CN114752297B - Special light-sensitive coating and preparation method thereof - Google Patents
Special light-sensitive coating and preparation method thereof Download PDFInfo
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- CN114752297B CN114752297B CN202210411659.0A CN202210411659A CN114752297B CN 114752297 B CN114752297 B CN 114752297B CN 202210411659 A CN202210411659 A CN 202210411659A CN 114752297 B CN114752297 B CN 114752297B
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- water
- light
- acrylic resin
- sensitive paint
- sensitive
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/29—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for multicolour effects
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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
- 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
Abstract
A light-sensitive paint comprises 25-40% of polyurethane acrylate prepolymer, 5-10% of water-absorbing acrylic resin microcapsule, 1-5% of reactive dispersant, 10-20% of photosensitive powder, 1-10% of photoinitiator and the balance of water; the dispersing agent is a reactive dispersing agent, and the reactive dispersing agent is acrylamide sulfonate; the water-absorbing acrylic resin microcapsule has a core-shell structure, wherein the shell is high polymer resin, and the core is water-absorbing acrylic resin.
Description
Technical Field
The invention relates to a light-sensitive paint and a preparation method thereof.
Background
The light-sensitive paint is generally characterized in that the paint does not change color or fall off under the irradiation of a fluorescent lamp or a strong light lamp at normal temperature, and can keep certain physical and mechanical properties and take on another color after being irradiated by sunlight. The coating can be applied to the field of cosmetics, endows the wrapping material with special performance, and can attract the public more when used in some special products, thereby improving the cheerful drinking degree of the products. At the same time, the light-sensitive paint can have a plurality of good performances such as weather resistance by adjusting the paint formula, so that the product can be used in a wider natural area.
Because of the environmental protection requirement and the green concept, most of the current light-sensitive coatings are water-based systems, the components such as resin, photosensitive materials and the like need to be dispersed in water, and the photosensitive materials are easy to agglomerate after the dispersion system is dried, so that the photosensitive color-changing performance is affected. Meanwhile, the reversibility of the light-sensitive paint is often low in efficiency, and the lack of sufficient oxidization results in low reversibility efficiency, so that it is necessary to improve the reversible color change performance of the light-sensitive paint.
Disclosure of Invention
The invention aims to provide a special light-sensitive paint which can improve reversible color change performance of the light-sensitive paint.
The technical scheme of the invention is as follows:
a light-sensitive paint comprises 25-40% of polyurethane acrylate prepolymer, 5-10% of water-absorbing acrylic resin microcapsule, 1-5% of reactive dispersant, 10-20% of photosensitive powder, 1-10% of photoinitiator and the balance of water;
the method is characterized in that: the dispersing agent is a reactive dispersing agent, and the reactive dispersing agent is acrylamide sulfonate;
the water-absorbing acrylic resin microcapsule has a core-shell structure, wherein the shell is high polymer resin, and the core is water-absorbing acrylic resin.
Further, the light-sensitive paint is provided with auxiliary toner, and the content of the auxiliary toner is 5-10%.
Further, the toner is an organic pigment or an inorganic pigment.
Further, the initiator is a water-soluble initiator.
Furthermore, the photosensitive powder is furanone pigment or spiropyran pigment.
Further, the preparation process of the water-absorbent acrylic resin microcapsule comprises the following steps:
placing a certain amount of water-absorbent resin, cyclohexane and petroleum ether into a three-neck flask;
weighing butyl acrylate prepolymer, adding the butyl acrylate prepolymer into ethyl acetate solvent, and sequentially carrying out ultrasonic oscillation dispersion and water bath heating treatment to obtain wall material solution;
adding the wall material solution into the three-neck flask, reacting for 50 minutes at 90 ℃, and then reducing the reaction temperature to 70 ℃;
slowly adding the mixture of butyl acrylate and acrylic acid containing azodiisobutyronitrile, continuously reacting for a period of time at 70 ℃, cooling the device, and collecting samples.
The invention also aims at providing a preparation method of the light-sensitive paint, which comprises the following steps:
(1) Adding water solvent, resin, prepolymer, microcapsule and reactive dispersant in required amount into a container for high-speed dispersion;
(2) Dispersing and mixing a reaction dispersing agent, photosensitive toner and a water solvent to obtain a dispersion liquid;
(3) Adding pigment to color the product to form a paint finished product;
(4) Packaging the coating product and the photoinitiator separately, and mixing the coating product and the photoinitiator before use.
The scheme of the invention can realize the following technical effects:
1. after the light-sensitive coating is formed into a film, the water-absorbing acrylic resin microcapsule can improve the water absorption performance, so that the reversible color change effect of the light-sensitive powder is improved.
2. The water absorption acrylic resin microcapsule of the light-sensitive coating slows down the water absorption saturation, and improves the effective reversible color-changing period of the coating; the water absorption speed can be changed by adjusting the core-shell ratio of the microcapsule, and the controllability is improved.
3. The light-sensitive paint uses the reactive dispersing agent, and the reactive dispersing agent can participate in the curing reaction, so that the photosensitive powder is uniformly dispersed, and the photosensitive color-changing performance is improved.
4. The light-sensitive paint of the invention does not use industrial solvent, does not use a large amount of diluted monomer, and has excellent environmental protection performance.
Detailed Description
The starting materials described in the examples are all commercially available
Example 1
A special light-sensitive coating comprises 30% of polyurethane acrylate prepolymer, 5% of water-absorbing acrylic resin microcapsule, 1% of reactive dispersant, 20% of photosensitive powder, 1% -10% of photoinitiator and the balance of water;
the method is characterized in that: the dispersing agent is a reactive dispersing agent, and the reactive dispersing agent is acrylamide sulfonate;
the water-absorbing acrylic resin microcapsule has a core-shell structure, wherein the shell is high polymer resin, and the core is water-absorbing acrylic resin.
Further, the light-sensitive paint has an auxiliary toner with a content of 8%.
Further, the toner is an organic pigment or an inorganic pigment.
Further, the initiator is a water-soluble initiator.
Furthermore, the photosensitive powder is furanone pigment or spiropyran pigment.
Further, the preparation process of the water-absorbent acrylic resin microcapsule comprises the following steps:
placing a certain amount of super absorbent resin, cyclohexane and petroleum ether into a three-neck flask;
weighing butyl acrylate prepolymer, adding the butyl acrylate prepolymer into ethyl acetate solvent, and sequentially carrying out ultrasonic oscillation dispersion and water bath heating treatment to obtain wall material solution;
adding the wall material solution into the three-neck flask, reacting for 50 minutes at 90 ℃, and then reducing the reaction temperature to 70 ℃;
slowly adding the mixture of butyl acrylate and acrylic acid containing azodiisobutyronitrile, continuously reacting for a period of time at 70 ℃, cooling the device, and collecting samples.
The preparation method of the light-sensitive paint comprises the following steps:
(1) Adding water solvent, resin, prepolymer, microcapsule and reactive dispersant in required amount into a container for high-speed dispersion;
(2) Dispersing and mixing a reaction dispersing agent, photosensitive toner and a water solvent to obtain a dispersion liquid;
(3) Adding pigment to color the product to form a paint finished product;
(4) Packaging the coating product and the photoinitiator separately, and mixing the coating product and the photoinitiator before use.
The preparation process of the coating finished product comprises the following steps: the light-sensitive coating liquid composition is coated on one surface of a PET film, dried in an oven at 80 ℃ for 5min, the dried coating is solidified by an LED light source, and the thickness of the photochromic coating layer is controlled to be 4-6 mu m, so that a coating finished product is prepared.
Testing and evaluation
Light-sensitive paint storage stability: and (3) after the prepared photochromic paint is placed at room temperature and stored for 3-6 months in a dark place, the storage stability of the paint is inspected, and the time period that the paint keeps dispersion stability and does not precipitate is recorded.
The yellowing resistance test method of the coating comprises the following steps: and (3) irradiating the prepared coating finished product in an ultraviolet tester for 300 hours, 500 hours and 2000 hours by ultraviolet rays, and testing the yellowing degree of the coating finished product.
The paint test result obtained in the example 1 shows that the storage stability reaches 6 months and the yellowing resistance time reaches 2000 hours.
The above description of the embodiments is only for aiding in the understanding of the method of the present invention and its core ideas. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. A light-sensitive paint comprises 25-40% of polyurethane acrylate prepolymer, 5-10% of water-absorbing acrylic resin microcapsule, 1-5% of reactive dispersant, 10-20% of photosensitive powder, 1-10% of photoinitiator and the balance of water; the method is characterized in that: the reactive dispersant is acrylamide sulfonate; the water-absorbing acrylic resin microcapsule has a core-shell structure, wherein the shell is high polymer resin, and the core is water-absorbing acrylic resin;
the preparation process of the water-absorbing acrylic resin microcapsule comprises the following steps:
placing a certain amount of water-absorbent resin, cyclohexane and petroleum ether into a three-neck flask;
weighing butyl acrylate prepolymer, adding the butyl acrylate prepolymer into ethyl acetate solvent, and sequentially carrying out ultrasonic oscillation dispersion and water bath heating treatment to obtain wall material solution;
adding the wall material solution into the three-neck flask, reacting for 50 minutes at 90 ℃, and then reducing the reaction temperature to 70 ℃;
slowly adding the mixture of butyl acrylate and acrylic acid containing azodiisobutyronitrile, continuously reacting for a period of time at 70 ℃, cooling the device, and collecting samples.
2. The light-sensitive paint as claimed in claim 1, wherein the light-sensitive paint has an auxiliary toner content of 5 to 10%.
3. The light-sensitive paint according to claim 2, wherein the toner is an organic pigment or an inorganic pigment.
4. The light sensitive coating of claim 1 wherein the initiator is a water soluble initiator.
5. The light-sensitive paint according to claim 1, wherein the photosensitive powder is a furanone pigment or a spiropyran pigment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210411659.0A CN114752297B (en) | 2022-04-19 | 2022-04-19 | Special light-sensitive coating and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210411659.0A CN114752297B (en) | 2022-04-19 | 2022-04-19 | Special light-sensitive coating and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN114752297A CN114752297A (en) | 2022-07-15 |
| CN114752297B true CN114752297B (en) | 2023-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210411659.0A Active CN114752297B (en) | 2022-04-19 | 2022-04-19 | Special light-sensitive coating and preparation method thereof |
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| CN (1) | CN114752297B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012075293A2 (en) * | 2010-12-01 | 2012-06-07 | Isp Investments Inc. | Hydrogel microcapsules |
| WO2017186155A1 (en) * | 2016-04-29 | 2017-11-02 | 上海创始实业（集团）有限公司 | Superabsorbent thermochromic resin and preparation method therefor |
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| CN101985531A (en) * | 2010-03-17 | 2011-03-16 | 上海宏盾防伪材料有限公司 | Photosensitive coating and preparation method thereof and photosensitive film made by utilizing same |
| JP6407988B2 (en) * | 2013-06-26 | 2018-10-17 | モメンティブ パフォーマンス マテリアルズ ゲーエムベーハー | Photocurable coating composition and use thereof |
| CN104927485A (en) * | 2015-06-12 | 2015-09-23 | 西安理工大学 | Water-based UV ink for ink jet printing and preparing method thereof |
| CN106000248B (en) * | 2016-05-30 | 2018-07-13 | 常熟理工学院 | A kind of preparation method of controllable expansion super moisture absorbing resin microcapsules |
| CN107325603B (en) * | 2017-07-14 | 2019-06-21 | 张家港康得新光电材料有限公司 | A kind of aqueous photochromic coating, nail polish and ornament materials |
| CN109535952B (en) * | 2018-11-22 | 2020-06-16 | 中国石油大学(北京) | Reversible photochromic coating and preparation method thereof |
| CN109504195A (en) * | 2018-11-26 | 2019-03-22 | 江苏万宝瑞达高新技术有限公司 | A kind of protection layer for paint and preparation method thereof suitable for thermosensitive film |
| CN109880509A (en) * | 2019-01-29 | 2019-06-14 | 张家港康得新光电材料有限公司 | Aqueous allochroic paint and its painting membrane product |
| CN110804381A (en) * | 2019-12-03 | 2020-02-18 | 郑州鸿盛数码科技股份有限公司 | Primer liquid suitable for printing non-absorbent printing medium by using water-based pigment ink, preparation method and application |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012075293A2 (en) * | 2010-12-01 | 2012-06-07 | Isp Investments Inc. | Hydrogel microcapsules |
| WO2017186155A1 (en) * | 2016-04-29 | 2017-11-02 | 上海创始实业（集团）有限公司 | Superabsorbent thermochromic resin and preparation method therefor |
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| CN114752297A (en) | 2022-07-15 |
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