CN112322154A - Modified polyester extinction powder coating and preparation method thereof - Google Patents
Modified polyester extinction powder coating and preparation method thereof Download PDFInfo
- Publication number
- CN112322154A CN112322154A CN202011313169.4A CN202011313169A CN112322154A CN 112322154 A CN112322154 A CN 112322154A CN 202011313169 A CN202011313169 A CN 202011313169A CN 112322154 A CN112322154 A CN 112322154A
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- China
- Prior art keywords
- solid
- modified polyester
- powder coating
- polyester resin
- calcium carbonate
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Classifications
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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
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/42—Gloss-reducing agents
-
- 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
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- 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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
Landscapes
- 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 belongs to the technical field of paint preparation, and particularly relates to a modified polyester matting powder paint and a preparation method thereof, wherein the paint comprises the following raw materials, by weight, 50-60% of solid modified polyester resin, 4-4.5% of curing agent triglycidyl isocyanurate, 5-10% of solid pigment, 2-3% of solid auxiliary agent and 25-35% of solid filler, wherein the solid modified polyester resin is obtained by modifying polyester resin with dimethyl adipate, and the solid filler comprises precipitated barium sulfate, 1500-mesh barium sulfate, 2000-mesh calcium carbonate and 800-mesh calcium carbonate.
Description
Technical Field
The invention belongs to the technical field of paint preparation, and particularly relates to a modified polyester extinction powder paint and a preparation method thereof.
Background
At present, the application of the powder coating in the outdoor aspect is very wide, and the variety is continuously increased. In general, expensive, luxurious decor requires a high gloss, while quiet, comfortable, elegant environments require a lower gloss finish. However, high gloss coatings can cause severe light pollution and eye damage, and also, consumer aesthetics are changing and are more prone to a leisure, comfortable living environment. Accordingly, matte powder coatings capable of producing a soft surface effect are increasingly used, the amount of semi-gloss and matte powder coatings having been statistically more than 30% of the total amount of powder coatings for both indoor and outdoor use.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a modified polyester extinction powder coating and a preparation method thereof, wherein the modified polyester extinction powder coating has low glossiness which can provide 10% of gloss, good storage stability, strong impact resistance, good adhesion, good smoothness and stable physical properties.
The invention relates to a modified polyester extinction powder coating which comprises, by weight, 50-60% of solid modified polyester resin, 4-4.5% of curing agent triglycidyl isocyanurate, 5-10% of solid pigment, 2-3% of solid auxiliary agent and 25-35% of solid filler, wherein the solid modified polyester resin is obtained by modifying polyester resin with dimethyl adipate, and the solid filler comprises precipitated barium sulfate, 1500-mesh barium sulfate, 2000-mesh calcium carbonate and 800-mesh calcium carbonate.
Preferably, the paint comprises the following raw material components, by weight, 60% of solid modified polyester resin, 4.5% of curing agent triglycidyl isocyanurate, 7.5% of solid pigment, 2% of solid auxiliary agent and 26% of solid filler.
Preferably, the solid auxiliary agent comprises a leveling agent, a defoaming agent, an anti-wear agent and a flatting agent.
Preferably, the solid pigment comprises one or more of titanium dioxide, carbon black, permanent yellow, iron red, phthalocyanine blue, permanent red and phthalocyanine green.
Preferably, the weight ratio of the precipitated barium sulfate, 1500-mesh barium sulfate, 2000-mesh calcium carbonate and 800-mesh calcium carbonate is 1:2:2: 1.
The invention provides a preparation method of a modified polyester extinction powder coating, which comprises the following steps,
1) after the materials are prepared, mixing and stirring the raw materials;
2) pouring the stirred raw materials into an extruder, controlling the temperature of the extruder at 100-120 ℃ to melt the raw materials, and then tabletting and crushing the raw materials;
3) and pouring the crushed materials into a powder shearing machine, and grinding into powder of 30-45 mu m to obtain the modified polyester extinction powder coating.
The stirring time was 5 min.
The temperature of the extruder was controlled at 115 ℃.
The particle size of the material crushed in the step 2) is 150-300 mu m.
The modified polyester resin has the beneficial effects that the modified polyester resin is modified by adding dimethyl adipate on the basis of common polyester resin, so that the physical properties of the modified polyester resin are changed, and more excellent and stable physical properties are obtained. The invention has good extinction performance, can provide gloss as low as 10%, has better smoothness and mechanical properties of a coating, has several baking stabilities, and can be applied to places needing good anti-yellowing capability.
According to the invention, the content of the polyester resin is increased, different types and meshes of products are selected, namely precipitated barium sulfate, 1500 meshes of barium sulfate, 2000 meshes of calcium carbonate and 800 meshes of calcium carbonate are selected as fillers, and compared with the method of selecting single meshes of barium sulfate or calcium carbonate, the product obtained by the method has better adhesive force and storage stability.
Detailed Description
The various chemicals and reagents used in the examples of the present invention were all commercially available.
Example 1
The modified polyester extinction powder coating comprises the following raw material components, by weight, 60% of solid modified polyester resin, 4.5% of curing agent triglycidyl isocyanurate, 7.5% of solid pigment, 2% of solid auxiliary agent and 26% of solid filler, wherein the solid modified polyester resin is obtained by modifying polyester resin with dimethyl adipate, and the solid filler comprises precipitated barium sulfate, 1500-mesh barium sulfate, 2000-mesh calcium carbonate and 800-mesh calcium carbonate in a weight ratio of 1:2:2: 1.
The solid auxiliary agent comprises a leveling agent, a defoaming agent, an anti-wear agent and a delustering agent.
The solid pigment is titanium dioxide.
The invention provides a preparation method of a modified polyester extinction powder coating, which comprises the following steps,
1) after the materials are prepared, mixing the raw materials, and stirring for 5 min;
2) pouring the stirred raw materials into an extruder, controlling the temperature of the extruder at 115 ℃ to melt the raw materials, and then tabletting and crushing the raw materials, wherein the particle size of the crushed materials is 150-300 mu m;
3) and pouring the crushed materials into a powder shearing machine, and grinding into powder of 30-45 mu m to obtain the modified polyester extinction powder coating.
Comparative example 1
The difference between comparative example 1 and example 1 is that the polyester resin is a general unmodified polyester resin and the solid filler is 800 mesh barium sulfate. The rest is the same as in example 1.
The powder coatings obtained in example 1 and comparative example 1 were compared to obtain a table of performance test results as shown in table 1.
Table 1 table of performance test results
As can be seen from the analysis of Table 1 above, the product of example 1 had a lower gloss and was significantly superior to that of comparative example 1 in storage stability.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. The modified polyester extinction powder coating is characterized by comprising the following raw materials, by weight, 50-60% of solid modified polyester resin, 4-4.5% of curing agent triglycidyl isocyanurate, 5-10% of solid pigment, 2-3% of solid auxiliary agent and 25-35% of solid filler, wherein the solid modified polyester resin is obtained by modifying polyester resin with dimethyl adipate, and the solid filler comprises precipitated barium sulfate, 1500-mesh barium sulfate, 2000-mesh calcium carbonate and 800-mesh calcium carbonate.
2. The modified polyester extinction powder coating of claim 1, which is characterized by comprising the following raw material components, by weight, 60% of solid modified polyester resin, 4.5% of curing agent triglycidyl isocyanurate, 7.5% of solid pigment, 2% of solid auxiliary agent and 26% of solid filler.
3. The modified polyester matting powder coating according to claim 1 wherein said solid auxiliaries include levelling agents, defoamers, anti-wear agents and matting agents.
4. The modified polyester matting powder coating according to claim 1 wherein the solid pigment comprises one or more of titanium dioxide, carbon black, permanent yellow, iron red, phthalocyanine blue, permanent red, phthalocyanine green.
5. A modified polyester matting powder coating according to any one of claims 1 to 4 characterised in that the weight ratio of precipitated barium sulphate, 1500 mesh barium sulphate, 2000 mesh calcium carbonate and 800 mesh calcium carbonate is 1:2:2: 1.
6. A process for the preparation of a modified polyester matting powder coating according to any one of claims 1 to 5 comprising the steps of,
1) after the materials are prepared, mixing and stirring the raw materials;
2) pouring the stirred raw materials into an extruder, controlling the temperature of the extruder at 100-120 ℃ to melt the raw materials, and then tabletting and crushing the raw materials;
3) and pouring the crushed materials into a powder shearing machine, and grinding into powder of 30-45 mu m to obtain the modified polyester extinction powder coating.
7. The process according to claim 6, wherein the stirring is carried out for 5 min.
8. The process according to claim 6 or 7, wherein the temperature of the extruder is controlled to 115 ℃.
9. The process according to claim 6 or 7, wherein the particle size of the pulverized material obtained in step 2) is 150-300 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011313169.4A CN112322154A (en) | 2020-11-20 | 2020-11-20 | Modified polyester extinction powder coating and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011313169.4A CN112322154A (en) | 2020-11-20 | 2020-11-20 | Modified polyester extinction powder coating and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN112322154A true CN112322154A (en) | 2021-02-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011313169.4A Pending CN112322154A (en) | 2020-11-20 | 2020-11-20 | Modified polyester extinction powder coating and preparation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1462782A (en) * | 2003-06-02 | 2003-12-24 | 四川大学 | Weather-resistant type coating material of polyester powder modified by inorganic nano composite material |
| CN103265874A (en) * | 2013-05-23 | 2013-08-28 | 浙江超浪新材料有限公司 | High-toughness powder coating specially used for security door |
| CN107880743A (en) * | 2017-11-24 | 2018-04-06 | 桂林市和鑫防水装饰材料有限公司 | High-performance polyester toner coating and preparation method thereof |
| CN109735214A (en) * | 2019-01-28 | 2019-05-10 | 天津盛达新材料有限公司 | A kind of matt weather-resistance powder coatings and preparation method |
| CN110204702A (en) * | 2019-07-08 | 2019-09-06 | 黄山华惠科技有限公司 | A kind of hydroxy polyester resin and preparation method based on the preparation of TGIC byproduct |
-
2020
- 2020-11-20 CN CN202011313169.4A patent/CN112322154A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1462782A (en) * | 2003-06-02 | 2003-12-24 | 四川大学 | Weather-resistant type coating material of polyester powder modified by inorganic nano composite material |
| CN103265874A (en) * | 2013-05-23 | 2013-08-28 | 浙江超浪新材料有限公司 | High-toughness powder coating specially used for security door |
| CN107880743A (en) * | 2017-11-24 | 2018-04-06 | 桂林市和鑫防水装饰材料有限公司 | High-performance polyester toner coating and preparation method thereof |
| CN109735214A (en) * | 2019-01-28 | 2019-05-10 | 天津盛达新材料有限公司 | A kind of matt weather-resistance powder coatings and preparation method |
| CN110204702A (en) * | 2019-07-08 | 2019-09-06 | 黄山华惠科技有限公司 | A kind of hydroxy polyester resin and preparation method based on the preparation of TGIC byproduct |
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Application publication date: 20210205 |
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