CN114410194A - Fast-surface-drying easy-polishing low-yellowing three-in-one LED-UV coating and preparation method thereof - Google Patents
Fast-surface-drying easy-polishing low-yellowing three-in-one LED-UV coating and preparation method thereof Download PDFInfo
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- 238000004383 yellowing Methods 0.000 title claims abstract description 73
- 238000000576 coating method Methods 0.000 title claims abstract description 67
- 239000011248 coating agent Substances 0.000 title claims abstract description 66
- 238000005498 polishing Methods 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
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- 238000000227 grinding Methods 0.000 claims abstract description 13
- 239000006185 dispersion Substances 0.000 claims description 37
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- 150000001412 amines Chemical class 0.000 claims description 19
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 19
- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical class C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 claims description 19
- 229910021485 fumed silica Inorganic materials 0.000 claims description 18
- 239000000945 filler Substances 0.000 claims description 17
- 239000000049 pigment Substances 0.000 claims description 17
- 238000005336 cracking Methods 0.000 claims description 16
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 12
- 239000004814 polyurethane Substances 0.000 claims description 12
- 229920002635 polyurethane Polymers 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 12
- 238000010521 absorption reaction Methods 0.000 claims description 9
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical class OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 claims description 9
- ZDQNWDNMNKSMHI-UHFFFAOYSA-N 1-[2-(2-prop-2-enoyloxypropoxy)propoxy]propan-2-yl prop-2-enoate Chemical compound C=CC(=O)OC(C)COC(C)COCC(C)OC(=O)C=C ZDQNWDNMNKSMHI-UHFFFAOYSA-N 0.000 claims description 7
- GTELLNMUWNJXMQ-UHFFFAOYSA-N 2-ethyl-2-(hydroxymethyl)propane-1,3-diol;prop-2-enoic acid Chemical class OC(=O)C=C.OC(=O)C=C.OC(=O)C=C.CCC(CO)(CO)CO GTELLNMUWNJXMQ-UHFFFAOYSA-N 0.000 claims description 7
- DAKWPKUUDNSNPN-UHFFFAOYSA-N Trimethylolpropane triacrylate Chemical compound C=CC(=O)OCC(CC)(COC(=O)C=C)COC(=O)C=C DAKWPKUUDNSNPN-UHFFFAOYSA-N 0.000 claims description 7
- FSDNTQSJGHSJBG-UHFFFAOYSA-N piperidine-4-carbonitrile Chemical compound N#CC1CCNCC1 FSDNTQSJGHSJBG-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
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- 238000001723 curing Methods 0.000 description 12
- 150000001875 compounds Chemical class 0.000 description 10
- 239000002518 antifoaming agent Substances 0.000 description 7
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- 239000002270 dispersing agent Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
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- 239000000377 silicon dioxide Substances 0.000 description 6
- 235000012239 silicon dioxide Nutrition 0.000 description 6
- 238000004132 cross linking Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000003999 initiator Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
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- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
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- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
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- XOFYZVNMUHMLCC-ZPOLXVRWSA-N prednisone Chemical compound O=C1C=C[C@]2(C)[C@H]3C(=O)C[C@](C)([C@@](CC4)(O)C(=O)CO)[C@@H]4[C@@H]3CCC2=C1 XOFYZVNMUHMLCC-ZPOLXVRWSA-N 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
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- 239000000758 substrate Substances 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/46—Polymerisation initiated by wave energy or particle radiation
- C08F2/48—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
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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
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
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Abstract
The invention relates to a fast-surface-drying easy-polishing low-yellowing three-in-one LED-UV coating and a preparation method thereof, wherein the fast-surface-drying easy-polishing low-yellowing three-in-one LED-UV coating is mainly prepared from the following components in parts by weight:
Description
Technical Field
The invention relates to a fast-surface-drying easy-polishing low-yellowing three-in-one LED-UV coating and a preparation method thereof, and is applied to the field of LED-UV primer production.
Background
The light curing technology is known as a new technology facing the green industry of the 21 st century, but under long-term use, the traditional UV curing technology still has some problems: such as low heat utilization rate, large power consumption, ozone pollution and the like. In the era of rapid scientific and technological development, an innovative curing method is as follows: LED-UV curing stands out, allowing the problems associated with conventional curing to be solved. The LED-UV (ultraviolet light emitting diode) is a new UV light source for semiconductor luminescence, can directly convert electric energy into light and radiation energy, has the advantages of long service life, high efficiency, low voltage, low temperature, good safety, low operating cost, no mercury, no ozone generation and the like, and is widely applied to the fields of UV adhesives, UV printing ink, UV coatings, 3D printing and the like. However, the LED-UV still has some technical problems, such as single wavelength and incomplete matching with the existing initiator, resulting in excellent deep curing effect of LED-UV, but poor surface drying effect and severe yellowing of part of LED initiator. In addition, in the existing LED-UV technology, the coating prepared by adopting low functional group resin has poor surface drying effect and is easy to be bonded with sand during polishing; the surface drying speed of the paint prepared by the high-functionality resin is improved, but the cross-linking density of a paint film is too high, so that the paint film is difficult to polish.
Such as: the method proposed in Chinese patent 201710788780.4, LED-UV ultraviolet light curing woodware nano-coating and preparation method thereof, requires high functionality polyurethane acrylate as main resin to achieve the effect of fast surface drying of paint film, but the paint film shrinkage has large influence, and the paint film is easy to crack after being tested by cold and hot cycles; the preparation process is complex and takes long time; preparing UV ultraviolet curing monomer dispersion liquid of the nano wear-resistant particles, and adding nano barium sulfate powder to be dispersed for 70min to obtain a sample; and wherein there is no mention of yellowing resistance of the product coating film;
chinese patent 201410412288.3 "A solventless UV vacuum spray finishing paint and its preparation method", wherein LED-UV curing means is not mentioned; the vacuum spraying matte finish paint has a complex manufacturing process, and also needs to manufacture a semi-finished product, namely the matte slurry, and then is uniformly mixed and dispersed with the semi-finished product of the paint; and the preparation process of the LED-UV primer and the putty is not mentioned.
Therefore, it is necessary to provide a fast-surface-drying, easy-to-polish, low-yellowing three-in-one LED-UV coating with fast surface drying, easy polishing, yellowing resistance, high toughness and pure smell, and a preparation method thereof.
Disclosure of Invention
In order to overcome the defects of slow surface drying, difficulty in polishing, easiness in yellowing, low toughness and no odor of the existing LED-UV coating, the invention provides the quick-surface-drying, easiness in polishing and low-yellowing three-in-one LED-UV coating and the preparation method thereof.
The technical scheme of the invention is as follows:
a fast-surface-drying easy-polishing low-yellowing three-in-one LED-UV coating is mainly prepared from the following components in parts by weight:
wherein the maximum absorption wavelength of the cracking photoinitiator is 393-415 nm;
the functionality of the modified epoxy acrylate is 3, and the functionality of the amine-modified urethane acrylate is 2.
The fast surface-drying easy-polishing low-yellowing three-in-one LED-UV coating selects low-functionality resin matched with reactive diluent, and is matched with two photoinitiators and other preferable components in a system and the dosage proportion thereof, so that the fast surface-drying easy-polishing low-yellowing three-in-one LED-UV coating has the advantages of fast surface drying, easy polishing, yellowing resistance, high toughness and odor purification. Aiming at the characteristic of poor surface drying of the existing LED-UV, the technical idea of using high-functionality resin and monomer instead of low-functionality resin and conventional active diluent is avoided, so that the defects that a paint film is brittle, easy to crack and difficult to polish due to excessive crosslinking density of the paint film are prevented. The low-functionality resin comprises special modified epoxy acrylate and amine modified polyurethane acrylate, the modified epoxy acrylate endows a paint film with high toughness and low yellowing performance, the amine modified polyurethane acrylate further assists in improving the surface drying speed of the paint film, and the amine modified polyurethane acrylate are common resins in a UV paint system and are simpler and easier to obtain; the conventional active diluent provides a certain crosslinking density for the paint film, and the drying effect of the surface of the paint film is improved to a certain extent; the optimal matching and curing efficiency of the cracking type photoinitiator and the compound type photoinitiator is high, the odor is low, and the energy consumption is reduced to a certain extent. The cracking type photoinitiator is used as a deep layer initiator to carry out deep layer curing, the maximum absorption wavelength of the compound type photoinitiator can reach about 415nm, the curing rate of a paint film is improved, the compound type photoinitiator is matched with active amine (tertiary amine with acryloxy has good compatibility and low smell, participates in crosslinking reaction and cannot migrate), the dosage is controlled, the surface drying speed is improved, and the yellowing influence on the paint film is avoided. The fast surface drying, easy polishing and low yellowing three-in-one LED-UV coating can be cured by an LED lamp during construction, has strong form inclusion property on a construction object, and can be cured in 15s of coating. The fast surface drying, easy polishing and low yellowing three-in-one LED-UV coating is mainly coated on materials such as wood boards and building materials, and after a substrate is treated by certain procedures, construction can be carried out by adopting modes such as vacuum spraying, reciprocating spraying or one-time roller coating.
The reactive diluent is one or any combination of more than two of dipropylene glycol diacrylate, ethoxylated trimethylolpropane triacrylate, tripropylene glycol diacrylate and trimethylolpropane triacrylate.
The preferable reactive diluent is reasonably matched aiming at poor surface dryness of the LED, so that the drying effect of the surface of a paint film can be further improved.
The fast-surface-drying easy-polishing low-yellowing three-in-one LED-UV coating also comprises 0.1-6 parts of matte powder.
The addition of the matt powder can enrich the paint film effect.
The fast surface drying, easy grinding and low yellowing three-in-one LED-UV coating also comprises 0.1-30 parts of talcum powder.
The addition of talcum powder can improve the performance of a paint film.
The fast surface-drying, easy-to-polish and low-yellowing three-in-one LED-UV coating also comprises 0.1-15 parts of pigment and filler
The addition of the pigment and the filler can enrich the color of the paint film.
The preparation method of the fast surface drying, easy grinding and low yellowing three-in-one LED-UV coating mainly comprises the following steps in sequence:
(1) starting a dispersion machine, adjusting the rotation speed to be 800-1000r/min, adding modified epoxy acrylate, amine modified polyurethane acrylate and an active diluent accounting for 21.98-81.97% of the total weight of the active diluent into the dispersion machine, and dispersing for 3-5 min;
(2) keeping the rotating speed at 800-;
(3) the rotation speed is adjusted to 1200-1500r/min, fumed silica is added into a dispersion machine, and the mixture is dispersed until the fineness is less than or equal to 25 mu m and no oil shrinkage exists;
(4) and adjusting the rotation speed to 1000-.
The preparation method of the fast-surface-drying easy-polishing low-yellowing three-in-one LED-UV coating is simple and convenient in steps and simple to operate.
And (4) adding the matte powder when the fumed silica is added in the step (3).
And (3) adding talcum powder when adding the fumed silica.
And (3) adding pigment and filler when adding the fumed silica.
Compared with the prior art, the method has the following advantages:
1) the fast surface-drying, easy-polishing and low-yellowing three-in-one LED-UV coating selects low-functionality resin matched with an active diluent, and is matched with two photoinitiators and other preferable components in a system and the dosage proportion thereof, so that the fast surface-drying, easy-polishing, yellowing-resistant, high-toughness and odor-free LED-UV coating has the advantages of fast surface-drying, easy-polishing, high-yellowing resistance and no odor;
2) the preparation method of the fast-surface-drying easy-polishing low-yellowing three-in-one LED-UV coating is simple and convenient in steps and simple to operate.
Detailed Description
The technical solution of the present invention will be described in detail with reference to the embodiments of the specification.
Example 1
The invention relates to a fast-surface-drying easy-polishing low-yellowing three-in-one LED-UV coating which is mainly prepared from the following components in parts by weight:
wherein the maximum absorption wavelength of the cracking photoinitiator is 400 nm;
the functionality of the modified epoxy acrylate is 3, and the functionality of the amine-modified urethane acrylate is 2.
The reactive diluent is dipropylene glycol diacrylate.
The preparation method of the fast surface drying, easy grinding and low yellowing three-in-one LED-UV coating mainly comprises the following steps in sequence:
(1) starting a dispersion machine, regulating the rotation speed to 900r/min, adding modified epoxy acrylate, amine modified polyurethane acrylate and a reactive diluent accounting for 607% of the total weight of the reactive diluent into the dispersion machine, and dispersing for 4 min;
(2) maintaining the rotating speed at 900r/min, adding a dispersing agent, a defoaming agent, a cracking type photoinitiator, a compound type photoinitiator and an anti-settling auxiliary agent into a dispersion machine, and dispersing for 8 min;
(3) regulating the rotation speed to 1300r/min, adding gas-phase silicon dioxide, talcum powder and pigment filler into a dispersion machine, and dispersing until the fineness is less than or equal to 25 mu m and no oil shrinkage exists;
(4) and (3) regulating the rotation speed to 1100r/min, adding the rest of reactive diluent and reactive amine into a dispersion machine, and dispersing for 12min to obtain the fast-surface-drying easy-polishing low-yellowing three-in-one LED-UV coating.
Example 2
The invention relates to a fast-surface-drying easy-polishing low-yellowing three-in-one LED-UV coating which is mainly prepared from the following components in parts by weight:
wherein, the maximum absorption wavelength of the cracking photoinitiator is 393 nm;
the functionality of the modified epoxy acrylate is 3, and the functionality of the amine-modified urethane acrylate is 2.
The active diluent is ethoxylated trimethylolpropane triacrylate.
The preparation method of the fast surface drying, easy grinding and low yellowing three-in-one LED-UV coating mainly comprises the following steps in sequence:
(1) starting a dispersion machine, regulating the rotation speed to 800r/min, adding modified epoxy acrylate, amine modified polyurethane acrylate and an active diluent accounting for 81.97% of the total weight of the active diluent into the dispersion machine, and dispersing for 3 min;
(2) maintaining the rotating speed at 800r/min, adding a dispersing agent, a defoaming agent, a cracking type photoinitiator, a compound type photoinitiator and an anti-settling auxiliary agent into a dispersion machine, and dispersing for 10 min;
(3) regulating the rotation speed to 1200r/min, adding gas-phase silicon dioxide, talcum powder and pigment filler into a dispersion machine, and dispersing until the fineness is less than or equal to 25 mu m and no oil shrinkage exists;
(4) and (3) regulating the rotation speed to 1200r/min, adding the rest of reactive diluent and reactive amine into a dispersion machine, and dispersing for 10min to obtain the fast-surface-drying easy-polishing low-yellowing three-in-one LED-UV coating.
Example 3
The invention relates to a fast-surface-drying easy-polishing low-yellowing three-in-one LED-UV coating which is mainly prepared from the following components in parts by weight:
wherein the maximum absorption wavelength of the cracking photoinitiator is 415 nm;
the functionality of the modified epoxy acrylate is 3, and the functionality of the amine-modified urethane acrylate is 2.
The reactive diluent is any combination of tripropylene glycol diacrylate and trimethylolpropane triacrylate.
The preparation method of the fast surface drying, easy grinding and low yellowing three-in-one LED-UV coating mainly comprises the following steps in sequence:
(1) starting a dispersion machine, regulating the rotation speed to 1000r/min, adding modified epoxy acrylate, amine modified polyurethane acrylate and an active diluent accounting for 21.98 percent of the total weight of the active diluent into the dispersion machine, and dispersing for 5 min;
(2) keeping the rotating speed at 1000r/min, adding a dispersing agent, a defoaming agent, a cracking type photoinitiator, a compound type photoinitiator and an anti-settling auxiliary agent into a dispersion machine, and dispersing for 5 min;
(3) regulating the rotation speed to 1500r/min, adding gas-phase silicon dioxide, talcum powder and pigment filler into a dispersion machine, and dispersing until the fineness is less than or equal to 25 mu m and no oil shrinkage exists;
(4) and adjusting the rotation speed to 100r/min, adding the rest of the reactive diluent and the reactive amine into a dispersion machine, and dispersing for 15min to obtain the fast-surface-drying easy-polishing low-yellowing three-in-one LED-UV coating.
Example 4
The invention relates to a fast-surface-drying easy-polishing low-yellowing three-in-one LED-UV coating which is mainly prepared from the following components in parts by weight:
wherein the maximum absorption wavelength of the cracking photoinitiator is 395 nm;
the functionality of the modified epoxy acrylate is 3, and the functionality of the amine-modified urethane acrylate is 2.
The reactive diluent is any combination of dipropylene glycol diacrylate, ethoxylated trimethylolpropane triacrylate, and tripropylene glycol diacrylate.
The fast-surface-drying easy-polishing low-yellowing three-in-one LED-UV coating also comprises 4 parts of matte powder.
The fast-surface-drying easy-polishing low-yellowing three-in-one LED-UV coating also comprises 18 parts of talcum powder.
The fast-surface-drying easy-polishing low-yellowing three-in-one LED-UV coating also comprises 10 parts of pigment and filler
The preparation method of the fast surface drying, easy grinding and low yellowing three-in-one LED-UV coating mainly comprises the following steps in sequence:
(1) starting a dispersion machine, regulating the rotation speed to 900r/min, adding modified epoxy acrylate, amine modified polyurethane acrylate and a reactive diluent accounting for 60 percent of the total weight of the reactive diluent into the dispersion machine, and dispersing for 4 min;
(2) maintaining the rotating speed at 900r/min, adding a dispersing agent, a defoaming agent, a cracking type photoinitiator, a compound type photoinitiator and an anti-settling auxiliary agent into a dispersion machine, and dispersing for 8 min;
(3) regulating the rotation speed to 1300r/min, adding gas-phase silicon dioxide, talcum powder and pigment filler into a dispersion machine, and dispersing until the fineness is less than or equal to 25 mu m and no oil shrinkage exists;
(4) and (3) regulating the rotation speed to 1100r/min, adding the rest of reactive diluent and reactive amine into a dispersion machine, and dispersing for 12min to obtain the fast-surface-drying easy-polishing low-yellowing three-in-one LED-UV coating.
And (4) adding the matte powder when the fumed silica is added in the step (3).
And (3) adding talcum powder when adding the fumed silica.
And (3) adding pigment and filler when adding the fumed silica.
Example 5
The invention relates to a fast-surface-drying easy-polishing low-yellowing three-in-one LED-UV coating which is mainly prepared from the following components in parts by weight:
wherein, the maximum absorption wavelength of the cracking photoinitiator is 393 nm;
the functionality of the modified epoxy acrylate is 3, and the functionality of the amine-modified urethane acrylate is 2.
The reactive diluent is any combination of ethoxylated trimethylolpropane triacrylate, tripropylene glycol diacrylate and trimethylolpropane triacrylate.
The fast-surface-drying easy-polishing low-yellowing three-in-one LED-UV coating also comprises 0.1 part of matte powder.
The fast-surface-drying easy-polishing low-yellowing three-in-one LED-UV coating also comprises 30 parts of talcum powder.
The fast surface drying, easy polishing and low yellowing three-in-one LED-UV coating also comprises 0.1 part of pigment and filler
The preparation method of the fast surface drying, easy grinding and low yellowing three-in-one LED-UV coating mainly comprises the following steps in sequence:
(1) starting a dispersion machine, regulating the rotation speed to 800r/min, adding modified epoxy acrylate, amine modified polyurethane acrylate and an active diluent accounting for 81.97% of the total weight of the active diluent into the dispersion machine, and dispersing for 3 min;
(2) maintaining the rotating speed at 800r/min, adding a dispersing agent, a defoaming agent, a cracking type photoinitiator, a compound type photoinitiator and an anti-settling auxiliary agent into a dispersion machine, and dispersing for 10 min;
(3) regulating the rotation speed to 1200r/min, adding gas-phase silicon dioxide, talcum powder and pigment filler into a dispersion machine, and dispersing until the fineness is less than or equal to 25 mu m and no oil shrinkage exists;
(4) and (3) regulating the rotation speed to 1200r/min, adding the rest of reactive diluent and reactive amine into a dispersion machine, and dispersing for 10min to obtain the fast-surface-drying easy-polishing low-yellowing three-in-one LED-UV coating.
And (4) adding the matte powder when the fumed silica is added in the step (3).
And (3) adding talcum powder when adding the fumed silica.
And (3) adding pigment and filler when adding the fumed silica.
Example 6
The invention relates to a fast-surface-drying easy-polishing low-yellowing three-in-one LED-UV coating which is mainly prepared from the following components in parts by weight:
wherein the maximum absorption wavelength of the cracking photoinitiator is 415 nm;
the functionality of the modified epoxy acrylate is 3, and the functionality of the amine-modified urethane acrylate is 2.
The reactive diluent is any combination of dipropylene glycol diacrylate, ethoxylated trimethylolpropane triacrylate, tripropylene glycol diacrylate and trimethylolpropane triacrylate.
The fast-surface-drying easy-polishing low-yellowing three-in-one LED-UV coating also comprises 6 parts of matte powder.
The fast surface drying, easy grinding and low yellowing three-in-one LED-UV coating also comprises 0.1 part of talcum powder.
The fast-surface-drying easy-polishing low-yellowing three-in-one LED-UV coating also comprises 15 parts of pigment and filler
The preparation method of the fast surface drying, easy grinding and low yellowing three-in-one LED-UV coating mainly comprises the following steps in sequence:
(1) starting a dispersion machine, regulating the rotation speed to 1000r/min, adding modified epoxy acrylate, amine modified polyurethane acrylate and an active diluent accounting for 21.98 percent of the total weight of the active diluent into the dispersion machine, and dispersing for 5 min;
(2) keeping the rotating speed at 1000r/min, adding a dispersing agent, a defoaming agent, a cracking type photoinitiator, a compound type photoinitiator and an anti-settling auxiliary agent into a dispersion machine, and dispersing for 5 min;
(3) regulating the rotation speed to 1500r/min, adding gas-phase silicon dioxide, talcum powder and pigment filler into a dispersion machine, and dispersing until the fineness is less than or equal to 25 mu m and no oil shrinkage exists;
(4) and adjusting the rotation speed to 100r/min, adding the rest of the reactive diluent and the reactive amine into a dispersion machine, and dispersing for 15min to obtain the fast-surface-drying easy-polishing low-yellowing three-in-one LED-UV coating.
And (4) adding the matte powder when the fumed silica is added in the step (3).
And (3) adding talcum powder when adding the fumed silica.
And (3) adding pigment and filler when adding the fumed silica.
Raw material information related to each example:
modified epoxy acrylate: constant light 6350-2;
amine-modified urethane acrylate: IGM argyrone 4775;
active diluent A: dipropylene glycol diacrylate, Sanmu DPGDA;
active diluent: ethoxylated trimethylolpropane triacrylate, Jiangsu Ridgefield chemical-3 EOTMPTA;
reactive diluent C: tripropylene glycol diacrylate, tribasic TPGDA;
reactive diluent D: trimethylolpropane triacrylate, trilobate TMPTA;
dispersing agent: germany Efka4010
Defoaming agent: a digao 920;
cleavage type photoinitiator: yuchang chemical KL TPO;
compound photoinitiator: for a long time 3124;
anti-settling auxiliary agent: BYK405, BYK, germany;
fumed silica: germany R972;
matte powder: grace 2105;
active amine: river science field 1113;
talc powder: guangxi Longsheng Huamei golden monkey brand, 1250-mesh fine talcum powder;
titanium dioxide: dupont 706.
Experimental data:
the detection method comprises the following steps: the toughness of the paint film is referred to GB/T1731-93; the yellowing resistance (color difference delta E) is referred to GB T23983-; the smell of the paint film is an enterprise mark; the adhesion refers to GB/T9286-1998; the water resistance test of the paint film is referred to GB/T23999-2009; the cold-hot cycle measurement reference HG/T0004-; in the aspect of surface drying speed, no standard value is referenced, and a 395nm LED lamp is used for curing.
TABLE 1 film property test results
As can be seen from Table 1, the fast-surface-drying, easy-polishing and low-yellowing three-in-one LED-UV coating of each example has the advantages of fast surface drying, easy polishing, yellowing resistance, high toughness and neat odor, and a paint film can be cured in one time (only ten seconds).
The fast surface drying, easy grinding and low yellowing three-in-one LED-UV coating and the preparation method thereof are not limited to the above embodiments, and any modification or replacement according to the principle of the invention should be within the protection scope of the invention.
Claims (9)
1. A fast surface drying, easy polishing and low yellowing three-in-one LED-UV coating is characterized in that: the adhesive is mainly prepared from the following components in parts by weight:
wherein the maximum absorption wavelength of the cracking photoinitiator is 393-415 nm;
the functionality of the modified epoxy acrylate is 3, and the functionality of the amine-modified urethane acrylate is 2.
2. The fast surface drying, easy sanding and low yellowing three-in-one LED-UV coating as claimed in claim 1, which is characterized in that: the reactive diluent is one or any combination of more than two of dipropylene glycol diacrylate, ethoxylated trimethylolpropane triacrylate, tripropylene glycol diacrylate and trimethylolpropane triacrylate.
3. The fast surface drying, easy sanding and low yellowing three-in-one LED-UV coating as claimed in claim 1, which is characterized in that: the fast-surface-drying easy-polishing low-yellowing three-in-one LED-UV coating also comprises 0.1-6 parts of matte powder.
4. The fast surface drying, easy sanding and low yellowing three-in-one LED-UV coating as claimed in claim 1, which is characterized in that: the fast surface drying, easy grinding and low yellowing three-in-one LED-UV coating also comprises 0.1-30 parts of talcum powder.
5. The fast surface drying, easy sanding and low yellowing three-in-one LED-UV coating as claimed in claim 1, which is characterized in that: the fast surface-drying, easy-to-polish and low-yellowing three-in-one LED-UV coating also comprises 0.1-15 parts of pigment and filler
6. The method for preparing the fast-surface-drying, easy-polishing and low-yellowing three-in-one LED-UV coating as claimed in any one of claims 1 to 5, is characterized in that: mainly comprises the following steps which are carried out in sequence:
(1) starting a dispersion machine, adjusting the rotation speed to be 800-1000r/min, adding modified epoxy acrylate, amine modified polyurethane acrylate and an active diluent accounting for 21.98-81.97% of the total weight of the active diluent into the dispersion machine, and dispersing for 3-5 min;
(2) keeping the rotating speed at 800-;
(3) the rotation speed is adjusted to 1200-1500r/min, fumed silica is added into a dispersion machine, and the mixture is dispersed until the fineness is less than or equal to 25 mu m and no oil shrinkage exists;
(4) and adjusting the rotation speed to 1000-.
7. The preparation method of the fast-surface-drying, easy-polishing and low-yellowing three-in-one LED-UV coating as claimed in claim 6, which is characterized in that: and (4) adding the matte powder when the fumed silica is added in the step (3).
8. The preparation method of the fast-surface-drying, easy-polishing and low-yellowing three-in-one LED-UV coating as claimed in claim 6, which is characterized in that: and (3) adding talcum powder when adding the fumed silica.
9. The preparation method of the fast-surface-drying, easy-polishing and low-yellowing three-in-one LED-UV coating as claimed in claim 6, which is characterized in that: and (3) adding pigment and filler when adding the fumed silica.
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| CN107722797A (en) * | 2017-10-27 | 2018-02-23 | 天津久日新材料股份有限公司 | A kind of white lacquer as woodenware finish of UV LED light sources solidification and preparation method thereof |
| CN113881325A (en) * | 2021-10-28 | 2022-01-04 | 河南立邦长润发科技材料有限公司 | LED (light-emitting diode) curing roller coating white primer as well as preparation method and use method thereof |
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| CN107722797A (en) * | 2017-10-27 | 2018-02-23 | 天津久日新材料股份有限公司 | A kind of white lacquer as woodenware finish of UV LED light sources solidification and preparation method thereof |
| CN113881325A (en) * | 2021-10-28 | 2022-01-04 | 河南立邦长润发科技材料有限公司 | LED (light-emitting diode) curing roller coating white primer as well as preparation method and use method thereof |
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