CN103320009A - High-temperature-resistant black sand grain powder paint preparation method - Google Patents
High-temperature-resistant black sand grain powder paint preparation method Download PDFInfo
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- CN103320009A CN103320009A CN2013102242674A CN201310224267A CN103320009A CN 103320009 A CN103320009 A CN 103320009A CN 2013102242674 A CN2013102242674 A CN 2013102242674A CN 201310224267 A CN201310224267 A CN 201310224267A CN 103320009 A CN103320009 A CN 103320009A
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Abstract
The invention relates to powder paint, and especially relates to a high-temperature-resistant black sand grain powder paint preparation method. The powder paint is prepared from the materials of: silicone resin, epoxy resin, polyester resin, low-melting-point glass powder, mica powder, high-temperature-resistant black paint, a sand grain agent, and other additives. According to the method, the materials are precisely weighed according to a composition, and are mixed for 6-8min in a high-speed mixer; the mixed material is extruded under a temperature of 90-100 DEG C by using an extruder; the extruded material is cooled and crushed, and is crushed into powder particles with an average particle size of 30-33 micrometers; the powder is sieved by using a 180-mesh sieve; and the finished product is packaged. According to the technical scheme provided by the invention, silicone resin and normal-temperature-cured conventional resin are blended, such that the entire system can be cured and crosslinked into a film under normal temperature, and has excellent physical performances. The silicone resin can resist temperature of at least 500 DEG C. Before the low-melting-point glass powder is formed into a film, a coating is prevented from cracking and falling.
Description
Technical field
The present invention relates to powder coating, relate in particular to a kind of preparation method of resistant to elevated temperatures black grit powder coating.
Technical background
Heat Resistant Powder Coatings can be widely used in the industries such as electrical equipment, metallurgy, oil, aviation field, chemical industry, medicine, food various high temperature resistant equipment (such as oven, warm-air drier, high-power lamp decoration, caliduct, automobile and motorcycle silencer, High Temperature Furnaces Heating Apparatus, chimney etc.).Although than the oil paint environmental protection, promote the use of because its cost is too high and need hot setting (minimum 230 ℃ * 20 minutes of condition of cure) to limit it.Developing low-cost ambient cure Heat Resistant Powder Coatings can make the powder coating of environmental protection replace paint to be applied to above-mentioned various high temperature resistant equipment.
(application number: 201210192938.9 applyings date: 2012-06-12) disclose a kind of epoxy powder coating and uses thereof, described coating comprises Chinese invention patent by weight: E-12 Resins, epoxy: 20～40, vibrin: 20～40, silicone resin: 6～25, pigment: 2～15.Described coating can obtain by conventional powder coating preparation method.
Summary of the invention
The preparation method who the purpose of this invention is to provide a kind of resistant to elevated temperatures black grit powder coating, the powder coating solidification condition of the method preparation is easy, and has improved the temperature tolerance of product.
In order to realize first above-mentioned purpose, the present invention has adopted following technical scheme:
A kind of preparation method of resistant to elevated temperatures black grit powder coating, this powder coating is prepared by following material by weight percentage:
The method places high-speed mixer to mix 6-8 minutes according to forming the accurate weighing material; Extrude under 90-100 ℃ temperature with forcing machine after the mixing of materials; Pulverizing with pulverizer after the extruded stock cooling is broken is that median size is the powder particle of 30-33 micron; Sieve with 180 eye mesh screens again, be packaged at last finished product.
As preferably, this powder coating is prepared by following material by weight percentage:
As preferred again, this powder coating is prepared by following material by weight percentage:
As preferably, other auxiliary agent is one or more in Hardening agent, the flow agent.
As preferred again, described other auxiliary agent is 0.1～0.5% Hardening agent, 0.5～1.0% flow agent.
As preferably, the oxirane value 0.12-0.125/100g of described Resins, epoxy, described vibrin are that acid number is the carboxyl end groups vibrin of 68-72mgKOH/g.As preferred again, described Resins, epoxy is selected E-12 Resins, epoxy.
As preferably, described high temperature resistant black pigment is that ferromanganese is black.
As preferably, described mica powder is sheet mica.It horizontally can stop each coating internal communication of heat in coating, increase the temperature tolerance of paint film.
The present invention is owing to having adopted above-mentioned technical scheme, adopt the conventional resin collocation of silicone resin and ambient cure, so that whole system at normal temperatures can the curing cross-linked film forming, and has necessary physicals, heatproof is more than 500 ℃ at least for silicone resin, and its coating can not ftracture and come off before the glass powder with low melting point film forming.In addition; the present invention has used glass powder with low melting point, and this material can play the effect of two-step film forming at hot stage more than 400 ℃, and the inorganic coating that forms under the silicone resin high temperature is bonded in base material; coating is not ftractureed do not come off, continuation is decorated base material and is protected.
Technical target of the product of the present invention is as follows:
Condition of cure is 200 ℃ * 10 minutes;
Hardness 〉=H;
Glossiness 3-5%;
Sticking power≤1 grade;
Shock-resistant 50kg.cm;
Salt spray resistance 500h is unchanged.
Embodiment
Embodiment 1
Press the composition of prescription shown in the table 1 accurate weighing material, place high-speed mixer to mix 6-8 minutes; Extrude under 90-100 ℃ temperature with forcing machine after the mixing of materials; Pulverizing with pulverizer after the extruded stock cooling is broken is that median size is the powder particle of 30-33 micron; Sieve with 180 eye mesh screens again, be packaged at last finished product.
Table 1 ambient cure is high temperature resistant (600 ℃) low-cost black grit powder formulation for coating material (weight percent)
| Material | % |
| Silicone resin | 25 |
| Resins, epoxy | 13 |
| Vibrin | 13 |
| Glass powder with low melting point | 20 |
| Ferromanganese is black | 8 |
| Mica powder | 19 |
| The sand streak agent | 0.3 |
| The Hardening agent | 0.7 |
| Flow agent | 1 |
Press above-described embodiment gained powder coating, adopt following spraying and test technology: finished product is sprayed on the 0.6mm iron plate through electrostatic gun and does detection, thickness is 40-60 microns, and iron plate is carried out Performance Detection to coating after 200 ℃ of Electric heat ovens solidify 10 minutes, and test result is shown in Table 2.
Table 2 ambient cure is high temperature resistant (600 ℃) low-cost black grit powder coating property
| Pencil hardness | H |
| Glossiness (60 °) | 4% |
| Sticking power (cross-hatching) | 0 grade |
| Shock-resistant (50kg.cm square impact) | By |
| Temperature tolerance (600 ℃, 3 hours) | Come off without cracking |
Embodiment 2
Press the composition of prescription shown in the table 3 accurate weighing material, place high-speed mixer to mix 6-8 minutes; Extrude under 90-100 ℃ temperature with forcing machine after the mixing of materials; Pulverizing with pulverizer after the extruded stock cooling is broken is that median size is the powder particle of 30-33 micron; Sieve with 180 eye mesh screens again, be packaged at last finished product.
Table 3 ambient cure is high temperature resistant (600 ℃) low-cost black grit powder formulation for coating material (weight percent)
| Material | % |
| Silicone resin | 25 |
| Resins, epoxy | 10 |
| Vibrin | 15 |
| Glass powder with low melting point | 20 |
| Ferromanganese is black | 8 |
| Mica powder | 20 |
| The sand streak agent | 0.3 |
| The Hardening agent | 0.7 |
| Flow agent | 1 |
Press above-described embodiment gained powder coating, adopt following spraying and test technology: finished product is sprayed on the 0.6mm iron plate through electrostatic gun and does detection, thickness is 40-60 microns, and iron plate is carried out Performance Detection to coating after 200 ℃ of Electric heat ovens solidify 10 minutes, and test result is shown in Table 4.
Table 4 ambient cure is high temperature resistant (600 ℃) low-cost black grit powder coating property
| Pencil hardness | H |
| Glossiness (60 °) | 4% |
| Sticking power (cross-hatching) | 0 grade |
| Shock-resistant (50kg.cm square impact) | By |
| Temperature tolerance (600 ℃, 3 hours) | Come off without cracking |
Embodiment 3
Press the composition of prescription shown in the table 5 accurate weighing material, place high-speed mixer to mix 6-8 minutes; Extrude under 90-100 ℃ temperature with forcing machine after the mixing of materials; Pulverizing with pulverizer after the extruded stock cooling is broken is that median size is the powder particle of 30-33 micron; Sieve with 180 eye mesh screens again, be packaged at last finished product.
Table 5 ambient cure is high temperature resistant (600 ℃) low-cost black grit powder formulation for coating material (weight percent)
| Material | % |
| Silicone resin | 30 |
[0045]?
| Resins, epoxy | 10 |
| Vibrin | 10 |
| Glass powder with low melting point | 20 |
| Ferromanganese is black | 8 |
| Mica powder | 15 |
| The sand streak agent | 0.3 |
| The Hardening agent | 0.7 |
| Flow agent | 1 |
Press above-described embodiment gained powder coating, adopt following spraying and test technology: finished product is sprayed on the 0.6mm iron plate through electrostatic gun and does detection, thickness is 40-60 microns, and iron plate is carried out Performance Detection to coating after 200 ℃ of Electric heat ovens solidify 10 minutes, and test result is shown in Table 6.
Table 6 ambient cure is high temperature resistant (600 ℃) low-cost black grit powder coating property
| Pencil hardness | H |
| Glossiness (60 °) | 4% |
| Sticking power (cross-hatching) | 0 grade |
| Shock-resistant (50kg.cm square impact) | By |
| Temperature tolerance (600 ℃, 3 hours) | Come off without cracking |
Embodiment 4
Press the composition of prescription shown in the table 7 accurate weighing material, place high-speed mixer to mix 6-8 minutes; Extrude under 90-100 ℃ temperature with forcing machine after the mixing of materials; Pulverizing with pulverizer after the extruded stock cooling is broken is that median size is the powder particle of 30-33 micron; Sieve with 180 eye mesh screens again, be packaged at last finished product.
Table 7 ambient cure is high temperature resistant (600 ℃) low-cost black grit powder formulation for coating material (weight percent)
| Material | % |
| Silicone resin | 30 |
| Resins, epoxy | 10 |
| Vibrin | 10 |
| Glass powder with low melting point | 20 |
| Ferromanganese is black | 8 |
| Mica powder | 20 |
| The Hardening agent | 1.0 |
[0053]?
| Flow agent | 1.0 |
Press above-described embodiment gained powder coating, adopt following spraying and test technology: finished product is sprayed on the 0.6mm iron plate through electrostatic gun and does detection, thickness is 40-60 microns, and iron plate is carried out Performance Detection to coating after 200 ℃ of Electric heat ovens solidify 10 minutes, and test result is shown in Table 8.
Table 8 ambient cure is high temperature resistant (600 ℃) low-cost black grit powder coating property
| Pencil hardness | H |
| Glossiness (60 °) | 4% |
| Sticking power (cross-hatching) | 0 grade |
| Shock-resistant (50kg.cm square impact) | By |
| Temperature tolerance (600 ℃, 3 hours) | Come off without cracking |
Embodiment 5
Press the composition of prescription shown in the table 9 accurate weighing material, place high-speed mixer to mix 6-8 minutes; Extrude under 90-100 ℃ temperature with forcing machine after the mixing of materials; Pulverizing with pulverizer after the extruded stock cooling is broken is that median size is the powder particle of 30-33 micron; Sieve with 180 eye mesh screens again, be packaged at last finished product.
Table 9 ambient cure is high temperature resistant (600 ℃) low-cost black grit powder formulation for coating material (weight percent)
| Material | % |
| Silicone resin | 35 |
| Resins, epoxy | 10 |
| Vibrin | 10 |
| Glass powder with low melting point | 20 |
| Ferromanganese is black | 5 |
| Mica powder | 20 |
Press above-described embodiment gained powder coating, adopt following spraying and test technology: finished product is sprayed on the 0.6mm iron plate through electrostatic gun and does detection, thickness is 40-60 microns, and iron plate is carried out Performance Detection to coating after 200 ℃ of Electric heat ovens solidify 10 minutes, and test result is shown in Table 10.
Table 10 ambient cure is high temperature resistant (600 ℃) low-cost black grit powder coating property
| Pencil hardness | H |
| Glossiness (60 °) | 4% |
| Sticking power (cross-hatching) | 0 grade |
| Shock-resistant (50kg.cm square impact) | By |
[0064]?
| Temperature tolerance (600 ℃, 3 hours) | Come off without cracking |
Claims (9)
1. the preparation method of a resistant to elevated temperatures black grit powder coating is characterized in that this powder coating is prepared by following material by weight percentage:
The method places high-speed mixer to mix 6-8 minutes according to forming the accurate weighing material; Extrude under 90-100 ℃ temperature with forcing machine after the mixing of materials; Pulverizing with pulverizer after the extruded stock cooling is broken is that median size is the powder particle of 30-33 micron; Sieve with 180 eye mesh screens again, be packaged at last finished product.
2. the preparation method of a kind of resistant to elevated temperatures black grit powder coating according to claim 1 is characterized in that this powder coating is prepared by following material by weight percentage:
3. the preparation method of a kind of resistant to elevated temperatures black grit powder coating according to claim 1 is characterized in that this powder coating is prepared by following material by weight percentage:
4. the preparation method of the described a kind of resistant to elevated temperatures black grit powder coating of any one claim is characterized in that other auxiliary agent is one or more in Hardening agent, the flow agent according to claim 1～3.
5. the preparation method of a kind of resistant to elevated temperatures black grit powder coating according to claim 4 is characterized in that described other auxiliary agent is 0.1～0.5% Hardening agent, 0.5～1.0% flow agent.
6. the preparation method of the described a kind of resistant to elevated temperatures black grit powder coating of any one claim according to claim 1～3, the oxirane value 0.12-0.125/100g that it is characterized in that Resins, epoxy, described vibrin are that acid number is the carboxyl end groups vibrin of 68-72mgKOH/g.
7. the preparation method of the described a kind of resistant to elevated temperatures black grit powder coating of any one claim according to claim 1～3 is characterized in that Resins, epoxy selects E-12 Resins, epoxy.
8. the preparation method of the described a kind of resistant to elevated temperatures black grit powder coating of any one claim is characterized in that high temperature resistant black pigment is that ferromanganese is black according to claim 1～3.
9. the preparation method of the described a kind of resistant to elevated temperatures black grit powder coating of any one claim is characterized in that mica powder is sheet mica according to claim 1～3.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113522696A (en) * | 2021-07-19 | 2021-10-22 | 常州嘉霖灯饰有限公司 | Lamp surface sand grain lime treatment process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101928502A (en) * | 2009-06-19 | 2010-12-29 | 扬州市金晨化工有限公司 | Anti-corrosion epoxy powder coating and preparation method thereof |
| CN102690584A (en) * | 2012-06-12 | 2012-09-26 | 天长市巨龙车船涂料有限公司 | Epoxy resin powder paint and application thereof |
| CN103073979A (en) * | 2012-12-10 | 2013-05-01 | 天津翔盛粉末涂料有限公司 | High temperature resistant secondary sintering curing type powdery coating |
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2013
- 2013-06-05 CN CN2013102242674A patent/CN103320009A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101928502A (en) * | 2009-06-19 | 2010-12-29 | 扬州市金晨化工有限公司 | Anti-corrosion epoxy powder coating and preparation method thereof |
| CN102690584A (en) * | 2012-06-12 | 2012-09-26 | 天长市巨龙车船涂料有限公司 | Epoxy resin powder paint and application thereof |
| CN103073979A (en) * | 2012-12-10 | 2013-05-01 | 天津翔盛粉末涂料有限公司 | High temperature resistant secondary sintering curing type powdery coating |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113522696A (en) * | 2021-07-19 | 2021-10-22 | 常州嘉霖灯饰有限公司 | Lamp surface sand grain lime treatment process |
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Application publication date: 20130925 |