CN115477886B - Water-based folding-resistant high-brightness composite coating and preparation method thereof - Google Patents
Water-based folding-resistant high-brightness composite coating and preparation method thereof Download PDFInfo
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- CN115477886B CN115477886B CN202210927786.6A CN202210927786A CN115477886B CN 115477886 B CN115477886 B CN 115477886B CN 202210927786 A CN202210927786 A CN 202210927786A CN 115477886 B CN115477886 B CN 115477886B
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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
- C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
- C09D151/08—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- 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
- C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
- C08F290/02—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated end groups
- C08F290/06—Polymers provided for in subclass C08G
- C08F290/064—Polymers containing more than one epoxy group per molecule
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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
- C09D5/08—Anti-corrosive paints
Abstract
The invention relates to the field of IPC classified C09D133/00, in particular to a water-based folding-resistant high-brightness composite coating and a preparation method thereof. The water-based folding-resistant high-brightness composite coating comprises the following raw materials in parts by mass: 80-120 parts of epoxy modified composite emulsion, 10-50 parts of organic acid resin, 50-300 parts of diluent and 4-15 parts of functional auxiliary agent. The coating prepared by the method has good folding resistance, corrosion resistance and higher laser brightness, effectively improves the adhesion between the coating and the PET corona base film, is suitable for popularization in the field of packaging materials, and has wide development prospect.
Description
Technical Field
The invention relates to the field of IPC classified C09D133/00, in particular to a water-based folding-resistant high-brightness composite coating and a preparation method thereof.
Background
Aqueous acrylic emulsion is widely applied and studied in the field of aqueous paint in recent years because of good weather resistance, corrosion resistance and film forming effect.
In recent years, with the development of aqueous acrylic resin coatings, the applications thereof in various fields, such as building protective coatings, metal protective paints, hydrophobic coatings, and the like, are becoming widespread. The prior art (CN 201811355735.0) provides a coating of aqueous acrylic resin, which mainly adopts fluorine-containing acrylic monomer as raw material, has good waterproof performance, but the smooth characteristic of the coating is easy to obviously reduce the performances of adhesion, folding endurance and the like of the coating and obviously reduce the brightness because of the addition of fluorine.
Therefore, there is a need for a composite acrylic coating having excellent adhesion, folding endurance, and good brightness.
Disclosure of Invention
In order to solve the problems, the first aspect of the invention provides an aqueous folding-resistant high-brightness composite coating, which comprises the following raw materials in parts by mass: 80-120 parts of epoxy modified composite emulsion, 10-50 parts of organic acid resin, 50-300 parts of diluent and 4-15 parts of functional auxiliary agent.
As a preferable scheme, the raw materials of the epoxy modified composite emulsion comprise the following components in parts by mass: 150-300 parts of combined monomer, 0.1-2 parts of initiator, 0-5 parts of anionic organic salt, 1-5 parts of nonionic surfactant, 1-20 parts of modified resin, 1-5 parts of salifying agent and 200-400 parts of solvent.
As a preferable embodiment, the organic acid resin is at least one of a high-toughness aqueous acrylic resin and a high-toughness aqueous polyurethane.
As a preferable embodiment, the organic acid resin is a high-toughness aqueous acrylic resin.
As a preferable embodiment, the viscosity of the organic acid resin is 50 to 100mPa.s at 25 ℃.
As a preferred embodiment, the viscosity of the organic acid resin is 75mPa.s at 25 ℃.
In the application, the high-toughness water-based acrylic resin is effectively selected, so that the surface folding resistance of the coating is effectively improved, and further, when the viscosity of the coating is controlled, the corrosion resistance and the surface brightness of the coating can be effectively improved. The applicant speculates that: when the viscosity of the adopted high-toughness water-based acrylic resin is 75mPa.s and the temperature is 25 ℃, the proper viscosity can form easily flowing resin groups in a coating system, so that a uniform toughness system is formed in the whole system, when the water-based acrylic resin is cured to form a film, a monomer high-toughness resin film can be formed in a surface film, and the existence of the film can not only effectively enhance the folding resistance of the film through the toughness of the film, but also form a good reflection effect, and further has good brightness.
As a preferred scheme, the diluent is at least one of deionized water, organic alcohol, organic ketone and short-chain ester.
As a preferred embodiment, the diluent is deionized water.
As a preferable scheme, the functional auxiliary agent is at least one of a leveling agent, a wetting agent, a lubricant, an anti-dripping agent, an anti-ultraviolet absorbent, a flame retardant, an antifreezing agent, a waterproof agent and a preservative.
As a preferable scheme, the functional auxiliary agent is an antifoaming agent, a leveling agent and a preservative.
As a preferable scheme, the functional auxiliary agent is an antifoaming agent, and the mass ratio of the leveling agent to the preservative is 4-6:4-6:1-3.
As a preferred embodiment, the preservative is methylisothiazolinone.
As a preferred embodiment, the combination monomer is a mixture of an acrylic hard monomer, an acrylic soft monomer and an acid ester functional monomer.
As a preferred embodiment, the acrylic hard monomer is at least one of methyl methacrylate, dicyclopentyl acrylate, and styrene-acrylonitrile.
As a preferable scheme, the acrylic hard monomer is methyl methacrylate and dicyclopentyl acrylate, and the mass ratio is 150:1.
As a preferable embodiment, the acrylic soft monomer is at least one of butyl acrylate, ethyl acrylate, and lauryl methacrylate.
As a preferable scheme, the acrylic soft monomer is butyl acrylate and ethyl acrylate, and the mass ratio is 7:1.
In the application, the epoxy modified composite emulsion effectively improves various performances of the coating. The applicant speculates that: according to the preparation method, the monomer with the side chain containing alkane is introduced into the system through the addition of the epoxy modified composite emulsion, and meanwhile, the higher double bond density can be brought to the system under proper reaction conditions through the modification of the monomer with the double bond, so that the reaction density in the preparation process can be effectively enhanced.
As a preferable scheme, the acid ester functional monomer is at least one of methacrylic acid, acrylic acid-beta-hydroxyethyl ester, acrylic acid-beta-hydroxypropyl ester and glycidyl methacrylate.
As a preferable scheme, the acid ester functional monomer is acrylic acid.
As a preferred embodiment, the anionic organic salt is at least one of sulfonate and sulfate.
As a preferable scheme, the mass ratio of the epoxy modified composite emulsion to the organic acid resin is 9-11: 1 to 5.
As a preferable scheme, the mass ratio of the epoxy modified composite emulsion to the organic acid resin is 10:3.
furthermore, the epoxy modified composite emulsion and the organic acid resin can effectively improve the folding endurance capacity and the chemical corrosion penetration resistance by limiting the mass ratio of the epoxy modified composite emulsion to the organic acid resin. The applicant speculates that: in the application, when the mass ratio of the epoxy modified composite emulsion to the organic acid resin is 10:3, the monomer with alkane in the side chain and the double bond monomer can effectively form a connecting and winding effect with the long molecular chain of the organic resin, and half length of the branched chain is expanded as much as possible, so that the whole carbon chain of the system forms multi-helix and multi-complexity entanglement, and the movement and migration speed of electrons and active groups are limited.
As a preferable scheme, the preparation method of the epoxy modified composite emulsion comprises the following steps: (1) Mixing all monomers and other raw materials, and stirring and reacting for 3-4 hours at 55-75 ℃; (2) And adding the modified resin, continuing to react for 4-5 hours, and finally neutralizing and emulsifying to obtain the modified resin.
The second aspect of the invention provides a preparation method of the water-based folding-resistant highlight composite coating, which comprises the following steps: (1) weighing raw materials according to the dosage of each component; (2) Adding a diluent into a reaction kettle, and stirring for reaction for 4-12 hours; (3) Adding the epoxy modified composite emulsion and the organic acid resin into a reaction kettle, and uniformly stirring; (4) Adding the rest raw materials, stirring, and filtering.
The beneficial effects are that:
1. the composite coating prepared in the application has good adhesion and folding resistance, and can form good adhesion on the surface of the PET corona base film, so that the protection performance of various packaging materials is realized, the service life of the packaging materials is greatly prolonged, and the application is good.
2. According to the composite coating prepared in the application, the high-toughness water-based acrylic resin is effectively selected, so that the surface folding resistance of the coating is effectively improved, and further, when the viscosity of the coating is controlled, the corrosion resistance and the surface brightness of the coating can be effectively improved.
3. The composite coating prepared in the application effectively improves various properties of the coating by adopting the epoxy modified composite emulsion. The coating has good forehead adhesion and folding endurance, can meet the brightness requirement of packaging materials, and has wide applicability.
Detailed Description
Example 1
The first aspect of the embodiment 1 provides an aqueous folding-resistant high-brightness composite coating, which comprises the following raw materials in parts by mass:
in this example, the aqueous acrylic acid was Neocryl XK-12 model aqueous acrylic acid sold by Neocryl, neschmann, netherlands.
In this example, the aqueous defoamer was a TEGO Airex 902w defoamer product sold by Digao.
In this example, the leveling agent is TEGO Glide 100 leveling agent product sold by Digao.
The epoxy modified composite emulsion comprises the following raw materials in parts by mass:
| raw materials | Parts by mass |
| Methyl methacrylate (hard monomer) | 150 |
| BA (Soft monomer) | 70 |
| EA (Soft monomer) | 10 |
| Dicyclopentenyl acrylate (hard monomer) | 1 |
| Acrylic acid (acid ester functional monomer) | 0.5 |
| AEO (nonionic surfactant)) | 4.5 |
| Butenoic acid modified epoxy resin (modified resin) | 13 |
| Potassium persulfate (initiator) | 1 |
| Acetone (solvent) | 75 |
| Triethanolamine (salifying agent) | 2 |
| Water (solvent) | 300 |
The preparation method of the epoxy modified composite emulsion comprises the following steps: (1) Mixing all the monomers and other raw materials, and stirring at 60 ℃ for reaction for 3.5 hours; (2) And adding the modified resin, continuing to react for 4.5 hours, and finally neutralizing and emulsifying to obtain the modified resin.
The second aspect of the present embodiment provides a method for preparing the above aqueous folding-resistant highlight composite coating, which comprises the following steps: (1) weighing raw materials according to the dosage of each component; (2) adding a diluent into the reaction kettle, and stirring for reaction for 8 hours; (3) Adding the epoxy modified composite emulsion and the organic acid resin into a reaction kettle, and uniformly stirring; (4) Adding the rest raw materials, stirring, and filtering.
Example 2
The specific implementation of this example is the same as example 1, except that: the components are as follows:
| raw materials | Parts by mass |
| Epoxy modified composite emulsion | 100 |
| Aqueous acrylic acid | 30 |
| Deionized water | 168.8 |
| Aqueous defoamer | 0.4 |
| Leveling agent | 0.6 |
| Methyl isothiazolinone | 0.2 |
Example 3
The specific embodiment of this comparative example is the same as example 1, except that: the components are as follows:
evaluation of Performance
The coatings prepared in each example were subjected to the performance test of the following table, and the results are reported in table 1.
TABLE 1
It can be known from examples 1-3 and table 1 that the water-based folding-resistant high-brightness composite coating provided by the invention has good folding resistance, corrosion resistance and higher laser brightness, effectively improves the adhesion force between the coating and a PET corona base film, is suitable for popularization in the field of packaging materials, and has wide development prospect.
Claims (5)
1. A water-based folding-resistant highlight composite coating is characterized in that: the raw materials comprise the following components in parts by mass: 80-120 parts of epoxy modified composite emulsion, 10-50 parts of organic acid resin, 50-300 parts of diluent and 4-15 parts of functional auxiliary agent;
the raw materials of the epoxy modified composite emulsion comprise the following components in parts by mass: 150-300 parts of a combined monomer, 0.1-2 parts of an initiator, 0-5 parts of an anionic organic salt, 1-5 parts of a nonionic surfactant, 1-20 parts of a modified resin, 1-5 parts of a salifying agent and 200-400 parts of a solvent;
the combined monomer is a mixture of an acrylic hard monomer, an acrylic soft monomer and an acid ester functional monomer;
the organic acid resin is high-toughness water-based acrylic resin; the viscosity of the organic acid resin is 75mPa.s, and 25 ℃;
the acrylic hard monomer is methyl methacrylate and dicyclopentyl acrylate, and the mass ratio is 150:1;
the acrylic soft monomer is butyl acrylate and ethyl acrylate, and the mass ratio is 7:1;
the modified resin is butenoic acid modified epoxy resin;
the salifying agent is triethanolamine;
the acid ester functional monomer is at least one of methacrylic acid, acrylic acid-beta-hydroxyethyl ester, acrylic acid-beta-hydroxypropyl ester and glycidyl methacrylate;
the anionic organic salt is at least one of sulfonate and sulfate.
2. The aqueous fold-resistant high-brightness composite coating according to claim 1, characterized in that: the diluent is at least one of deionized water, organic alcohol, organic ketone and short-chain ester.
3. The aqueous fold-resistant high-brightness composite coating according to claim 1, characterized in that: the functional auxiliary agent is at least one of a leveling agent, a wetting agent, a lubricant, an anti-dripping agent, an anti-ultraviolet absorbent, a flame retardant, an antifreezing agent, a waterproof agent and a preservative.
4. The aqueous fold-resistant high-brightness composite coating according to claim 1, characterized in that: the mass ratio of the epoxy modified composite emulsion to the organic acid resin is 9-11: 1-5.
5. A method for preparing the aqueous folding-resistant highlight composite coating according to any one of claims 1 to 4, which is characterized in that: the method comprises the following steps: (1) weighing raw materials according to the dosage of each component; (2) adding a diluent into the reaction kettle, and stirring for reaction for 4-12 hours; (3) Adding the epoxy modified composite emulsion and the organic acid resin into a reaction kettle, and uniformly stirring; (4) Adding the rest raw materials, stirring, and filtering.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210927786.6A CN115477886B (en) | 2022-08-03 | 2022-08-03 | Water-based folding-resistant high-brightness composite coating and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210927786.6A CN115477886B (en) | 2022-08-03 | 2022-08-03 | Water-based folding-resistant high-brightness composite coating and preparation method thereof |
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| CN115477886B true CN115477886B (en) | 2023-05-23 |
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| US20100136072A1 (en) * | 2006-11-08 | 2010-06-03 | Massachusetts Institute Of Technology | Polymeric Coatings that Inactivate Viruses and Bacteria |
| CN108329813B (en) * | 2017-12-29 | 2020-09-08 | 上海维凯光电新材料有限公司 | Bending-resistant water-based transfer coating and preparation method thereof |
| CN109294377B (en) * | 2018-09-26 | 2020-12-29 | 上海乘鹰新材料有限公司 | Laser transfer coating with excellent flexibility |
| JP2021120337A (en) * | 2019-10-09 | 2021-08-19 | Dic株式会社 | Abrasion-resistant agent, coating agent, laminate, method for producing laminate, and method for coating substrate |
| CN112662247B (en) * | 2020-12-31 | 2022-02-18 | 常州市天盾涂料有限公司 | High-toughness water-based acrylic coating and preparation method thereof |
| CN114736580A (en) * | 2022-04-13 | 2022-07-12 | 滁州金桥德克新材料有限公司无锡分公司 | Water-based release adhesive and preparation method and application thereof |
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