CN111303736A - Powder coating - Google Patents
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- CN111303736A CN111303736A CN202010305010.1A CN202010305010A CN111303736A CN 111303736 A CN111303736 A CN 111303736A CN 202010305010 A CN202010305010 A CN 202010305010A CN 111303736 A CN111303736 A CN 111303736A
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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
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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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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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
- C09D5/03—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
- C09D5/03—Powdery paints
- C09D5/033—Powdery paints characterised by the additives
- C09D5/035—Coloring agents, e.g. pigments
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- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- 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
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
-
- 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
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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)
- Chemical Kinetics & Catalysis (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a powder coating. The powder coating is prepared from the following raw materials in parts by weight, 30-35 parts of polyester resin; 30-35 parts of epoxy resin; 30.5-30.9 parts of pigment and filler; 0.2-0.4 part of anti-foaming agent; 0.3-0.5 part of degassing agent; 3.5-3.7 parts of HAA curing agent; 0.9-1.1 parts of bulking agent. The coating disclosed by the invention utilizes polyester resin and epoxy resin as parent materials, is supplemented with pigments and fillers as connecting frameworks, is simultaneously enhanced in physical properties by using HAA curing agents and bulking agents, is supplemented with anti-foaming agents and degassing agents to perform synergistic action with the raw materials, avoids shrinkage cavity formation of the powder coating after film formation, and improves the leveling property and glossiness of the powder coating.
Description
Technical Field
The present invention relates to the field of powder coatings, more specifically it relates to a powder coating.
Background
The powder coating is an efficient, novel and green environment-friendly solid coating, and is favored in the coating industry in recent years because of no VOC emission and high utilization rate in production and construction links, so that the powder coating becomes one of the best choices for replacing paint. The powder coating is applied to the shells of household appliances, particularly refrigerators, freezers, air conditioners, freezers for medical use and the like. The epoxy polyester powder coating is a thermosetting powder coating, is prepared by adopting epoxy resin and polyester resin as main raw materials, and has respective unique properties of the epoxy resin and the polyester resin, so that the produced coating has excellent leveling property, decorative property, mechanical property and stronger corrosion resistance.
In the coating process of the existing refrigeration household appliance, a box body of the household appliance is hung on a coating assembly line. During spraying, powder coating can be sprayed on the inner wall and the outer wall of the box body, so that the surface of the box body is required to be flat in film coating and have good mechanical performance, the film coating is prevented from falling off, and the appearance and the refrigeration effect of a product are ensured. After the coating is sprayed, a closed space in the box body needs to be filled with a foaming thermal insulation material to serve as a filling layer, and at the moment, the foaming thermal insulation material is in contact with the coating and generates gases such as cyclopentane and the like, so that the surface of the filling layer is hollow, the thermal insulation effect of the household appliance is affected, and the energy consumption of the household appliance is further increased.
Chinese patent with publication number CN109988489A discloses a powder coating, which comprises the following raw materials in parts by weight: 50-60 parts of polyester resin, 3-7 parts of HAA curing agent, 30.1-50.1 parts of pigment and filler, 0.2-1.0 part of flatting agent, 0.1-0.8 part of benzoin, 0.1-0.8 part of defoaming agent and 1.1-2.3 parts of fumed silica.
The above prior art solutions have the following drawbacks:
1. the main component of the existing leveling agent is butyl acrylate generally, and after the powder coating is sprayed, the hydroxyalkyl amide component in the HAA curing agent is easy to react with carboxyl in the leveling agent to generate water and influence the leveling property of a coating film, so that shrinkage cavities are generated on the surface of the coating film;
2. meanwhile, due to the existence of the shrinkage cavity, the hollow state of the surface of the filling layer is aggravated, the foam heat-insulation material is not completely attached to the inner wall of the box body, the energy consumption of household appliances is increased, and even the partial peeling of the filling layer is caused;
3. in addition, the HAA curing agent is sensitive to benzoin, and although the used fumed silica plays a certain role in resisting oxidation and yellowing, the fumed silica has a strong negative electricity tendency and can influence the leveling property and the glossiness of a coating film.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a powder coating which solves the problems that shrinkage cavities are easy to generate during coating of the conventional powder coating, and the leveling property and the glossiness of a coating film are poor, and has the advantages of eliminating the shrinkage cavities of the coating film and increasing the leveling property and the glossiness of the coating film.
In order to achieve the purpose, the invention provides the following technical scheme:
a powder coating is prepared from the following raw materials in parts by weight,
by adopting the technical scheme, an epoxy polyester system is formed by utilizing polyester resin and epoxy resin, and the pigment and the filler are used as a connecting framework to play a role in filling and curing so as to ensure the mechanical property of the powder coating; then, the positive electricity tendency of the powder coating is enhanced by using an HAA curing agent and a loosening agent, and the powder coating rate during powder coating is promoted so as to ensure the mechanical property and the leveling property during powder coating; finally, under the combined action of the anti-foaming agent and the degassing agent, shrinkage cavities are prevented from being formed after the film is formed by the powder coating, and the glossiness of the film is good; in summary, the powder coating forms an epoxy polyester system by using polyester resin and epoxy resin with a small addition amount of the auxiliary agent, is assisted by pigment and filler as a connecting framework, enhances the positive electricity tendency of the powder coating by using an HAA curing agent and a bulking agent, and is assisted by an anti-foaming agent and a degassing agent to perform a synergistic effect, so that shrinkage cavity formation of the powder coating after film formation is avoided, and meanwhile, the leveling property and the glossiness of the powder coating are improved.
Further, the epoxy resin is bisphenol A solid epoxy resin. The bisphenol A solid epoxy resin is suitable for producing thermosetting powder coating, and the produced powder coating has good glossiness, leveling property and mechanical property.
Preferably, the polyester resin is a saturated polyester resin. The saturated polyester resin is generally applicable to paint, and is firstly applied to powder coating, and the saturated polyester resin can be crosslinked with bisphenol A solid epoxy resin and HAA curing agent, so that the powder coating has good weather resistance and low-temperature curing performance.
Further, the pigment and filler comprises the following raw materials in parts by weight, 10.6-10.8 parts of barium sulfate; 19.9-20.1 parts of titanium dioxide. The pigment and filler in the formula proportion has better coloring and filling properties, so that the powder coating has better powdering rate, and yellowing after film forming is avoided.
Further, the anti-foaming agent is composed of the following raw materials by weight parts, 65-70 parts of acrylic polymer; 30-35 parts of silica gel. The acrylic polymer is used for replacing a flatting agent, a brightener and the like, the shrinkage cavity on the surface of the coating film is repaired, and the flatting property and the glossiness of the powder coating are enhanced; meanwhile, water generated by the reaction of the HAA curing agent and carboxyl groups in other raw materials is absorbed by the silica gel, and the silica gel also has a moisture absorption function, so that the powder coating has a better powder coating rate, and further the purposes of eliminating film shrinkage cavity and increasing film leveling property and glossiness are achieved; in addition, the hydrated silica gel and the acrylic polymer are mixed according to the proportion, so that the problem of poor compatibility of the acrylic polymer and other raw materials can be solved, and the crosslinking of the acrylic polymer and other raw materials can be promoted.
Further, the degassing agent is benzoin. The benzoin is used for eliminating the problems of pinholes, shrinkage cavities, bubbles and the like generated in the curing process of the powder coating, and can promote the diffusion of gas generated by the foaming thermal insulation material in the epoxy-polyester resin; the benzoin with the formula proportion has the function of the original defoaming agent, but the usage amount is less, the cost is reduced, the surface of a coating film is complete, and the bonding strength of a filling layer in a household appliance box body is enhanced.
Preferably, the bulking agent is a gaseous aluminum oxide. The meteorological aluminum oxide has a strong typical tendency, which is beneficial to the formation of static electricity in the powder coating, avoids the problem of reduced leveling property caused by the static electricity, and improves the looseness of the powder coating; meanwhile, the gas-phase aluminum oxide has an anti-oxidation effect, and in the formula proportion, the oxidation reaction of the HAA curing agent and benzoin can be inhibited without adding an antioxidant, so that the oxidation yellowing of a coating film is avoided.
In conclusion, the invention has the following beneficial effects: the polyester resin and the epoxy resin are utilized to form an epoxy polyester system, the pigment and the filler are used as a connecting framework, the HAA curing agent and the bulking agent are utilized to enhance the positive electricity tendency of the powder coating, and the foaming agent and the degassing agent are used for synergistic action, so that shrinkage cavity formation of the powder coating after film formation is avoided, and the leveling property and the glossiness of the powder coating are improved.
Drawings
FIG. 1 is a flow chart of a method provided in an embodiment of the present invention;
FIG. 2 is an appearance inspection of a sample according to a first embodiment of the present invention;
FIG. 3 is an appearance inspection view of a sample of example two of the present invention;
FIG. 4 is an appearance inspection view of a sample of example III of the present invention;
FIG. 5 is an appearance inspection view of a sample of example four of the present invention;
FIG. 6 is an appearance inspection of a sample of example five of the present invention;
FIG. 7 is an appearance inspection view of a sample of comparative example one of the present invention;
fig. 8 is an appearance inspection view of a sample of comparative example two of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and examples.
Examples
Example 1: a powder paint is prepared from epoxy resin, polyester resin, pigment and filler, benzoin, electric charge promoter and anti-foaming agent. Referring to fig. 1, the powder coating is prepared by the steps of,
s1 mixing materials, namely firstly coarsely crushing the raw materials before use, then weighing the raw materials according to the proportion, and then putting the raw materials into mixing equipment for premixing for 20min to obtain a mixture;
s2, extruding, conveying the mixture to an extrusion working section, sequentially extruding, rolling, cooling at normal temperature and coarsely crushing to obtain a semi-finished product,
s3, crushing, conveying the semi-finished product to a crushing section, sequentially performing fine crushing, cyclone separation and grading screening, and packaging to obtain a sample with the particle size of 25-35 mu m.
Wherein different scales are selected according to different weighing quantities before weighing,
A. a counter scale or an electronic scale is used when the weighing mass is below 10kg and above 1 kg;
B. when the weight is below 100g, a tray balance or an electronic scale with 0.1g sensing quantity is used;
C. a tray balance or an electronic scale with a sensing amount of 0.5g is used for weighing the weight of more than 100g and less than 1 kg.
An extrusion section: the inner region is at 60-90 deg.C and 500r/min, and the outer region is at 90-120 deg.C and 800-.
The specifications of the components in the raw materials are shown in table 1, and the components and the weights of the powder coating raw materials are shown in table 2.
TABLE 1 model and manufacturer of each component in the raw materials
| Components | Type/ingredient | Manufacturer/origin |
| Polyester resin | 6080 | Intelligent formation of Anhui Hui |
| Epoxy resin | E-12 | Meijia Anhui |
| Barium sulfate | BL-95 | Zhongtai Hubei |
| Titanium white powder | 312 | Anna dada for Anhui |
| Degassing agent | Benzoinum | Ningbo Wei regular script |
| HAA curing agent | SA3120 | Six-agilawood |
| Loosening agent | Aluminum oxide C | German Germany |
| Anti-foaming agent | CP 77; comprising silica gel and acrylic polymer in a formulation ratio | Eister et al |
| Leveling agent | WL588 | Ningbo Wei regular script |
| Brightener | WK701 | Ningbo Wei regular script |
Example 2: a powder coating is different from example 1 in that the components and parts by weight of the raw materials are shown in Table 2.
Example 3: a powder coating is different from example 1 in that the components and parts by weight of the raw materials are shown in Table 2.
Example 4: a powder coating is different from example 1 in that the components and parts by weight of the raw materials are shown in Table 2.
Example 5: a powder coating is different from example 1 in that the components and parts by weight of the raw materials are shown in Table 2.
Comparative example
Comparative example 1: a powder coating is different from the powder coating in the embodiment 1 in that the powder coating is prepared from epoxy resin, polyester resin, pigment and filler, benzoin, a charging assistant, a leveling agent and a brightener, wherein the pigment and filler are prepared by mixing 9:20 barium sulfate and titanium dioxide. Wherein, the components and the parts by weight of the raw materials are shown in the table 2.
Comparative example 2: a powder coating is different from example 1 in that the components and parts by weight of the raw materials are shown in Table 2.
TABLE 2 Components and weights of the materials
| Component/kg | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Comparative example 1 | Comparative example 2 |
| Polyester resin | 32.0 | 30.0 | 31.0 | 33.0 | 35.0 | 32.0 | 33.0 |
| Epoxy resin | 32.0 | 33.0 | 35.0 | 30.0 | 31.0 | 32.0 | 30.0 |
| Barium sulfate | 10.7 | 10.6 | 10.8 | 10.7 | 10.8 | 9.0 | 10.6 |
| Titanium white powder | 20.0 | 19.9 | 20.0 | 20.1 | 19.9 | 20.0 | 19.9 |
| Degassing agent | 0.4 | 0.5 | 0.4 | 0.3 | 0.3 | 0.4 | 0.2 |
| HAA curing agent | 3.6 | 3.6 | 3.5 | 3.7 | 3.6 | 3.6 | 4.0 |
| Loosening agent | 1.0 | 0.9 | 1.1 | 1.0 | 0.9 | 1.0 | 1.0 |
| Anti-foaming agent | 0.3 | 0.4 | 0.2 | 0.2 | 0.4 | 0 | 0.1 |
| Leveling agent | - | - | - | - | - | 1.0 | 0 |
| Brightener | - | - | - | - | - | 1.0 | 0 |
Performance test
Referring to fig. 2-8, the powder coating sample of the present invention is uniformly sprayed on the pretreated tinplate by an electrostatic spraying device, and the tinplate should be in a vertically suspended state, so as to facilitate uniform spraying of the powder coating thereon; vertically hanging the film in an oven at 120 ℃, curing for 20min to form a film, forming a film with the thickness of about 80 μm, naturally cooling to room temperature, taking out and standing for 24h to obtain a coating film sample. Finally, various properties of the coating film samples were measured, and the results of the measurements are shown in tables 3 and 4.
The quality index and the detection method of the leveling property detection test are shown in GB/T21776-2008, and the quality index and the detection method of other performance detection tests are shown in HG/T2006-2006.
TABLE 3 results of measurements of mechanical properties and appearance properties of the coating film
TABLE 4 results of testing other properties of epoxy/polyester powder coatings
As can be seen from Table 3, the powder coatings of this example have slightly better mechanical properties than the comparative examples in terms of mechanical properties, i.e., the indices relating to impact resistance and bending test. In terms of appearance performance of a coating film, the surface of the powder coating of the embodiment is flat and has no shrinkage cavity, and the glossiness and the leveling property of the powder coating of the embodiment are higher than those of the comparative example. The powder coating prepared by the formula proportion can solve the problem of shrinkage cavity of the existing powder coating, and improves the leveling property and the glossiness of the powder coating on the premise of ensuring the mechanical property.
As can be seen from Table 4, the powder coating prepared by the formulation ratio of the present invention meets the relevant indexes of indoor superior products. The powder coating of the comparative example meets the relevant indexes of qualified products for indoor use. Namely, the powder coating of the present invention is superior to the powder coating of the comparative example in overall performance.
And (3) comparing the detection results with those of examples 1-5 and comparative example 1, wherein in the comparative example 1, a leveling agent beneficial to leveling a coating film and a brightener beneficial to increasing the coating brightness are adopted to replace an anti-foaming agent, wherein the leveling agent mainly comprises butyl acrylate, and the brightener mainly comprises methyl methacrylate. However, comparative example 1 was inferior to examples 1 to 5 in each of the mechanical properties and the appearance of the coating film. This is because the HAA curing agent reacts with the leveling agent and the gloss enhancer to form water, so that the HAA curing agent does not cure, but rather causes shrinkage cavities and oxidation of the powder coating, which is not favorable for improving the leveling property and gloss of the powder coating. The addition of the anti-foaming agent in examples 1-5 solves this problem.
Comparing examples 1 to 5 with comparative example 2, in comparative example 2, the contents of the degassing agent and the anti-foaming agent were mainly reduced and the content of the HAA curing agent was increased, and in this formulation ratio, each index of the mechanical properties and the appearance of the coating film of comparative example 2 was lower than those of examples 1 to 5. This is because the anti-foaming agent and the degassing agent do not form a coordinated reaction system with the HAA curing agent in the formulation ratio of comparative example 2, and excessive water, bubbles, etc. remain in the powder coating of comparative example 2 and affect the leveling property and gloss of the powder coating. The proportions of the raw materials in examples 1-5 solve this problem.
In addition, taking example 1 and comparative example 1 as examples, the unit price of the anti-foaming agent of example 1 was about 90 yuan/kg, and the unit price of the leveling agent and gloss enhancer of comparative example 1 was 25 yuan/kg. However, since the amount of each raw material added in this example is small, the production cost per unit of the powder coating produced in example 1 can be reduced by about 250 yuan/t. According to the statistical data of the association of powder coating industries, the amount of the powder coating used in the refrigeration industry (refrigerators, freezers, air conditioners and the like) of China in 2019 is about 15 ten thousand tons, and the economic benefit is high.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (7)
1. A powder coating is characterized by being prepared from the following raw materials in parts by weight,
2. the powder coating of claim 1, wherein the epoxy resin is a bisphenol a solid epoxy resin.
3. A powder coating according to claim 2, wherein said polyester resin is a saturated polyester resin.
4. The powder coating of claim 1, wherein the pigment and filler are composed of raw materials comprising, in parts by weight,
10.6-10.8 parts of barium sulfate;
19.9-20.1 parts of titanium dioxide.
5. The powder coating of claim 1, wherein the anti-foaming agent is comprised of raw materials in parts by weight per 100 parts of the anti-foaming agent,
65-70 parts of acrylic polymer;
30-35 parts of silica gel.
6. A powder coating according to claim 1, wherein the degassing agent is benzoin.
7. The powder coating of claim 6, wherein the bulking agent is a gas phase alumina.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010305010.1A CN111303736A (en) | 2020-04-17 | 2020-04-17 | Powder coating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010305010.1A CN111303736A (en) | 2020-04-17 | 2020-04-17 | Powder coating |
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| CN111303736A true CN111303736A (en) | 2020-06-19 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101955720A (en) * | 2010-05-12 | 2011-01-26 | 海尔集团公司 | Glittery metallic powder coating and preparation method thereof |
| KR101477852B1 (en) * | 2012-01-11 | 2014-12-30 | 조광페인트주식회사 | Thermosetting powder coating composition for roof rack of automobile and method of manufacturing the same |
| CN107936786A (en) * | 2017-12-20 | 2018-04-20 | 青岛豪元晟五金塑胶有限公司 | Bonding Pearlescent powder paint and its preparation process |
| CN108822700A (en) * | 2018-05-25 | 2018-11-16 | 安徽华辉塑业科技股份有限公司 | A kind of grey sand streak waterproof powdery paints applied on electric appliance |
| CN109988489A (en) * | 2019-04-15 | 2019-07-09 | 深圳市威富通讯技术有限公司 | Powdery paints and its preparation method and application |
| CN110317527A (en) * | 2019-07-30 | 2019-10-11 | 中国科学院过程工程研究所 | A kind of powdery paints and preparation method thereof |
-
2020
- 2020-04-17 CN CN202010305010.1A patent/CN111303736A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101955720A (en) * | 2010-05-12 | 2011-01-26 | 海尔集团公司 | Glittery metallic powder coating and preparation method thereof |
| KR101477852B1 (en) * | 2012-01-11 | 2014-12-30 | 조광페인트주식회사 | Thermosetting powder coating composition for roof rack of automobile and method of manufacturing the same |
| CN107936786A (en) * | 2017-12-20 | 2018-04-20 | 青岛豪元晟五金塑胶有限公司 | Bonding Pearlescent powder paint and its preparation process |
| CN108822700A (en) * | 2018-05-25 | 2018-11-16 | 安徽华辉塑业科技股份有限公司 | A kind of grey sand streak waterproof powdery paints applied on electric appliance |
| CN109988489A (en) * | 2019-04-15 | 2019-07-09 | 深圳市威富通讯技术有限公司 | Powdery paints and its preparation method and application |
| CN110317527A (en) * | 2019-07-30 | 2019-10-11 | 中国科学院过程工程研究所 | A kind of powdery paints and preparation method thereof |
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Application publication date: 20200619 |