CN111234686A - Self-crosslinking acrylic polyurethane dispersion stone-like paint and preparation method thereof - Google Patents
Self-crosslinking acrylic polyurethane dispersion stone-like paint and preparation method thereof Download PDFInfo
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- CN111234686A CN111234686A CN202010160777.XA CN202010160777A CN111234686A CN 111234686 A CN111234686 A CN 111234686A CN 202010160777 A CN202010160777 A CN 202010160777A CN 111234686 A CN111234686 A CN 111234686A
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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
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
- C09D5/1662—Synthetic film-forming substance
-
- 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
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1687—Use of special additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2312/00—Crosslinking
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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)
Abstract
The invention relates to self-crosslinking acrylic polyurethane dispersion real stone paint which comprises the following raw materials in parts by weight: 10-20 parts of water, 10-30 parts of self-crosslinking acrylic polyurethane dispersoid, 1-5 parts of cellulose, 1-2 parts of bentonite, 1-2 parts of bactericide, 0.1-1 part of film-forming assistant, 0.1-1 part of propylene glycol, 0.1-1 part of defoaming agent, 0.1-1 part of ultraviolet absorber and 50-80 parts of natural colored sand. The self-crosslinking acrylic polyurethane dispersoid is used in the stone-like paint, and the prepared polyurethane dispersoid has self-crosslinking property by introducing unsaturated carbon-carbon double bonds of unsaturated fatty acid, so that the crosslinking density of the aqueous polyurethane is improved; because the crosslinking density is higher, a layer of compact protective film is formed on the surface of the stone-like paint, thereby improving the weather resistance, water resistance, hardness, adhesive force and wear resistance of the stone-like paint, and greatly prolonging the service life and application range of the stone-like paint.
Description
Technical Field
The invention belongs to the field of building coatings, and particularly relates to self-crosslinking acrylic polyurethane dispersion stone-like paint and a preparation method thereof.
Technical Field
In recent years, with the continuous development of coating technology and the continuous expansion of building market, the application of building coatings is increasingly popularized and popularized, but most of the coatings mainly comprise coatings which only can be in a single color in one construction, such as common emulsion paint, elastic emulsion paint, texture coating and the like, and the exterior facade of public buildings and high-grade residential buildings requires a stone effect, and the common coatings are difficult to realize.
However, some real stone paint coatings turn white after raining every time, the coatings become loose, and after the raining stops, the coatings recover the original color after being dried by the sun. In fact, this is caused by the poor water resistance of the coating, absorbing moisture; in addition, some real stone paints are just sprayed on the wall surface to be bright and bright, and become yellow after several months, so that the weather resistance is poor, and the decoration performance of the real stone paints is greatly reduced; almost all real stone paint wall surfaces have poor stain resistance, and a large amount of rain marks and gray marks appear after three months; the invention adopts self-crosslinking acrylic polyurethane dispersoid as film forming substance and natural colored sand as coloring substance to prepare the natural stone-like paint product with high weather resistance, high stain resistance and high water resistance, which just meets the market demand.
Disclosure of Invention
In order to solve the defects in the prior art, the self-crosslinking acrylic polyurethane dispersion is applied to the natural stone-like paint to prepare a natural stone-like paint product with high weather resistance, high stain resistance and high water resistance.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
the self-crosslinking acrylic polyurethane dispersion real stone paint comprises the following raw materials in parts by weight:
further, the self-crosslinking acrylic polyurethane dispersion is formed by polymerizing unsaturated fatty acid and methacrylic acid or vinyl monomer under the action of an initiator.
Further, the cellulose is hydroxyethyl cellulose.
Further, the bentonite is modified lithium bentonite.
Further, the film-forming assistant is 2,2, 4-trimethyl-1, 3-pentanediol monoisobutyl ester.
Further, the bactericide is a kasong bactericide, and the defoaming agent is an organic silicon defoaming agent.
Further, the ultraviolet light absorber is salicylic acid methyl ester.
The invention also discloses a preparation method of the self-crosslinking acrylic polyurethane dispersion stone-like paint, which is characterized by comprising the following steps:
(1) weighing raw materials of water, self-crosslinking acrylic polyurethane dispersoid, cellulose, bentonite, bactericide, film-forming assistant, propylene glycol, defoamer, ultraviolet absorber and natural colored sand according to the weight part of the formula;
(2) adding water, cellulose and bentonite into a reaction kettle, and dispersing for 20 minutes by using a dispersion stirring paddle at a high-speed rotating speed of 1500r/min-1800r/min to disperse into slurry;
(3) reducing the rotating speed to 1000r/min-1200r/min, slowly adding the self-crosslinking acrylic polyurethane dispersoid, dispersing for 10 minutes, then adding the bactericide, the film-forming assistant, the propylene glycol, the defoaming agent and the ultraviolet absorber, and uniformly dispersing to prepare slurry;
(4) adding natural color sand into the slurry, and uniformly dispersing at a low speed of 500r/min-800 r/min.
Compared with the prior art, the invention has the beneficial effects that: the self-crosslinking acrylic polyurethane dispersoid is formed by polymerizing unsaturated fatty acid and methacrylic acid or vinyl monomer under the action of an initiator, is grafted at the chain end of acrylic resin, and improves the hardness, the glossiness and the crosslinking density after self-crosslinking by introducing the unsaturated fatty acid, and improves the hardness, the glossiness, the water resistance, the stain resistance, the weather resistance and the like of the surface of the stone-like paint to a great extent after introducing the self-crosslinking acrylic polyurethane dispersoid into the stone-like paint; the natural stone paint is used as a main stream product of the building coating, and if the self-crosslinking acrylic polyurethane dispersoid can be applied to the natural stone paint, the protective property and the decorative property of a building can be greatly improved.
The self-crosslinking acrylic polyurethane dispersoid has self-crosslinking property by introducing unsaturated carbon-carbon double bonds of unsaturated fatty acid in the action of the natural real stone paint, so that the prepared polyurethane dispersoid improves the crosslinking density of the aqueous polyurethane; because the crosslinking density is higher, a layer of compact protective film is formed on the surface of the stone-like paint, thereby improving the weather resistance, water resistance, hardness, adhesive force and wear resistance of the stone-like paint, and greatly prolonging the service life and application range of the stone-like paint.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification.
Example 1
The application of the self-crosslinking acrylic polyurethane dispersion in the real stone paint comprises the following raw materials in percentage by mass: water: 10 parts of (A); self-crosslinking acrylic polyurethane dispersion: 20 parts of (1); hydroxyethyl cellulose: 1 part; modified lithium bentonite: 1 part; carbazone bactericide CH 3: 1 part; 2,2, 4-trimethyl-1, 3-pentanediol monoisobutyl ester: 0.5 part; propylene glycol: 0.4 part; silicone defoamer NXZ: 0.2 part; salicylic acid methyl ester: 0.2 part; natural color sand: 66 parts.
A method for preparing self-crosslinking acrylic polyurethane dispersoid real stone paint uses a set of high-speed disperser as reaction equipment, which comprises a reaction kettle, a dispersion stirring paddle and a fixing device;
the preparation method comprises the following steps:
(1) weighing raw materials of water, self-crosslinking acrylic polyurethane dispersoid, hydroxyethyl cellulose, bentonite, Kathon bactericide CH3, 2, 4-trimethyl-1, 3-pentanediol monoisobutyl ester, propylene glycol, an organic silicon defoamer NXZ, salicylic acid monoester and natural colored sand according to the weight part of the formula;
(2) adding water, hydroxyethyl cellulose and modified lithium bentonite into a reaction kettle, and dispersing for 20 minutes by using a dispersion stirring paddle at a high-speed rotating speed of 1500r/min-1800r/min to disperse into slurry;
(3) reducing the rotating speed to 1000r/min-1200r/min, slowly adding the self-crosslinking acrylic polyurethane dispersoid, dispersing for 10 minutes, then adding the Kathon bactericide CH3, the film-forming assistant, the propylene glycol, the organic silicon defoamer NXZ and the salicylic acid monoester, and uniformly dispersing to prepare slurry;
(4) adding natural color sand into the slurry, and uniformly dispersing at a low speed of 500r/min-800 r/min.
Example 2
The application of the self-crosslinking acrylic polyurethane dispersion in the real stone paint comprises the following raw materials in percentage by mass: water: 20 parts of (1); self-crosslinking acrylic polyurethane dispersion: 30 parts of (1); hydroxyethyl cellulose: 5 parts of a mixture; bentonite: 2 parts of (1); carbazone bactericide CH 3: 2 parts of (1); 2,2, 4-trimethyl-1, 3-pentanediol monoisobutyl ester: 1 part; propylene glycol: 1 part; silicone defoamer NXZ: 1 part; salicylic acid methyl ester: 1 part; natural color sand: 80 parts of the raw materials.
A method for preparing self-crosslinking acrylic polyurethane dispersoid real stone paint uses a set of high-speed disperser as reaction equipment, which comprises a reaction kettle, a dispersion stirring paddle and a fixing device;
the preparation method comprises the following steps:
(1) weighing raw materials of water, self-crosslinking acrylic polyurethane dispersoid, hydroxyethyl cellulose, bentonite, Kathon bactericide CH3, 2, 4-trimethyl-1, 3-pentanediol monoisobutyl ester, propylene glycol, an organic silicon defoamer NXZ, salicylic acid monoester and natural colored sand according to the weight part of the formula;
(2) adding water, hydroxyethyl cellulose and modified lithium bentonite into a reaction kettle, and dispersing for 20 minutes by using a dispersion stirring paddle at a high-speed rotating speed of 1500r/min-1800r/min to disperse into slurry;
(3) reducing the rotating speed to 1000r/min-1200r/min, slowly adding the self-crosslinking acrylic polyurethane dispersoid, dispersing for 10 minutes, then adding the Kathon bactericide CH3, the film-forming assistant, the propylene glycol, the organic silicon defoamer NXZ and the salicylic acid monoester, and uniformly dispersing to prepare slurry;
(4) adding natural color sand into the slurry, and uniformly dispersing at a low speed of 500r/min-800 r/min.
Example 3
The application of the self-crosslinking acrylic polyurethane dispersion in the real stone paint comprises the following raw materials in percentage by mass: water: 15 parts of (1); self-crosslinking acrylic polyurethane dispersion: 10 parts of (A); hydroxyethyl cellulose: 3 parts of a mixture; modified lithium bentonite: 1.5 parts; carbazone bactericide CH 3: 1.8 parts; 2,2, 4-trimethyl-1, 3-pentanediol monoisobutyl ester: 0.1 part; propylene glycol: 0.1 part; silicone defoamer NXZ: 0.1 part; salicylic acid methyl ester: 0.1 part; natural color sand: 50 parts of the raw materials.
A method for preparing self-crosslinking acrylic polyurethane dispersoid real stone paint uses a set of high-speed disperser as reaction equipment, which comprises a reaction kettle, a dispersion stirring paddle and a fixing device;
the preparation method comprises the following steps:
(1) weighing raw materials of water, self-crosslinking acrylic polyurethane dispersoid, hydroxyethyl cellulose, bentonite, Kathon bactericide CH3, 2, 4-trimethyl-1, 3-pentanediol monoisobutyl ester, propylene glycol, an organic silicon defoamer NXZ, salicylic acid monoester and natural colored sand according to the weight part of the formula;
(2) adding water, hydroxyethyl cellulose and modified lithium bentonite into a reaction kettle, and dispersing for 20 minutes by using a dispersion stirring paddle at a high-speed rotating speed of 1500r/min-1800r/min to disperse into slurry;
(3) reducing the rotating speed to 1000r/min-1200r/min, slowly adding the self-crosslinking acrylic polyurethane dispersoid, dispersing for 10 minutes, then adding the Kathon bactericides CH3, 2, 4-trimethyl-1, 3-pentanediol monoisobutyl ester, propylene glycol, the organosilicon defoamer NXZ and the salicylic acid monoester, and uniformly dispersing to prepare slurry;
(4) adding natural color sand into the slurry, and uniformly dispersing at a low speed of 500r/min-800 r/min.
The self-crosslinking acrylic polyurethane dispersion water-based multicolor paint obtained by the technical scheme is subjected to corresponding performance detection as shown in the following table:
as can be seen from the comparison of the above table, the stone-like paint of the formula is far higher than the standard indexes in the aspects of alkali resistance, water resistance, acid rain resistance, moisture-proof cold and hot cycle resistance, stain resistance, artificial weather aging resistance and the like, so that the service life of the stone-like paint is greatly prolonged, and the stone-like paint is more widely applied.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The self-crosslinking acrylic polyurethane dispersion real stone paint is characterized by comprising the following raw materials in parts by weight:
2. the self-crosslinking acrylic polyurethane dispersion stone-like paint as claimed in claim 1, wherein: the self-crosslinking acrylic polyurethane dispersoid is formed by polymerizing unsaturated fatty acid and methacrylic acid or vinyl monomers under the action of an initiator.
3. The self-crosslinking acrylic polyurethane dispersion stone-like paint as claimed in claim 2, wherein: the cellulose is hydroxyethyl cellulose.
4. The self-crosslinking acrylic polyurethane dispersion stone-like paint as claimed in claim 2, wherein: the bentonite is modified lithium bentonite.
5. The self-crosslinking acrylic polyurethane dispersion stone-like paint as claimed in claim 2, wherein: the film-forming assistant is 2,2, 4-trimethyl-1, 3-pentanediol monoisobutyl ester.
6. The self-crosslinking acrylic polyurethane dispersion stone-like paint as claimed in claim 2, wherein: the bactericide is a kasong bactericide, and the defoaming agent is an organic silicon defoaming agent.
7. The self-crosslinking acrylic polyurethane dispersion stone-like paint as claimed in claim 2, wherein: the ultraviolet light absorber is salicylic acid monoester.
8. The method for preparing the self-crosslinking acrylic polyurethane dispersion real stone paint as claimed in any one of claims 1 to 7, comprising the steps of:
(1) weighing raw materials of water, self-crosslinking acrylic polyurethane dispersoid, cellulose, bentonite, bactericide, film-forming assistant, propylene glycol, defoamer, ultraviolet absorber and natural colored sand according to the weight part of the formula;
(2) adding water, cellulose and bentonite into a reaction kettle, and dispersing for 20 minutes by using a dispersion stirring paddle at a high-speed rotating speed of 1500r/min-1800r/min to disperse into slurry;
(3) reducing the rotating speed to 1000r/min-1200r/min, slowly adding the self-crosslinking acrylic polyurethane dispersoid, dispersing for 10 minutes, then adding the bactericide, the film-forming assistant, the propylene glycol, the defoaming agent and the ultraviolet absorber, and uniformly dispersing to prepare slurry;
(4) adding natural color sand into the slurry, and uniformly dispersing at a low speed of 500r/min-800 r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010160777.XA CN111234686A (en) | 2020-03-10 | 2020-03-10 | Self-crosslinking acrylic polyurethane dispersion stone-like paint and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010160777.XA CN111234686A (en) | 2020-03-10 | 2020-03-10 | Self-crosslinking acrylic polyurethane dispersion stone-like paint and preparation method thereof |
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| CN111234686A true CN111234686A (en) | 2020-06-05 |
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| CN202010160777.XA Pending CN111234686A (en) | 2020-03-10 | 2020-03-10 | Self-crosslinking acrylic polyurethane dispersion stone-like paint and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112608626A (en) * | 2020-12-01 | 2021-04-06 | 安徽科创美涂料科技股份有限公司 | Waterborne polyurethane-polyacrylic acid-based self-repairing real stone paint and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103788328A (en) * | 2013-09-02 | 2014-05-14 | 上海涂料有限公司技术中心 | Oxidized self-cross-linked waterborne acrylic polyurethane dispersion and preparation method thereof |
| CN104609772A (en) * | 2014-12-26 | 2015-05-13 | 三棵树涂料股份有限公司 | Really stone paint and preparation method thereof |
| CN109321124A (en) * | 2018-09-06 | 2019-02-12 | 江苏久诺建材科技股份有限公司 | A kind of flexible real stone paint |
-
2020
- 2020-03-10 CN CN202010160777.XA patent/CN111234686A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103788328A (en) * | 2013-09-02 | 2014-05-14 | 上海涂料有限公司技术中心 | Oxidized self-cross-linked waterborne acrylic polyurethane dispersion and preparation method thereof |
| CN104609772A (en) * | 2014-12-26 | 2015-05-13 | 三棵树涂料股份有限公司 | Really stone paint and preparation method thereof |
| CN109321124A (en) * | 2018-09-06 | 2019-02-12 | 江苏久诺建材科技股份有限公司 | A kind of flexible real stone paint |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112608626A (en) * | 2020-12-01 | 2021-04-06 | 安徽科创美涂料科技股份有限公司 | Waterborne polyurethane-polyacrylic acid-based self-repairing real stone paint and preparation method thereof |
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