CN105038525B - Pre-coated metal coiled material powdery paints and its preparation method and application - Google Patents
Pre-coated metal coiled material powdery paints and its preparation method and application Download PDFInfo
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- CN105038525B CN105038525B CN201510350348.8A CN201510350348A CN105038525B CN 105038525 B CN105038525 B CN 105038525B CN 201510350348 A CN201510350348 A CN 201510350348A CN 105038525 B CN105038525 B CN 105038525B
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- coiled material
- metal coiled
- powdery paints
- coated metal
- polyester resin
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- 239000000463 material Substances 0.000 title claims abstract description 65
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 60
- 239000002184 metal Substances 0.000 title claims abstract description 60
- 239000003973 paint Substances 0.000 title claims abstract description 50
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims abstract description 27
- 229920001225 polyester resin Polymers 0.000 claims abstract description 25
- 239000004645 polyester resin Substances 0.000 claims abstract description 25
- 239000000843 powder Substances 0.000 claims abstract description 18
- 239000011248 coating agent Substances 0.000 claims abstract description 14
- 238000000576 coating method Methods 0.000 claims abstract description 14
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 8
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 5
- 239000002253 acid Substances 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 10
- 238000004017 vitrification Methods 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 5
- 238000010792 warming Methods 0.000 claims description 5
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-M acrylate group Chemical group C(C=C)(=O)[O-] NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 2
- -1 glyoxaline compound Chemical class 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 150000003242 quaternary ammonium salts Chemical group 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 6
- 238000007711 solidification Methods 0.000 abstract description 6
- 230000008023 solidification Effects 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000008199 coating composition Substances 0.000 abstract description 2
- 230000004048 modification Effects 0.000 abstract description 2
- 238000012986 modification Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000010422 painting Methods 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000002932 luster Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- OUPZKGBUJRBPGC-UHFFFAOYSA-N 1,3,5-tris(oxiran-2-ylmethyl)-1,3,5-triazinane-2,4,6-trione Chemical compound O=C1N(CC2OC2)C(=O)N(CC2OC2)C(=O)N1CC1CO1 OUPZKGBUJRBPGC-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The present invention relates to a kind of pre-coated metal coiled material powdery paints and its preparation method and application, belong to powdery paints technical field of modification. Pre-coated metal coiled material powdery paints of the present invention, is with end carboxyl saturated polyester resin and end carboxyl super branched polyester resin for base material, adds firming agent isocyanuric acid three-glycidyl ester and curing accelerator solidifies and prepares. Pre-coated metal coiled material powder coating formulation of the present invention is simple, flow leveling is excellent; Invention also provides preparation method simple, less costly, safety and environmental protection; Present invention also offers and apply the technique that metal coiled material is carried out application by this powdery paints so that powder coating solidification speed is fast, obtains levelability film excellent, in uniform thickness.
Description
Technical field
The present invention relates to a kind of pre-coated metal coiled material powdery paints and its preparation method and application, belong to powdery paints technical field of modification.
Background technology
Pre-coated coil is again steel plate with organic coating, color steel sheet, plastic clad sheet steel, color coated aluminum plate etc., and user can to its direct machine-shaping or directly use, it is not necessary to carries out application again, achieves be widely applied in building industry, household electric appliances. Coiled material pre-painting is at present based on liquid coating, but the pressure that environment is caused by its Organic substance volatilized in a large number is so as to application is greatly obstructed, powdery paints becomes the contenders of liquid coating as the coating being entirely free of organic solvent, has made some progress in coil painting.
Compare liquid application, the powder coating of coiled material there is also very big gap, the levelability relative deficiency of film coated surface, curing rate is slower, it is difficult to reach liquid application and is about the application speed of 100m/min, the linear speed of du pont company's industrialization powder finish line abroad is about about 24m/min, occupies first place, and domestic does not also reach this level.
CN201310039170.6 discloses a kind of silicon oil modified end carboxyl super branched polyester resin of Amino End Group and preparation method thereof and application, wherein end carboxyl super branched polyester resin is modified, and it is applied to powdery paints, improve heat resistance and the pliability of coating.
CN201210492761.4 discloses the preparation method of a kind of modified end carboxyl super branched polyester resin and the coating containing this resin "; it is that end carboxyl super branched polyester resin and silicone oligomer are reacted the end carboxyl super branched polyester resin that preparation is modified, is applied to powdery paints and also improves heat resistance and the pliability of coating.
CN201310043488.1 discloses silicon oil modified end carboxyl super branched polyester of a kind of end ring oxygen and preparation method thereof application, and it is applied to powdery paints, improves the heat resistance of powdery paints, pliability and cold-and-heat resistent change performance.
But be simultaneously used at present improving the technology of the levelability of powdery paints and curing rate also untapped out, therefore require study. Summary of the invention
It is an object of the invention to provide a kind of pre-coated metal coiled material powdery paints, its formula is simple, flow leveling is excellent;Invention also provides preparation method simple, less costly, safety and environmental protection; Present invention also offers and apply the technique that metal coiled material is carried out application by this powdery paints so that powder coating solidification speed is fast, obtains levelability film excellent, in uniform thickness.
Pre-coated metal coiled material powdery paints of the present invention, it is with end carboxyl saturated polyester resin and end carboxyl super branched polyester resin for base material, add firming agent isocyanuric acid three-glycidyl ester and curing accelerator solidify prepared, be specifically made up of the raw material of following weight/mass percentage composition:
The acid number of described end carboxyl saturated polyester resin is 28-33mgKOH/g, vitrification point 62-65 DEG C;
The acid number 28-33mgKOH/g of described end carboxyl super branched polyester resin, vitrification point 69-72 DEG C.
Described curing accelerator is quaternary ammonium salt, quaternary alkylphosphonium salt or glyoxaline compound.
Described levelling agent is organosilicon-modified acrylate.
Described degasser is Benzoinum.
Described pigment is weather-proof level, selects according to required color.
Described filler is based on barium sulfate and calcium carbonate.
The utilization of end carboxyl super branched polyester resin reduces the melting viscosity of powdery paints, improves the levelability of powdery paints, and the multinomial mechanical performance such as the pliability that improve TGIC type polyester powder coating. End carboxyl super branched polyester resin has highly branched structure and substantial amounts of end carboxyl active group, when its low viscosity makes end carboxyl super branched polyester resin be applied to powdery paints, can significantly improve the mobility of system; Its highly branched structure makes molecule inter-chain entanglement less, not easily crystallization, makes powdery paints have good filming performance, namely improves the levelability of powdery paints.
The preparation method of pre-coated metal coiled material powdery paints of the present invention, comprises the following steps:
After raw material mixer is sufficiently mixed, single screw rod or twin screw is adopted to melt extrude under 80-105 DEG C of condition, cool down tabletting again, then pulverize with jet mill, separate through single-stage or multi-cyclone, obtain the finished product powder particle of mean diameter 15��40 ��m with rotation sieve or bolting, namely prepare pre-coated metal coiled material powdery paints.
Metal coiled material is carried out the technique of application by this powdery paints of application of the present invention, comprises the following steps:
Electrostatic spray is adopted to be coated on metal coiled material surface prepared pre-coated metal coiled material powdery paints, with infrared lamp irradiation 5��20s when power is 1.5��2.0kW, powder particle is melted rapidly and levelling by infrared emanation effect, then metal coiled material is heated with intermediate frequency inductance, make metal coiled material base plate and cover and be warming up to 195-205 DEG C within film 1min, then the channel type drying machine insulation 1��3min of same temperature it is set, make film be fully cured, form the film that thickness is 30��50 ��m.
Adopt the combination and solidification technique including the multiple heating modes such as infrared, intermediate frequency inductance and channel type drying machine so that pre-coated metal coiled material powder coating solidification speed significantly improves, be suitable for the high speed precoating of metal coiled material.
The pre-coated metal coiled material powdery paints of preparation, it is adaptable to the colored application of the metal pre-coat coiled material such as steel, aluminum. Bright in luster, attractive in appearance through the metal coiled material film of application, levelability highlights, and mechanical performance is excellent, is suitable for later stage various machining, except being applicable in building and outdoor protection decoration, and can also extensive use in industries such as household electrical appliances, automobile, furniture.
Compared with prior art, the method have the advantages that
(1) the pre-coated metal coiled material described in is simple with powder coating formulation, with the addition of end carboxyl super branched polyester resin, reduces the melting viscosity of powdery paints, improves the levelability of powdery paints;
(2) preparation method is simple, less costly, safety and environmental protection, it is achieved that the quick continuous prodution of coil painting;
(3) adopt the combination and solidification technique including the multiple heating modes such as infrared, intermediate frequency inductance and channel type drying machine so that pre-coated metal coiled material powder coating solidification speed significantly improves, be suitable for the high speed precoating of metal coiled material;
(4) bright in luster, attractive in appearance through the metal coiled material film of application, levelability highlights, and mechanical performance is excellent, is suitable for later stage various machining, it is adaptable to multiple fields.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further illustrated, but it is not limiting as the enforcement of the present invention.
Raw materials used it is commercially available prod.
Embodiment 1
The formula of white pre-coated metal coiled material powdery paints is as follows:
The acid number of described end carboxyl saturated polyester resin is 30mgKOH/g, vitrification point 63 DEG C.
The acid number 28mgKOH/g of described end carboxyl super branched polyester resin, vitrification point 70 DEG C.
After raw material mixer is sufficiently mixed, single screw rod is adopted to melt extrude under 80 DEG C of conditions, cool down tabletting again, then pulverize with jet mill, separate through single stage cyclone, sieve, with rotating sieve, the finished product powder particle obtaining mean diameter 15 ��m, namely prepare pre-coated metal coiled material powdery paints.
Electrostatic spray is adopted to be coated on metal coiled material surface prepared pre-coated metal coiled material powdery paints, with infrared lamp irradiation 5s when power is 1.5kW, powder particle is melted rapidly and levelling by infrared emanation effect, then metal coiled material is heated with intermediate frequency inductance, make metal coiled material base plate and cover and within film 1min, be warming up to 195 DEG C, then at 195 DEG C, it is incubated 1min through channel type drying machine, makes film be fully cured, form the film that thickness is 30 ��m.
Embodiment 2
The formula of black pre-coated metal coiled material powdery paints is as follows:
The acid number of described end carboxyl saturated polyester resin is 33mgKOH/g, vitrification point 65 DEG C.
The acid number 30mgKOH/g of described end carboxyl super branched polyester resin, vitrification point 72 DEG C.
After raw material mixer is sufficiently mixed, twin screw is adopted to melt extrude under 105 DEG C of conditions, cool down tabletting again, then pulverize with jet mill, separate through multi-cyclone, obtain the finished product powder particle of mean diameter 40 ��m with bolting, namely prepare pre-coated metal coiled material powdery paints.
Electrostatic spray is adopted to be coated on metal coiled material surface prepared pre-coated metal coiled material powdery paints, with infrared lamp irradiation 20s when power is 2.0kW, powder particle is melted rapidly and levelling by infrared emanation effect, then metal coiled material is heated with intermediate frequency inductance, make metal coiled material base plate and cover and within film 1min, be warming up to 205 DEG C, then at 205 DEG C, it is incubated 3min through channel type drying machine, makes film be fully cured, form the film that thickness is 50 ��m.
Embodiment 3
The formula of Dark grey pre-coated metal coiled material powdery paints is as follows:
The acid number of described end carboxyl saturated polyester resin is 28mgKOH/g, vitrification point 62 DEG C.
The acid number 33mgKOH/g of described end carboxyl super branched polyester resin, vitrification point 69 DEG C.
After raw material mixer is sufficiently mixed, single screw rod is adopted to melt extrude under 95 DEG C of conditions, cool down tabletting again, then pulverize with jet mill, separate through multi-cyclone, obtain the finished product powder particle of mean diameter 30 ��m with bolting, namely prepare pre-coated metal coiled material powdery paints.
Electrostatic spray is adopted to be coated on metal coiled material surface prepared pre-coated metal coiled material powdery paints, with infrared lamp irradiation 10s when power is 1.0kW, powder particle is melted rapidly and levelling by infrared emanation effect, then metal coiled material is heated with intermediate frequency inductance, make metal coiled material base plate and cover and within film 1min, be warming up to 200 DEG C, then at 200 DEG C, it is incubated 2min through channel type drying machine, makes film be fully cured, form the film that thickness is 40 ��m.
The main performance testing results of embodiment 1-3 gained film is as shown in table 1.
The main performance testing results of table 1 embodiment 1-3 gained film
Claims (9)
1. a pre-coated metal coiled material powdery paints, it is characterised in that: with end carboxyl saturated polyester resin and end carboxyl super branched polyester resin for base material, add firming agent isocyanuric acid three-glycidyl ester and curing accelerator solidifies and prepares;
Described coating is made up of the raw material of following weight/mass percentage composition:
The acid number of described end carboxyl saturated polyester resin is 28-33mgKOH/g, vitrification point 62-65 DEG C;
The acid number 28-33mgKOH/g of described end carboxyl super branched polyester resin, vitrification point 69-72 DEG C.
2. pre-coated metal coiled material powdery paints according to claim 1, it is characterised in that: curing accelerator is quaternary ammonium salt, quaternary alkylphosphonium salt or glyoxaline compound.
3. pre-coated metal coiled material powdery paints according to claim 1, it is characterised in that: levelling agent is organosilicon-modified acrylate.
4. the preparation method of the arbitrary described pre-coated metal coiled material powdery paints of claim 1-3, it is characterized in that comprising the following steps: after being mixed by raw material, adopt single screw rod or twin-screw extrusion, extrusion melt temperature is 80-105 DEG C, cool down tabletting again, then pulverize, separate, sieve, prepare pre-coated metal coiled material powdery paints.
5. the preparation method of pre-coated metal coiled material powdery paints according to claim 4, it is characterised in that: the particle diameter obtaining powder particle that sieves is 15��40 ��m.
6. the application of the arbitrary described pre-coated metal coiled material powdery paints of claim 1-3, it is characterized in that: prepared pre-coated metal coiled material powdery paints is coated on metal coiled material surface, use infrared lamp irradiation, then metal coiled material is heated with intermediate frequency inductance, make metal coiled material base plate and cover and be warming up to 195-205 DEG C within film 1min, it is then passed through channel type drying machine insulation 1��3min, forms film.
7. the application of pre-coated metal coiled material powdery paints according to claim 6, it is characterised in that: adopt electrostatic spray to be coated on metal coiled material surface prepared pre-coated metal coiled material powdery paints.
8. the application of pre-coated metal coiled material powdery paints according to claim 6, it is characterised in that: the power of infrared lamp used is 1.5��2.0kW, irradiation 5��20s.
9. the application of pre-coated metal coiled material powdery paints according to claim 6, it is characterised in that: the thickness of the film of formation is 30��50 ��m.
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| CN201510350348.8A CN105038525B (en) | 2015-06-23 | 2015-06-23 | Pre-coated metal coiled material powdery paints and its preparation method and application |
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| CN201510350348.8A CN105038525B (en) | 2015-06-23 | 2015-06-23 | Pre-coated metal coiled material powdery paints and its preparation method and application |
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| CN105038525B true CN105038525B (en) | 2016-06-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105885648A (en) * | 2016-05-09 | 2016-08-24 | 杨培 | Self-cleaning high-dispersivity powder paint for coiled material and preparation method thereof |
| CN115109259A (en) * | 2022-06-22 | 2022-09-27 | 擎天材料科技有限公司 | Polyester resin, low-temperature curing powder coating composition, and preparation method and application thereof |
| CN114907752B (en) * | 2022-06-27 | 2023-07-28 | 江南载福粉末涂料（张家港）有限公司 | Preparation method of carboxyl-terminated saturated polyester resin with low curing temperature |
| CN115121458A (en) * | 2022-07-29 | 2022-09-30 | 福耀科技发展(苏州)有限公司 | Automobile exterior trimming part and coating method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104194583A (en) * | 2014-08-27 | 2014-12-10 | 山东朗法博粉末涂装科技有限公司 | Weather-resistant type powder paint capable of substituting aluminum profile chromating process and preparation method of weather-resistant type powder paint |
| CN104263211A (en) * | 2014-10-17 | 2015-01-07 | 西北永新涂料有限公司 | Special anticorrosive powder coating for high-decorativeness pure polyester aluminum section and preparation method of powder coating |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104194583A (en) * | 2014-08-27 | 2014-12-10 | 山东朗法博粉末涂装科技有限公司 | Weather-resistant type powder paint capable of substituting aluminum profile chromating process and preparation method of weather-resistant type powder paint |
| CN104263211A (en) * | 2014-10-17 | 2015-01-07 | 西北永新涂料有限公司 | Special anticorrosive powder coating for high-decorativeness pure polyester aluminum section and preparation method of powder coating |
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Effective date of registration: 20190624 Address after: 256501 Pangjia Industrial Park, Pangjia Town, Boxing County, Binzhou City, Shandong Province, 27 Patentee after: Seaga powder technology (Binzhou) Co., Ltd. Address before: 265711 Xiangchengmiao Village, Xinjia Street, Longkou City, Yantai City, Shandong Province Patentee before: Seagull Technology (Yantai) Co., Ltd. powder |
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