CN101709164A - Storable low temperature cured powder coating and preparation method thereof - Google Patents
Storable low temperature cured powder coating and preparation method thereof Download PDFInfo
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- CN101709164A CN101709164A CN200910112979A CN200910112979A CN101709164A CN 101709164 A CN101709164 A CN 101709164A CN 200910112979 A CN200910112979 A CN 200910112979A CN 200910112979 A CN200910112979 A CN 200910112979A CN 101709164 A CN101709164 A CN 101709164A
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Abstract
The invention discloses a storable low temperature cured powder coating and a preparation method thereof. The powder coating mainly comprises 30 to 40 percent of epoxy resin, 19 to 29 percent of modified polyester resin, 0.5 to 1.2 percent of acrylic acid, 0.08 to 0.15 percent of phosphite ester, 20 to 38 percent of pigment and filler, 0.2 to 3 percent of W-187 low temperature curing agent, and 0.15 to 0.6 percent of curing accelerator. The method for preparing the powder coating comprises the following steps: mixing, heating, melting, extruding, tabletting, cooling, crushing, ACM-crushing and sieving all the raw materials to achieve the fineness of 180 meshes, and packing a finished product. The storage time of the powder coating is greatly prolonged, and the curing temperature is reduced; the powder coating has excellent performance, and is widely applied to surface coating and painting of hardware, electric appliances, home appliances, automobiles, furniture, mechanical equipment and the like; the energy is reduced and the using cost is reduced, so the production cost of enterprises is reduced; and the method ensures the large-scale production of the enterprises, and increases the economic benefits of the enterprises.
Description
Affiliated technical field
The invention belongs to top coat and application techniques field, specifically, the present invention relates to a kind of low temperature cured powder coating and preparation method thereof.
Background technology
In the prior art, powder coating is for a long time because of elementary low-temperature curing weak effect, be a wheat harvesting period common storage period, very easily produce caking phenomenon when storing and can't use with long-distance transport, to such an extent as to the production cost of enterprise is remained high, bring great obstruction for enterprise's scale operation, economic benefit of enterprises is brought seriously influence.
Summary of the invention
In order to overcome the above-mentioned deficiency of prior art, the object of the invention be to provide a kind of storage period long, solidification value is low, the storable low temperature cured powder coating of excellent property and preparation method thereof.
Storable low temperature cured powder coating of the present invention mainly is made up of the raw material of following weight percentage:
Resins, epoxy 30～40%
Modified polyester resin 19～29%
Vinylformic acid 0.5～1.2%
Phosphite 0.08～0.15%
Color stuffing 20～38%
Solidifying agent 0.2～3%
Curing catalyst 0.15～0.6%
Wherein, described Resins, epoxy is meant the Resins, epoxy of 1429～2222 molecular weight;
Modified polyester resin is the flexible carbochain of a kind of introducing, the hydroxy resin of glue value 56～63mgKOH/g;
Color stuffing is various toners such as titanium dioxide, barium sulfate, copper bronze, silver powder;
Solidifying agent is the W-187 low temperature curing agent;
Curing catalyst is an ammonium salt, such as: R242 four seasons ammonium salt.
Preparation method's step of the present invention is as follows:
(1) described raw material epoxy resin, modified polyester resin, vinylformic acid, phosphite, color stuffing, solidifying agent, curing catalyst are all together mixed;
(2) heat and melt extrude;
(3) compressing tablet cooling;
(4) broken and ACM pulverizes;
(5) sieve, reach 180 order fineness and promptly obtain product of the present invention: storable low temperature cured powder coating.
(6) finished product packing.
The invention has the beneficial effects as follows:
1. compare with general powder, condition of cure is from 150 ℃ of constant temperature 20min of 190 ℃ of constant temperature 15min downward modulations;
2. compare with elementary low-temperature curing powder, storage of finished products stability extended to 6 months by 1 month;
Product of the present invention is reduced 150 ℃ of constant temperature 20min with the condition of cure of former low-temperature curing powder from 190 ℃ of constant temperature 15min, original product is stored and was promptly occurred caking phenomenon in one month, can reach and not occur caking phenomenon more than 6 months storage period after the technological transformation, the period of storage that very big amplitude has prolonged powder coating, reduced solidification value, its excellent property, save energy reduces use cost, this product is extensively in five metals, electrical equipment, household electrical appliances, automobile, furniture, top coat and applications such as mechanical means, the production cost of enterprise is reduced, for enterprise's scale operation guarantees, increase the business economic benefit.
Embodiment
Below by specific embodiment the present invention is further elaborated.
Embodiment 1
Storable low temperature cured powder coating of the present invention is made up of the raw material of following weight percentage:
Molecular weight is 1600～1900 Resins, epoxy 33%
Modified polyester resin 26%
Vinylformic acid 0.6%
Phosphite 0.1%
Color stuffing 37%
W-187 low temperature curing agent 3%
R242 four seasons ammonium salt 0.3%
Its preparation process is as follows:
(1) described raw material epoxy resin, modified polyester resin, vinylformic acid, phosphite, color stuffing, solidifying agent, curing catalyst are all mixed;
(2) heat and melt extrude;
(3) compressing tablet cooling;
(4) broken and ACM pulverizes;
(5) sieve, reach 180 order fineness and promptly obtain product of the present invention: storable low temperature cured powder coating.
(6) finished product packing.
The outstanding effect of present embodiment is: storage period is long, solidification value is low, is particularly useful for the workpiece of client's workpiece based on tin alloy material, because surpass 155 ℃ of these workpiece easy deformation.
Embodiment 2
Storable low temperature cured powder coating of the present invention is made up of the raw material of following weight percentage:
Molecular weight is 1500～1650 Resins, epoxy 32%
Modified polyester resin 28%
Vinylformic acid 0.6%
Phosphite 0.1%
Color stuffing 38%
W-187 low temperature curing agent 1.1%
R242 four seasons ammonium salt 0.2%
Its preparation process is as follows:
(1) described raw material epoxy resin, modified polyester resin, vinylformic acid, phosphite, color stuffing, solidifying agent, curing catalyst are all mixed;
(2) heat and melt extrude;
(3) compressing tablet cooling;
(4) broken and ACM pulverizes;
(5) sieve, reach 180 order fineness and promptly obtain product of the present invention: storable low temperature cured powder coating.
(6) finished product packing.
The outstanding effect of present embodiment is: storage period is long, solidification value is low; Save energy reduces use cost, quality product close prices ordinary powder, cost performance height.
Embodiment 3
Storable low temperature cured powder coating of the present invention is made up of the raw material of following weight percentage:
Molecular weight is 1400～1600 Resins, epoxy 39%
Modified polyester resin 29%
Vinylformic acid 0.8%
Phosphite 0.1%
Color stuffing 30%
W-187 low temperature curing agent 1.0%
R242 four seasons ammonium salt 0.1%
Its preparation process is as follows:
(1) described raw material epoxy resin, modified polyester resin, vinylformic acid, phosphite, color stuffing, solidifying agent, curing catalyst are all mixed;
(2) heat and melt extrude;
(3) compressing tablet cooling;
(4) broken and ACM pulverizes;
(5) sieve, reach 180 order fineness and promptly obtain product of the present invention: storable low temperature cured powder coating.
(6) finished product packing.
The outstanding effect of present embodiment is: levelling is good, solidification value, and the shelf lives is long, can reach storage period more than 6 months and caking phenomenon do not occur.
Claims (3)
1. storable low temperature cured powder coating, mainly form by the raw material of following weight percentage:
Resins, epoxy 30～40%
Modified polyester resin 19～29%
Vinylformic acid 0.5～1.2%
Phosphite 0.08～0.15%
Color stuffing 20～38%
Solidifying agent 0.2～3%
Curing catalyst 0.15～0.6%
Wherein, described Resins, epoxy is meant the Resins, epoxy of 1429～2222 molecular weight; Modified polyester resin is the flexible carbochain of a kind of introducing, the hydroxy resin of glue value 56～63mgKOH/g; Color stuffing is various toners such as titanium dioxide, barium sulfate, copper bronze, silver powder; Solidifying agent is the W-187 low temperature curing agent; Curing catalyst is an ammonium salt.
2. storable low temperature cured powder coating as claimed in claim 1, particularly form by the raw material of following weight percentage:
Molecular weight is 1500～1650 Resins, epoxy 32%
Modified polyester resin 28%
Vinylformic acid 0.6%
Phosphite 0.1%
Color stuffing 38%
W-187 low temperature curing agent 1.1%
R242 four seasons ammonium salt 0.2%
3. preparation method's step of the described powder coating of preparation claim 1 is as follows:
(1) described raw material epoxy resin, modified polyester resin, vinylformic acid, phosphite, color stuffing, solidifying agent, curing catalyst are all together mixed;
(2) heat and melt extrude;
(3) compressing tablet cooling;
(4) broken and ACM pulverizes;
(5) sieve, reach 180 order fineness and promptly obtain product of the present invention: storable low temperature cured powder coating.
(6) finished product packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910112979A CN101709164A (en) | 2009-12-16 | 2009-12-16 | Storable low temperature cured powder coating and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910112979A CN101709164A (en) | 2009-12-16 | 2009-12-16 | Storable low temperature cured powder coating and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101709164A true CN101709164A (en) | 2010-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910112979A Pending CN101709164A (en) | 2009-12-16 | 2009-12-16 | Storable low temperature cured powder coating and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104119772A (en) * | 2014-06-27 | 2014-10-29 | 南京屏湖粉末材料有限公司 | High-strength powder paint |
| CN104119771A (en) * | 2014-06-27 | 2014-10-29 | 南京屏湖粉末材料有限公司 | Thermosetting epoxy resin powder paint |
| CN107033751A (en) * | 2016-12-07 | 2017-08-11 | 德阳力久云智知识产权运营有限公司 | A kind of low temperature cured powder coating and preparation method thereof |
| CN109762440A (en) * | 2018-12-20 | 2019-05-17 | 广东西敦千江粉漆科学研究有限公司 | A kind of low temperature curing type powdery paints and preparation method thereof |
-
2009
- 2009-12-16 CN CN200910112979A patent/CN101709164A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104119772A (en) * | 2014-06-27 | 2014-10-29 | 南京屏湖粉末材料有限公司 | High-strength powder paint |
| CN104119771A (en) * | 2014-06-27 | 2014-10-29 | 南京屏湖粉末材料有限公司 | Thermosetting epoxy resin powder paint |
| CN107033751A (en) * | 2016-12-07 | 2017-08-11 | 德阳力久云智知识产权运营有限公司 | A kind of low temperature cured powder coating and preparation method thereof |
| CN109762440A (en) * | 2018-12-20 | 2019-05-17 | 广东西敦千江粉漆科学研究有限公司 | A kind of low temperature curing type powdery paints and preparation method thereof |
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Open date: 20100519 |