CN111087919A - Scratch-resistant coating composition with good flexibility and good surface dryness before UV curing - Google Patents
Scratch-resistant coating composition with good flexibility and good surface dryness before UV curing Download PDFInfo
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- CN111087919A CN111087919A CN201911328079.XA CN201911328079A CN111087919A CN 111087919 A CN111087919 A CN 111087919A CN 201911328079 A CN201911328079 A CN 201911328079A CN 111087919 A CN111087919 A CN 111087919A
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- good
- coating composition
- curing
- resistant coating
- scratch
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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
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
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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
- 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
- C09D7/20—Diluents or solvents
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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
- C09D7/65—Additives macromolecular
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2475/04—Polyurethanes
- C08J2475/14—Polyurethanes having carbon-to-carbon unsaturated bonds
Abstract
The invention discloses a scratch-resistant coating composition with good flexibility and good surface dryness before UV curing; the composition comprises the following raw material components in percentage by mass: 30-65% of light-cured resin, 5-20% of photopolymerization monomer, 2-3% of photoinitiator, 17-50% of solvent and 1-3% of filler. The coating composition prepared by the invention is good in surface dryness and flexibility after thermosetting, and has the characteristics of high hardness and scratch resistance after UV curing.
Description
Technical Field
The invention belongs to the technical field of coatings, particularly relates to a UV (ultraviolet) photocureable coating, and particularly relates to a scratch-resistant coating composition with good flexibility and good surface dryness before UV curing.
Background
The coating is a fluid state or powder state substance, which is coated on the surface of an object, dried and solidified by a natural or artificial method to form a layer of film, and the film is uniformly covered and well adhered on the surface of the object, thereby having the functions of protection and decoration.
With the aggravation of the competitive degree of products, the surface of the conventional UV curing coating is sticky before curing, and the requirement of in-mold decoration in the field of three-dimensional decoration cannot be met, for example, patent document CN101735676A discloses an ultraviolet spraying matte varnish for office furniture, which is composed of A, B two components, wherein the weight ratio of the component A to the component B is 0.3-0.5: 1. The component A comprises the following components in percentage by weight: 25 to 35 percent of butyl acetate and 65 to 75 percent of ethyl acetate; the component B comprises the following components in percentage by weight: 35-45% of modified acrylate, 40-50% of functional monomer, 0.1-0.3% of defoaming agent, 1-2% of flatting agent, 0-8% of filler, 3-5.0% of photoinitiator, 0.5-1.0% of dispersing agent, 0.05-0.5% of anti-settling agent and 0-2% of nitrocellulose ester. The surface of the coating is sticky after the solvent is dried and cannot be rolled.
Therefore, a scratch-resistant coating composition which can meet the requirements of film interior decoration in the field of three-dimensional decoration is needed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a scratch-resistant coating composition which has good flexibility and good surface dryness before UV curing, and can meet the requirements of film interior decoration in the field of three-dimensional decoration.
The purpose of the invention is realized by the following technical scheme:
the invention provides a scratch-resistant coating composition with good flexibility and good surface dryness before UV curing, which comprises the following raw material components in percentage by mass: 30-65% of light-cured resin, 5-20% of photopolymerization monomer, 2-3% of photoinitiator, 17-50% of solvent and 1-3% of filler.
Preferably, the light-cured resin is aliphatic polyurethane acrylic resin. More preferably an aliphatic urethane acrylic resin having a functionality of 6 or more.
Preferably, the photopolymerizable monomer is dipentaerythritol hexapropionate.
Preferably, the photoinitiator is 1-hydroxy-cyclohexylbenzophenone.
Preferably, the solvent consists of 20-80% of n-butyl acetate and 20-80% of butanone.
Preferably, the filler is hydroxymethyl cellulose.
The surface drying of the solvent after drying can be ensured by specifically selecting the resin and the hydroxymethyl cellulose, and the hardness of the dipentaerythritol hexapropionate after curing can be ensured.
Compared with the prior art, the invention has the following beneficial effects:
the coating composition of the invention is flexible and well surface-dried before ultraviolet curing; after ultraviolet curing, the hardness of the PET substrate can reach 2H, and the PET substrate has good adhesiveness.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
Example 1
The scratch-resistant coating composition with good flexibility and good surface dryness before UV curing comprises the following raw materials in percentage by mass: 55% of light-cured resin, 5% of photopolymerization monomer, 2% of photoinitiator, 35% of solvent and 3% of filler. The light-cured resin is aliphatic polyurethane acrylic resin (specifically MIRAMER PU5000 of MIWON), the photopolymerization monomer is dipentaerythritol hexapropionate, the photoinitiator is 1-hydroxy-cyclohexyl benzophenone, the solvent is composed of 20% of n-butyl acetate and 80% of butanone, and the filler is hydroxymethyl cellulose.
The preparation method of the composition comprises the following steps:
and uniformly mixing the photocuring resin, the photopolymerization monomer, the photoinitiator, the solvent and the filler. In the embodiment of the invention, the uniform mixing mode is not limited, and can be stirring, ultrasonic and the like, and the material can be uniformly mixed. Alternatively, the stirring speed is 300-3000 rpm, and the stirring time is 0.1-1 hour.
Example 2
The scratch-resistant coating composition with good flexibility and good surface dryness before UV curing comprises the following raw materials in percentage by mass: 65% of light-cured resin, 6.5% of photopolymerisable monomer, 3% of photoinitiator, 24% of solvent and 1.5% of filler. The light-cured resin is composed of 100% of aliphatic polyurethane acrylic resin (specifically W2392-2 of Wuxing company), and is aliphatic polyurethane acrylic resin. The photopolymerization monomer is dipentaerythritol hexapropionate, the photoinitiator is 1-hydroxy-cyclohexyl benzophenone, the solvent is composed of 20% of n-butyl acetate and 80% of butanone, and the filler is hydroxymethyl cellulose.
Example 3
The scratch-resistant coating composition with good flexibility and good surface dryness before UV curing comprises the following raw materials in percentage by mass: 33% of light-cured resin, 10% of photopolymerisable monomer, 2% of photoinitiator, 50% of solvent and 1% of filler. The light-cured resin is composed of 100% of aliphatic polyurethane acrylic resin (specifically 601Q-35 of the Changxing company), and is aliphatic polyurethane acrylic resin. The photopolymerization monomer is dipentaerythritol hexapropionate, the photoinitiator is 1-hydroxy-cyclohexyl benzophenone, the solvent is composed of 20% of n-butyl acetate and 80% of butanone, and the filler is hydroxymethyl cellulose.
Comparative example 1
This comparative example is essentially the same composition as the composition of example 1, except that: the aliphatic polyurethane acrylic resin used in this comparative example was product 6185 from Changxing.
The preparation method is the same as in example 1.
Comparative example 2
This comparative example is essentially the same composition as the composition of example 1, except that: this comparative example uses neopentyl glycol diacrylate instead of dipentaerythritol hexapropionate.
The preparation method is the same as in example 1.
Comparative example 3
This comparative example is essentially the same composition as the composition of example 1, except that: this comparative example uses methylcellulose instead of hydroxymethylcellulose.
The preparation method is the same as in example 1.
Comparative example 4
This comparative example is essentially the same composition as the composition of example 1, except that: this comparative example uses an aromatic urethane acrylic resin (a product of Haohui HP6310) instead of the aliphatic urethane acrylic resin.
The preparation method is the same as in example 1.
The performances of examples 1 to 3 and comparative examples 1 to 3 were tested by the following specific methods:
1. flexible in two-fold
The flexibility of the coating is tested by folding the coating in half, and the method specifically comprises the following steps:
a PET substrate is used for preparing a sample with the same film thickness, and after the solvent is dried, the substrate is folded in half to visually observe whether the coating cracks.
2. Hardness of pencil
Hardness test experiments were carried out for examples 1 to 3 and comparative examples 1 to 3 in accordance with GB6739-86 Pencil test method for hardness of coating film. The experiments were as follows:
a PET substrate is used for preparing a sample with the same film thickness, after UV curing, a 2H pencil is selected, the weight is 750g, the pencil is placed on a hardness tester, the pencil is heavily plowed, and whether the paint film is scratched or not is visually observed.
3. Adhesion force
Examples 1-3 and comparative examples 1-3 were tested for adhesion according to ASTM D3359-1997 paint adhesion test.
The results are shown in Table 1.
TABLE 1 results of the performance tests of examples 1-3
As shown in Table 1, comparative example 1 is inferior to example 1 in surface dryness before curing and scratch resistance after curing, and the aliphatic urethane acrylic resin used in example 1 has 6-functional groups and is inferior in viscosity to the 2-functional aliphatic urethane acrylic resin used in comparative example 1 in surface dryness before curing. Comparative example 2 has lower hardness after curing than example 1, and the photopolymerizable monomer used in example 2 is dipentaerythritol hexapropionate, which has higher functionality and higher hardness after curing than neopentyl glycol diacrylate. Comparative example 3 has a poor surface dryness before curing as compared with example 1, and the hydroxymethyl cellulose used in the examples can improve the surface dryness before curing better. Comparative example 4 was inferior to example 1 in terms of adhesion after curing, and the aromatic urethane acrylate used in comparative example 4 was cured to shrink more, resulting in poor adhesion.
The coating compositions prepared in examples 1-3 were flexible and tack free before UV curing, and had a hardness of 750g/2H, scratch resistance OK, and a 5B Pogger after UV curing.
The invention has many applications, and the above description is only a preferred embodiment of the invention. It should be noted that the above examples are only for illustrating the present invention, and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications can be made without departing from the principles of the invention and these modifications are to be considered within the scope of the invention.
Claims (6)
1. A scratch-resistant coating composition with good flexibility and good surface dryness before UV curing is characterized in that: the material comprises the following raw material components in percentage by mass: 30-65% of light-cured resin, 5-20% of photopolymerization monomer, 2-3% of photoinitiator, 17-50% of solvent and 1-3% of filler.
2. The pre-UV curable, good flexibility, good surface dry scratch resistant coating composition of claim 1 characterized by: the light-cured resin is polyurethane acrylic resin.
3. The pre-UV curable, good flexibility, good surface dry scratch resistant coating composition of claim 1 characterized by: the photopolymerization monomer is dipentaerythritol hexapropionate.
4. The pre-UV curable, good flexibility, good surface dry scratch resistant coating composition of claim 1 characterized by: the photoinitiator is 1-hydroxy-cyclohexyl benzophenone.
5. The pre-UV curable, good flexibility, good surface dry scratch resistant coating composition of claim 1 characterized by: the solvent consists of 20 to 80 percent of n-butyl acetate and 20 to 80 percent of butanone.
6. The pre-UV curable, good flexibility, good surface dry scratch resistant coating composition of claim 1 characterized by: the filler is hydroxymethyl cellulose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911328079.XA CN111087919A (en) | 2019-12-20 | 2019-12-20 | Scratch-resistant coating composition with good flexibility and good surface dryness before UV curing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911328079.XA CN111087919A (en) | 2019-12-20 | 2019-12-20 | Scratch-resistant coating composition with good flexibility and good surface dryness before UV curing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111087919A true CN111087919A (en) | 2020-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911328079.XA Pending CN111087919A (en) | 2019-12-20 | 2019-12-20 | Scratch-resistant coating composition with good flexibility and good surface dryness before UV curing |
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| CN (1) | CN111087919A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1803942A (en) * | 2005-12-26 | 2006-07-19 | 中国化工建设总公司常州涂料化工研究院 | Ultraviolet curing coating for metal plating surface protection |
| CN104177885A (en) * | 2014-08-18 | 2014-12-03 | 张家港康得新光电材料有限公司 | Hardening paint and preparation method thereof, and automobile window film |
| CN106147636A (en) * | 2015-04-01 | 2016-11-23 | 上海精涂新材料技术有限公司 | A kind of hardening protecting film and production method thereof |
| CN106634103A (en) * | 2016-12-30 | 2017-05-10 | Ppg涂料(天津)有限公司 | Anti-dazzle UV curable coating composition, coating method and substrate coated by it |
-
2019
- 2019-12-20 CN CN201911328079.XA patent/CN111087919A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1803942A (en) * | 2005-12-26 | 2006-07-19 | 中国化工建设总公司常州涂料化工研究院 | Ultraviolet curing coating for metal plating surface protection |
| CN104177885A (en) * | 2014-08-18 | 2014-12-03 | 张家港康得新光电材料有限公司 | Hardening paint and preparation method thereof, and automobile window film |
| CN106147636A (en) * | 2015-04-01 | 2016-11-23 | 上海精涂新材料技术有限公司 | A kind of hardening protecting film and production method thereof |
| CN106634103A (en) * | 2016-12-30 | 2017-05-10 | Ppg涂料(天津)有限公司 | Anti-dazzle UV curable coating composition, coating method and substrate coated by it |
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Application publication date: 20200501 |