CN112480794A - Mixed extinction powder coating and preparation method thereof - Google Patents
Mixed extinction powder coating and preparation method thereof Download PDFInfo
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- CN112480794A CN112480794A CN202011395547.8A CN202011395547A CN112480794A CN 112480794 A CN112480794 A CN 112480794A CN 202011395547 A CN202011395547 A CN 202011395547A CN 112480794 A CN112480794 A CN 112480794A
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- 238000000576 coating method Methods 0.000 title claims abstract description 59
- 239000011248 coating agent Substances 0.000 title claims abstract description 58
- 230000008033 biological extinction Effects 0.000 title claims abstract description 47
- 239000000843 powder Substances 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title abstract description 14
- 229920001225 polyester resin Polymers 0.000 claims abstract description 20
- 239000004645 polyester resin Substances 0.000 claims abstract description 20
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 18
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 18
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims abstract description 15
- 125000000524 functional group Chemical group 0.000 claims abstract description 10
- 239000003822 epoxy resin Substances 0.000 claims abstract description 8
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 8
- 239000000945 filler Substances 0.000 claims abstract description 7
- 239000002253 acid Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 36
- 238000002156 mixing Methods 0.000 claims description 18
- 238000001125 extrusion Methods 0.000 claims description 14
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical group [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 7
- 239000010960 cold rolled steel Substances 0.000 claims description 6
- 239000000155 melt Substances 0.000 claims description 6
- 239000000178 monomer Substances 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 3
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 2
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 claims description 2
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims description 2
- 239000011976 maleic acid Substances 0.000 claims description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 claims 1
- 239000002671 adjuvant Substances 0.000 claims 1
- 229920001577 copolymer Polymers 0.000 claims 1
- 239000003623 enhancer Substances 0.000 claims 1
- 229920002554 vinyl polymer Polymers 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 abstract description 20
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 14
- 239000004408 titanium dioxide Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 239000003513 alkali Substances 0.000 abstract description 2
- 239000012752 auxiliary agent Substances 0.000 abstract description 2
- 239000002904 solvent Substances 0.000 abstract description 2
- ISAOCJYIOMOJEB-UHFFFAOYSA-N benzoin Chemical compound C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1 ISAOCJYIOMOJEB-UHFFFAOYSA-N 0.000 description 10
- 244000028419 Styrax benzoin Species 0.000 description 5
- 235000000126 Styrax benzoin Nutrition 0.000 description 5
- 235000008411 Sumatra benzointree Nutrition 0.000 description 5
- 229960002130 benzoin Drugs 0.000 description 5
- 235000019382 gum benzoic Nutrition 0.000 description 5
- 239000004593 Epoxy Substances 0.000 description 4
- 239000006224 matting agent Substances 0.000 description 4
- 229920000728 polyester Polymers 0.000 description 4
- 238000011056 performance test Methods 0.000 description 3
- 230000036632 reaction speed Effects 0.000 description 3
- 230000009257 reactivity Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000002585 base Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 235000020610 powder formula Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- 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
-
- 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
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 provides a mixed extinction powder coating and a preparation method thereof. The coating comprises 28 to 39 weight percent of polyester resin, 23 to 34 weight percent of epoxy resin, 20 to 30 weight percent of titanium dioxide, 10 to 25 weight percent of filler, 1 to 10 weight percent of acrylic resin with carboxyl functional groups, 0.5 to 2 weight percent of flatting agent and 2 to 3 weight percent of other auxiliary agents. The acrylic resin with carboxyl functional groups is added into the mixed extinction powder coating, the acrylic resin can endow the coating with a fine extinction plane effect, the selection range of the extinction agent to the polyester resin is increased, and the prepared coating has a solvent-resistant, acid-resistant and alkali-resistant high-hardness coating. Furthermore, the preparation method of the mixed extinction powder coating is simple and easy to implement, green and environment-friendly, and is an environment-friendly preparation process.
Description
Technical Field
The application relates to a mixed extinction powder coating, in particular to a mixed extinction powder coating and a preparation method thereof, belonging to the field of coatings.
Background
The matting effect of the matting agent is mainly caused by poor compatibility between the matting agent and the film-forming material, and is mainly a physical effect. The extinction principle of extinction curing agent is that two reaction systems of curing agent with different reactivity in powder coating formula are utilized, one of the reaction systems has high curing reactivity and high reaction speed, the other reaction system has low curing reactivity and low reaction speed, and the reaction speed difference between the two film-forming material reaction systems and the compatibility difference between the two products form an extinction coating film with microscopically rough surface and diffuse reflection and scattering of light and poor reflection. In the curing reaction, two reaction systems generate interpenetrating network structures, so that the film coating generates extinction effect. In the prior art, the extinction effect of the extinction agent in the extinction powder coating is greatly influenced by the variety of the polyester resin, so the use of the variety of the polyester is limited, and even if a polyester resin which is matched with the extinction agent is selected, the gloss fluctuation of a coating film is large in the process of actual production in a test due to the fluctuation of the value of the polyester resin, and the quality of the produced extinction powder is not stable. Therefore, it is an urgent problem to provide a matting powder coating which expands the variety selectivity of polyester and has stable film gloss.
Disclosure of Invention
The invention aims to provide a mixed extinction powder coating and a preparation method thereof, which overcome the defects of limitation on the variety selectivity of polyester and unstable film gloss in the prior art.
In order to achieve the purpose, the technical scheme adopted by the invention comprises the following steps:
the mixed extinction powder coating comprises the following components in percentage by weight:
optionally, the upper limit of the mass fraction of the polyester resin is selected from 30 wt%, 31 wt%, 32 wt%, 33 wt%, 340 wt%, 35 wt%, 36 wt%, 37 wt%, 38 wt%, 39 wt%; the lower limit of the mass fraction of the polyester resin is selected from the group consisting of 28 wt%, 30 wt%, 31 wt%, 32 wt%, 33 wt%, 340 wt%, 35 wt%, 36 wt%, 37 wt%, 38 wt%.
Optionally, the upper mass fraction limit of the epoxy resin is selected from 24 wt%, 25 wt%, 26 wt%, 27 wt%, 28 wt%, 29 wt%, 30 wt%, 31 wt%, 32 wt%, 33 wt%, 34 wt%; the lower limit of the mass fraction of the epoxy resin is selected from 23 wt%, 24 wt%, 25 wt%, 26 wt%, 27 wt%, 28 wt%, 29 wt%, 30 wt%, 31 wt%, 32 wt%, 33 wt%, 34 wt%.
Optionally, the upper limit of the mass fraction of the titanium dioxide is selected from 21 wt%, 22 wt%, 23 wt%, 24 wt%, 25 wt%, 26 wt%, 27 wt%, 28 wt%, 29 wt%, 30 wt%; the lower limit of the mass fraction of the titanium dioxide is selected from 20 wt%, 21 wt%, 22 wt%, 23 wt%, 24 wt%, 25 wt%, 26 wt%, 27 wt%, 28 wt% and 29 wt%.
Optionally, the upper mass fraction limit of the filler is selected from 15 wt%, 20 wt%, 25 wt%; the lower limit of the mass fraction of the filler is selected from 10 wt%, 15 wt%, 20 wt%.
Optionally, the upper mass fraction limit of the matting agent is selected from 0.8 wt%, 1.0 wt%, 1.2 wt%, 1.4 wt%, 1.6 wt%, 1.8 wt%, 2.0 wt%; the lower limit of the mass fraction of the flatting agent is selected from 0.5 wt%, 0.8 wt%, 1.0 wt%, 1.2 wt%, 1.4 wt%, 1.6 wt%, 1.8 wt%.
Optionally, the acrylic resin with carboxyl functional groups is obtained by copolymerizing a carboxyl-containing monomer and a (meth) acrylic acid monomer.
Optionally, the carboxyl group-containing monomer is selected from at least one of acrylic resin (meth) acrylic acid and maleic acid.
Alternatively, the acrylic resin with carboxyl functional groups is reacted with an oxygen-containing compound to produce a high hardness coating.
Optionally, the oxygen-containing compound is selected from epoxy resins.
Alternatively, the polyester resin has an acid value in the range of 30 to 75 mgKOH/g.
Optionally, the polyester resin is selected from at least one of model numbers SJ3B, SJ6408 and SJ6B of new material ltd.
Optionally, the auxiliary agent is selected from at least one of wear-resistant wax and an electric conduction agent.
Optionally, the coating further comprises a filler.
Optionally, the filler is selected from barium sulfate.
The preparation method of the mixed type extinction powder coating comprises the following steps:
(1) providing each component weighed according to a proportion as a processing material;
(2) putting the processed materials into a high-speed mixing tank, and mixing the materials at high speed for 3-6 min;
(3) and carrying out melt extrusion treatment on the mixed materials, and then carrying out tabletting, coarse crushing and ACM fine crushing and grading treatment to obtain the mixed extinction powder coating.
Optionally, the melt extrusion process is: and extruding the mixed material by adopting a double screw.
Alternatively, the extrusion treatment is performed using an extruder.
Optionally, the temperature of the front section of the extruder treatment is 95-105 ℃.
Optionally, the temperature of the rear section of the extruder treatment is 110-130 ℃.
Optionally, the twin-screw speed is 35 hZ-45 hZ.
Optionally, the rotating speed of the high-speed mixing tank is 200 r/min.
The mixed extinction powder coating is applied to cold-rolled steel plates.
The polyester resin and the epoxy resin in the present application are film-forming substances.
The acrylic resins in this application impart a lower gloss to the coating.
The matting agents in the present application impart a lower gloss to the coating.
The use of the leveling agent, the brightener and the benzoin in the embodiment of the application can obtain the flat and smooth appearance of the coating, and avoid the defects of fine pinholes or pig hair holes and the like in the coating.
Compared with the prior art, the invention has the advantages that: the acrylic resin with carboxyl functional groups is added into the mixed extinction powder coating, the acrylic resin can endow the coating with a fine extinction plane effect, the selection range of the extinction agent to the polyester resin is increased, and the prepared coating has a solvent-resistant, acid-resistant and alkali-resistant high-hardness coating. Furthermore, the preparation method of the mixed extinction powder coating is simple and easy to implement, green and environment-friendly, and is an environment-friendly preparation process.
Detailed Description
In view of the deficiencies in the prior art, the inventors of the present invention have made extensive studies and extensive practices to provide technical solutions of the present invention. The technical solution, its implementation and principles, etc. will be further explained as follows.
The technical solution of the present invention is further explained below with reference to several examples.
Epoxy resin: e-12, Meijia New materials Ltd, Anhui
Polyester resin: SJ3B, SJ6408, SJ6B, Anhui Huangshan Shenjian New materials Co., Ltd
Acrylic resin: RB-8160, Wuhan Rong Bang Huatai science and technology Co., Ltd
Extinction curing agent: x-201, Wuhan Rong Bangtai science and technology Co., Ltd
In the examples 1-3, 3 kinds of polyester resins with different acid values are selected as experimental objects, and for the convenience of coating performance test and comparison, the same type of solid epoxy resin is used as a base material.
The other components are commercially available.
Example 1
The components are mixed according to the mass ratio
Polyester resin model SJ3B 280g, epoxy E-12340 g, flatting agent 10g, brightener 10g, benzoin 4g, titanium dioxide 220g, barium sulfate 200g, acrylic resin RB-8160200 g with carboxyl functional groups, extinction curing agent 10g and PE wax 5 g.
The preparation method of the mixed type extinction powder coating comprises the following steps:
(1) providing each component weighed according to a proportion as a processing material;
(2) putting the processed materials into a high-speed mixing tank, and mixing the materials at high speed for 3-6 min;
(3) and carrying out melt extrusion treatment on the mixed materials, and then carrying out tabletting, coarse crushing and ACM fine crushing and grading treatment to obtain the mixed extinction powder coating.
The melt extrusion treatment process comprises the following steps: and extruding the mixed material by adopting a double screw.
And (4) extruding by using an extruder.
The temperature of the front section treated by the extruder is 95-105 ℃.
The temperature of the rear section of the extruder is 110-130 ℃.
The rotating speed of the twin-screw is 35 hZ-45 hZ.
The rotating speed of the high-speed mixing tank is 200 r/min.
Example 2
The components are mixed according to the mass ratio
Polyester resin model SJ3B 335g, epoxy E-12285 g, leveling agent 10g, brightener 10g, benzoin 4g, titanium dioxide 220g, barium sulfate 200g, acrylic resin RB-8160200 g with carboxyl functional groups, extinction curing agent 10g and PE wax 5 g.
The preparation method of the mixed type extinction powder coating comprises the following steps:
(1) providing each component weighed according to a proportion as a processing material;
(2) putting the processed materials into a high-speed mixing tank, and mixing the materials at high speed for 3-6 min;
(3) and carrying out melt extrusion treatment on the mixed materials, and then carrying out tabletting, coarse crushing and ACM fine crushing and grading treatment to obtain the mixed extinction powder coating.
The melt extrusion treatment process comprises the following steps: and extruding the mixed material by adopting a double screw.
And (4) extruding by using an extruder.
The temperature of the front section treated by the extruder is 95-105 ℃.
The temperature of the rear section of the extruder is 110-130 ℃.
The rotating speed of the twin-screw is 35 hZ-45 hZ.
The rotating speed of the high-speed mixing tank is 200 r/min.
Example 2
The components are mixed according to the mass ratio
Polyester resin model SJ3B 335g, epoxy E-12285 g, leveling agent 10g, brightener 10g, benzoin 4g, titanium dioxide 220g, barium sulfate 200g, acrylic resin RB-816050 g with carboxyl functional groups, extinction curing agent 10g and PE wax 5 g.
The preparation method of the mixed type extinction powder coating comprises the following steps:
(1) providing each component weighed according to a proportion as a processing material;
(2) putting the processed materials into a high-speed mixing tank, and mixing the materials at high speed for 3-6 min;
(3) and carrying out melt extrusion treatment on the mixed materials, and then carrying out tabletting, coarse crushing and ACM fine crushing and grading treatment to obtain the mixed extinction powder coating.
The melt extrusion treatment process comprises the following steps: and extruding the mixed material by adopting a double screw.
And (4) extruding by using an extruder.
The temperature of the front section treated by the extruder is 95-105 ℃.
The temperature of the rear section of the extruder is 110-130 ℃.
The rotating speed of the twin-screw is 35 hZ-45 hZ.
The rotating speed of the high-speed mixing tank is 200 r/min.
Example 3
The components are mixed according to the mass ratio
Polyester resin model SJ3B 390g, epoxy E-12230 g, leveling agent 10g, brightener 10g, benzoin 4g, titanium dioxide 220g, barium sulfate 200g, acrylic resin RB-816050 g with carboxyl functional groups, extinction curing agent 10g and PE wax 5 g.
The preparation method of the mixed type extinction powder coating comprises the following steps:
(1) providing each component weighed according to a proportion as a processing material;
(2) putting the processed materials into a high-speed mixing tank, and mixing the materials at high speed for 3-6 min;
(3) and carrying out melt extrusion treatment on the mixed materials, and then carrying out tabletting, coarse crushing and ACM fine crushing and grading treatment to obtain the mixed extinction powder coating.
The melt extrusion treatment process comprises the following steps: and extruding the mixed material by adopting a double screw.
And (4) extruding by using an extruder.
The temperature of the front section treated by the extruder is 95-105 ℃.
The temperature of the rear section of the extruder is 110-130 ℃.
The rotating speed of the twin-screw is 35 hZ-45 hZ.
The rotating speed of the high-speed mixing tank is 200 r/min.
The mixed extinction powder coating prepared in the embodiment 1 to the embodiment 3 is used for a cold-rolled steel plate, specifically, after the cold-rolled steel plate with the thickness of 150mm multiplied by 70mm multiplied by 0.5mm is subjected to oil removal, rust removal and phosphating treatment, a high-voltage electrostatic spray gun is adopted for spraying the plate, the electrostatic pressure of the spraying is 60-80kv, the conveying pressure is 0.4-0.6Mpa, the curing condition is 200 ℃ and the time is 10min, then the test plate is taken out and cooled to the room temperature, and finally, the performance test is carried out on the coating film, and the results are shown in the table 1.
TABLE 1 Mixed matting powder coating for cold rolled steel sheet Performance test
As is clear from Table 1, when the hybrid matte powder coating of the present application is applied to cold-rolled steel sheets, the gloss of the films does not change greatly when polyester resins having different acid values are used. The method for preparing the extinction powder coating by adopting the extinction of the acrylic resin has low requirement on the matching property of the polyester and the extinction agent, and can greatly improve the flexibility of the extinction powder formula.
It should be understood that the above-mentioned embodiments are merely illustrative of the technical concepts and features of the present invention, which are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and therefore, the protection scope of the present invention is not limited thereby. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. The mixed extinction powder coating is characterized by comprising the following components in percentage by weight:
2. the hybrid matted powder coating of claim 1, wherein the carboxyl functional acrylic resin is a copolymer of a carboxyl-containing monomer and a (meth) acrylic acid vinyl monomer;
preferably, the carboxyl group-containing monomer is selected from at least one of acrylic resin (meth) acrylic acid and maleic acid;
preferably, the acrylic resin with carboxyl functional groups reacts with an oxygen-containing compound to produce a high-hardness coating;
preferably, the oxygen-containing compound is selected from epoxy resins.
3. The hybrid matted powder coating of claim 1, wherein the polyester resin has an acid value ranging from 30 to 75 mgKOH/g.
4. The hybrid matted powder coating of claim 1, wherein the polyester resin is selected from at least one of the new Anhui Huangshan Shenjian materials, Inc. model Nos. SJ3B, SJ6408, and SJ 6B.
5. The hybrid matted powder coating of claim 1, wherein the adjuvant is selected from at least one of an abrasion resistant wax, a charge enhancer.
6. The hybrid matted powder coating of claim 1, wherein the coating further comprises a filler;
preferably, the filler is selected from barium sulphate.
7. A method of preparing a hybrid matte powder coating where required of any of claims 1-6, comprising the steps of:
(1) providing each component weighed according to a proportion as a processing material;
(2) putting the processed materials into a high-speed mixing tank, and mixing the materials at high speed for 3-6 min;
(3) and carrying out melt extrusion treatment on the mixed materials, and then carrying out tabletting, coarse crushing and ACM fine crushing and grading treatment to obtain the mixed extinction powder coating.
8. The method for preparing the hybrid matte powder coating according to claim 7, wherein the melt extrusion process comprises: extruding the mixed material by adopting a double screw;
preferably, an extruder is used for extrusion treatment;
preferably, the temperature of the front section of the extruder treatment is 95-105 ℃;
preferably, the temperature of the rear section of the extruder treatment is 110-130 ℃;
preferably, the rotating speed of the twin screw is 35 hZ-45 hZ.
9. The method of claim 7 wherein the high speed mixing bowl is rotated at a speed of 200 rpm.
10. Use of the hybrid matte powder coating of any one of claims 1-6 or the hybrid matte powder coating made according to any one of claims 7-9 in cold rolled steel sheets.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011395547.8A CN112480794A (en) | 2020-12-03 | 2020-12-03 | Mixed extinction powder coating and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115232540A (en) * | 2022-08-03 | 2022-10-25 | 珑彩环保材料(苏州)有限公司 | High-imitation electroplated silver metal powder coating and preparation method and application thereof |
| CN120137500A (en) * | 2025-04-25 | 2025-06-13 | 莱阳优力美色彩科技有限公司 | Skin-feel matte powder coating based on resin reaction kinetics regulation and preparation method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108727530A (en) * | 2017-04-21 | 2018-11-02 | 武汉荣邦华泰科技有限公司 | High acid value carboxy acrylic matting resin and epoxy polyester type powdery paints containing it |
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2020
- 2020-12-03 CN CN202011395547.8A patent/CN112480794A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108727530A (en) * | 2017-04-21 | 2018-11-02 | 武汉荣邦华泰科技有限公司 | High acid value carboxy acrylic matting resin and epoxy polyester type powdery paints containing it |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115232540A (en) * | 2022-08-03 | 2022-10-25 | 珑彩环保材料(苏州)有限公司 | High-imitation electroplated silver metal powder coating and preparation method and application thereof |
| CN120137500A (en) * | 2025-04-25 | 2025-06-13 | 莱阳优力美色彩科技有限公司 | Skin-feel matte powder coating based on resin reaction kinetics regulation and preparation method |
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