CN105038525A - Powder coating for precoated metal coils, preparation method and application thereof - Google Patents
Powder coating for precoated metal coils, preparation method and application thereof Download PDFInfo
- Publication number
- CN105038525A CN105038525A CN201510350348.8A CN201510350348A CN105038525A CN 105038525 A CN105038525 A CN 105038525A CN 201510350348 A CN201510350348 A CN 201510350348A CN 105038525 A CN105038525 A CN 105038525A
- Authority
- CN
- China
- Prior art keywords
- powder coating
- coiled material
- metal coiled
- coated metal
- material powder
- 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.)
- Granted
Links
Landscapes
- Paints Or Removers (AREA)
Abstract
The invention relates to a powder coating for precoated metal coils, a preparation method and application thereof, and belongs to the technical field of powder coating modification. The preparation method comprises the following steps: carboxyl-terminated saturated polyester resin and carboxyl-terminated hyperbranched polyester resin are adopted as the basic materials; a curding agent triglycidyl isocyanurate and a curing accelerator are added to cure the basic materials to prepare the powder coating. The powder coating for precoated metal coils is simple in formula and excellent in leveling property; and besides, the invention provides the preparation method which is easy and convenient to operate, relatively low in cost, safe and environment-friendly, and also provides a technology in which the powder coating is used for coating metal coils; the powder coating is enabled to be high in curing speed, and a coating film excellent in leveling property and uniform in thickness is obtained.
Description
Technical field
The present invention relates to a kind of pre-coated metal coiled material powder coating and its preparation method and application, belong to powder coating 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 to its direct machine-shaping or directly can use, and without the need to carrying out application again, achieving apply widely in construction industry, household electric appliances.Coiled material pre-painting is at present based on liquid coating, but its organism volatilized in a large number makes it application to the pressure that environment causes greatly to be obstructed, powder coating becomes the contenders of liquid coating as the coating not containing organic solvent completely, has made some progress in coil painting.
Compare liquid application, also there is very large gap in the powder coating of coiled material, the levelling property relative deficiency of film coated surface, curing speed is slower, be difficult to reach the application speed that liquid application is about 100m/min, the linear speed of du pont company's industrialization powder finish line is abroad about about 24m/min, occupies first place, and does not domesticly also reach this level.
CN201310039170.6 discloses silicon oil modified end carboxyl super branched vibrin of a kind of Amino End Group and preparation method thereof and application, wherein modification is carried out to end carboxyl super branched vibrin, and be applied to powder coating, improve resistance toheat and the snappiness of coating.
CN201210492761.4 discloses a kind of preparation method of end carboxyl super branched polyester resin of modification and the coating containing this resin "; be the end carboxyl super branched vibrin by end carboxyl super branched vibrin and silicone oligomer reaction preparation modification, be applied to resistance toheat and snappiness that powder coating also improves 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 powder coating, improves the resistance toheat of powder coating, snappiness and cold-and-heat resistent change performance.
But the technology at present simultaneously for the levelling property and curing speed that improve powder coating is also out untapped, therefore requires study.Summary of the invention
The object of this invention is to provide a kind of pre-coated metal coiled material powder coating, its formula is simple, flow leveling is excellent; Invention also provides simple, cost is lower, the preparation method of safety and environmental protection; Present invention also offers this powder coating of application carries out application technique to metal coiled material, make powder coating solidification speed fast, obtain levelling property excellence, the uniform film of thickness.
Pre-coated metal coiled material powder coating of the present invention, for base-material with end carboxyl saturated polyester resin and end carboxyl super branched vibrin, add solidifying agent isocyanuric acid three-glycidyl ester and curing catalyst solidification is obtained, be specifically made up of the raw material of following mass percentage:
The acid number of described end carboxyl saturated polyester resin is 28-33mgKOH/g, second-order transition temperature 62-65 DEG C;
The acid number 28-33mgKOH/g of described end carboxyl super branched vibrin, second-order transition temperature 69-72 DEG C.
Described curing catalyst is quaternary ammonium salt, quaternary alkylphosphonium salt or glyoxaline compound.
Described flow agent is organosilicon-modified acrylate.
Described air release agent is st-yrax.
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 vibrin reduces the melting viscosity of powder coating, improves the levelling property of powder coating, and improves the multinomial mechanical propertys such as the snappiness of TGIC type polyester powder coating.End carboxyl super branched vibrin has highly branched structure and a large amount of end carboxyl active groups, when its low viscosity makes end carboxyl super branched vibrin be applied to powder coating, significantly can improve the mobility of system; Its highly branched structure makes molecule inter-chain entanglement less, not easily crystallization, makes powder coating have good film forming properties, namely improves the levelling property of powder coating.
The preparation method of pre-coated metal coiled material powder coating of the present invention, comprises the following steps:
After raw material mixing machine is fully mixed, singe screw or twin screw is adopted to melt extrude under 80-105 DEG C of condition, cool compressing tablet again, then pulverize with micronizer mill, be separated through single-stage or multi-cyclone, the finished product powder particle of median size 15 ~ 40 μm is obtained, i.e. obtained pre-coated metal coiled material powder coating with rotating screen or bolting.
This powder coating of application of the present invention carries out the technique of application to metal coiled material, comprise the following steps:
Electrostatic spraying is adopted to be coated on metal coiled material surface obtained pre-coated metal coiled material powder coating, with infrared lamp be irradiation 5 ~ 20s under the condition of 1.5 ~ 2.0kW at power, powder particle is subject to the rapid melting of infrared emanation effect and levelling, then intermediate frequency inductance heating of metal coiled material is used, make metal coiled material base plate and cover within film 1min to be warming up to 195-205 DEG C, then through setting the channel type drying machine insulation 1 ~ 3min of same temperature, film is solidified completely, forms the film that thickness is 30 ~ 50 μm.
Adopt the combination and solidification technique comprising the multiple heating modes such as infrared, intermediate frequency inductance and channel type drying machine, pre-coated metal coiled material powder coating solidification speed is significantly improved, be applicable to the high speed precoating of metal coiled material.
The pre-coated metal coiled material powder coating of preparation, is applicable to the colored application of the metal pre-coat such as steel, aluminium coiled material.Metal coiled material film through application is bright in luster, attractive in appearance, and levelling property is given prominence to, and mechanical property is excellent, is applicable to later stage various mechanical workout, except being applicable in building and outdoor protection decoration, and also can widespread use in industries such as household electrical appliances, automobile, furniture.
Compared with prior art, the present invention has following beneficial effect:
(1) the pre-coated metal coiled material described in is simple with powder coating formulation, with the addition of end carboxyl super branched vibrin, reduces the melting viscosity of powder coating, improve the levelling property of powder coating;
(2) preparation method is simple, and cost is lower, safety and environmental protection, achieves the quick continuous prodution of coil painting;
(3) adopt the combination and solidification technique comprising the multiple heating modes such as infrared, intermediate frequency inductance and channel type drying machine, pre-coated metal coiled material powder coating solidification speed is significantly improved, be applicable to the high speed precoating of metal coiled material;
(4) the metal coiled material film through application is bright in luster, attractive in appearance, and levelling property is given prominence to, and mechanical property is excellent, is applicable to later stage various mechanical workout, is applicable to multiple fields.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated, but it does not limit enforcement of the present invention.
Raw materials usedly be commercially available prod.
Embodiment 1
The formula of white pre-coated metal coiled material powder coating is as follows:
The acid number of described end carboxyl saturated polyester resin is 30mgKOH/g, second-order transition temperature 63 DEG C.
The acid number 28mgKOH/g of described end carboxyl super branched vibrin, second-order transition temperature 70 DEG C.
After raw material mixing machine is fully mixed, singe screw is adopted to melt extrude under 80 DEG C of conditions, cool compressing tablet again, then pulverize with micronizer mill, be separated through single stage cyclone, the finished product powder particle of median size 15 μm is obtained, i.e. obtained pre-coated metal coiled material powder coating with rotating screen screening.
Electrostatic spraying is adopted to be coated on metal coiled material surface obtained pre-coated metal coiled material powder coating, with infrared lamp be irradiation 5s under the condition of 1.5kW at power, powder particle is subject to the rapid melting of infrared emanation effect and levelling, then intermediate frequency inductance heating of metal coiled material is used, make metal coiled material base plate and cover within film 1min to be warming up to 195 DEG C, then at 195 DEG C, be incubated 1min through channel type drying machine, film is solidified completely, form the film that thickness is 30 μm.
Embodiment 2
The formula of black pre-coated metal coiled material powder coating is as follows:
The acid number of described end carboxyl saturated polyester resin is 33mgKOH/g, second-order transition temperature 65 DEG C.
The acid number 30mgKOH/g of described end carboxyl super branched vibrin, second-order transition temperature 72 DEG C.
After raw material mixing machine is fully mixed, twin screw is adopted to melt extrude under 105 DEG C of conditions, cool compressing tablet again, then pulverize with micronizer mill, be separated through multi-cyclone, the finished product powder particle of median size 40 μm is obtained, i.e. obtained pre-coated metal coiled material powder coating with bolting.
Electrostatic spraying is adopted to be coated on metal coiled material surface obtained pre-coated metal coiled material powder coating, with infrared lamp be irradiation 20s under the condition of 2.0kW at power, powder particle is subject to the rapid melting of infrared emanation effect and levelling, then intermediate frequency inductance heating of metal coiled material is used, make metal coiled material base plate and cover within film 1min to be warming up to 205 DEG C, then at 205 DEG C, be incubated 3min through channel type drying machine, film is solidified completely, form the film that thickness is 50 μm.
Embodiment 3
The formula of Dark grey pre-coated metal coiled material powder coating is as follows:
The acid number of described end carboxyl saturated polyester resin is 28mgKOH/g, second-order transition temperature 62 DEG C.
The acid number 33mgKOH/g of described end carboxyl super branched vibrin, second-order transition temperature 69 DEG C.
After raw material mixing machine is fully mixed, singe screw is adopted to melt extrude under 95 DEG C of conditions, cool compressing tablet again, then pulverize with micronizer mill, be separated through multi-cyclone, the finished product powder particle of median size 30 μm is obtained, i.e. obtained pre-coated metal coiled material powder coating with bolting.
Electrostatic spraying is adopted to be coated on metal coiled material surface obtained pre-coated metal coiled material powder coating, with infrared lamp be irradiation 10s under the condition of 1.0kW at power, powder particle is subject to the rapid melting of infrared emanation effect and levelling, then intermediate frequency inductance heating of metal coiled material is used, make metal coiled material base plate and cover within film 1min to be warming up to 200 DEG C, then at 200 DEG C, be incubated 2min through channel type drying machine, film is solidified completely, form the film that thickness is 40 μm.
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 (10)
1. a pre-coated metal coiled material powder coating, is characterized in that: with end carboxyl saturated polyester resin and end carboxyl super branched vibrin for base-material, adds solidifying agent isocyanuric acid three-glycidyl ester and curing catalyst solidification is obtained.
2. pre-coated metal coiled material powder coating according to claim 1, is characterized in that being made up of the raw material of following mass percentage:
The acid number of described end carboxyl saturated polyester resin is 28-33mgKOH/g, second-order transition temperature 62-65 DEG C;
The acid number 28-33mgKOH/g of described end carboxyl super branched vibrin, second-order transition temperature 69-72 DEG C.
3. pre-coated metal coiled material powder coating according to claim 1, is characterized in that: curing catalyst is quaternary ammonium salt, quaternary alkylphosphonium salt or glyoxaline compound.
4. pre-coated metal coiled material powder coating according to claim 1, is characterized in that: flow agent is organosilicon-modified acrylate.
5. the preparation method of the arbitrary described pre-coated metal coiled material powder coating of claim 1-4, it is characterized in that comprising the following steps: adopt singe screw or twin-screw extrusion by after raw material mixing, extruding melt temperature is 80-105 DEG C, cool compressing tablet again, then pulverize, be separated, sieve, obtained pre-coated metal coiled material powder coating.
6. the preparation method of pre-coated metal coiled material powder coating according to claim 5, is characterized in that: the particle diameter obtaining powder particle that sieves is 15 ~ 40 μm.
7. the application of the arbitrary described pre-coated metal coiled material powder coating of claim 1-4, it is characterized in that: obtained pre-coated metal coiled material powder coating is coated on metal coiled material surface, use infrared lamp irradiation, then intermediate frequency inductance heating of metal coiled material is used, make metal coiled material base plate and cover within film 1min to be warming up to 195-205 DEG C, then through channel type drying machine insulation 1 ~ 3min, film is formed.
8. the application of pre-coated metal coiled material powder coating according to claim 7, is characterized in that: adopt electrostatic spraying to be coated on metal coiled material surface obtained pre-coated metal coiled material powder coating.
9. the application of pre-coated metal coiled material powder coating according to claim 7, is characterized in that: the power of infrared lamp used is 1.5 ~ 2.0kW, irradiation 5 ~ 20s.
10. the application of pre-coated metal coiled material powder coating according to claim 7, is characterized in that: the thickness of the film of formation is 30 ~ 50 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510350348.8A CN105038525B (en) | 2015-06-23 | 2015-06-23 | Pre-coated metal coiled material powdery paints and its preparation method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510350348.8A CN105038525B (en) | 2015-06-23 | 2015-06-23 | Pre-coated metal coiled material powdery paints and its preparation method and application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105038525A true CN105038525A (en) | 2015-11-11 |
| CN105038525B CN105038525B (en) | 2016-06-08 |
Family
ID=54445511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510350348.8A Active CN105038525B (en) | 2015-06-23 | 2015-06-23 | Pre-coated metal coiled material powdery paints and its preparation method and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105038525B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105885648A (en) * | 2016-05-09 | 2016-08-24 | 杨培 | Self-cleaning high-dispersivity powder paint for coiled material and preparation method thereof |
| CN114907752A (en) * | 2022-06-27 | 2022-08-16 | 江南载福粉末涂料（张家港）有限公司 | Preparation method of low-curing-temperature carboxyl-terminated saturated polyester resin |
| 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 |
| 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 |
-
2015
- 2015-06-23 CN CN201510350348.8A patent/CN105038525B/en active Active
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 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN114907752A (en) * | 2022-06-27 | 2022-08-16 | 江南载福粉末涂料（张家港）有限公司 | Preparation method of low-curing-temperature carboxyl-terminated saturated polyester resin |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105038525B (en) | 2016-06-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101508869B (en) | Stainless steel colored aluminum silver power paint and method of preparing the same | |
| CN105038525B (en) | Pre-coated metal coiled material powdery paints and its preparation method and application | |
| CN103146292B (en) | Boil-resistant polyester powder coating, and preparation method and application thereof | |
| CN102061120B (en) | Compound type insulating powder coating and preparation method thereof | |
| CN110922856B (en) | Powder coating with ultrahigh weather-resistant extinction effect | |
| CN101985538A (en) | Environment-friendly low-temperature curing pure polyester powder paint and preparation method thereof | |
| CN102408550A (en) | Carboxyl-terminated polyester resin for super weather-proof powder coating and preparation method thereof | |
| CN103483988A (en) | Boiling-endurable sand-ripple powder paint for coating corners of aluminum section and preparation method thereof | |
| CN103468099A (en) | Water-based adiabatic antistatic coating and preparation method thereof | |
| CN102277024A (en) | Construction powdery paint | |
| CN104046214A (en) | Energy-saving environment-friendly low-gloss polyester acrylate powder paint for aluminum profile and preparation method thereof | |
| CN117070135B (en) | Weather-resistant powder coating and preparation method thereof | |
| CN114316752A (en) | Powder coating composition with stable pearl feel, preparation method thereof and coating | |
| CN104277682A (en) | Powder coating sprayed through friction gun | |
| CN103642290A (en) | Preparation method of metal-effect powder paint | |
| CN104119783A (en) | Weather-resistant powder coating | |
| CN105199535A (en) | Pure epoxy powder paint for electromagnetic line coating and preparing method of paint | |
| CN102153940A (en) | Energy-saving highly-decorative powder paint and preparation method thereof | |
| CN103194139A (en) | Novel outdoor pure polyester powder coating and preparation method thereof | |
| CN105111899A (en) | Metallic outdoor pattern powder coating and producing method thereof | |
| CN103160193A (en) | Zero diopter type polyester powder coating and preparation method thereof | |
| CN103289521A (en) | High-strength heatproof powder coating and preparation method thereof | |
| CN104559691A (en) | Polymer composite for heat transfer printing low-temperature crosslinking and preparation method thereof | |
| CN103289519A (en) | Anti-oil stain powder coating and preparation method thereof | |
| CN103289500B (en) | A kind of powdery paints that contains nano-attapulgite and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
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 |
|
| TR01 | Transfer of patent right |