CN111849313A - High-adhesion powder coating and preparation method and application method thereof - Google Patents
High-adhesion powder coating and preparation method and application method thereof Download PDFInfo
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- CN111849313A CN111849313A CN202010771617.9A CN202010771617A CN111849313A CN 111849313 A CN111849313 A CN 111849313A CN 202010771617 A CN202010771617 A CN 202010771617A CN 111849313 A CN111849313 A CN 111849313A
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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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
- B05D1/04—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
- B05D1/06—Applying particulate materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- 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
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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
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0806—Silver
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Plant Pathology (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a high-adhesion powder coating, a preparation method and an application method thereof, wherein the high-adhesion powder coating comprises the following raw materials in parts by weight: 35-50 parts of polyester resin, 25-38 parts of alicyclic epoxy resin, 2-6 parts of triglycidyl isocyanurate, 0.3-0.8 part of nano silver, 1.2-1.8 parts of brightener, 0.8-1.5 parts of flatting agent and 0.4-1 part of defoaming agent. After the powder coating is applied to a plate and cured to form a coating, the formed coating has strong surface coating adhesion, is not easy to fall off, and has better antibacterial performance and excellent performances in the aspects of impact strength and gloss.
Description
Technical Field
The invention relates to the technical field of powder coatings, in particular to a high-adhesion powder coating and a preparation method and an application method thereof.
Background
Powder coatings represent a rapidly growing area in the overall coating technology. Because the VOC emission is almost zero, the rapid development of the VOC is driven by the environmental protection requirement. The requirements of global and Chinese environmental protection laws and regulations are more and more strict, and the development of the environmental protection powder coating industry is effectively promoted.
Applying the powder coating on the device to form a coating; since implements are generally used in specific fields, for example: for sofas, desks and various electrical appliances, aiming at various fields, the powder coating often shows insufficient adhesive force, the condition that the coating and the attached surface are easy to fall off is easy to occur, the attractiveness of the appliances is influenced, a large amount of bacteria are bred, and great potential safety and health hazards are caused to human bodies.
Disclosure of Invention
In view of the above, the invention provides a high-adhesion powder coating, and a preparation method and an application method thereof.
A high-adhesion powder coating comprises the following raw materials in parts by weight:
preferably, the raw materials comprise the following components in parts by weight:
preferably, the polyester resin has an acid value of 26 to 29mgKOH/g and a viscosity of 68 to 72p/200 ℃.
Preferably, the alicyclic epoxy resin has a number average molecular weight of 5000-.
Preferably, the nano silver is 20-30 nm.
Preferably, the brightener is an acrylate copolymer.
Preferably, the leveling agent is one of end group modified organic silicon, alkyl modified organic siloxane and polyether polyester modified organic siloxane.
Preferably, the defoaming agent is one of a higher alcohol fatty acid ester complex, polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropylene amine ether, polyoxypropylene glycerol ether, polyoxypropylene polyoxyethylene glycerol ether and polydimethylsiloxane.
A preparation method of high-adhesion powder coating comprises the following steps:
adding polyester resin, alicyclic epoxy resin, triglycidyl isocyanurate, nano-silver, a brightening agent, a flatting agent and a defoaming agent into a high-speed mixer, mixing at the mixing speed of 500-800r/min for 15-25min to obtain a mixed material;
adding the mixed material into a double-screw extruder, wherein the temperature of an extruder I area is 105-115 ℃, the temperature of an extruder II area is 108-112 ℃, the temperature of a machine head is 110-115 ℃, and melting, extruding and pressing into sheet materials;
the sheet material is crushed into 400 meshes of 300-.
A method for applying high-adhesion powder coating comprises the following steps:
adding the powder coating into an electrostatic spray gun, spraying the powder coating on the surface-treated plate through the electrostatic spray gun, and fully curing at the temperature of 200 ℃/10-15min by 180 DEG to obtain the powder coating.
The invention provides a high-adhesion powder coating, and a preparation method and an application method thereof.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
A high-adhesion powder coating comprises the following raw materials in parts by weight:
wherein the acid value of the polyester resin is 26-29mgKOH/g, and the viscosity is 68-72p/200 ℃; the number average molecular weight of the alicyclic epoxy resin is 5000-; the nano silver is 20-30 nm; the brightener is acrylate copolymer. The leveling agent is one of end group modified organic silicon, alkyl modified organic siloxane and polyether polyester modified organic siloxane; the defoaming agent is one of high-alcohol fatty acid ester compound, polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropylene amine ether, polyoxypropylene glycerol ether, polyoxypropylene polyoxyethylene glycerol ether and polydimethylsiloxane.
A preparation method of high-adhesion powder coating comprises the following steps:
adding polyester resin, alicyclic epoxy resin, triglycidyl isocyanurate, nano-silver, a brightening agent, a flatting agent and a defoaming agent into a high-speed mixer, mixing at the mixing speed of 500-800r/min for 15-25min to obtain a mixed material;
adding the mixed material into a double-screw extruder, wherein the temperature of an extruder I area is 105-115 ℃, the temperature of an extruder II area is 108-112 ℃, the temperature of a machine head is 110-115 ℃, and melting, extruding and pressing into sheet materials;
the sheet material is crushed into 400 meshes of 300-.
A method for applying high-adhesion powder coating comprises the following steps:
adding the powder coating into an electrostatic spray gun, spraying the powder coating on the surface-treated plate through the electrostatic spray gun, and fully curing at the temperature of 200 ℃/10-15min by 180 DEG to obtain the powder coating.
Detailed description of the preferred embodiment 1
A high-adhesion powder coating comprises the following raw materials in parts by weight:
wherein the acid value of the polyester resin is 26mgKOH/g, and the viscosity is 72p/200 ℃; the number average molecular weight of the alicyclic epoxy resin is 5000-; the nano silver is 20 nm; the brightener is acrylate copolymer. The leveling agent is end group modified organic silicon; the defoaming agent is a higher alcohol fatty acid ester compound.
A preparation method of high-adhesion powder coating comprises the following steps:
adding polyester resin, alicyclic epoxy resin, triglycidyl isocyanurate, nano-silver, a brightening agent, a flatting agent and a defoaming agent into a high-speed mixer, mixing at the mixing speed of 500r/min for 25min to obtain a mixed material;
adding the mixed material into a double-screw extruder, wherein the temperature of an extruder I area is 105-;
and crushing the sheet materials into 300 meshes to obtain the powder coating.
A method for applying high-adhesion powder coating comprises the following steps:
adding the powder coating into an electrostatic spray gun, spraying the powder coating on the surface-treated plate through the electrostatic spray gun, and fully curing at 180 ℃/15min to obtain the powder coating.
Specific example 2
A high-adhesion powder coating comprises the following raw materials in parts by weight:
wherein the acid value of the polyester resin is 27mgKOH/g, and the viscosity is 69p/200 ℃; the number average molecular weight of the alicyclic epoxy resin is 6000-; the nano silver is 25 nm; the brightener is acrylate copolymer; the leveling agent is polyether polyester modified organic siloxane; the defoaming agent is polyoxyethylene polyoxypropylene ether.
A preparation method of high-adhesion powder coating comprises the following steps:
adding polyester resin, alicyclic epoxy resin, triglycidyl isocyanurate, nano-silver, a brightening agent, a flatting agent and a defoaming agent into a high-speed mixer, mixing at the mixing speed of 600r/min for 18min to obtain a mixed material;
adding the mixed material into a double-screw extruder, wherein the temperature of an extruder I area is 106-112 ℃, the temperature of an extruder II area is 110-112 ℃, the temperature of a machine head is 113 ℃, and melting, extruding and pressing the mixed material into sheet materials;
and crushing the sheet materials into 320 meshes to obtain the powder coating.
A method for applying high-adhesion powder coating comprises the following steps:
adding the powder coating into an electrostatic spray gun, spraying the powder coating on the surface-treated plate through the electrostatic spray gun, and fully curing at 195 ℃/12min to obtain the powder coating.
Specific example 3
A high-adhesion powder coating comprises the following raw materials in parts by weight:
wherein the acid value of the polyester resin is 29mgKOH/g, and the viscosity is 68p/200 ℃; the number average molecular weight of the alicyclic epoxy resin is 6000-9000; the nano silver is 30 nm; the brightener is acrylate copolymer; the flatting agent is alkyl modified organic siloxane; the defoaming agent is polyoxyethylene polyoxypropylene pentaerythritol ether.
A preparation method of high-adhesion powder coating comprises the following steps:
adding polyester resin, alicyclic epoxy resin, triglycidyl isocyanurate, nano-silver, a brightening agent, a flatting agent and a defoaming agent into a high-speed mixer, mixing at the mixing speed of 800r/min for 15min to obtain a mixed material;
adding the mixed material into a double-screw extruder, wherein the temperature of an extruder I area is 108-115 ℃, the temperature of an extruder II area is 108-110 ℃, the temperature of a machine head is 110 ℃, and melting, extruding and pressing the mixed material into sheet materials;
and crushing the sheet materials into 400 meshes to obtain the powder coating.
A method for applying high-adhesion powder coating comprises the following steps:
adding the powder coating into an electrostatic spray gun, spraying the powder coating on the surface-treated plate through the electrostatic spray gun, and fully curing at 200 ℃/10min to obtain the powder coating.
Specific example 4
A high-adhesion powder coating comprises the following raw materials in parts by weight:
wherein the acid value of the polyester resin is 28mgKOH/g, and the viscosity is 71p/200 ℃; the number average molecular weight of the alicyclic epoxy resin is 5500-8500; the nano silver is 28 nm; the brightener is acrylate copolymer; the flatting agent is alkyl modified organic siloxane; the defoaming agent is polyoxypropylene glycerol ether.
A preparation method of high-adhesion powder coating comprises the following steps:
adding polyester resin, alicyclic epoxy resin, triglycidyl isocyanurate, nano-silver, a brightening agent, a flatting agent and a defoaming agent into a high-speed mixer, mixing at the mixing speed of 700r/min for 23min to obtain a mixed material;
adding the mixed material into a double-screw extruder, wherein the temperature of an extruder I area is 108-113 ℃, the temperature of an extruder II area is 109-111 ℃, the temperature of a machine head is 113 ℃, and the mixed material is subjected to melt extrusion and is pressed into sheets;
and crushing the sheet materials into 380 meshes to obtain the powder coating.
A method for applying high-adhesion powder coating comprises the following steps:
adding the powder coating into an electrostatic spray gun, spraying the powder coating on the surface-treated plate through the electrostatic spray gun, and fully curing at 185 ℃/14min to obtain the powder coating.
Specific example 5
A high-adhesion powder coating comprises the following raw materials in parts by weight:
wherein the acid value of the polyester resin is 28mgKOH/g, and the viscosity is 70p/200 ℃; the number average molecular weight of the alicyclic epoxy resin is 6000-; the nano silver is 25 nm; the brightener is acrylate copolymer; the leveling agent is end group modified organic silicon; the defoaming agent is polydimethylsiloxane.
A preparation method of high-adhesion powder coating comprises the following steps:
adding polyester resin, alicyclic epoxy resin, triglycidyl isocyanurate, nano-silver, a brightening agent, a flatting agent and a defoaming agent into a high-speed mixer, mixing at the mixing speed of 700r/min for 18min to obtain a mixed material;
adding the mixed material into a double-screw extruder, wherein the temperature of an extruder I area is 108-112 ℃, the temperature of an extruder II area is 108-111 ℃, the temperature of a machine head is 114 ℃, and performing melt extrusion and pressing to obtain sheet materials;
and crushing the sheet materials into 360 meshes to obtain the powder coating.
A method for applying high-adhesion powder coating comprises the following steps:
adding the powder coating into an electrostatic spray gun, spraying the powder coating on the surface-treated plate through the electrostatic spray gun, and fully curing at 195 ℃/12min to obtain the powder coating.
The powder coatings of specific examples 1-5 were applied to a plate, and were subjected to staphylococcus aureus (ATCC6538P), escherichia coli (ATCC8739), adhesion (ISO2409-2007), impact strength (GB/T1732-93), front and back sides, and gloss (GB/T9754-2007) with the commercially available antibacterial powder coating of "protraction chemical" NM-SP (comparative example 1), with the following test results:
as can be seen from the above table: compared with the comparative example 1, the powder coating of the specific examples 1 to 5 has the advantages that the antibacterial rate of staphylococcus aureus and the antibacterial rate of escherichia coli of the examples 1 to 5 are more than 98%, the adhesive force reaches 0 level, the front and back surfaces of the impact strength can pass through, the 60-degree gloss is more than 90%, and compared with the comparative example 1, the comprehensive performance is greatly improved.
The steps in the method of the embodiment of the invention can be sequentially adjusted, combined and deleted according to actual needs.
The present invention has been described in detail, and the principle and embodiments of the present invention are explained by applying specific examples, which are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
Claims (10)
1. The high-adhesion powder coating is characterized by comprising the following raw materials in parts by weight:
2. the powder coating of claim 1, wherein the raw materials comprise, by weight:
3. the powder coating according to any one of claims 1-2, wherein said polyester resin has an acid value of 26-29mgKOH/g and a viscosity of 68-72p/200 ℃.
4. The powder coating of any one of claims 1-2, wherein the alicyclic epoxy resin has a number average molecular weight of 5000-9000.
5. The powder coating according to any of claims 1-2, wherein the nanosilver is between 20 and 30 nm.
6. The powder coating according to any one of claims 1-2, wherein the brightener is an acrylate copolymer.
7. The powder coating according to any one of claims 1-2, wherein the leveling agent is one of an end-group-modified silicone, an alkyl-modified organosiloxane, and a polyether-polyester-modified organosiloxane.
8. The powder coating according to any one of claims 1 to 2, wherein the defoaming agent is one of a higher alcohol fatty acid ester complex, polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropylene amine ether, polyoxypropylene glycerol ether, polyoxypropylene polyoxyethylene glycerol ether, and polydimethylsiloxane.
9. A preparation method of high-adhesion powder coating is characterized by comprising the following steps:
adding polyester resin, alicyclic epoxy resin, triglycidyl isocyanurate, nano-silver, a brightening agent, a flatting agent and a defoaming agent into a high-speed mixer, mixing at the mixing speed of 500-800r/min for 15-25min to obtain a mixed material;
adding the mixed material into a double-screw extruder, wherein the temperature of an extruder I area is 105-115 ℃, the temperature of an extruder II area is 108-112 ℃, the temperature of a machine head is 110-115 ℃, and melting, extruding and pressing into sheet materials;
the sheet material is crushed into 400 meshes of 300-.
10. The application method of the high-adhesion powder coating is characterized by comprising the following steps:
adding the powder coating into an electrostatic spray gun, spraying the powder coating on the surface-treated plate through the electrostatic spray gun, and fully curing at the temperature of 200 ℃/10-15min by 180 DEG to obtain the powder coating.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010771617.9A CN111849313A (en) | 2020-08-04 | 2020-08-04 | High-adhesion powder coating and preparation method and application method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010771617.9A CN111849313A (en) | 2020-08-04 | 2020-08-04 | High-adhesion powder coating and preparation method and application method thereof |
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|---|---|---|---|---|
| US20050025978A1 (en) * | 2003-06-11 | 2005-02-03 | Nippon Paint Co., Ltd. | Method of finish-coating automotive bodies and finished automotive bodies |
| CN103265878A (en) * | 2013-05-23 | 2013-08-28 | 天津翔盛粉末涂料有限公司 | Powder coating for vacuum coating and bottom layer of metal substrate and preparation method of powder coating |
| CN103613744A (en) * | 2013-10-22 | 2014-03-05 | 广州擎天材料科技有限公司 | Polyester resin used for TGIC-cured high-adhesive-force high-leveling-property powder coating and preparation method of the polyester resin |
| CN108373761A (en) * | 2016-11-02 | 2018-08-07 | 天津百诗特科技发展有限公司 | A kind of antimicrobial form negative oxygen ion powdery paints |
| CN109593449A (en) * | 2018-12-20 | 2019-04-09 | 重庆七彩虹新材料技术有限公司 | A kind of thermosetting property nano modification powdery paints and preparation method thereof |
-
2020
- 2020-08-04 CN CN202010771617.9A patent/CN111849313A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050025978A1 (en) * | 2003-06-11 | 2005-02-03 | Nippon Paint Co., Ltd. | Method of finish-coating automotive bodies and finished automotive bodies |
| CN103265878A (en) * | 2013-05-23 | 2013-08-28 | 天津翔盛粉末涂料有限公司 | Powder coating for vacuum coating and bottom layer of metal substrate and preparation method of powder coating |
| CN103613744A (en) * | 2013-10-22 | 2014-03-05 | 广州擎天材料科技有限公司 | Polyester resin used for TGIC-cured high-adhesive-force high-leveling-property powder coating and preparation method of the polyester resin |
| CN108373761A (en) * | 2016-11-02 | 2018-08-07 | 天津百诗特科技发展有限公司 | A kind of antimicrobial form negative oxygen ion powdery paints |
| CN109593449A (en) * | 2018-12-20 | 2019-04-09 | 重庆七彩虹新材料技术有限公司 | A kind of thermosetting property nano modification powdery paints and preparation method thereof |
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Application publication date: 20201030 |