CN111690319A - Novel automatically cleaning plastic-coated steel pipe - Google Patents
Novel automatically cleaning plastic-coated steel pipe Download PDFInfo
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- CN111690319A CN111690319A CN202010619970.5A CN202010619970A CN111690319A CN 111690319 A CN111690319 A CN 111690319A CN 202010619970 A CN202010619970 A CN 202010619970A CN 111690319 A CN111690319 A CN 111690319A
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- steel pipe
- acrylic resin
- coated steel
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- cleaning plastic
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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
-
- 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
- B05D7/22—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 to internal surfaces, e.g. of tubes
- B05D7/222—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 to internal surfaces, e.g. of tubes of pipes
- B05D7/225—Coating inside the pipe
-
- 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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/64—Macromolecular compounds not provided for by groups C08G18/42 - C08G18/63
- C08G18/6469—Macromolecular compounds not provided for by groups C08G18/42 - C08G18/63 having silicon
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/67—Unsaturated compounds having active hydrogen
- C08G18/68—Unsaturated polyesters
-
- 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
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
- F16L9/147—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
- Laminated Bodies (AREA)
Abstract
The invention relates to the technical field of pipes, in particular to a novel self-cleaning plastic-coated steel pipe and a preparation method thereof, wherein the novel self-cleaning plastic-coated steel pipe comprises a steel pipe, wherein a polyurethane/silicon modified acrylic resin powder coating layer is coated on the inner wall of the steel pipe; the polyurethane/silicon modified acrylic resin powder coating layer consists of hydroxyl polyester, silicon modified hydroxyl acrylic resin, curing agent sealed polyisocyanate and a flatting agent; the invention has the characteristics of hydrophobic and oleophobic properties, can avoid the scale deposition on the inner surface of the plastic steel pipe, has small roughness coefficient, improves the impact resistance of the pipe and has good actual use effect.
Description
Technical Field
The invention relates to the technical field of pipes, in particular to a novel self-cleaning plastic-coated steel pipe and a preparation method thereof.
Background
The plastic-coated steel pipe, also known as plastic-coated pipe, steel-plastic composite pipe and plastic-coated composite steel pipe, is a steel-plastic composite steel pipe which uses steel pipe as base body and adopts the processes of spraying, rolling, soaking and absorbing to weld a layer of plastic anticorrosive layer on the inner surface of the steel pipe or weld plastic anticorrosive layers on the inner and outer surfaces of the steel pipe. The plastic-coated steel pipe is suitable for conveying water supply and drainage, seawater, warm water, oil, gas and other media.
Because media such as seawater, warm water, oil, gas and the like contain a plurality of impurities, the inner surface of the plastic-coated steel pipe is subjected to scale deposition after long-time conveying, the cleaning is difficult, the impact resistance of the plastic-coated steel pipe is reduced, and the plastic-coated steel pipe is influenced; in addition, the inner surface of the existing plastic-coated steel pipe in the market has poor corrosion resistance, particularly the plastic-coated steel pipe used in the water conservancy field has rough inner surface and is easy to scale, and the plastic anticorrosive coating sprayed on the inner surface of the plastic-coated steel pipe pollutes the pipeline environment after being corroded, thereby influencing the actual use effect of the plastic-coated steel pipe.
Disclosure of Invention
Aiming at the defects, the invention provides a novel self-cleaning plastic-coated steel pipe which has hydrophobic and oleophobic characteristics, can avoid scale deposition on the inner surface of the plastic-coated steel pipe, has small roughness coefficient, improves the impact resistance of the pipe and has good actual use effect and a preparation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
the novel self-cleaning plastic-coated steel pipe comprises a steel pipe, wherein a polyurethane/silicon modified acrylic resin powder coating layer is coated on the inner wall of the steel pipe;
the polyurethane/silicon modified acrylic resin powder coating layer is prepared from the following raw materials in parts by weight: 80-100 parts of hydroxyl polyester, 40-50 parts of silicon modified hydroxyl acrylic resin, 10-90 parts of curing agent blocked polyisocyanate and 10-20 parts of leveling agent.
Further, the polyurethane/silicon modified acrylic resin powder coating layer is prepared by the following method: and adding the hydroxyl polyester, the silicon-modified hydroxyl acrylic resin, the blocked polyisocyanate and the flatting agent into a high-speed mixer to be uniformly mixed, then adding the mixture into a double-screw extruder to be melted, tabletting, crushing, grinding and grading to obtain a powder coating, spraying the powder coating on the inner wall of the steel pipe, and baking to obtain the coating.
Further, the hydroxyl polyester is one of aliphatic hydrocarbon and aromatic hydrocarbon.
Further, the silicon-modified hydroxy acrylic resin is one of fluorine-silicon modified hydroxy acrylic resin, organic silicon modified hydroxy acrylic resin and hydroxyl-terminated polyester resin.
Further, the blocked polyisocyanate is one of phenol blocked polyisocyanate, caprolactam blocked aromatic polyisocyanate, and methyl ethyl ketone blocked HDI polyisocyanate.
Further, the leveling agent is one of polydimethylsiloxane, polymethylphenylsiloxane and polyether polyester modified organosiloxane.
Further, the temperature of melting, tabletting, crushing and grinding in the double-screw extruder is 125 ℃.
Furthermore, the spraying mode adopts a corona type electrostatic spray gun to spray on the inner surface of the steel pipe, and the spraying thickness is not less than 2 mm.
Further, the polyurethane/silicon modified acrylic resin powder coating is sprayed to the inner surface of the steel pipe under the condition that the voltage is 60 kV.
Further, the baking conditions are as follows: and (3) baking the steel pipe in an oven at 200 ℃ for 15min for curing.
The invention has the beneficial effects that:
1. the silicon modified hydroxy acrylic resin is functional resin which takes hydroxy acrylic resin as matrix resin and is modified by long-chain polysiloxane. One end of a molecular chain contains a reactive hydroxyl functional group, can react with an isocyanate group in a polyurethane curing agent, is fixed on the surface of a polyurethane coating steel pipe in a chemical bond mode, and cannot migrate in the using process, so that the polyurethane coating steel pipe has better durability; the other end of the polyurethane coating contains a polysiloxane chain segment with low surface energy, can be enriched on the surface of the polyurethane coating in the thermocuring process, has hydrophobic and oleophobic characteristics, and can provide easy cleaning and anti-doodling performance;
2. the contact angle between water and the inner wall of the pipeline of the common anticorrosive pipe is 74 degrees, the contact angle between water and the inner wall of the novel pipe is 105 degrees, and the hydrophobic property of the novel pipe is far superior to that of the common pipe in the market;
3. the excellent anti-graffiti performance of the cleaning agent enables the cleaning agent to have quite good cleaning performance while not causing pollution to fluid on the inner wall of the pipeline;
4. the forming mode and the structure of the polyurethane/silicon modified acrylic resin powder coating layer on the inner wall of the pipe enable the pipe to have quite high impact resistance.
The invention has the hydrophobic and oleophobic characteristics, can avoid the scale deposition on the inner surface of the plastic steel pipe, has small roughness coefficient, improves the impact resistance of the pipe and has good actual use effect.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
reference numerals: a steel pipe 1; polyurethane/silicon modified acrylic resin powder coating layer 2.
Detailed Description
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the embodiments will be further described below:
example 1
As shown in figure 1, the novel self-cleaning plastic-coated steel pipe comprises a steel pipe 1, wherein a polyurethane/silicon modified acrylic resin powder coating layer 2 is coated on the inner wall of the steel pipe 1; the polyurethane/silicon modified acrylic resin powder coating layer 2 is prepared by the following method: adding 80 parts of hydroxyl polyester, 40 parts of silicon modified hydroxyl acrylic resin, 10 parts of curing agent-blocked polyisocyanate and 10 parts of flatting agent into a high-speed mixer to be uniformly mixed, then adding the mixture into a double-screw extruder to be melted, tabletting, crushing, grinding and grading to prepare a powder coating, wherein the working temperature of the double-screw extruder is 125 ℃, then spraying the powder coating on the inner wall of the steel pipe 1 by adopting a corona type electrostatic spray gun under the condition of 60kV voltage, and then baking the steel pipe in an oven at 200 ℃ for 15min to be cured to form the coating.
Example 2
As shown in figure 1, the novel self-cleaning plastic-coated steel pipe comprises a steel pipe 1, wherein a polyurethane/silicon modified acrylic resin powder coating layer 2 is coated on the inner wall of the steel pipe 1; the polyurethane/silicon modified acrylic resin powder coating layer 2 is prepared by the following method: adding 80 parts of hydroxyl polyester, 45 parts of silicon modified hydroxyl acrylic resin, 20 parts of curing agent-blocked polyisocyanate and 10 parts of flatting agent into a high-speed mixer to be uniformly mixed, then adding the mixture into a double-screw extruder to be melted, tabletting, crushing, grinding and grading to prepare a powder coating, wherein the working temperature of the double-screw extruder is 125 ℃, then spraying the powder coating on the inner wall of the steel pipe 1 by adopting a corona type electrostatic spray gun under the condition of 60kV voltage, and then baking the steel pipe in an oven at 200 ℃ for 15min to be cured to form the coating.
Example 3
As shown in figure 1, the novel self-cleaning plastic-coated steel pipe comprises a steel pipe 1, wherein a polyurethane/silicon modified acrylic resin powder coating layer 2 is coated on the inner wall of the steel pipe 1; the polyurethane/silicon modified acrylic resin powder coating layer 2 is prepared by the following method: adding 90 parts of hydroxyl polyester, 45 parts of silicon modified hydroxyl acrylic resin, 40 parts of curing agent-blocked polyisocyanate and 15 parts of flatting agent into a high-speed mixer to be uniformly mixed, then adding the mixture into a double-screw extruder to be melted, tabletting, crushing, grinding and grading to prepare the powder coating, wherein the working temperature of the double-screw extruder is 125 ℃, then spraying the powder coating on the inner wall of the steel pipe 1 by adopting a corona type electrostatic spray gun under the condition of 60kV voltage, and then baking the steel pipe in an oven at 200 ℃ for 15min to be cured to form the coating.
Example 4
As shown in figure 1, the novel self-cleaning plastic-coated steel pipe comprises a steel pipe 1, wherein a polyurethane/silicon modified acrylic resin powder coating layer 2 is coated on the inner wall of the steel pipe 1; the polyurethane/silicon modified acrylic resin powder coating layer 2 is prepared by the following method: 100 parts of hydroxyl polyester, 48 parts of silicon modified hydroxyl acrylic resin, 70 parts of curing agent blocked polyisocyanate and 15 parts of flatting agent are added into a high-speed mixer to be uniformly mixed, then the mixture is added into a double-screw extruder to be melted, tableted, crushed, ground and classified to prepare powder coating, wherein the working temperature of the double-screw extruder is 125 ℃, the powder coating is sprayed on the inner wall of the steel pipe 1 by adopting a corona type electrostatic spray gun under the condition that the voltage is 60kV, and then the steel pipe is placed into an oven at 200 ℃ to be baked for 15min to be cured to form the coating.
The hydroxyl polyester is polymerized by saturated dihydric alcohol and unsaturated dibasic acid (or anhydride); the leveling agent adopts an organic silicon leveling agent, and migrates to the inner surface of the steel pipe through limited compatibility to influence the surface properties such as tension in a spraying interface, so that the sprayed substance obtains good leveling.
The examples 1-4 and comparative examples were subjected to various performance tests, the results of which are shown in the following table:
and (3) determination of corrosion resistance: the determination is carried out based on GB/T14976-2002;
determination of impact toughness: assay based on GBT 229-2007;
contact angle: assays were performed based on DB 44/T1232-2013;
| example 1 | Example 2 | Example 3 | Example 4 | |
| Corrosion resistance (mm/a.V) | 0.007 | 0.0075 | 0.009 | 0.006 |
| Impact toughness (J/cm) at 400c2) | 33.2 | 33.4 | 33.9 | 32.9 |
| Contact angle (°, oil) | 96 | 98 | 100 | 99 |
| Contact angle (°, water) | 100 | 100 | 105 | 103 |
| Surface tension | ≥40dyn | ≥41dyn | ≥41dyn | ≥43dyn |
| Safety performance | Superior food | Superior food | Superior food | Superior food |
| Coating speed (m/min) | 300 | 300 | 300 | 300 |
| Anti-graffiti property (oil marking pen) | 4 stage | 4 stage | 4 stage | 4 stage |
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the described embodiments may be made by those skilled in the art without departing from the scope and spirit of the invention as defined by the accompanying claims.
Claims (10)
1. Novel automatically cleaning plastic-coated steel pipe, its characterized in that: the steel pipe comprises a steel pipe (1), wherein a polyurethane/silicon modified acrylic resin powder coating layer (2) is coated on the inner wall of the steel pipe (1);
the polyurethane/silicon modified acrylic resin powder coating layer (2) is prepared from the following raw materials in parts by weight: 80-100 parts of hydroxyl polyester, 40-50 parts of silicon modified hydroxyl acrylic resin, 10-90 parts of blocked polyisocyanate and 10-20 parts of a leveling agent.
2. The novel self-cleaning plastic-coated steel tube of claim 1, wherein: the polyurethane/silicon modified acrylic resin powder coating layer is prepared by the following method: adding the hydroxyl polyester, the silicon-modified hydroxyl acrylic resin, the closed polyisocyanate and the leveling agent into a high-speed mixer to be uniformly mixed, then adding the mixture into a double-screw extruder to be melted, tabletting, crushing, grinding and grading to obtain a powder coating, spraying the powder coating on the inner wall of the steel pipe (1), and baking to obtain the steel pipe.
3. The novel self-cleaning plastic-coated steel pipe as recited in claim 1, wherein said hydroxyl polyester is one of aliphatic hydrocarbon group and aromatic hydrocarbon group.
4. The novel self-cleaning plastic-coated steel tube as claimed in claim 1, wherein the silicon-modified hydroxy acrylic resin is one of fluoro-silicone-modified hydroxy acrylic resin, organosilicon-modified hydroxy acrylic resin and hydroxyl-terminated polyester resin.
5. The self-cleaning plastic-coated steel tube as set forth in claim 1, wherein the blocked polyisocyanate is one of phenol blocked polyisocyanate, caprolactam blocked aromatic polyisocyanate, and methyl ethyl ketone blocked HDI polyisocyanate.
6. The novel self-cleaning plastic-coated steel tube as recited in claim 1, wherein the leveling agent is one of polydimethylsiloxane, polymethylphenylsiloxane, polyether polyester modified organosiloxane.
7. The novel self-cleaning plastic-coated steel tube of claim 2, wherein: melting, tabletting, crushing and grinding in the double-screw extruder at 125 ℃.
8. The novel self-cleaning plastic-coated steel tube of claim 3, wherein: the spraying mode adopts a corona type electrostatic spray gun to spray on the inner surface of the steel pipe (1), and the spraying thickness is not less than 2 mm.
9. The novel self-cleaning plastic-coated steel tube of claim 4, wherein: the polyurethane/silicon modified acrylic resin powder coating is sprayed to the inner surface of the steel pipe (1) under the condition that the voltage is 60 kV.
10. The novel self-cleaning plastic-coated steel tube of claim 5, wherein: the baking conditions are as follows: baking in an oven at 200 deg.C for 15min for curing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010619970.5A CN111690319A (en) | 2020-07-01 | 2020-07-01 | Novel automatically cleaning plastic-coated steel pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010619970.5A CN111690319A (en) | 2020-07-01 | 2020-07-01 | Novel automatically cleaning plastic-coated steel pipe |
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| CN111690319A true CN111690319A (en) | 2020-09-22 |
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| CN202010619970.5A Pending CN111690319A (en) | 2020-07-01 | 2020-07-01 | Novel automatically cleaning plastic-coated steel pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114854293A (en) * | 2022-06-17 | 2022-08-05 | 中车株洲车辆有限公司 | Polyurea coating and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101434806A (en) * | 2008-12-18 | 2009-05-20 | 扬州三川实业有限公司 | Anti-corrosive powder paint for steel support frame |
| CN107001843A (en) * | 2014-11-11 | 2017-08-01 | 旭硝子株式会社 | Powder coating composition, powder coating and coated article |
| KR20190016772A (en) * | 2017-08-09 | 2019-02-19 | 주식회사 그래핀 코어 | Paint compositions for coating, Method for manufacturing coating steel pipe using the same and coating steel pipe by the same |
| CN110343445A (en) * | 2019-07-17 | 2019-10-18 | 中国科学院过程工程研究所 | A kind of powder paint compositions and its preparation method and application |
| CN110669420A (en) * | 2019-10-10 | 2020-01-10 | 湖南连心科技有限公司 | Anti-doodling polyurethane powder coating and preparation method and application thereof |
| CN111303751A (en) * | 2020-03-10 | 2020-06-19 | 安徽华辉塑业科技股份有限公司 | Self-repairing powder coating based on polyurethane resin and preparation method thereof |
-
2020
- 2020-07-01 CN CN202010619970.5A patent/CN111690319A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101434806A (en) * | 2008-12-18 | 2009-05-20 | 扬州三川实业有限公司 | Anti-corrosive powder paint for steel support frame |
| CN107001843A (en) * | 2014-11-11 | 2017-08-01 | 旭硝子株式会社 | Powder coating composition, powder coating and coated article |
| KR20190016772A (en) * | 2017-08-09 | 2019-02-19 | 주식회사 그래핀 코어 | Paint compositions for coating, Method for manufacturing coating steel pipe using the same and coating steel pipe by the same |
| CN110343445A (en) * | 2019-07-17 | 2019-10-18 | 中国科学院过程工程研究所 | A kind of powder paint compositions and its preparation method and application |
| CN110669420A (en) * | 2019-10-10 | 2020-01-10 | 湖南连心科技有限公司 | Anti-doodling polyurethane powder coating and preparation method and application thereof |
| CN111303751A (en) * | 2020-03-10 | 2020-06-19 | 安徽华辉塑业科技股份有限公司 | Self-repairing powder coating based on polyurethane resin and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114854293A (en) * | 2022-06-17 | 2022-08-05 | 中车株洲车辆有限公司 | Polyurea coating and preparation method thereof |
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Application publication date: 20200922 |