CN116218380A - Powder coating and preparation method thereof - Google Patents
Powder coating and preparation method thereof Download PDFInfo
- Publication number
- CN116218380A CN116218380A CN202310367498.4A CN202310367498A CN116218380A CN 116218380 A CN116218380 A CN 116218380A CN 202310367498 A CN202310367498 A CN 202310367498A CN 116218380 A CN116218380 A CN 116218380A
- Authority
- CN
- China
- Prior art keywords
- parts
- defoamer
- powder coating
- epoxy resin
- coating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 44
- 239000011248 coating agent Substances 0.000 title claims abstract description 42
- 239000000843 powder Substances 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title abstract description 5
- 239000013530 defoamer Substances 0.000 claims abstract description 24
- 239000003822 epoxy resin Substances 0.000 claims abstract description 24
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 24
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims abstract description 16
- 238000000227 grinding Methods 0.000 claims abstract description 13
- 229920005989 resin Polymers 0.000 claims abstract description 12
- 239000011347 resin Substances 0.000 claims abstract description 12
- 239000000049 pigment Substances 0.000 claims abstract description 9
- 239000006229 carbon black Substances 0.000 claims abstract description 8
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 8
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 9
- 239000003623 enhancer Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 238000010298 pulverizing process Methods 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 6
- 230000037303 wrinkles Effects 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- HBGPNLPABVUVKZ-POTXQNELSA-N (1r,3as,4s,5ar,5br,7r,7ar,11ar,11br,13as,13br)-4,7-dihydroxy-3a,5a,5b,8,8,11a-hexamethyl-1-prop-1-en-2-yl-2,3,4,5,6,7,7a,10,11,11b,12,13,13a,13b-tetradecahydro-1h-cyclopenta[a]chrysen-9-one Chemical compound C([C@@]12C)CC(=O)C(C)(C)[C@@H]1[C@H](O)C[C@]([C@]1(C)C[C@@H]3O)(C)[C@@H]2CC[C@H]1[C@@H]1[C@]3(C)CC[C@H]1C(=C)C HBGPNLPABVUVKZ-POTXQNELSA-N 0.000 claims description 2
- PFRGGOIBYLYVKM-UHFFFAOYSA-N 15alpha-hydroxylup-20(29)-en-3-one Natural products CC(=C)C1CCC2(C)CC(O)C3(C)C(CCC4C5(C)CCC(=O)C(C)(C)C5CCC34C)C12 PFRGGOIBYLYVKM-UHFFFAOYSA-N 0.000 claims description 2
- SOKRNBGSNZXYIO-UHFFFAOYSA-N Resinone Natural products CC(=C)C1CCC2(C)C(O)CC3(C)C(CCC4C5(C)CCC(=O)C(C)(C)C5CCC34C)C12 SOKRNBGSNZXYIO-UHFFFAOYSA-N 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 claims 2
- 230000001070 adhesive effect Effects 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000005507 spraying Methods 0.000 abstract description 6
- 239000003973 paint Substances 0.000 description 5
- 239000002904 solvent Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002612 dispersion medium Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin 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
- C09D201/00—Coating compositions based on unspecified macromolecular compounds
-
- 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
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The application discloses a powder coating and a preparation method thereof in the technical field of coating processing, wherein the powder coating comprises, by weight, 120.0-128.0 parts of epoxy resin I, 29.0-31.0 parts of epoxy resin II, 220.0-230.0 parts of mixed resin, 140.0-145.0 parts of barium sulfate, 1.4-1.6 parts of defoamer I, 1.01-1.10 parts of defoamer II, 0.08-0.2 parts of wrinkling agent, 0.4-0.6 parts of zinc stearate, 2.5-2.8 parts of carbon black and 3.4-4.0 parts of pigment. By adopting the powder coating in the scheme, the one-time powdering rate can reach more than 70%, 4-6 guns are needed for conventional spraying of the coating with the size of 80 microns, and only 3 guns are needed for spraying of the coating with the size of 80 microns, so that the consumption of the coating is reduced, the coating is saved, the operation time is shortened, and the spraying efficiency is improved. The powdering rate of the powder coating is improved by more than 10 percent.
Description
Technical Field
The invention relates to the technical field of paint processing, in particular to a powder paint and a preparation method thereof.
Background
The powder coating is a solid powder synthetic resin coating composed of solid resin, pigment, filler, auxiliary agent and the like. Unlike common solvent-based paint and water-based paint, its dispersion medium is not solvent and water, but air. It has the characteristics of no solvent pollution, 100% film formation and low energy consumption. Powder coatings are quite different from general coatings in form of fine powder. Since no solvent is used, it is called a powder coating. The powder coating is mainly characterized in that: has the characteristics of innocuity, high efficiency, resource conservation and environmental protection.
However, the existing powder coating has low powder coating rate, and coating personnel need to spray for many times, so that more powder coating is wasted, and labor intensity is increased. Meanwhile, the problem of nonuniform powdering can be caused by low powdering rate, so that coating defects are difficult to cover after the powder coating is cured. Therefore, there is a need for a powder coating and a method for preparing the same that can increase the powdering rate.
Disclosure of Invention
The invention aims to provide a powder coating and a preparation method thereof, so as to improve the powdering rate of the powder coating.
In order to solve the technical problems, the invention provides the following technical scheme: the powder coating comprises, by weight, 120.0-128.0 parts of epoxy resin I, 29.0-31.0 parts of epoxy resin II, 220.0-230.0 parts of mixed resin, 140.0-145.0 parts of barium sulfate, 1.4-1.6 parts of defoamer I, 1.01-1.10 parts of defoamer II, 0.08-0.2 parts of wrinkling agent, 0.4-0.6 parts of zinc stearate, 2.5-2.8 parts of carbon black and 3.4-4.0 parts of pigment.
A method for preparing a powder coating, comprising the steps of:
step one, coarse mixing: putting the raw materials into a mixer according to parts by weight for mixing until the raw materials are uniformly mixed;
step two, extruding: adding the raw materials subjected to coarse mixing in the first step into an extruder for extrusion, wherein the rotating speed of a screw rod is 30-36 during extrusion;
step three, crushing: crushing the extruded raw materials in the second step into slices and cooling to room temperature;
grinding: and (3) adding the raw material slices in the step (III) into a pulverizer for pulverizing, wherein a friction enhancer is added into the pulverizer during pulverizing, and the mass of the friction enhancer is 0.2-0.4% of the total mass of the rest raw materials.
Further, the first epoxy resin is epoxy resin E-12, the second epoxy resin is epoxy resin E-20, the first defoamer is defoamer 2999, and the second defoamer is defoamer 961.
Further, the paint comprises, by weight, 128.0 parts of epoxy resin one, 31.0 parts of epoxy resin two, 228.0 parts of mixed resin, 143.0 parts of barium sulfate, 1.6 parts of defoamer one, 1.08 parts of defoamer two, 0.1 part of wrinkle agent, 0.5 part of zinc stearate, 2.65 parts of carbon black and 3.4 parts of pigment.
Further, in the grinding in the fourth step, D10 is required to be 11, D50 is required to be 36, and D90 is required to be 68.
Further, the friction enhancer is RPCOAT Z2 powder resin.
The invention has the beneficial effects that:
by adopting the powder coating in the scheme, the one-time powdering rate can reach more than 70%, 4-6 guns are needed for conventional spraying of the coating with the size of 80 microns, and only 3 guns are needed for spraying of the coating with the size of 80 microns, so that the consumption of the coating is reduced, the coating is saved, the operation time is shortened, and the spraying efficiency is improved. The powdering rate of the powder coating is improved by more than 10 percent.
Detailed Description
Example 1
The powder coating comprises, by weight, 128.0 parts of epoxy resin E-12, 31.0 parts of epoxy resin E-20, 228.0 parts of mixed resin, 143.0 parts of barium sulfate, 2999.6 parts of defoamer, 961.08 parts of defoamer, 0.1 part of wrinkling agent, 0.5 part of zinc stearate, 2.65 parts of carbon black and 3.4 parts of pigment.
Example 2
The powder coating comprises, by weight, 120.0 parts of epoxy resin E-12, 29.0 parts of epoxy resin E-20, 220.0 parts of mixed resin, 140.0 parts of barium sulfate, 2999.4 parts of defoamer, 961.01 parts of defoamer, 0.08 part of wrinkling agent, 0.4 part of zinc stearate, 2.5 parts of carbon black and 4.0 parts of pigment.
Example 3
The powder coating comprises, by weight, 125.0 parts of epoxy resin E-12, 30.0 parts of epoxy resin E-20, 230.0 parts of mixed resin, 145.0 parts of barium sulfate, 2999.5 parts of defoamer, 961.10 parts of defoamer, 0.2 part of wrinkle agent, 0.6 part of zinc stearate, 2.8 parts of carbon black and 3.8 parts of pigment.
A method for preparing a powder coating in examples 1 to 3: the method comprises the following steps:
step one, coarse mixing: putting the raw materials into a mixer according to parts by weight for mixing until the raw materials are uniformly mixed;
step two, extruding: adding the raw materials subjected to coarse mixing in the first step into an extruder for extrusion, wherein the rotating speed of a screw rod is 30-36 during extrusion;
step three, crushing: crushing the extruded raw materials in the second step into slices and cooling to room temperature;
grinding: and (3) adding the raw material slices in the step three into a pulverizer for pulverizing, wherein a friction enhancer (RPCOAT Z2 powder resin) is added into the pulverizer during pulverizing, the mass of the friction enhancer is 0.2-0.4% of the total mass of the rest raw materials, and the powder is required to have D10 of 11, D50 of 36 and D90 of 68 during pulverizing.
Claims (6)
1. A powder coating, characterized by: the adhesive comprises, by weight, 120.0-128.0 parts of epoxy resin I, 29.0-31.0 parts of epoxy resin II, 220.0-230.0 parts of mixed resin, 140.0-145.0 parts of barium sulfate, 1.4-1.6 parts of defoamer I, 1.01-1.10 parts of defoamer II, 0.08-0.2 parts of wrinkle agent, 0.4-0.6 parts of zinc stearate, 2.5-2.8 parts of carbon black and 3.4-4.0 parts of pigment.
2. A process for preparing a powder coating as claimed in claim 1, wherein: the method comprises the following steps:
step one, coarse mixing: putting the raw materials into a mixer according to parts by weight for mixing until the raw materials are uniformly mixed;
step two, extruding: adding the raw materials subjected to coarse mixing in the first step into an extruder for extrusion, wherein the rotating speed of a screw rod is 30-36 during extrusion;
step three, crushing: crushing the extruded raw materials in the second step into slices and cooling to room temperature;
grinding: and (3) adding the raw material slices in the step (III) into a pulverizer for pulverizing, wherein a friction enhancer is added into the pulverizer during pulverizing, and the mass of the friction enhancer is 0.2-0.4% of the total mass of the rest raw materials.
3. A powder coating as claimed in claim 1, wherein: the first epoxy resin is epoxy resin E-12, the second epoxy resin is epoxy resin E-20, the first defoamer is defoamer 2999, and the second defoamer is defoamer 961.
4. A powder coating as claimed in claim 3, wherein: the adhesive comprises, by weight, 128.0 parts of epoxy resin one, 31.0 parts of epoxy resin two, 228.0 parts of mixed resin, 143.0 parts of barium sulfate, 1.6 parts of defoamer one, 1.08 parts of defoamer two, 0.1 part of wrinkle agent, 0.5 part of zinc stearate, 2.65 parts of carbon black and 3.4 parts of pigment.
5. A method of preparing a powder coating as claimed in claim 2, wherein: the grinding in the fourth step is required to have D10 of 11, D50 of 36 and D90 of 68.
6. The method for preparing a powder coating according to claim 5, wherein: the friction enhancer is RPCOAT Z2 powder resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310367498.4A CN116218380A (en) | 2023-04-07 | 2023-04-07 | Powder coating and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310367498.4A CN116218380A (en) | 2023-04-07 | 2023-04-07 | Powder coating and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116218380A true CN116218380A (en) | 2023-06-06 |
Family
ID=86578909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310367498.4A Pending CN116218380A (en) | 2023-04-07 | 2023-04-07 | Powder coating and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116218380A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103483895A (en) * | 2013-08-26 | 2014-01-01 | 广州擎天材料科技有限公司 | Powder paint capable of increasing coating rate for dead angle of metal workpiece and preparation method of powder paint |
| CN104087135A (en) * | 2014-07-04 | 2014-10-08 | 蒋炳 | Spraying powder used for household appliance evaporator and preparation method thereof |
| CN104277682A (en) * | 2014-10-31 | 2015-01-14 | 安徽神剑新材料股份有限公司 | Powder coating sprayed through friction gun |
| CN104530909A (en) * | 2014-12-29 | 2015-04-22 | 浙江明泉工业涂装有限公司 | Powder coating for low-temperature solidified wine bottle and preparation method thereof |
| CN107936784A (en) * | 2017-11-14 | 2018-04-20 | 广州擎天材料科技有限公司 | A kind of powdery paints with rejection electrostatic efficiency and preparation method thereof |
| CN110373095A (en) * | 2019-07-05 | 2019-10-25 | 浙江聚华材料科技股份有限公司 | A kind of preparation method for the powdery paints improving powder utilization |
| CN111117436A (en) * | 2020-01-07 | 2020-05-08 | 江南载福粉末涂料（张家港）有限公司 | Zinc-rich base powder super-anticorrosion paint |
| CN111334157A (en) * | 2020-02-17 | 2020-06-26 | 安徽华辉塑业科技股份有限公司 | Powder coating for wooden furniture and preparation method thereof |
-
2023
- 2023-04-07 CN CN202310367498.4A patent/CN116218380A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103483895A (en) * | 2013-08-26 | 2014-01-01 | 广州擎天材料科技有限公司 | Powder paint capable of increasing coating rate for dead angle of metal workpiece and preparation method of powder paint |
| CN104087135A (en) * | 2014-07-04 | 2014-10-08 | 蒋炳 | Spraying powder used for household appliance evaporator and preparation method thereof |
| CN104277682A (en) * | 2014-10-31 | 2015-01-14 | 安徽神剑新材料股份有限公司 | Powder coating sprayed through friction gun |
| CN104530909A (en) * | 2014-12-29 | 2015-04-22 | 浙江明泉工业涂装有限公司 | Powder coating for low-temperature solidified wine bottle and preparation method thereof |
| CN107936784A (en) * | 2017-11-14 | 2018-04-20 | 广州擎天材料科技有限公司 | A kind of powdery paints with rejection electrostatic efficiency and preparation method thereof |
| CN110373095A (en) * | 2019-07-05 | 2019-10-25 | 浙江聚华材料科技股份有限公司 | A kind of preparation method for the powdery paints improving powder utilization |
| CN111117436A (en) * | 2020-01-07 | 2020-05-08 | 江南载福粉末涂料（张家港）有限公司 | Zinc-rich base powder super-anticorrosion paint |
| CN111334157A (en) * | 2020-02-17 | 2020-06-26 | 安徽华辉塑业科技股份有限公司 | Powder coating for wooden furniture and preparation method thereof |
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|---|
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