CN114292572A - UV (ultraviolet) photocuring woodware coating and preparation method thereof - Google Patents
UV (ultraviolet) photocuring woodware coating and preparation method thereof Download PDFInfo
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- CN114292572A CN114292572A CN202111624402.5A CN202111624402A CN114292572A CN 114292572 A CN114292572 A CN 114292572A CN 202111624402 A CN202111624402 A CN 202111624402A CN 114292572 A CN114292572 A CN 114292572A
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- 238000000576 coating method Methods 0.000 title claims abstract description 52
- 239000011248 coating agent Substances 0.000 title claims abstract description 45
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 238000000016 photochemical curing Methods 0.000 title abstract description 4
- 239000000203 mixture Substances 0.000 claims abstract description 33
- 239000002023 wood Substances 0.000 claims abstract description 25
- 239000003999 initiator Substances 0.000 claims abstract description 14
- 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 abstract description 13
- 239000000178 monomer Substances 0.000 claims abstract description 13
- INQDDHNZXOAFFD-UHFFFAOYSA-N 2-[2-(2-prop-2-enoyloxyethoxy)ethoxy]ethyl prop-2-enoate Chemical compound C=CC(=O)OCCOCCOCCOC(=O)C=C INQDDHNZXOAFFD-UHFFFAOYSA-N 0.000 claims abstract description 10
- 150000001412 amines Chemical class 0.000 claims abstract description 10
- 239000011347 resin Substances 0.000 claims abstract description 9
- 229920005989 resin Polymers 0.000 claims abstract description 9
- -1 modified bisphenol A epoxy acrylate Chemical class 0.000 claims abstract description 7
- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical compound C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims description 12
- 239000002270 dispersing agent Substances 0.000 claims description 10
- 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 8
- 239000002518 antifoaming agent Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 239000013530 defoamer Substances 0.000 claims description 3
- 238000001723 curing Methods 0.000 abstract description 12
- 239000000853 adhesive Substances 0.000 abstract description 4
- 230000001070 adhesive effect Effects 0.000 abstract description 4
- 230000008030 elimination Effects 0.000 abstract description 2
- 238000003379 elimination reaction Methods 0.000 abstract description 2
- 239000003973 paint Substances 0.000 description 6
- 238000010998 test method Methods 0.000 description 5
- 230000005856 abnormality Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 102100026735 Coagulation factor VIII Human genes 0.000 description 3
- 101000911390 Homo sapiens Coagulation factor VIII Proteins 0.000 description 3
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 230000002730 additional effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000003636 chemical group Chemical group 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000013027 odor testing Methods 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
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- Paints Or Removers (AREA)
Abstract
The invention relates to the field of coatings, in particular to a UV (ultraviolet) photocuring woodware coating and a preparation method thereof. The wood ware coating comprises the following components in parts by weight: 20-50 parts of resin, 20-40 parts of monomer and 3-7 parts of initiator; wherein the resin is epoxy acrylate or modified bisphenol A epoxy acrylate; the monomer is a mixture of trimethylolpropane triacrylate and triethylene glycol diacrylate; the initiator is a mixture of active amine and one or more selected from TPO, PBZ and OMBB. The woodware coating provided by the invention can be cured under UV light, and the woodware coating can realize complete odor elimination; meanwhile, the woodenware coating has good viscosity, heat resistance, stability, leveling property, adhesive force and higher curing speed.
Description
Technical Field
The invention relates to the field of coatings, in particular to a UV (ultraviolet) photocuring woodware coating and a preparation method thereof.
Background
In recent years, ultraviolet curing coatings are rapidly developed and widely applied in the fields of wooden furniture and the like. In combination with market feedback, higher requirements are put on the additional effect of the ultraviolet curing coating, particularly on the odor; the existing ultraviolet curing coating has large smell, and when the coating is applied to the fields of children learning tables, wardrobe interior trimming panels and the like, certain damage can be caused to human bodies. Therefore, the development of a low-odor and even odorless ultraviolet curing coating is a technical problem which needs to be solved urgently by the technical personnel in the field.
In view of this, the invention is particularly proposed.
Disclosure of Invention
The invention aims to provide the wood coating, which has very low residual smell, good viscosity, heat resistance, stability, leveling property, adhesive force and higher curing speed; the invention also aims to provide a preparation method of the wood coating.
Specifically, the invention provides the following technical scheme:
the invention provides a (UV light-cured) woodware coating, which comprises the following components in parts by weight:
20-50 parts of resin, 20-40 parts of monomer and 3-7 parts of initiator;
wherein the resin is epoxy acrylate or modified bisphenol A epoxy acrylate; the monomer is a mixture of trimethylolpropane triacrylate (TMPTA) and triethylene glycol diacrylate (TPGDA); the initiator is a mixture of active amine and one or more selected from TPO, PBZ and OMBB.
The invention unexpectedly discovers that by adopting the mode, the obtained woodware coating has very low residual smell and even achieves the net smell, and the woodware coating also has good viscosity, heat resistance, stability, leveling property, adhesive force and higher curing speed.
Preferably, the mass ratio of the trimethylolpropane triacrylate (TMPTA) to the triethylene glycol diacrylate (TPGDA) is (25-30): (4-5).
In the invention, the selection of the monomer has a crucial influence on the residual odor of the cured paint film; the invention further discovers that when the mixture of TMPTA and TPGDA with a specific ratio is selected as a monomer, the odor of the obtained woodware coating is minimum (close to net odor) compared with other monomers (such as HEMA and the like).
Preferably, the amount of the reactive amine is 40 to 45% based on the total amount of the initiator.
In the invention, the initiator is a key component in the wood coating and has the functions of transmitting the energy of ultraviolet photons, rapidly initiating the cross-linking polymerization of monomers and oligomers and promoting the liquid-solid conversion process of the system; the invention further discovers that the effect is best when the active amine and one or a mixture of more of TPO, PBZ and OMBB are selected and the active amine is 40-45% of the total amount of the initiator compared with other initiators (such as 1173, CBP, 184, etc.).
Preferably, the wood ware coating further comprises the following components in parts by weight: 0.1-1 part of dispersant, 0.1-0.5 part of defoamer and 15-25 parts of talcum powder.
Preferably, the dispersing agent is selected from one or more of BYK-110, BYK-103 and EFKA-4010.
Preferably, the defoaming agent is BYK-055.
Preferably, the wood ware coating comprises the following components in parts by weight:
as a better technical scheme, the woodware coating comprises the following components in parts by weight:
the invention also provides a preparation method of the wood coating, which comprises the following steps:
(1) mixing resin, monomer and initiator to obtain a mixture I;
(2) mixing the mixture I, a dispersing agent and a defoaming agent to obtain a mixture II;
(3) mixing the mixture II with talcum powder.
Preferably, in the step (1), the mixing is dispersed at 1400-1600r/min for 14-16 min; and/or the presence of a gas in the gas,
in the step (2), the mixing is dispersed for 7-9min at 1100-1300 r/min; and/or the presence of a gas in the gas,
in the step (3), the mixing is dispersed at 1100-1300r/min for 19-21 min.
As a preferred technical scheme, the preparation method comprises the following steps:
(1) dispersing the resin, the monomer and the initiator at 1400-1600r/min for 14-16min to obtain a mixture I;
(2) dispersing the mixture I, the dispersing agent and the defoaming agent for 7-9min at the speed of 1100-1300r/min to obtain a mixture II;
(3) and dispersing the mixture II and the talcum powder for 19-21min at the speed of 1100-1300 r/min.
Based on the scheme, the invention has the following beneficial effects:
the woodware coating provided by the invention can be cured under UV light, and the woodware coating can realize complete odor elimination; meanwhile, the woodenware coating has good viscosity, heat resistance, stability, leveling property, adhesive force and higher curing speed.
Detailed Description
The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
The following examples refer to epoxy acrylates 621-100 from Changxing chemical industries, Inc.; the modified bisphenol A epoxy acrylate 6100D-85 is purchased from Hengmen City Heng photo-environmental protection New materials Co; TPGDA was purchased from Ruiyang chemical Co., Ltd; TMPTA was purchased from ruiyang chemical ltd; HEMA was purchased from Wanhua chemical group; TPO, PBZ, OMBB were purchased from Long-term chemical Co.
The examples do not show the specific techniques or conditions, according to the technical or conditions described in the literature in the field, or according to the product specifications. The reagents or instruments used are conventional products available from regular distributors, not indicated by the manufacturer.
Example 1
The embodiment provides a woodware coating, which comprises the following components in parts by weight:
the embodiment also provides a preparation method of the wood coating, which comprises the following steps:
(1) dispersing the epoxy acrylate 621-100, TMPTA, TPGDA, TPO and active amine at 1500r/min for 15min to obtain a mixture I;
(2) dispersing the mixture I, a dispersing agent and a defoaming agent for 8min at 1200r/min to obtain a mixture II;
(3) and dispersing the mixture II and the talcum powder for 20min at 1200r/min to obtain the compound.
Example 2
The embodiment provides a woodware coating, which comprises the following components in parts by weight:
the embodiment also provides a preparation method of the wood coating, which comprises the following steps:
(1) dispersing modified bisphenol A epoxy acrylate 6100D-85, TMPTA, TPGDA, PBZ and active amine for 15min at 1500r/min to obtain a mixture I;
(2) dispersing the mixture I, a dispersing agent and a defoaming agent for 8min at 1200r/min to obtain a mixture II;
(3) and dispersing the mixture II and the talcum powder for 20min at 1200r/min to obtain the compound.
Example 3
The embodiment provides a woodware coating, which comprises the following components in parts by weight:
the embodiment also provides a preparation method of the wood coating, which comprises the following steps:
(1) dispersing the epoxy acrylate 621-one 100, TMPTA, TPGDA, OMBB and active amine at 1500r/min for 15min to obtain a mixture I;
(2) dispersing the mixture I, a dispersing agent and a defoaming agent for 8min at 1200r/min to obtain a mixture II;
(3) and dispersing the mixture II and the talcum powder for 20min at 1200r/min to obtain the compound.
Comparative example 1
This comparative example provides a wood coating which differs from example 1 in that: in the formulation, both TMPTA and TPGDA were replaced with HEMA.
Test examples
The performance of the wood coatings of the examples and comparative examples was tested as follows:
(1) the test method comprises the following steps: coating the wood coatings on the base material by a roller coater (the construction process is that the solid wood rubber board → the wood coatings → the cured half-dried → the wood coatings → the cured full-dried); at 80 semi-dry to 200 full dry mJ/cm2(2) under the light intensity of a mercury lamp, curing to form a film according to the linear speed of the conveyor being 10m/min, and then carrying out performance detection on the obtained paint film; the coating weight is (20 +/-5) g/m2The range was coated twice.
The viscosity test method comprises the following steps: measured by an NDJ-1 rotational viscometer at the temperature of 25 ℃ of the coating;
the curing speed test method comprises the following steps: curing the paint film (20 g/m) under the condition of 1 mercury lamp2) Reach solid dryness, expressed using conveyor speed;
test methods for heat resistance and stability: placing each paint film in an environment of 80 ℃ for 72 hours, and observing;
the adhesion test method comprises the following steps: according to GB/T9286-1998 cross-hatch test of paint films of colored paint and varnish;
the odor test method comprises the following steps: assessment by a professional; wherein, the evaluation grade is set as 5 grades, 5 grades are worst, and 1 grade is best.
(2) The test results are shown in table 1;
TABLE 1
| Detecting items | Example 1 | Example 2 | Example 3 | Comparative example 1 |
| Viscosity 25 ℃/mPa.s | 4200 | 5000 | 4200 | 2000 |
| Curing speed (m/min) | 12 | 10 | 9 | 3 |
| Standing at 80 deg.C for 72h | No abnormality | No abnormality | No abnormality | No abnormality |
| Adhesion force | ≤2 | ≤2 | ≤2 | ≤2 |
| Smell(s) | 1-2 | 1 | 1 | 4 |
Although the invention has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (10)
1. The wood coating is characterized by comprising the following components in parts by weight:
20-50 parts of resin, 20-40 parts of monomer and 3-7 parts of initiator;
wherein the resin is epoxy acrylate or modified bisphenol A epoxy acrylate; the monomer is a mixture of trimethylolpropane triacrylate and triethylene glycol diacrylate; the initiator is a mixture of active amine and one or more selected from TPO, PBZ and OMBB.
2. The wood coating as claimed in claim 1, wherein the mass ratio of the trimethylolpropane triacrylate to the triethylene glycol diacrylate is (25-30): (4-5).
3. The wood coating according to claim 1 or 2, wherein the amount of the active amine is 40-45% based on the total amount of the initiator.
4. The wood coating according to any one of claims 1 to 3, further comprising, in parts by weight: 0.1-1 part of dispersant, 0.1-0.5 part of defoamer and 15-25 parts of talcum powder.
5. The wood coating according to claim 4, wherein the dispersant is selected from one or more of BYK-110, BYK-103 and EFKA-4010.
6. The wood coating of claim 4, wherein the defoamer is BYK-055.
7. The wood coating according to any one of claims 1 to 6, comprising the following components in parts by weight:
8. the wood coating according to claim 7, comprising the following components in parts by weight:
9. the method for preparing the wood coating of any one of claims 1 to 8, comprising the steps of:
(1) mixing resin, monomer and initiator to obtain a mixture I;
(2) mixing the mixture I, a dispersing agent and a defoaming agent to obtain a mixture II;
(3) mixing the mixture II with talcum powder.
10. The method as claimed in claim 9, wherein in step (1), the mixing is dispersed at 1400-1600r/min for 14-16 min; and/or the presence of a gas in the gas,
in the step (2), the mixing is dispersed for 7-9min at 1100-1300 r/min; and/or the presence of a gas in the gas,
in the step (3), the mixing is dispersed at 1100-1300r/min for 19-21 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111624402.5A CN114292572A (en) | 2021-12-28 | 2021-12-28 | UV (ultraviolet) photocuring woodware coating and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111624402.5A CN114292572A (en) | 2021-12-28 | 2021-12-28 | UV (ultraviolet) photocuring woodware coating and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN114292572A true CN114292572A (en) | 2022-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111624402.5A Pending CN114292572A (en) | 2021-12-28 | 2021-12-28 | UV (ultraviolet) photocuring woodware coating and preparation method thereof |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111500160A (en) * | 2020-04-30 | 2020-08-07 | 青岛展辰新材料有限公司 | Solvent-free spraying low-light-level curing UV transparent primer and preparation method and application thereof |
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- 2021-12-28 CN CN202111624402.5A patent/CN114292572A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111500160A (en) * | 2020-04-30 | 2020-08-07 | 青岛展辰新材料有限公司 | Solvent-free spraying low-light-level curing UV transparent primer and preparation method and application thereof |
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