CN116082944B - Dual UV (ultraviolet) curing coating with ultrahigh boiling resistance, and preparation method and application thereof - Google Patents
Dual UV (ultraviolet) curing coating with ultrahigh boiling resistance, and preparation method and application thereof Download PDFInfo
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- 238000000576 coating method Methods 0.000 title claims abstract description 45
- 238000009835 boiling Methods 0.000 title claims abstract description 44
- 239000011248 coating agent Substances 0.000 title claims abstract description 43
- 230000009977 dual effect Effects 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title abstract description 14
- 239000003973 paint Substances 0.000 claims abstract description 37
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000003848 UV Light-Curing Methods 0.000 claims abstract description 31
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 28
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 28
- 239000004814 polyurethane Substances 0.000 claims abstract description 23
- 229920002635 polyurethane Polymers 0.000 claims abstract description 23
- 238000001723 curing Methods 0.000 claims abstract description 22
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 20
- 125000001931 aliphatic group Chemical group 0.000 claims abstract description 19
- 239000011347 resin Substances 0.000 claims abstract description 17
- 229920005989 resin Polymers 0.000 claims abstract description 17
- 239000003999 initiator Substances 0.000 claims abstract description 16
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims abstract description 15
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 claims abstract description 15
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 12
- 229920002301 cellulose acetate Polymers 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims description 22
- 239000000203 mixture Substances 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 9
- 239000003085 diluting agent Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 239000004848 polyfunctional curative Substances 0.000 claims description 2
- 239000008199 coating composition Substances 0.000 claims 9
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims 1
- 239000000853 adhesive Substances 0.000 abstract description 5
- 230000001070 adhesive effect Effects 0.000 abstract description 5
- 238000004132 cross linking Methods 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000009966 trimming Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000005056 polyisocyanate Substances 0.000 description 2
- 229920001228 polyisocyanate Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 1
- 229920006491 ABS+PC Polymers 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 241001448624 Miliaria Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- -1 acrylic ester Chemical class 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000003678 scratch resistant effect Effects 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 230000009974 thixotropic effect Effects 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- 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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
-
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention provides a dual UV curing coating with ultrahigh boiling resistance, a preparation method and application thereof, wherein the dual UV curing coating comprises the following raw materials in parts by weight: 15-20 parts of hydroxyl acrylic resin, 14-20 parts of cellulose acetate resin, 8-10 parts of 6-functional aliphatic polyurethane acrylic resin, 10-15 parts of 2-4-functional aliphatic polyurethane acrylic resin, 15-20 parts of dual-curing polyurethane UV resin, 2-3 parts of ultraviolet initiator 184, 1-2 parts of ultraviolet initiator 819, 0.5-1.0 part of flatting agent, 10-15 parts of ethyl acetate and 10-15 parts of butyl acetate. Compared with the prior art, the paint film formed by the paint can reach boiling resistance of more than 8 hours at the temperature of 100 ℃; and the primer can be baked for 2 hours, and the primer can be placed for more than two weeks at normal temperature, and the finish paint also has good adhesive force and water resistance. This provides great convenience for customers in scheduling production and rework.
Description
Technical Field
The invention belongs to the field of coatings, and particularly relates to a dual UV (ultraviolet) curing coating with ultrahigh boiling resistance, a preparation method and application thereof; the Ultraviolet (UV) curing coating is used for automotive upholstery, and can be used for covering a UV paint film with ultrahigh boiling resistance after long-time baking of a primer.
Background
With the enhancement of environmental awareness, automobile accessory processing factories requiring the use of environment-friendly dual-curing UV coatings in the field of automobile interiors are increasing. But at the same time, the construction conditions for using the dual-curing UV are more and more severe, and the overall performance of the dual-curing UV system is more and more required.
In terms of construction conditions, the primer is required to be dried completely and thoroughly, for example, baking is performed at 80 ℃/24 hours, or the primer is baked at 80 ℃ for 2 hours and then is placed at normal temperature for 1-2 weeks, and then double-curing UV is covered; the paint film is required to have good interlayer adhesion in terms of performance requirements, and also is required to be capable of being subjected to a boiling test for a long time, for example, a test at 100 ℃ for 8 hours, not to foam and not to drop oil. Therefore, as market competition becomes more and more aggressive, the requirements on the performance of the paint become more and more high.
In the prior art, a patent with publication number CN 111073427A published in 4 months and 28 days in 2020 discloses an automobile interior part dual UV curing coating, a preparation method thereof and a paint film formed by the same, wherein the raw materials are as follows: 4-functional aliphatic polyurethane acrylic resin, 6-functional aliphatic polyurethane acrylic resin, 2-functional aliphatic polyurethane acrylic resin, epoxy acrylic resin, ultraviolet initiator 184, ultraviolet initiator TPO, leveling agent, ethyl acetate and butyl acetate. However, it does not meet the requirements of the UV paint film of the cover after long-time baking of the primer on the boiling resistance of 8 hours of boiling at 100 ℃.
Disclosure of Invention
The invention aims to provide a dual UV curing coating with ultrahigh boiling resistance and a preparation method thereof, wherein the dual UV curing coating has good adhesive force to plastic substrates of PC, ABS and PC, and a formed paint film has the ultrahigh boiling resistance and still is qualified after boiling for 8 hours at 100 ℃; meanwhile, the construction requirement that most processing factories need to put the primer for a long time and then cover UV can be met, and the paint can be put for more than two weeks at normal temperature and has good adhesive force and water resistance.
The invention also aims to provide an application of the double UV curing coating with ultrahigh boiling resistance for automotive upholstery.
The specific technical scheme of the invention is as follows:
the dual UV curing coating with the ultrahigh boiling resistance comprises the following raw materials in parts by weight:
the hydroxyl acrylic resin is hydroxyl acrylic resin with a hydroxyl value of 3.5; KN1052F hydroxy acrylic resin selected from Ke Lisen;
the mass concentration of the cellulose acetate resin solution is 20%; the solvent is butyl acetate or ethyl acetate.
The cellulose acetate resin is selected from CAB-551-0.01;
the leveling agent is BYK-371 type leveling agent, which can endow polyurethane UV paint with leveling property, so that the leveling property of the whole system is better.
The dual-cure polyurethane UV resin is selected from the group consisting of deujiu UV-1908;
the 6-functional aliphatic polyurethane acrylic resin is selected from Changxing 6145-100;
the 2-functional aliphatic urethane acrylic resin is selected from changxing 6123.
The ultra-high boiling-resistant dual UV curing coating provided by the invention, wherein the hydroxyl acrylic resin is used for providing the adhesion to the bottom and the overall flexibility of a matrix, the dual curing polyurethane acrylic UV resin provides the overall crosslinking density (such as crosslinking between UV resins and polyisocyanates), (N3390 contains polyisocyanate) 6-functional aliphatic polyurethane acrylic resin is used for providing the hardness and crosslinking density of a paint film, the surface of a coating is scratch-resistant, the 2-4-functional aliphatic polyurethane acrylic resin provides the flexibility of the paint film, and the cellulose acetate resin provides good drying property and sagging resistance. The ultraviolet initiator is used for initiating polymerization of the monomer and polyurethane, the leveling agent provides leveling property of a paint film, and ethyl acetate and butyl acetate are used as solvents to endow the paint with good fluidity and solvent release property. The invention uses 184 and 819 photo-initiator to absorb the ultraviolet rays of different wave bands in the ultraviolet region, so that the surface layer and the deep layer of the UV coating are cured thoroughly, thereby providing better surface performance for the paint film.
The invention provides a preparation method of a dual UV curing coating with ultrahigh boiling resistance, which comprises the following steps:
1) Under the condition of avoiding light, uniformly stirring 15-20 parts by weight of hydroxyl acrylic resin, 15-20 parts by weight of cellulose acetate resin solution, 8-10 parts by weight of 6-functional aliphatic polyurethane acrylic ester, 10-15 parts by weight of 2-4-functional aliphatic polyurethane acrylic resin and 15-20 parts of dual-cured polyurethane UV resin to obtain a mixture A;
2) Adding 2-3 parts of ultraviolet light initiator 184 and 1-2 parts of ultraviolet light initiator 819 into 10-15 parts of butyl acetate under stirring, and stirring and mixing to obtain a mixture B;
3) Adding the mixture B into the mixture A under the stirring condition, adding 0.5-1.0 part by weight of flatting agent, and stirring and uniformly mixing;
4) Continuously adding 10-15 parts by weight of ethyl acetate under the stirring condition to adjust the viscosity to 25 ℃ and the KU viscosity to 50-60KU, and filtering to obtain the dual UV curing coating with ultrahigh boiling resistance.
Stirring in the step 1) for 15+/-2 min;
step 2) stirring and mixing for 15+/-2 min;
step 3) stirring and uniformly mixing for 15+/-2 min;
the sieving in the step 4) refers to 300-mesh sieving;
the stirring speed in the preparation method is 400-800 rpm, and the whole preparation process is carried out under the condition of light shielding.
The application of the dual UV curing coating with the ultrahigh boiling resistance provided by the invention is used for automotive upholstery; the anti-boiling agent is used for beautifying and protecting the ultrahigh boiling resistance of the automobile interior trim part of the PC or ABS+PC base material.
The method comprises the following steps:
the dual UV curing coating with the ultrahigh boiling resistance is prepared with a curing agent and a diluent according to the weight ratio of 5:1:2-2.5, and is sprayed on a primer layer of an automotive upholstery, after Wen Liuping-5 minutes, the temperature is kept at 50-60 ℃ for 8-10 minutes, and a paint film of the dual UV curing coating with the ultrahigh boiling resistance can be formed after UV curing.
The curing agent refers to: according to the parts by weight: 80 parts of Bayer hardener N3390 and 20 parts of butyl acetate;
the diluent is obtained by mixing ethyl acetate, butyl acetate and ethylene glycol butyl ether BCS in a weight ratio of 70:25:5.
Further, after UV curing, the UV exposure energy is 1000-1200MJ/cm 2 Light, lightThe strength is 150-200 MW/cm 2 。
In the preparation method of the dual UV curing coating with ultrahigh boiling resistance, in order to prevent the curing and crosslinking of a preparation system in a semi-finished product state from occurring in the whole preparation process of the paint, the quality of the UV coating and the film forming performance of a paint film are influenced, and the whole preparation process is required to be carried out under a light-proof condition; the ultraviolet initiator must be dissolved in butyl acetate before being added into the reaction system to ensure that the ultraviolet initiator is uniformly dispersed in the system.
The paint film prepared by the raw materials and the method in the proportion has excellent water resistance, the compatibility of the ethyl acetate, the butyl acetate and the BCS ensures the dissolubility of the raw materials and improves the construction dryness, the paint film coating can achieve complete solidification and crosslinking, the solvent is free from residue and back adhesion, and the paint film has good dispersibility, moderate leveling property, moderate thixotropy, uniform coating, no obvious orange peel and needle eye bubbles, no impurity point, full leveling of the paint surface, good glossiness and good paint film smoothness. The emphasis on adding BCS is slow drying to improve leveling.
Compared with the prior art, the double UV curing coating which can meet the requirements of covering UV and ultra-high boiling resistance of a paint film after long-time baking of the primer has the crosslinking density which is greatly higher than that of the hot baking coating after curing, and the coating has high performance indexes in all aspects of hardness, wear resistance, acid and alkali resistance, salt spray resistance, gasoline resistance and other organic solvents, and particularly has the ultra-high boiling resistance which can reach the boiling resistance of more than 8 hours at the temperature of 100 ℃. Meanwhile, the double-curing UV has great advantages in terms of workability, and the traditional double-curing UV can only be placed for 3-4 days at a constant temperature for 2 hours when the primer is baked, so that the double-curing UV has good adhesive force and other properties. The invention can be baked for 2 hours at the primer, and can be placed for more than two weeks at normal temperature, and the finish paint also has good adhesive force and water resistance. This provides great convenience for customers in scheduling production and rework.
The automotive interior part provided by the invention meets the requirements of the primer on the double UV curing coating with the ultra-high boiling resistance of the cover UV and the paint film after long-time baking (the primer is baked for 15-20 hours at 80 ℃ in the test of a customer, the actual production generally has the condition of 2 hours for 2 weeks in the baking), the coating can be completely cured and crosslinked, the solvent is free from residue and non-back adhesion, and the coating has the advantages of good dispersibility, moderate leveling property, moderate thixotropic property, uniform coating, no obvious orange peel, no needle eye bubble and no impurity point. The paint surface is smooth and plump, has good glossiness and smoothness and lower cost.
Detailed Description
Example 1 to example 5
The dual UV curing coating with the ultrahigh boiling resistance comprises the following raw materials in parts by weight: see table 1.
Table 1 raw materials and parts by weight of each example
The preparation method of the coating in each embodiment is carried out under the light-proof condition, and comprises the following steps:
1) According to the formulation of each example in table 1, a hydroxy acrylic resin, a cellulose acetate resin solution, a 6-functional aliphatic urethane acrylate, a 2-functional aliphatic urethane acrylic resin and a dual-cure urethane resin were stirred at 500 rpm for 15 minutes to obtain a mixture a;
2) Stirring butyl acetate with the formula amount under the condition of 500 revolutions per minute, adding an ultraviolet initiator 184 and an ultraviolet initiator 819 under the stirring condition, and stirring for 15min to obtain a mixture B;
3) Slowly adding the mixture B into the mixture A under the stirring condition of 500 revolutions per minute, and then adding the flatting agent BYK-371 to stir for 15min;
4) Continuously adding ethyl acetate under the stirring condition of 500 revolutions per minute, adjusting the KU viscosity to 50-60KU at 25 ℃, and filtering with 300 meshes to obtain the dual UV curing coating with ultrahigh boiling resistance.
The dual UV curing coating with ultrahigh boiling resistance prepared in each example is mixed with a curing agent and a diluent according to the weight ratio of 5:1:2.5, uniformly mixing, wherein the curing agent is prepared by mixing 80 parts by mass of curing agent N3390 and 20 parts by mass of butyl acetate; the diluent comprises the following components in parts by mass: 70 parts of ethyl acetate, 25 parts of butyl acetate and 5 parts of BCS solvent are mixed and stirred for 10min to prepare the compound.
Spraying the obtained double UV-cured coating on a primer layer of the dried automotive upholstery, leveling and drying at normal temperature for 3 minutes, keeping at 60 ℃ for 8 minutes, and then carrying out UV curing, wherein the UV exposure energy is 1000MJ/cm 2 The light intensity was 150MW/cm 2 . The paint film properties were tested and the test criteria were as follows:
appearance: and evaluating whether the film has surface flaws such as foaming, orange peel, shrinkage cavity, ripple, miliaria and the like.
Pot life: evaluating whether abnormal conditions such as thickening, layering, gumming, color changing, thickening and the like appear in the paint within the shelf life;
the test standard of other properties of the paint film is shown in the Q/BYD-A1906.4119-2017 standard of BYD.
The results of the detection of the paint films of the respective examples are shown in Table 2.
TABLE 2 paint film Properties for example 1
Examples 1-3 are for comparison and do not meet the requirements of the present invention. Examples 4-5 are successful cases of the present invention.
In Table 1, the adhesion on the substrate (grade) was set for a long period of time at 0-5 grade, with grade 0 and grade 1 being acceptable and the other grade being unacceptable. The long-term standing refers to standing for more than 2 weeks after baking at 80 ℃ for 2 hours.
The other properties in Table 1 are all measured after 2 weeks of finish after baking at 80℃for 2 hours.
The underlined data in the above table are data that do not satisfy the requirements of the present invention.
The Q/BYD-A1906.4119-2017 of BYD is the most strict standard in the automobile exterior trimming part industry, most automobile interior trimming part manufacturers are equivalent to adopt the standard of Q/BYD-A1906.4119-2017 to detect the performance of paint, and the automobile interior trimming part provided by the invention can meet the requirements of the Q/BYD-A1906.4119-2017 standard after the primer is baked for a long time and the dual UV curing coating with ultra-high boiling resistance of the paint film is subjected to multiple performance tests.
As can be seen from the above table 2, the ultra-high boiling resistant dual UV curable coating disclosed by the invention can completely meet the BYD Q/BYD-a1906.4119-2017 standard; and the paint film obtained in each embodiment has uniform coating, no obvious orange peel or needle bubble, no impurity point, and good glossiness and smoothness.
The above detailed description of a dual UV curable coating material with ultra-high poaching resistance and a method for preparing the same and application thereof is illustrative and not restrictive, and several embodiments may be listed according to the defined scope, thus variations and modifications without departing from the general inventive concept shall fall within the scope of protection of the present invention.
Claims (9)
1. The dual UV curing coating composition with the ultrahigh boiling resistance is characterized in that the dual UV curing coating composition with the ultrahigh boiling resistance is prepared from a dual UV curing coating with the ultrahigh boiling resistance, a curing agent and a diluent according to the weight ratio of 5:1:2-2.5;
the dual UV curing coating with the ultrahigh boiling resistance comprises the following raw materials in parts by weight:
15-20 parts of hydroxy acrylic resin;
14-20 parts of cellulose acetate resin solution;
8-10 parts of 6-functional aliphatic polyurethane acrylic resin; 10-15 parts of 2-4 functional aliphatic polyurethane acrylic resin; 15-20 parts of dual-cured polyurethane UV resin;
2-3 parts of ultraviolet initiator; 1-2 parts of ultraviolet initiator 819;
0.5-1.0 part of leveling agent;
10-15 parts of ethyl acetate;
10-15 parts of butyl acetate;
the dual-cure polyurethane UV resin is selected from the group consisting of deujiu UV-1908;
the curing agent refers to: according to the parts by weight: 80 parts of Bayer hardener N3390 are mixed with 20 parts of butyl acetate.
2. The ultra-high water boiling resistant dual UV curable coating composition according to claim 1, wherein the hydroxy acrylic resin is selected from KN1052F hydroxy acrylic resin of Ke Lisen.
3. The ultra-high water boiling resistant dual UV curable coating composition according to claim 1, wherein the cellulose acetate resin solution is selected from CAB-551-0.01.
4. The ultra-high water boiling resistant dual UV curable coating composition according to claim 1, wherein the leveling agent is a BYK-371 type leveling agent.
5. The ultra-high water boiling resistant dual UV curable coating composition according to claim 1, wherein the 6 functional aliphatic urethane acrylic resin is selected from the group consisting of changxing 6145-100.
6. The ultra-high water boiling resistant dual UV curable coating composition of claim 1, wherein the 2-4 functional aliphatic urethane acrylic resin is selected from the group consisting of changxing 6123.
7. A process for preparing a dual UV curable coating composition having ultra-high poaching resistance according to any one of claims 1-6, said process comprising the steps of:
1) Under the light-shielding condition, uniformly stirring 15-20 parts by weight of hydroxyl acrylic resin, 15-20 parts by weight of cellulose acetate resin solution, 8-10 parts by weight of 6-functional aliphatic polyurethane acrylate, 10-15 parts by weight of 2-4-functional aliphatic polyurethane acrylic resin and 15-20 parts of dual-cured polyurethane UV resin to obtain a mixture A;
2) Adding 2-3 parts of ultraviolet light initiator 184 and 1-2 parts of ultraviolet light initiator 819 into 10-15 parts of butyl acetate under stirring, and stirring and mixing to obtain a mixture B;
3) Adding the mixture B into the mixture A under the stirring condition, adding 0.5-1.0 part by weight of flatting agent, and stirring and uniformly mixing;
4) And continuously adding 10-15 parts by weight of ethyl acetate under the stirring condition, adjusting the viscosity to 25 ℃, enabling the KU viscosity to be 50-60KU, and filtering to obtain the dual UV curing coating with ultrahigh boiling resistance.
8. Use of the ultra-high poaching resistant dual UV-curable coating composition according to any one of claims 1-6, for automotive interior trim parts.
9. The application according to claim 8, wherein the specific application method is: the dual UV curing coating with the ultrahigh boiling resistance is prepared with a curing agent and a diluent according to the weight ratio of 5:1:2-2.5, and is sprayed on a primer layer of an automotive interior trim part, after Wen Liuping-5 minutes, the temperature is kept at 50-60 ℃ for 8-10 minutes, and a paint film of the dual UV curing coating with the ultrahigh boiling resistance can be formed after UV curing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310156434.XA CN116082944B (en) | 2023-02-23 | 2023-02-23 | Dual UV (ultraviolet) curing coating with ultrahigh boiling resistance, and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310156434.XA CN116082944B (en) | 2023-02-23 | 2023-02-23 | Dual UV (ultraviolet) curing coating with ultrahigh boiling resistance, and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN116082944A CN116082944A (en) | 2023-05-09 |
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| JPS54129034A (en) * | 1978-03-30 | 1979-10-06 | Kao Corp | Coating resin composition curable with actinic energy radiation |
| CN104178017A (en) * | 2014-08-25 | 2014-12-03 | 江苏海田技术有限公司 | Optical-thermal double-solidified baikeding for tinplate and coating method thereof |
| CN109280477A (en) * | 2018-09-18 | 2019-01-29 | 芜湖春风新材料有限公司 | A kind of preparation method of coloured dual cure UV coating |
| CN110982419A (en) * | 2019-12-25 | 2020-04-10 | 清远雅克化工有限公司 | Special high-performance dual-curing UV (ultraviolet) coating for automotive upholstery and preparation method thereof |
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| JPS54129034A (en) * | 1978-03-30 | 1979-10-06 | Kao Corp | Coating resin composition curable with actinic energy radiation |
| CN104178017A (en) * | 2014-08-25 | 2014-12-03 | 江苏海田技术有限公司 | Optical-thermal double-solidified baikeding for tinplate and coating method thereof |
| CN109280477A (en) * | 2018-09-18 | 2019-01-29 | 芜湖春风新材料有限公司 | A kind of preparation method of coloured dual cure UV coating |
| CN110982419A (en) * | 2019-12-25 | 2020-04-10 | 清远雅克化工有限公司 | Special high-performance dual-curing UV (ultraviolet) coating for automotive upholstery and preparation method thereof |
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