CN103289516A - High temperature-resistant powder coating - Google Patents
High temperature-resistant powder coating Download PDFInfo
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- CN103289516A CN103289516A CN2013102153204A CN201310215320A CN103289516A CN 103289516 A CN103289516 A CN 103289516A CN 2013102153204 A CN2013102153204 A CN 2013102153204A CN 201310215320 A CN201310215320 A CN 201310215320A CN 103289516 A CN103289516 A CN 103289516A
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Abstract
The invention discloses a high temperature-resistant powder coating which is characterized by consisting of the following raw materials in parts by weight: 100-104 parts of epoxy resin E51, 20-25 parts of dicyandiamide, 4-6 parts of ethylenediamine, 20-24 parts of superfine barium sulfate, 10-15 parts of wollastonite powder, 10-15 parts of modification filler, 9-13 parts of oxidized polyethlene wax, 1-2 parts of polybutyl acrylate, 2-3 parts of 2-phenylimidazoline, 2-3 parts of resorcinol, 2-3 parts of benzoin, 2-3 parts of ethylene thiourea, 2-3 parts of zinc borate, 2-3 parts of zinc stearate, 5-7 parts of talcum powder and 0.7-1 part of 3-(methacryloxy)propyltrimethoxy silane. The powder coating disclosed by the invention has the advantages of high hardness and strength, good resistance to abrasion, weather and aging, tough film, acid-base resistance and strong flexibility; the added modification filler improves the dispersity and fluidity of the mixture system and is easily dispersed in the powder coating and has good compatibility with epoxy resin; after the mixing, the melting time is short; moreover, the density of the powder coating is reduced, the powdering rate is improved, the spraying area is increased, and the production cost is lowered; and the added wollastonite powder, zinc borate and talcum powder effectively isolate the damage effect of oxygen on a substrate at a high temperature, and the high temperature resistance of the high temperature-resistant powder coating under high-temperature roasting is improved.
Description
Technical field
The present invention relates generally to a kind of powder coating, relates in particular to a kind of high temperature resistant powder coating.
Background technology
Epoxy powder coating is with strong, the high temperature resistant and excellent electrical insulation capability of its bonding force, be widely used in household electrical appliances, the vehicles, fields such as hardware machinery, be one of of paramount importance coating type in the powder coating, epoxide powder coating generally is made up of Resins, epoxy, solidifying agent, pigment, filler and auxiliary agent.Resins, epoxy is the base-material in the powder coating, is important filmogen; Solidifying agent and Resins, epoxy reaction make its polymerization crosslinking, are indispensable components in the powder coating; Pigment, filler, auxiliary agent are the important component in the epoxide powder coating prescription, and their adding can effectively improve physics and the chemical property of epoxide powder coating.Wherein good filler plays skeleton function in powder coating, strengthen film performance, also can reduce the production cost of powder coating, can also improve the powder utilization of powder and spray area etc.
Summary of the invention
The object of the invention is exactly for a kind of hardness powder coating is provided.
The present invention is achieved by the following technical solutions:
A kind of high temperature resistant powder coating, it is made up of the raw material of following weight parts:
Resins, epoxy E51 100-104, Dyhard RU 100 20-25, quadrol 4-6, ultra-fine barium sulfate 20-24, wollastonite powder 10-15, modified filler 10-15, oxidized polyethlene wax 9-13, butyl polyacrylate 1-2,2-benzylimidazoline 2-3, Resorcinol 2-3, st-yrax 2-3, ethylene thiourea 2-3, zinc borate 2-3, Zinic stearas 2-3, talcum powder 5-7,3-(iso-butylene acyl-oxygen) propyl trimethoxy silicane 0.7-1;
Described modified filler is made up of the raw material of following weight parts:
Unslaked lime 90-100, stearic acid 30-50, magnesium chloride 3-5, b diammonium edta 2-3, tripoly phosphate sodium STPP 2-4,1, two (triethoxy is silica-based) ethane 1-2 of 2-, aminopropyl triethoxysilane 1-2, sorbitan monooleate 1-3, sodium polyacrylate 3-4, di-t-butyl peroxide 0.8-1, ethoxylated dodecyl alcohol 0.5-1, peregal o1-2, diisobutyl phthalate 1-2.
The preparation method of described modified filler may further comprise the steps:
(1) be 1 with unslaked lime and boiling water by mass ratio: the mixed of 8-10, digestion 4-5h, the resonance screen filter cleaner through 180 μ m further removes the gred through wet cyclone again, obtains Ca (OH)
2Suspension;
(2) with above-mentioned Ca (OH)
2Two parts of weight such as suspension is divided into, a copy of it adds b diammonium edta, magnesium chloride, the tripoly phosphate sodium STPP, 1 of above-mentioned weight part, two (triethoxy the is silica-based) ethane of 2-, the back that stirs moves in the carbonization reactor, feeds from CO
2The pure CO of steel cylinder
2With the air from air compressor machine, be mixed into and contain volume fraction 25-30%CO
2Gas react, stopped reaction when pH=6.5-7.0 adds above-mentioned sorbitan monooleate, stir a liquid;
(3) another part Ca (OH)
2Suspension adds the aminopropyl triethoxysilane of above-mentioned weight part, at 90-110 ℃ of following stirring heating 20-30 minute, gets b liquid;
(4) stearic acid with above-mentioned weight part is heated to 60-70 ℃, adds ethoxylated dodecyl alcohol, the peregal o of above-mentioned weight part, and the rising temperature is as for 80-85 ℃, constant temperature stirred 1-2 hour, under agitation condition, slowly add above-mentioned b liquid, add the back that finishes and continue to stir 1-2 hour, get the c material;
(5) a material, c expects to mix, add each raw material of residue, high speed 1500-2000 rev/min of centrifugal stirring 20-30 minute dried, and is ground into ultrafine powder, is described properties-correcting agent;
A kind of preparation method of high temperature resistant powder coating may further comprise the steps:
(1) above-mentioned each raw material mixing except butyl polyacrylate was placed the high-speed mixer mixing 8-10 minute;
(2) melt extrude 30-40 ℃ of feeding section temperature, 95-105 ℃ of melt zone temperature, 100-110 ℃ of discharging section temperature by screw extrusion press;
(3) molten materials is through the tabletting machine compressing tablet, and control thickness is sent into crushing and classification in the pulverizing mill at 1-3mm through fragmentation, isolates fine powder, foreign material etc. by cyclonic separator, and with powder sieving from going out product, the powder sieve is the 50-60 order;
(4) mix stirring with above-mentioned butyl polyacrylate, namely make finished product after sieving.
Advantage of the present invention is:
The powder coating hardness that the present invention produces, the intensity height, wear resistance, weathering resistance and resistance to deterioration are good, it is tough and tensile to film, resistance to acids and bases, snappiness is strong, the modified filler that adds has improved the dispersed and mobile of mixture systems, in powder coating, disperse easily, good with epoxy resin compatibility, mix back fusion time weak point, can also reduce the density of powder coating, improve powder utilization, increase spray area, reduce production costs, the wollastonite powder that adds, zinc borate, talcum powder has effectively completely cut off under the high temperature oxygen to the destruction of ground, thereby improves the resistance to elevated temperatures of high temperature resistant powder coating under high bake.
Embodiment
Embodiment 1
A kind of high temperature resistant powder coating, it is made up of the raw material of following weight parts (kilogram):
Resins, epoxy E51 104, Dyhard RU 100 25, quadrol 6, ultra-fine barium sulfate 24, wollastonite powder 12, modified filler 15, oxidized polyethlene wax 13, butyl polyacrylate 2,2-benzylimidazoline 3, Resorcinol 3, st-yrax 3, ethylene thiourea 3, zinc borate 3, Zinic stearas 3, talcum powder 7,3-(iso-butylene acyl-oxygen) propyl trimethoxy silicane 0.7;
Described modified filler is made up of the raw material of following weight parts:
Unslaked lime 100, stearic acid 50, magnesium chloride 5, b diammonium edta 3, tripoly phosphate sodium STPP 4,1, two (triethoxy the is silica-based) ethane 2 of 2-, aminopropyl triethoxysilane 2, sorbitan monooleate 3, sodium polyacrylate 4, di-t-butyl peroxide 0.8, ethoxylated dodecyl alcohol 0.5, peregal o2, diisobutyl phthalate 2;
The preparation method of described modified filler may further comprise the steps:
(1) be 1: 10 mixed with unslaked lime and boiling water by mass ratio, digestion 5h, the resonance screen filter cleaner through 180 μ m further removes the gred through wet cyclone again, obtains Ca (OH)
2Suspension;
(2) with above-mentioned Ca (OH)
2Two parts of weight such as suspension is divided into, a copy of it adds b diammonium edta, magnesium chloride, the tripoly phosphate sodium STPP, 1 of above-mentioned weight part, two (triethoxy the is silica-based) ethane of 2-, the back that stirs moves in the carbonization reactor, feeds from CO
2The pure CO of steel cylinder
2With the air from air compressor machine, be mixed into and contain volume fraction 30%CO
2Gas react, stopped reaction when pH=7.0 adds above-mentioned sorbitan monooleate, stir a liquid;
(3) another part Ca (OH)
2Suspension adds the aminopropyl triethoxysilane of above-mentioned weight part, 90-110 ℃ of following stirring heating 30 minutes, gets b liquid;
(4) stearic acid with above-mentioned weight part is heated to 70 ℃, adds ethoxylated dodecyl alcohol, the peregal o of above-mentioned weight part, and the rising temperature is as for 85 ℃, constant temperature stirred 2 hours, under agitation condition, slowly add above-mentioned b liquid, add the back that finishes and continue to stir 2 hours, get the c material;
(5) a material, c are expected to mix, add each raw material of residue, 2000 rev/mins of centrifugal stirrings of high speed 20-30 minute, oven dry is ground into ultrafine powder, is described properties-correcting agent.
A kind of preparation method of high temperature resistant powder coating may further comprise the steps:
(1) place high-speed mixer to mix 10 minutes above-mentioned each raw material mixing except butyl polyacrylate;
(2) melt extrude 40 ℃ of feeding section temperature, 105 ℃ of melt zone temperature, 110 ℃ of discharging section temperature by screw extrusion press;
(3) molten materials is through the tabletting machine compressing tablet, and control thickness is sent into crushing and classification in the pulverizing mill at 3mm through fragmentation, isolates fine powder, foreign material etc. by cyclonic separator, and with powder sieving from going out product, it is 60 orders that powder sieves;
(4) mix stirring with above-mentioned butyl polyacrylate, namely make finished product after sieving.
Performance test:
Appearance of film: smooth smooth, no shrinkage cavity;
1 grade of sticking power;
Anti-impact strength 〉=55Kgcm;
Pencil hardness test: 2H does not have scuffing;
Bendability: the bending of 4D diameter, finished no macroscopic crackle on the outside radius in 15 seconds;
Resist chemical (45d, 24 ℃, saturated calcium hydroxide): coating does not have foaming, softening, pore-free, viscosity no change;
Water tolerance: the steel plate that will spray powder coating of the present invention vertically places in the High pressure steam sterilizer, keep the area of steel plate 80% to soak in the distilled water that hangs over boiling, continue to place 80h under the pressure of maintenance 0.1MPa, taking out the back dries up surface water with blower, phenomenons such as coating do not have foaming, softening, variable color, get rusty, viscosity is no change also.
High thermal resistance: 400 ℃ of following high bakes 24 hours, coating did not have variable color, does not have and damage.
Claims (1)
1. high temperature resistant powder coating is characterized in that it is made up of the raw material of following weight parts:
Resins, epoxy E51 100-104, Dyhard RU 100 20-25, quadrol 4-6, ultra-fine barium sulfate 20-24, wollastonite powder 10-15, modified filler 10-15, oxidized polyethlene wax 9-13, butyl polyacrylate 1-2,2-benzylimidazoline 2-3, Resorcinol 2-3, st-yrax 2-3, ethylene thiourea 2-3, zinc borate 2-3, Zinic stearas 2-3, talcum powder 5-7,3-(iso-butylene acyl-oxygen) propyl trimethoxy silicane 0.7-1;
Described modified filler is made up of the raw material of following weight parts:
Unslaked lime 90-100, stearic acid 30-50, magnesium chloride 3-5, b diammonium edta 2-3, tripoly phosphate sodium STPP 2-4,1, two (triethoxy is silica-based) ethane 1-2 of 2-, aminopropyl triethoxysilane 1-2, sorbitan monooleate 1-3, sodium polyacrylate 3-4, di-t-butyl peroxide 0.8-1, ethoxylated dodecyl alcohol 0.5-1, peregal o1-2, diisobutyl phthalate 1-2;
The preparation method of described modified filler may further comprise the steps:
(1) be 1 with unslaked lime and boiling water by mass ratio: the mixed of 8-10, digestion 4-5h, the resonance screen filter cleaner through 180 μ m further removes the gred through wet cyclone again, obtains Ca (OH)
2Suspension;
(2) with above-mentioned Ca (OH)
2Two parts of weight such as suspension is divided into, a copy of it adds b diammonium edta, magnesium chloride, the tripoly phosphate sodium STPP, 1 of above-mentioned weight part, two (triethoxy the is silica-based) ethane of 2-, the back that stirs moves in the carbonization reactor, feeds from CO
2The pure CO of steel cylinder
2With the air from air compressor machine, be mixed into and contain volume fraction 25-30%CO
2Gas react, stopped reaction when pH=6.5-7.0 adds above-mentioned sorbitan monooleate, stir a liquid;
(3) another part Ca (OH)
2Suspension adds the aminopropyl triethoxysilane of above-mentioned weight part, at 90-110 ℃ of following stirring heating 20-30 minute, gets b liquid;
(4) stearic acid with above-mentioned weight part is heated to 60-70 ℃, adds ethoxylated dodecyl alcohol, the peregal o of above-mentioned weight part, and the rising temperature is as for 80-85 ℃, constant temperature stirred 1-2 hour, under agitation condition, slowly add above-mentioned b liquid, add the back that finishes and continue to stir 1-2 hour, get the c material;
(5) a material, c expects to mix, add each raw material of residue, high speed 1500-2000 rev/min of centrifugal stirring 20-30 minute dried, and is ground into ultrafine powder, is described properties-correcting agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310215320.4A CN103289516B (en) | 2013-05-31 | 2013-05-31 | A kind of Heat Resistant Powder Coatings |
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| CN201310215320.4A CN103289516B (en) | 2013-05-31 | 2013-05-31 | A kind of Heat Resistant Powder Coatings |
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| CN103289516A true CN103289516A (en) | 2013-09-11 |
| CN103289516B CN103289516B (en) | 2016-05-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107868575A (en) * | 2017-12-06 | 2018-04-03 | 常州大学 | A kind of low temperature resistant fireproof coating and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899253A (en) * | 2010-07-09 | 2010-12-01 | 孟鋆辉 | Wear-resistant and high temperature-resistant powder coating for preventing corrosion of inside and outside of steel pipeline |
| WO2012023216A1 (en) * | 2010-08-19 | 2012-02-23 | 株式会社Ｌｉｘｉｌ | Powder-coated aluminum building material for outdoor use |
| CN102585696A (en) * | 2012-02-13 | 2012-07-18 | 江苏大学 | Methyl phenyl silicone resin base high-temperature-resistant coating and preparation method thereof |
-
2013
- 2013-05-31 CN CN201310215320.4A patent/CN103289516B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899253A (en) * | 2010-07-09 | 2010-12-01 | 孟鋆辉 | Wear-resistant and high temperature-resistant powder coating for preventing corrosion of inside and outside of steel pipeline |
| WO2012023216A1 (en) * | 2010-08-19 | 2012-02-23 | 株式会社Ｌｉｘｉｌ | Powder-coated aluminum building material for outdoor use |
| CN102585696A (en) * | 2012-02-13 | 2012-07-18 | 江苏大学 | Methyl phenyl silicone resin base high-temperature-resistant coating and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107868575A (en) * | 2017-12-06 | 2018-04-03 | 常州大学 | A kind of low temperature resistant fireproof coating and preparation method thereof |
| CN107868575B (en) * | 2017-12-06 | 2019-12-31 | 常州大学 | Low-temperature-resistant fireproof coating and preparation method thereof |
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| CN103289516B (en) | 2016-05-25 |
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