts of defoaming agent, and stirring for 15min to obtain the EB curing formaldehyde-removing coating.
Comparative example 3
The modified graphene is prepared according to the following steps:
dispersing 200mg of GO in 10m L deionized water, ultrasonically dispersing uniformly, adding 2m L of formaldehyde, stirring uniformly, finally adding 300mg of urea, slowly pressing the mixed solution along the wall of a beaker until the mixed solution is fluffy and gelatinous, transferring the mixed solution to a high-temperature reaction kettle, carrying out hydrothermal reaction for 8 hours at 120 ℃, and after the reaction is finished, carrying out vacuum drying on the reaction product to obtain the modified graphene;
the EB curing formaldehyde-removing coating is prepared by the following steps in parts by weight:
(1) under low-speed stirring, sequentially adding 10 parts of water and 10 parts of formaldehyde removing agent, wherein the formaldehyde removing agent comprises 5 parts of urea, 3 parts of modified graphene and 10 parts of diatomite, adjusting the rotating speed to 1500rpm, and stirring for 30 min;
(2) adding 30 parts of epoxy acrylate and 20 parts of pentaerythritol tetraacrylate into the mixed system obtained in the step (1), and stirring for 30 min;
(3) and (3) adding 1 part of auxiliary agent into the mixed system obtained in the step (2), wherein the auxiliary agent comprises 1 part of dispersing agent, 0.5 part of flatting agent, 1 part of thickening agent and 1.5 parts of defoaming agent, and stirring for 15min to obtain the EB curing formaldehyde-removing coating.
Comparative example 4
The modified graphene is prepared according to the following steps:
dispersing 200mg GO in 10m L deionized water, dispersing uniformly by ultrasonic, adding 2ml1mg/m L AgNO3And (2) ultrasonically treating the aqueous solution for 1min, adding 2m L of formaldehyde, uniformly stirring, finally adding 300mg of urea, slowly pressing the mixed solution along the wall of a beaker by using a glass rod until the mixed solution is in a fluffy gel state, transferring the mixed solution to a high-temperature reaction kettle, carrying out hydrothermal reaction for 8h at the temperature of 120 ℃, and after the reaction is finished, carrying out vacuum drying on the reaction product to obtain the modified graphene.
The EB curing formaldehyde-removing coating is prepared by the following steps in parts by weight:
(1) under low-speed stirring, sequentially adding 10 parts of water and 10 parts of formaldehyde removing agent, wherein the formaldehyde removing agent comprises 5 parts of urea, 3 parts of modified graphene, 0.5 part of nano titanium dioxide and 10 parts of diatomite, adjusting the rotating speed to 1500rpm, and stirring for 30 min;
(2) adding 30 parts of epoxy acrylate and 20 parts of pentaerythritol tetraacrylate into the mixed system obtained in the step (1), and stirring for 30 min;
(3) and (3) adding 1 part of auxiliary agent into the mixed system obtained in the step (2), wherein the auxiliary agent comprises 1 part of dispersing agent, 0.5 part of flatting agent, 1 part of thickening agent and 1.5 parts of defoaming agent, and stirring for 15min to obtain the EB curing formaldehyde-removing coating.
Comparative example 5
The modified graphene is prepared according to the following steps:
dispersing 200mg of GO in 10m L deionized water, performing ultrasonic dispersion uniformly for 1min, adding 5mg of nano titanium dioxide, performing ultrasonic treatment for 2min, adding 2m L of formaldehyde, stirring uniformly, finally adding 300mg of urea, slowly pressing the mixed solution along the wall of a beaker by using a glass rod until the mixed solution is fluffy and gelatinous, transferring the mixed solution to a high-temperature reaction kettle, performing hydrothermal reaction for 8h at the temperature of 120 ℃, and after the reaction is finished, performing vacuum drying on the reaction product to obtain the modified graphene;
the EB curing formaldehyde-removing coating is prepared by the following steps in parts by weight:
(1) under low-speed stirring, sequentially adding 10 parts of water and 10 parts of formaldehyde removing agent, wherein the formaldehyde removing agent comprises 5 parts of urea, 3 parts of modified graphene and 10 parts of diatomite, adjusting the rotating speed to 1500rpm, and stirring for 30 min;
(2) adding 30 parts of epoxy acrylate and 35 parts of pentaerythritol tetraacrylate into the mixed system obtained in the step (1), and stirring for 30 min;
(3) and (3) adding 1 part of auxiliary agent into the mixed system obtained in the step (2), wherein the auxiliary agent comprises 1 part of dispersing agent, 0.5 part of flatting agent, 1 part of thickening agent and 1.5 parts of defoaming agent, and stirring for 15min to obtain the EB curing formaldehyde-removing coating.
The formaldehyde-removing coating systems of examples 1-4, i.e., comparative examples 1-5, were cured with EB having an EB curing energy of 150-200keV and an EB curing agent in an amount of 20-50 kGy. The hardness of the formaldehyde-removing coating films prepared in examples 1 to 4, i.e., comparative examples 1 to 5, was measured by the pencil hardness measurement method for GB/T6739-1996 coating films, the adhesion of the coating films was measured according to the method GB/T9286-1998, ISO 2409:1992, the water resistance was measured according to the method GB1733-93 paint film water resistance, the aging resistance was measured according to ISO11341:2004, the alkali resistance was measured according to GB/T9265-2009, the scrub resistance was measured according to GBT 9266-2009, and the results are shown in tables 1 and 2:
TABLE 1
TABLE 2
Note: the data in Table 2 are monitored by a building material industry environment monitoring center under the conditions of temperature of 20 +/-2 ℃ and relative humidity of 50 +/-10%.
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 EB curing formaldehyde-removing coating is characterized by comprising the following components in parts by weight:
the auxiliary agent comprises the following components in parts by weight:
the formaldehyde removing agent comprises the following components in parts by weight:
5-8 parts of amino compound
3-5 parts of modified graphene
10-15 parts of diatomite.
2. The EB cured formaldehyde-removing coating of claim 1 wherein: the acrylate is one or more of epoxy acrylate, polyurethane acrylate, polyester acrylate and silicon modified acrylate.
3. The EB cured formaldehyde-removing coating of claim 1 wherein: the active monomer is one or more of pentaerythritol tetraacrylate, ethoxylated pentaerythritol tetraacrylate and dipentaerythritol hexaacrylate.
4. The EB cured formaldehyde-removing coating of claim 1 wherein: the defoaming agent is an organic silicon defoaming agent or a polyether defoaming agent.
5. The EB cured formaldehyde-removing coating of claim 1 wherein: the leveling agent is an Effka EFKA-3580 leveling agent.
6. The EB cured formaldehyde-removing coating of claim 1 wherein: the thickening agent is BYK-420 or BYK-425.
7. The EB cured formaldehyde-removing coating of claim 1 wherein: the dispersant is BYK-142 or BYK-154.
8. The EB cured formaldehyde-removing coating of claim 1 wherein: the amino compound is one or more of urea, 2-amino-2-methyl-1-propanol and 2-amino-2-ethyl propylene glycol.
9. The EB-curing formaldehyde-removing paint according to claim 1, wherein the modified graphene is prepared according to the following steps:
dispersing 200mg GO in 10m L deionized water, dispersing uniformly by ultrasonic, adding 2ml1mg/m L AgNO3And (2) performing ultrasonic treatment on the aqueous solution for 1min, adding 5mg of nano titanium dioxide, performing ultrasonic treatment for 2min, adding 2m of L formaldehyde, uniformly stirring, finally adding 300mg of urea, slowly pressing the mixed solution along the wall of a beaker until the mixed solution is fluffy and gelatinous, transferring the mixed solution to a high-temperature reaction kettle, performing hydrothermal reaction for 8h at the temperature of 120 ℃, and after the reaction is finished, performing vacuum drying on the reaction product to obtain the modified graphene.
10. The EB cured formaldehyde-removing coating of claim 9 wherein: the particle size of the nano titanium dioxide is 20-50 nm.
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| CN112126331A (en) * | 2020-09-16 | 2020-12-25 | 江苏晨光涂料有限公司 | Negative oxygen ion paint |
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