CN114836108A - Thermosetting powder coating coated on synthetic material product and preparation method thereof - Google Patents
Thermosetting powder coating coated on synthetic material product and preparation method thereof Download PDFInfo
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- CN114836108A CN114836108A CN202110141507.9A CN202110141507A CN114836108A CN 114836108 A CN114836108 A CN 114836108A CN 202110141507 A CN202110141507 A CN 202110141507A CN 114836108 A CN114836108 A CN 114836108A
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- 238000000576 coating method Methods 0.000 title claims abstract description 63
- 239000011248 coating agent Substances 0.000 title claims abstract description 59
- 239000000843 powder Substances 0.000 title claims abstract description 56
- 229920001187 thermosetting polymer Polymers 0.000 title claims abstract description 39
- 229920002994 synthetic fiber Polymers 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 239000000463 material Substances 0.000 claims abstract description 24
- 238000001816 cooling Methods 0.000 claims abstract description 15
- 229920005989 resin Polymers 0.000 claims abstract description 12
- 239000011347 resin Substances 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 238000004806 packaging method and process Methods 0.000 claims abstract description 7
- 239000000049 pigment Substances 0.000 claims abstract description 5
- 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 claims abstract description 4
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 4
- 239000003054 catalyst Substances 0.000 claims abstract description 4
- 239000002131 composite material Substances 0.000 claims abstract description 4
- 239000013078 crystal Substances 0.000 claims abstract description 4
- 238000001125 extrusion Methods 0.000 claims abstract description 4
- 229920001225 polyester resin Polymers 0.000 claims abstract description 4
- 239000004645 polyester resin Substances 0.000 claims abstract description 4
- 229910000077 silane Inorganic materials 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 238000001723 curing Methods 0.000 description 13
- 239000003973 paint Substances 0.000 description 12
- 239000012855 volatile organic compound Substances 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 6
- 238000009835 boiling Methods 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000011416 infrared curing Methods 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 235000013312 flour Nutrition 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002612 dispersion medium Substances 0.000 description 1
- 238000007590 electrostatic spraying Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/03—Powdery paints
- C09D5/033—Powdery paints characterised by the additives
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 discloses a thermosetting powder coating coated on a synthetic material product and a preparation method thereof, wherein the synthetic material product takes unsaturated resin and CaCO ₃ as main synthetic materials, and the thermosetting powder coating comprises the following components in percentage by mass: 500 parts of polyester resin, 20 parts of TGIC, 360 parts of silane modified composite material, 10 parts of auxiliary agent, 10 parts of pigment, 100 parts of crystal resin and 2-10 parts of catalyst; the preparation method comprises the following steps: (1) material mixing and melt extrusion; (2) tabletting and cooling; (3) coarse crushing; (4) micro-powder; (5) inspecting and packaging; (6) and (6) warehousing the finished product.
Description
Technical Field
The invention relates to the technical field of thermosetting powder coatings, in particular to a thermosetting powder coating coated on a synthetic material product and a preparation method thereof.
Background
The powder coating is a solid powder synthetic resin coating composed of solid resin, pigment, filler and assistant. Unlike existing paints, its dispersion medium is not a solvent and water, but air. It has the characteristics of no solvent pollution, 100 percent film forming and low energy consumption. Firstly, the paint is not environment-friendly enough, has low safety and poor mechanical properties, such as poor adhesive force and general wear resistance, and the water absorption rate of the coatingThe paint has the advantages of high strength, boiling resistance, poor impact resistance, discharge of VOC (volatile organic compounds), environmental protection, multiple spraying and subsequent polishing of the paint, low coating efficiency and poor performance of the conventional paint; in addition, powder coatings fall into two broad categories: thermoplastic powder coatings and thermosetting powder coatings. The curing temperature of the prior thermosetting powder coating is usually about 180 ℃, the curing temperature is high, and the coating is difficult to coat on heat-sensitive materials, such as unsaturated resin and CaCO 3 The infrared curing coating material is a synthetic material product which is a main synthetic material, and has the advantages of narrow applicable material range, general universality, low infrared curing speed and low coating efficiency.
Therefore, how to realize a thermosetting powder coating which is energy-saving and environment-friendly, has high coating efficiency, strong adhesion of a coating, high wear resistance, low water absorption, boiling resistance, good shock resistance, no VOC (volatile organic compounds) emission, various properties far higher than those of paint, lower curing temperature, effective expansion of applicable material range, strong universality and high curing speed, and effectively improves the coating efficiency, and can be coated on a synthetic material product is a technical problem to be solved urgently in the industry.
Disclosure of Invention
The invention mainly aims to provide a thermosetting powder coating coated on a synthetic material product and a preparation method thereof, and aims to realize the thermosetting powder coating which is energy-saving, environment-friendly, high in coating efficiency, strong in coating adhesive force, high in wear resistance, low in water absorption, boiling resistant, good in impact resistance, free of VOC (volatile organic compounds) emission, far higher in various performances than those of paint, lower in curing temperature, capable of effectively enlarging the applicable material range, strong in universality, high in curing speed and capable of effectively improving the coating efficiency and can be coated on the synthetic material product.
The invention provides a thermosetting powder coating cured at 130 ℃ and 120 ℃ coated on a synthetic material product, wherein the synthetic material product is prepared from unsaturated resin and CaCO 3 The thermosetting powder coating is a main synthetic material, and the formula of the thermosetting powder coating comprises the following components in percentage by mass: 500 parts of polyester resin, 20 parts of TGIC, 360 parts of silane modified composite material, 10 parts of auxiliary agent, 10 parts of pigment, 100 parts of crystal resin and 2-10 parts of catalyst.
The invention provides a preparation method for producing the thermosetting powder coating, which comprises the following steps:
(1) material preparation and melt extrusion: pouring all the materials in the formula of claim 1 into a mixing cylinder for stirring, and melting and extruding the mixed materials through a double-screw extruder after uniform stirring, wherein the rotating speed of a mixing motor is 28HZ, the rotating speed of the double-screw extruder is 48HZ, the double-screw extruder is internally provided with a first area and a second area, the temperature in the first area is set to be 100-110 ℃, and the temperature in the second area is set to be 80-90 ℃;
(2) tabletting and cooling: cooling the mixture melt-extruded in the step (1) by a cooling machine and pressing into slices;
(3) coarse crushing: crushing the cooled slices into small pieces by a crusher;
(4) micro-powder: sending the small-sized materials into a pulverizer to carry out micro-powder operation, and then filtering by using a 180-mesh screen, wherein the filtered powder is the thermosetting powder coating;
(5) and (3) inspection and packaging: detecting the filtered thermosetting powder coating, and packaging qualified products;
(6) finished products are put in storage: and transferring the packaged finished product into a warehouse.
Preferably, the thickness of the thin slice in the step (2) is 0.5-1.5mm, and the cooling temperature of the cooling machine is 5-20 ℃.
Preferably, in the step (4), the frequency of the main mill of the mill is 45-50Hz, the frequency of the auxiliary mill is 28-33Hz, and the feeding frequency of the mill is 25-30 Hz.
The thermosetting powder coating which can be coated on a synthetic material product and cured at the temperature of 120 plus 130 ℃ and has the advantages of energy conservation, environmental protection, high coating efficiency, strong adhesion of a coating, high wear resistance, low water absorption, boiling resistance, good impact resistance, no VOC (volatile organic compounds) emission, various properties far higher than those of paint, lower curing temperature, effective expansion of applicable material range, strong universality, high curing speed and effective improvement of coating efficiency is realized, and the preparation method is scientific and reasonable, the process is simple and the production and preparation efficiency is high.
Drawings
FIG. 1 is a schematic process flow diagram of the process for preparing a thermosetting powder coating material for application to a synthetic material product according to the invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
An embodiment of the thermosetting powder coating composition according to the invention applied to a synthetic material product with unsaturated resin and CaCO is now presented 3 The thermosetting powder coating is a main synthetic material, and the formula of the thermosetting powder coating comprises the following components in percentage by mass: 500 parts of polyester resin, 20 parts of TGIC, 360 parts of silane modified composite material, 10 parts of auxiliary agent, 10 parts of pigment, 100 parts of crystal resin and 2-10 parts of catalyst.
Referring to fig. 1, a preparation method for producing the thermosetting powder coating comprises the following steps:
(1) material preparation and melt extrusion: pouring all the materials in the formula of claim 1 into a mixing cylinder for stirring, and melting and extruding the mixed materials through a double-screw extruder after uniform stirring, wherein the rotating speed of a mixing motor is 28HZ, the rotating speed of the double-screw extruder is 48HZ, the double-screw extruder is internally provided with a first area and a second area, the temperature in the first area is set to be 100-110 ℃, and the temperature in the second area is set to be 80-90 ℃;
(2) tabletting and cooling: cooling the mixture melt-extruded in the step (1) by a cooling machine and pressing into slices;
(3) coarse crushing: crushing the cooled slices into small pieces by a crusher;
(4) micro-powder: sending the small-sized materials into a pulverizer to carry out micro-powder operation, and then filtering by using a 180-mesh screen, wherein the filtered powder is the thermosetting powder coating;
(5) and (3) inspection and packaging: detecting the filtered thermosetting powder coating, and packaging qualified products;
(6) finished products are put in storage: and transferring the packaged finished product into a warehouse.
Wherein the thickness of the slice in the step (2) is 0.5-1.5mm, and the cooling temperature of the cooling machine is 5-20 ℃.
Wherein, the frequency of the main mill of the flour mill in the step (4) is 45-50HZ, the frequency of the auxiliary mill is 28-33HZ, and the feeding frequency of the flour mill is 25-30 HZ.
The preparation method is scientific and reasonable, simplifies the process flow, has simple procedures and is beneficial to improving the production and preparation efficiency.
The thermosetting powder coating is coated on the surface of a coated object in an electrostatic spraying mode, is melted and leveled by infrared baking, is cured into a film, and has good leveling property, high hardness (4H-5H) and excellent decoration. Moreover, the powder does not contain any solvent, so that the method is pollution-free, high in utilization rate, low in energy consumption, high in production efficiency and excellent in film coating performance, and the powder can be recycled; after the powder coating is cured, the coating has low water absorption, boiling resistance, good impact resistance, no VOC emission, excellent surface adhesion and good performance indexes.
In addition, the curing temperature of the thermosetting powder coating is 120-130 ℃, while the curing temperature of the conventional thermosetting powder coating is 180 ℃, and the thermosetting powder coating has low curing temperature and can be coated on a thermosensitive material, such as unsaturated resin and CaCO 3 The coating material is a synthetic material product of a main synthetic material, the applicable material range is effectively enlarged, the universality is strong, the infrared curing speed is high, and the coating efficiency is high.
The thermosetting powder paint may be coated with unsaturated resin and CaCO 3 The thermosetting powder coating overcomes the defects of insufficient environmental protection and low safety of the paint, improves the mechanical properties such as strong adhesive force, high wear resistance and the like, needs to be sprayed for many times and then polished, can be finished by one-time coating, and has high coating efficiencyIt can be seen that the properties of the thermosetting powder coating are much higher than those of paint.
The thermosetting powder coating which can be coated on a synthetic material product and cured at the temperature of 120 plus 130 ℃ and has the advantages of energy conservation, environmental protection, high coating efficiency, strong adhesion of a coating, high wear resistance, low water absorption, boiling resistance, good impact resistance, no VOC (volatile organic compounds) emission, various properties far higher than those of paint, lower curing temperature, effective expansion of applicable material range, strong universality, high curing speed and effective improvement of coating efficiency is realized, and the preparation method is scientific and reasonable, the process is simple and the production and preparation efficiency is high.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or any other related technical fields, are included in the scope of the present invention.
Claims (4)
1. Thermosetting powder coating for application to synthetic material products containing unsaturated resins and CaCO 3 Is a main synthetic material and is characterized in that the thermosetting powder coating comprises the following components in percentage by mass: 500 parts of polyester resin, 20 parts of TGIC, 360 parts of silane modified composite material, 10 parts of auxiliary agent, 10 parts of pigment, 100 parts of crystal resin and 2-10 parts of catalyst.
2. A process for preparing a thermosetting powder coating according to claim 1, comprising the steps of:
(1) material preparation and melt extrusion: pouring all the materials in the formula of claim 1 into a mixing cylinder for stirring, and melting and extruding the mixed materials through a double-screw extruder after uniform stirring, wherein the rotating speed of a mixing motor is 28HZ, the rotating speed of the double-screw extruder is 48HZ, the double-screw extruder is internally provided with a first area and a second area, the temperature in the first area is set to be 100-110 ℃, and the temperature in the second area is set to be 80-90 ℃;
(2) tabletting and cooling: cooling the mixture melt-extruded in the step (1) by a cooling machine and pressing into slices;
(3) coarse crushing: crushing the cooled slices into small pieces by a crusher;
(4) micro-powder: sending the small-sized materials into a pulverizer to carry out micro-powder operation, and then filtering by using a 180-mesh screen, wherein the filtered powder is the thermosetting powder coating;
(5) and (3) inspection and packaging: detecting the filtered thermosetting powder coating, and packaging qualified products;
(6) finished products are put in storage: and transferring the packaged finished product into a warehouse.
3. The method for preparing a thermosetting powder coating according to claim 2, wherein the thickness of the flake in the step (2) is 0.5 to 1.5mm, and the cooling temperature of the cooler is 5 to 20 ℃.
4. The method of claim 2, wherein in the step (4), the frequency of the primary mill of the mill is 45-50Hz, the frequency of the secondary mill is 28-33Hz, and the feeding frequency of the mill is 25-30 Hz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110141507.9A CN114836108A (en) | 2021-02-02 | 2021-02-02 | Thermosetting powder coating coated on synthetic material product and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110141507.9A CN114836108A (en) | 2021-02-02 | 2021-02-02 | Thermosetting powder coating coated on synthetic material product and preparation method thereof |
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| CN202110141507.9A Pending CN114836108A (en) | 2021-02-02 | 2021-02-02 | Thermosetting powder coating coated on synthetic material product and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101124283A (en) * | 2004-12-01 | 2008-02-13 | 杜邦强力涂料斯堪的纳维股份公司 | Powder coating composition for coating surfaces of heat-sensitive substrates |
| CN106398482A (en) * | 2016-08-30 | 2017-02-15 | 安徽美佳新材料股份有限公司 | Low-temperature curing hammer tone powder coating and preparation method thereof |
| CN111253841A (en) * | 2020-03-11 | 2020-06-09 | 浙江绿环新材料科技有限公司 | Low-temperature curing outdoor super-weather-resistant and corrosion-resistant powder coating and preparation method thereof |
-
2021
- 2021-02-02 CN CN202110141507.9A patent/CN114836108A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101124283A (en) * | 2004-12-01 | 2008-02-13 | 杜邦强力涂料斯堪的纳维股份公司 | Powder coating composition for coating surfaces of heat-sensitive substrates |
| CN106398482A (en) * | 2016-08-30 | 2017-02-15 | 安徽美佳新材料股份有限公司 | Low-temperature curing hammer tone powder coating and preparation method thereof |
| CN111253841A (en) * | 2020-03-11 | 2020-06-09 | 浙江绿环新材料科技有限公司 | Low-temperature curing outdoor super-weather-resistant and corrosion-resistant powder coating and preparation method thereof |
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Application publication date: 20220802 |