CN-121991586-A - Powder spray coating composition and powder spray coating material and powder spray method

Abstract

The invention relates to the field of powder spraying, in particular to a powder spraying coating composition, a powder spraying coating material and a powder spraying method. The powder spraying coating composition comprises, by mass, 30-50 parts of polyethersulfone, 3-10 parts of polyaniline, 5-10 parts of polyaryletherketone and 0.01-0.5 part of surfactant. The powder spraying coating composition provided by the invention has the advantages of simple composition, low preparation cost and strong adhesive force. According to the powder spraying coating composition provided by the invention, the coating obtained after spraying is excellent in impact resistance, heat resistance and corrosion resistance according to the powder spraying method provided by the invention.

Inventors

• LUO WEIMING
• DAN WENDE
• MA HUIJUN
• DUAN JICHAO

Assignees

• 北京车和家汽车科技有限公司

Dates

Publication Date

20260508

Application Date

20241105

Claims (10)

1. 1. The powder spray coating composition is characterized by comprising the following components in parts by mass:
2. 2. The powder coating composition according to claim 1, wherein the composition comprises the following components in parts by mass:
3. 3. the powder coating composition according to claim 1 or 2, wherein, Polyethersulfones having a molecular weight of 3000 to 5000, and/or The polyaniline has a number average molecular weight of 8000-10000, and/or The number average molecular weight of the polyaryletherketone is 600-900, and/or The surfactant is a nonionic surfactant, preferably a polyol ester surfactant, more preferably a stearate.
4. 4. The powder spraying coating material is characterized by comprising a substrate and a coating attached to the substrate, wherein the coating comprises the following components in parts by weight:
5. 5. the coating material according to claim 4, wherein the coating layer comprises the following components in parts by mass:
6. 6. The coating material according to claim 4 or 5, wherein, Polyethersulfones having a number average molecular weight of 3000 to 5000, and/or The polyaniline has a number average molecular weight of 8000-10000, and/or The number average molecular weight of the polyaryletherketone is 600-900, and/or The surfactant is a nonionic surfactant, preferably a polyol ester surfactant, more preferably a stearate.
7. 7. The coating material according to claim 4 or 5, wherein, The thickness of the coating is 60-200 μm, and/or The impact strength of the coating is 50-80kg cm, and/or The coating adhesion is of the order of 0-3, and/or The salt spray resistance of the coating is 2000-3000h, and/or The matrix is selected from one or more of metal, wood, stone and plastic.
8. 8. A method of powder spraying using the powder spray coating composition of any one of claims 1-3, wherein the method comprises: Mixing according to a proportion to obtain a powder spraying coating composition, grinding the powder spraying coating composition until the particle size is less than or equal to 15 mu m, and then carrying out powder spraying.
9. 9. The method of claim 8, wherein the operating conditions of the spraying include sequentially performing a first spraying and a second spraying, the first spraying having a temperature lower than a temperature of the second spraying, the first spraying being performed for a longer period of time than the second spraying; preferably, the temperature of the first spraying is 90-100 ℃ lower than the temperature of the second spraying, and the time of the first spraying is 4-7min longer than the time of the second spraying; More preferably, the temperature of the first spray is 285-289 ℃, and the time of the first spray is 11-13min; More preferably, the temperature of the second spraying is 383-385 ℃, and the time of the second spraying is 6-7min; More preferably, the first spray is applied for 11-13 minutes at 285-289 ℃ followed by the second spray at 383-385 ℃ for 6-7 minutes.
10. 10. A powder spray coating obtained by the method according to claim 8 or 9, wherein, The thickness of the coating layer of the coating material is 60-200 mu m, and/or The coating material has a coating impact strength of 50-80kg cm, and/or The coating adhesion of the coating material is of the order of 0 to 3, and/or The salt spray resistance of the coating material is 2000-3000h.

Description

Powder spray coating composition and powder spray coating material and powder spray method Technical Field The invention relates to the field of powder spraying, in particular to a powder spraying coating composition, a powder spraying coating material and a powder spraying method. Background Polyether sulfone is a thermoplastic polymer material with excellent comprehensive performance, and is one of a few special engineering plastics. The heat-resistant insulating material has excellent heat resistance, physical and mechanical properties, insulating properties and the like, has the outstanding advantages of being capable of being used continuously at high temperature, keeping stable performance in an environment with abrupt temperature change and the like, and has been widely applied in a plurality of fields. The polyethersulfone coating is a high-performance polymer material, has the characteristics of excellent heat resistance, physical and mechanical properties, impact resistance, creep resistance, dimensional stability, hydrolysis resistance, chemical resistance, insulativity, self-extinguishing property and the like, and is widely applied to the production and manufacturing fields of electronics, electric appliances, machinery, automobiles, instruments, medical appliances, coatings, dies, ultrafiltration membranes and the like. The powder spraying is to spray the powder paint onto the surface of the workpiece with the powder spraying equipment, and the powder will be adsorbed to the workpiece surface to form powder coating. Common powder coatings include polyethylene, polypropylene, polyester, polyvinyl chloride, chlorinated polyether, polyamide, cellulose, epoxy-polyester, polyurethane, acrylic, and the like. Up to now, there are few reports in the prior art on polyethersulfone powder coatings. Disclosure of Invention The invention aims to provide a powder spraying coating composition, a powder spraying coating material and a powder spraying method, which have low cost and simple formula and can meet the required performances of adhesion, impact resistance, heat resistance, corrosion resistance and the like after spraying. In order to achieve the above object, the first aspect of the present invention provides a powder spray coating composition comprising the following components in parts by weight: 30-50 parts of polyether sulfone; 3-10 parts of polyaniline; 5-10 parts of polyaryletherketone; 0.01-0.5 part of surfactant. The invention provides a powder spraying coating material, which comprises a substrate and a coating attached to the substrate, wherein the coating comprises the following components in parts by weight: 30-50 parts of polyether sulfone; 3-10 parts of polyaniline; 5-10 parts of polyaryletherketone; 0.01-0.5 part of surfactant. The third aspect of the present invention provides a powder coating method comprising mixing in proportion to obtain a powder coating composition, grinding the composition to a particle size of 15 μm or less, and then powder coating the composition. In a fourth aspect the invention provides a powder spray coating obtainable by the process of the invention. The powder spraying coating composition with the new formula has low cost, simple formula and strong adhesive force, and the coating material obtained after spraying can meet the required performances of impact resistance, heat resistance, corrosion resistance and the like. Detailed Description The endpoints and any values of the ranges disclosed herein are not limited to the precise range or value, and are understood to encompass values approaching those ranges or values. For numerical ranges, one or more new numerical ranges may be found between the endpoints of each range, between the endpoint of each range and the individual point value, and between the individual point value, in combination with each other, and are to be considered as specifically disclosed herein. The invention provides a powder spraying coating composition which comprises the following components in parts by mass: 30-50 parts of polyether sulfone; 3-10 parts of polyaniline; 5-10 parts of polyaryletherketone; 0.01-0.5 part of surfactant. The powder spraying coating composition with the new formula has low cost, simple formula and strong adhesive force, and the coating material obtained after spraying can meet the required performances of impact resistance, heat resistance, corrosion resistance and the like. According to a preferred embodiment of the invention, the composition comprises the following components in parts by weight: 32.5-45 parts of polyether sulfone; 6-9 parts of polyaniline; 5.7-8.3 parts of polyaryletherketone; 0.05-0.3 parts of surfactant. By adopting the technical scheme, the powder spraying coating composition has the advantages of stronger adhesive force, and the obtained coating material after spraying has better impact resistance, heat resistance and corrosion resistance. In the present invention, the optional ran