CN111440487A - Impact-resistant strong-adhesion powder coating and preparation method thereof - Google Patents
Impact-resistant strong-adhesion powder coating and preparation method thereof Download PDFInfo
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- CN111440487A CN111440487A CN202010481882.3A CN202010481882A CN111440487A CN 111440487 A CN111440487 A CN 111440487A CN 202010481882 A CN202010481882 A CN 202010481882A CN 111440487 A CN111440487 A CN 111440487A
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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
- C09D125/00—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 an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
- C09D125/02—Homopolymers or copolymers of hydrocarbons
- C09D125/04—Homopolymers or copolymers of styrene
- C09D125/08—Copolymers of styrene
- C09D125/12—Copolymers of styrene with unsaturated nitriles
-
- 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- 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
- C09D5/03—Powdery paints
- C09D5/033—Powdery paints characterised by the additives
-
- 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
-
- 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
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention relates to the technical field of powder coatings, and discloses an impact-resistant strong-adhesion powder coating and a preparation method thereof. The impact-resistant strong-adhesion powder coating comprises, by weight, 2-20 parts of modified epoxy resin, 12-15 parts of modified polyester resin, 13-15 parts of polycarbonate resin, 15-18 parts of styrene-acrylonitrile resin, 2-5 parts of a curing agent, 3-5 parts of a leveling agent and 35-40 parts of a pigment, wherein the total weight of the impact-resistant strong-adhesion powder coating is 100 parts. According to the invention, after the specific resin combination of the modified epoxy resin, the modified polyester resin, the polycarbonate resin and the styrene-acrylonitrile resin is combined with the curing agent, the leveling agent and the pigment according to a specific proportion, the obtained powder coating has good flexibility and high hardness, and has super impact resistance and excellent adhesive force.
Description
Technical Field
The invention relates to the technical field of powder coatings, in particular to an impact-resistant strong-adhesion powder coating and a preparation method thereof.
Background
With the improvement of living standard, people have higher and higher requirements on home decoration. When the traditional paint is used for painting the wall surface, organic solvent volatile matters such as formaldehyde and the like can be generated, the indoor environment can be polluted, and the human health is seriously harmed. The powder coating is in a completely different form from general coating, and it exists in a state of fine powder. Since no solvent is used, it is called a powder coating. The powder coating has the characteristics of harmlessness, high efficiency, resource saving and environmental protection. The existing powder coating has weak impact resistance and adhesive force, and the phenomenon of serious powder falling is easy to occur after the coating is used for painting the wall surface.
Disclosure of Invention
The invention aims to overcome the problems of weak impact resistance and adhesive force of the coating in the prior art, and provides an impact-resistant strong-adhesion powder coating and a preparation method thereof.
In order to achieve the above object, one aspect of the present invention provides an impact-resistant powder coating material, which contains 2 to 20 parts by weight of a modified epoxy resin, 12 to 15 parts by weight of a modified polyester resin, 13 to 15 parts by weight of a polycarbonate resin, 15 to 18 parts by weight of a styrene-acrylonitrile resin, 2 to 5 parts by weight of a curing agent, 3 to 5 parts by weight of a leveling agent, and 35 to 40 parts by weight of a pigment, based on 100 parts by weight of the total weight of the impact-resistant powder coating material.
Preferably, the modified epoxy resin is a glycidyl ester type epoxy resin and/or a glycidyl amine type epoxy resin.
Preferably, the modified polyester resin is an acrylic modified polyester resin.
Preferably, the polycarbonate resin is an aliphatic polycarbonate resin.
Preferably, the curing agent is at least one of diethylaminopropylamine, diethylenetriamine, diaminodiphenylmethane, m-aminomethane, or m-xylylenediamine.
Preferably, the leveling agent is an organic silicon-based leveling agent or a fluorocarbon-based leveling agent.
Preferably, the pigment is a mixture of chromium green, molybdenum chromium red and carbon black.
Preferably, the weight ratio of the chromium green to the molybdenum-chromium red to the carbon black is 1:0.5-1: 1-3.
In another aspect of the present invention, there is provided a method for preparing the impact-resistant strongly-adhering powder coating, which comprises the following steps:
(1) melting, mixing and grinding the modified epoxy resin, the modified polyester resin and the curing agent;
(2) adding polycarbonate resin, styrene-acrylonitrile resin and a flatting agent into the product obtained in the step (1), and melting and mixing;
(3) adding a pigment into the product obtained in the step (2), stirring and grinding.
Preferably, step (1) and step (3) further comprise passing the milled product through a 50-80 mesh screen.
According to the invention, after the specific resin combination of the modified epoxy resin, the modified polyester resin, the polycarbonate resin and the styrene-acrylonitrile resin is combined with the curing agent, the leveling agent and the pigment according to a specific proportion, the obtained powder coating has good flexibility and high hardness, and has super impact resistance and excellent adhesive force.
Detailed Description
The following describes in detail specific embodiments of the present invention. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
The endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values. For ranges of values, between the endpoints of each of the ranges and the individual points, and between the individual points may be combined with each other to give one or more new ranges of values, and these ranges of values should be considered as specifically disclosed herein.
The impact-resistant strong-adhesion powder coating comprises, by weight, 2-20 parts of modified epoxy resin, 12-15 parts of modified polyester resin, 13-15 parts of polycarbonate resin, 15-18 parts of styrene-acrylonitrile resin, 2-5 parts of a curing agent, 3-5 parts of a leveling agent and 35-40 parts of a pigment, wherein the total weight of the impact-resistant strong-adhesion powder coating is 100 parts.
In a preferred embodiment, the impact-resistant high-adhesion powder coating comprises 10 parts by weight of a modified epoxy resin, 15 parts by weight of a modified polyester resin, 13 parts by weight of a polycarbonate resin, 17 parts by weight of a styrene-acrylonitrile resin, 4 parts by weight of a curing agent, 4 parts by weight of a leveling agent, and 37 parts by weight of a pigment.
In the impact-resistant high-adhesion powder coating of the present invention, the modified epoxy resin, the modified polyester resin and the polycarbonate resin may be conventionally selected in the art. In order to enhance the impact resistance and adhesion of the coating, the modified epoxy resin is preferably glycidyl ester type epoxy resin and/or glycidyl amine type epoxy resin; the modified polyester resin is acrylic acid modified polyester resin; the polycarbonate resin is aliphatic polycarbonate resin.
In the impact-resistant high-adhesion powder coating of the present invention, the curing agent may be selected conventionally in the art. In particular embodiments, the curing agent may be at least one of diethylaminopropylamine, diethylenetriamine, diaminodiphenylmethane, meta-aminomethane, or meta-xylylenediamine. In a preferred embodiment, the curing agent is diethylenetriamine or diethylaminopropylamine.
In the impact-resistant and strong-adhesion powder coating, the leveling agent can be selected conventionally in the field, and preferably, the leveling agent is an organic silicon leveling agent or a fluorocarbon leveling agent.
In one embodiment, the pigment is a mixture of chromium green, molybdenum chromium red and carbon black. In order to improve the impact resistance and the adhesive force of the prepared coating, in the invention, the weight ratio of the chromium green to the molybdenum-chromium red to the carbon black is 1:0.5-1: 1-3; preferably, the weight ratio of the chromium green to the molybdenum-chromium red to the carbon black is 1:0.6-1: 1.2-2.8; more preferably, the weight ratio of the chromium green to the molybdenum chromium red to the carbon black is 1:0.6-0.8: 1.5-2.5.
In another aspect of the present invention, there is provided a method for preparing the impact-resistant strongly-adhering powder coating, which comprises the following steps:
(1) melting, mixing and grinding the modified epoxy resin, the modified polyester resin and the curing agent;
(2) adding polycarbonate resin, styrene-acrylonitrile resin and a flatting agent into the product obtained in the step (1), and melting and mixing;
(3) adding a pigment into the product obtained in the step (2), stirring and grinding.
In order to improve the impact resistance and the adhesive force of the powder coating, the step (1) and the step (3) also comprise the step of sieving a ground product by a sieve with 50-80 meshes; specifically, for example, the number of dots may be any value in a range of 50, 60, 70, 80, and any two of these dots; preferably, steps (1) and (3) further comprise passing the milled product through a 65 mesh screen.
The present invention will be described in detail by way of examples, but the scope of the present invention is not limited thereto.
Example 1
(1) Melting, mixing and grinding 10 parts by weight of glycidyl ester type epoxy resin, 15 parts by weight of acrylic acid modified polyester resin and 4 parts by weight of diethylenetriamine, and screening by a 65-mesh screen;
(2) adding 13 parts by weight of aliphatic polycarbonate resin, 17 parts by weight of styrene-acrylonitrile resin and 4 parts by weight of organic silicon flatting agent into the product obtained in the step (1), and melting and mixing;
(3) and (3) adding 37 parts by weight of pigment (the weight ratio of chromium green to molybdenum chromium red to carbon black is 1:0.8:2) into the product obtained in the step (2), stirring, grinding, and screening by using a 65-mesh screen to obtain a coating A1.
Example 2
(1) 2 parts by weight of glycidylamine epoxy resin, 15 parts by weight of acrylic acid modified polyester resin and 5 parts by weight of diethylaminopropylamine are melt-mixed, ground and sieved by a 50-mesh screen;
(2) adding 15 parts by weight of aliphatic polycarbonate resin, 18 parts by weight of styrene-acrylonitrile resin and 5 parts by weight of fluorocarbon leveling agent into the product obtained in the step (1), and melting and mixing;
(3) adding 40 parts by weight of pigment (the weight ratio of chromium green to molybdenum chromium red to carbon black is 1:0.5:2.5) into the product obtained in the step (2), stirring, grinding, and sieving by a 50-mesh sieve to obtain a coating A2.
Example 3
(1) Melting, mixing and grinding 20 parts by weight of glycidylamine epoxy resin, 12 parts by weight of acrylic acid modified polyester resin and 2 parts by weight of diaminodiphenylmethane, and sieving the mixture by using a 80-mesh sieve;
(2) adding 13 parts by weight of aliphatic polycarbonate resin, 15 parts by weight of styrene-acrylonitrile resin and 3 parts by weight of organic silicon flatting agent into the product obtained in the step (1), and melting and mixing;
(3) and (3) adding 35 parts by weight of pigment (the weight ratio of chromium green to molybdenum chromium red to carbon black is 1:1:3) into the product obtained in the step (2), stirring, grinding, and sieving by using an 80-mesh sieve to obtain a coating A3.
Example 4
Conducted in accordance with the procedure of example 1, except that, in step (1), 5 parts by weight of a glycidyl ester type epoxy resin and 5 parts by weight of a glycidyl amine type epoxy resin were added, to obtain coating A4.
Example 5
The procedure of example 1 was followed, except that in step (1), m-aminomethane was added as the curing agent, to obtain dope A5.
Example 6
The procedure of example 1 was followed, except that in step (3), the weight ratio of chromium green, molybdenum chromium red and carbon black was 1:0.6:1.5, to obtain coating A6.
Comparative example 1
The procedure of example 1 was carried out, except that in step (1), 25 parts by weight of an acrylic-modified polyester resin was added without adding a glycidyl ester type epoxy resin, to obtain coating B1.
Comparative example 2
Conducted in accordance with the procedure of example 1, except that, in the step (1), 25 parts by weight of a glycidyl ester type epoxy resin was added without adding the acrylic modified polyester resin, to obtain coating B2.
Comparative example 3
The procedure of example 1 was followed, except that in step (1), diethylenetriamine was not added, and in step (2), 8 parts by weight of a silicone-based leveling agent was added, to obtain coating material B3.
Comparative example 4
The procedure of example 1 was followed, except that, in step (2), no aliphatic polycarbonate resin was added, and 30 parts by weight of styrene-acrylonitrile resin was added, to obtain coating B4.
Comparative example 5
The procedure of example 1 was repeated, except that 30 parts by weight of an aliphatic polycarbonate resin was added in step (2) without adding the styrene-acrylonitrile resin, to obtain paint B5.
Comparative example 6
The procedure of example 1 was followed, except that in the step (2), the silicone-based leveling agent was not added, and in the step (1), 8 parts by weight of diethylenetriamine was added, to obtain dope B6.
Comparative example 7
The procedure of example 1 was repeated, except that, in the step (3), no pigment was added, and in the step (2), 50 parts by weight of an aliphatic polycarbonate resin was added, to obtain coating B7.
Comparative example 8
The procedure of example 1 was followed, except that in step (3), the weight ratio of chromium green, molybdenum chromium red and carbon black was 1:1.1:0.8, to obtain dope B8.
Test example
The method comprises the steps of selecting 140 bricks with the same type and specification of 20cm x 20cm x 20cm produced in the same batch, evenly dividing 10 bricks into 14 groups, wherein 1-6 groups are respectively tested by adopting coatings A1-A6, and 7-14 groups are tested by adopting coatings B1-B8, grinding five outer surfaces with the same surface area of each brick until the surface is flat and smooth, uniformly coating 100m L of the same coating on the five surfaces of each brick for testing, attaching one surface without a sample to an operating platform, forming a uniform coating obtained by solidifying the corresponding coatings on the five surfaces of the corresponding brick after the five surfaces are completely dried, nailing the same type of nail on each brick by using the same acting force, taking out the nail after the nail is nailed into 2cm, observing the hole condition, recording and analyzing the surface and the hole condition of the obtained by testing are shown in Table 1.
TABLE 1
As can be seen from the results in Table 1, the coating of the present invention is smooth, impact resistant and has strong adhesion.
The preferred embodiments of the present invention have been described above in detail, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications can be made to the technical solution of the invention, including combinations of various technical features in any other suitable way, and these simple modifications and combinations should also be regarded as the disclosure of the invention, and all fall within the scope of the invention.
Claims (10)
1. The impact-resistant high-adhesion powder coating is characterized by comprising, by weight, 2-20 parts of modified epoxy resin, 12-15 parts of modified polyester resin, 13-15 parts of polycarbonate resin, 15-18 parts of styrene-acrylonitrile resin, 2-5 parts of a curing agent, 3-5 parts of a leveling agent and 35-40 parts of a pigment, wherein the total weight of the impact-resistant high-adhesion powder coating is 100 parts.
2. The impact-resistant high-adhesion powder coating according to claim 1, wherein the modified epoxy resin is a glycidyl ester type epoxy resin and/or a glycidyl amine type epoxy resin.
3. The impact-resistant high-adhesion powder coating according to claim 1, wherein the modified polyester resin is an acrylic modified polyester resin.
4. The impact-resistant high-adhesion powder coating material according to claim 1, wherein the polycarbonate resin is an aliphatic polycarbonate resin.
5. The impact-resistant high-adhesion powder coating according to claim 1, wherein the curing agent is at least one of diethylaminopropylamine, diethylenetriamine, diaminodiphenylmethane, meta-aminomethane, or meta-xylylenediamine.
6. The impact-resistant high-adhesion powder coating as claimed in claim 1, wherein the leveling agent is an organic silicon leveling agent or a fluorocarbon leveling agent.
7. The impact resistant, high adhesion powder coating of claim 1, wherein the pigment is a mixture of chromium green, molybdenum chromium red and carbon black.
8. The impact-resistant high-adhesion powder coating as claimed in claim 7, wherein the weight ratio of the chromium green to the molybdenum-chromium red to the carbon black is 1:0.5-1: 1-3.
9. The method for preparing an impact-resistant high-adhesion powder coating according to any one of claims 1 to 8, comprising the steps of:
(1) melting, mixing and grinding the modified epoxy resin, the modified polyester resin and the curing agent;
(2) adding polycarbonate resin, styrene-acrylonitrile resin and a flatting agent into the product obtained in the step (1), and melting and mixing;
(3) adding a pigment into the product obtained in the step (2), stirring and grinding.
10. The impact resistant high adhesion powder coating of claim 9, wherein steps (1) and (3) further comprise passing the milled product through a 50-80 mesh screen.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010481882.3A CN111440487A (en) | 2020-05-28 | 2020-05-28 | Impact-resistant strong-adhesion powder coating and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010481882.3A CN111440487A (en) | 2020-05-28 | 2020-05-28 | Impact-resistant strong-adhesion powder coating and preparation method thereof |
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| CN111440487A true CN111440487A (en) | 2020-07-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112226146A (en) * | 2020-09-30 | 2021-01-15 | 中山市创渝中涂料科技有限公司 | Production and processing technology of resin powder coating |
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| CN1232844A (en) * | 1998-03-26 | 1999-10-27 | 武田药品工业株式会社 | Powder coating composition |
| US20040087736A1 (en) * | 2002-11-04 | 2004-05-06 | Bin Wu | Powder coating compositions containing anhydride end-capped crystalline polyesters |
| CN104861840A (en) * | 2015-06-05 | 2015-08-26 | 霸州市金昌环保材料有限公司 | Thin spray powder coating and preparation method thereof |
| CN106752765A (en) * | 2016-12-07 | 2017-05-31 | 立邦涂料（天津）有限公司 | A kind of toughening modifying low-temperature setting low-luster powdery paints, Preparation method and use |
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2020
- 2020-05-28 CN CN202010481882.3A patent/CN111440487A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1232844A (en) * | 1998-03-26 | 1999-10-27 | 武田药品工业株式会社 | Powder coating composition |
| US20040087736A1 (en) * | 2002-11-04 | 2004-05-06 | Bin Wu | Powder coating compositions containing anhydride end-capped crystalline polyesters |
| CN104861840A (en) * | 2015-06-05 | 2015-08-26 | 霸州市金昌环保材料有限公司 | Thin spray powder coating and preparation method thereof |
| CN106752765A (en) * | 2016-12-07 | 2017-05-31 | 立邦涂料（天津）有限公司 | A kind of toughening modifying low-temperature setting low-luster powdery paints, Preparation method and use |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112226146A (en) * | 2020-09-30 | 2021-01-15 | 中山市创渝中涂料科技有限公司 | Production and processing technology of resin powder coating |
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Application publication date: 20200724 |