CN103965743A - Powder coating with excellent degassing and leveling performances for aluminum die casting - Google Patents
Powder coating with excellent degassing and leveling performances for aluminum die casting Download PDFInfo
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- CN103965743A CN103965743A CN201410187302.4A CN201410187302A CN103965743A CN 103965743 A CN103965743 A CN 103965743A CN 201410187302 A CN201410187302 A CN 201410187302A CN 103965743 A CN103965743 A CN 103965743A
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Abstract
The invention discloses a powder coating with excellent degassing and leveling performances for aluminum die casting. The powder coating comprises the following components by mass parts: 22-25 parts of epoxy resin, 40-42 parts of polyester resin, 16-18 parts of titanium dioxide, 0.8-1.2 parts of a leveling agent 922, 0.3-0.8 part of benzoin, 0.3-0.6 part of an optical brightener, 0.4-0.8 part of ultramarine EP-19, 0.05-0.06 part of Bayer red 4110, 0.003-0.007 part of Bayer iron oxide yellow 4920, 0.04-0.08 part of carbon black AS-52, 12-15 parts of calcium carbonate, 0.4-0.6 part of polyamide wax powder and 0.06-0.1 part of a loosening agent.
Description
Technical field
The present invention relates to powder coating, be specifically related to a kind of powder coating and production method thereof for die casting aluminium with good degassing performance and flow leveling.It is applicable to automotive hub powder coating technical field.
Background technology
Powder coating is widely used in all trades and professions, there is different separately requirements for different industries, automotive hub uses aluminium alloy compression casting to form, due to the problem of die-casting material production method self in die-casting material inside all in various degree there is small space, in spraying bake process, air in these spaces is understood Yin Jiawen and is emitted, thereby affects the appearance surfaces of film;
And the powder coating that has good degassing performance and a flow leveling for die casting aluminium in prior art all contains solvent, and environmental pollution is larger, has certain potential safety hazard; Therefore, a kind of new technical scheme of exigence solves above-mentioned technical problem.
Summary of the invention
The present invention, just for the technical problem existing in prior art, provides a kind of powder coating for die casting aluminium with good degassing performance and flow leveling, and this powder coating does not contain solvent, safety and environmental protection, and there is good degassing performance and flow leveling.
To achieve these goals, the technical solution used in the present invention is as follows, and a kind of powder coating for die casting aluminium with good degassing performance and flow leveling, is characterized in that, contains following composition in mass parts,
Epoxy resin 22-25 part;
Vibrin 40-42 part;
Titanium dioxide 16-18 part;
922 flow agent 0.8-1.2 parts;
St-yrax 0.3-0.8 part;
Optical brightener 0.3-0.6 part;
EP-19 ultramarine 0.4-0.8 part;
The red 4110 0.05-0.06 parts of Bayer;
Bayer iron oxide yellow 4920 0.003-0.007 parts;
Carbon black AS-52 0.04-0.08 part;
Calcium carbonate 12-15 part;
Polyamide wax powder 0.4-0.6 part;
Raising agent 0.06-0.1 part.
As a modification of the present invention, there is the powder coating of good degassing performance and flow leveling for die casting aluminium, contain following composition in mass parts,
23.8 parts of epoxy resin;
41.5 parts, vibrin;
17.8 parts of titanium dioxides;
922 1.1 parts of flow agents;
0.6 part of st-yrax;
0.5 part of optical brightener;
0.6 part, EP-19 ultramarine;
Red 4,110 0.055 parts of Bayer;
4,920 0.006 parts of Bayer iron oxide yellows;
0.07 part of carbon black AS-52;
13.404 parts, calcium carbonate;
0.5 part, polyamide wax powder;
0.08 part of raising agent.
As a modification of the present invention, described vibrin is that acid number is 35-50 mg/KOH.
A production method for die casting aluminium with the powder coating of good degassing performance and flow leveling, concrete steps are as follows;
1) raw material is weighed, and prepares raw material according to described composition and mass percent;
2) by red to epoxy resin, vibrin, titanium dioxide, 922 flow agents, st-yrax, optical brightener, EP-19 ultramarine, Bayer 4110,
Bayer iron oxide yellow 4920, carbon black AS-52, calcium carbonate, polyamide wax powder, raising agent add pre-mixing in mixing tank meter Sai Ke, and mixing time is low speed 1 minute/high speed 6 minutes; Wherein low speed is 120rpm/min, is 300rpm/min at a high speed;
3) mixing raw material of step 2 is packaged into product through compressing tablet fragmentation, the Crushing of Ultrafine of pulverizer and the sieve powder of rotating screen of the melt extruding of forcing machine, tabletting machine successively.
As a modification of the present invention, described forcing machine to melt extrude workshop section's processing parameter as follows:
I district temperature (DEG C) 55-60;
II district temperature (DEG C) 85-90;
III district temperature (DEG C) 110-115;
Forcing machine rotating speed (Hz) 45-50.
As a modification of the present invention, the Crushing of Ultrafine break section processing parameter of described pulverizer is as follows:
Main mill rotating speed (Hz) 25-35; Preferably 29,
Classification rotating speed (Hz) 30-35; Preferably 32,
Sieve number (order) 150-170,, preferably 160.
Powder coating of the present invention is applicable to the parts on automotive hub, and in this technical scheme, powder coating is not containing solvent, the very coating of solid part.Owing to not containing the necessary solvent of conventional coating, thus the characteristic that it has safety, environmental protection, can reuse, thus obtain promoting widely and applying.
The related powder coating of this technical scheme has the following advantages, the base paint of automotive hub, 1) coating with make the aluminium of wheel hub and combine closely; 2) this coating has good flow leveling; 3) coating has exhaust performance, heating in baking-curing process, after the inner air of aluminium is all got rid of, solidifying, avoids producing bubble; 4) powder coating after solidifying has good interlayer bonding force with the aluminium paint spraying above; Above-mentioned beneficial effect depends on following improvement, 1) raw material selection: select calcium carbonate as pigment extender in the present invention, to increase the sponginess of powder and the density of reduction powder, because the density of calcium carbonate and the density of polyester and epoxy approach, powder coating perpendicular flow speed before solidifying is also approached, and after solidifying, the levelling property of coatingsurface is better; 2) because this coating is low coating, also want in the above spray paint, therefore in the time of component design, must reserve suitable epoxy-activated group and make itself and paint polymerization reaction take place, increase the interlayer bonding force of powder and paint, in the present invention, epoxide group is than the excessive 10-15% of carboxylic group; 3) selection of basic filmogen, due to the high acid-respons that is easy to of aluminium reactive behavior, selects alkyd resin and epoxy resin complex reaction that acid value is low in the present invention, the chance of aluminium and acid-respons under minimizing hot conditions.It is the vibrin of 35-50mg/KOH that the present invention selects acid number; 4) select suitable air release agent, in the present invention, select the polyamide wax that wettability is good, softening temperature is low to assist degassed, utilize wax powder in melting process, to float rapidly to the characteristic of film coated surface and take the air between inside workpiece and powder particle out of coatingsurface, play degassed effect.The addition of polyamide wax is 0.4-0.6%; 5) for the homogeneity of powder coating construction, reduce the accumulation of powder, the present invention adds 0.06-0.1% raising agent in process of production, and the raising agent in the present invention is selected sial mixed looser.
Embodiment
In order to deepen the understanding of the present invention and understanding, below in conjunction with embodiment, the invention will be further described and introduction.
embodiment 1:
There is a powder coating for good degassing performance and flow leveling for die casting aluminium, contain following composition in mass parts,
22 parts of epoxy resin;
40 parts, vibrin;
16 parts of titanium dioxides;
922 0.8 part of flow agent;
0.3 part of st-yrax;
0.3 part of optical brightener;
0.4 part, EP-19 ultramarine;
Red 4,110 0.05 parts of Bayer;
4,920 0.003 parts of Bayer iron oxide yellows;
0.04 part of carbon black AS-52;
12 parts, calcium carbonate;
0.4 part, polyamide wax powder;
0.06 part of raising agent.
Described vibrin is that acid number is 35 mg/KOH.
embodiment 2:
There is a powder coating for good degassing performance and flow leveling for die casting aluminium, contain following composition in mass parts,
25 parts of epoxy resin;
42 parts, vibrin;
18 parts of titanium dioxides;
922 1.2 parts of flow agents;
0.8 part of st-yrax;
0.6 part of optical brightener;
0.8 part, EP-19 ultramarine;
Red 4,110 0.06 parts of Bayer;
4,920 0.007 parts of Bayer iron oxide yellows;
0.08 part of carbon black AS-52;
15 parts, calcium carbonate;
0.6 part, polyamide wax powder;
0.1 part of raising agent.
Described vibrin is that acid number is 50 mg/KOH.
embodiment 3:
There is a powder coating for good degassing performance and flow leveling for die casting aluminium, contain following composition in mass parts,
23.8 parts of epoxy resin;
41.5 parts, vibrin;
17.8 parts of titanium dioxides;
922 1.1 parts of flow agents;
0.6 part of st-yrax;
0.5 part of optical brightener;
0.6 part, EP-19 ultramarine;
Red 4,110 0.055 parts of Bayer;
4,920 0.006 parts of Bayer iron oxide yellows;
0.07 part of carbon black AS-52;
13.404 parts, calcium carbonate;
0.5 part, polyamide wax powder;
0.08 part of raising agent.
Described vibrin is that acid number is 40 mg/KOH.
embodiment 4:
A production method for die casting aluminium with the powder coating of good degassing performance and flow leveling, concrete steps are as follows;
1) raw material is weighed, and prepares raw material according to described composition and mass percent;
2) red to epoxy resin, vibrin, titanium dioxide, 922 flow agents, st-yrax, optical brightener, EP-19 ultramarine, Bayer 4110, Bayer iron oxide yellow 4920, carbon black AS-52, calcium carbonate, polyamide wax powder, raising agent are added to pre-mixing in mixing tank meter Sai Ke, mixing time is low speed 1 minute/high speed 6 minutes; Wherein low speed is 120rpm/min, is 300rpm/min at a high speed;
3) mixing raw material of step 2 is packaged into product through compressing tablet fragmentation, the Crushing of Ultrafine of pulverizer and the sieve powder of rotating screen of the melt extruding of forcing machine, tabletting machine successively.
As a modification of the present invention, described forcing machine to melt extrude workshop section's processing parameter as follows:
I district temperature (DEG C) 55-60;
II district temperature (DEG C) 85-90;
III district temperature (DEG C) 110-115;
Forcing machine rotating speed (Hz) 45-50.
As a modification of the present invention, the Crushing of Ultrafine break section processing parameter of described pulverizer is as follows:
Main mill rotating speed (Hz) 25-35; Preferably 29,
Classification rotating speed (Hz) 30-35; Preferably 32,
Sieve number (order) 150-170,, preferably 160.
To technique scheme powder coating test, specific targets are as follows;
Can find out, the powder coating that this technical scheme is produced has excellent performance at aspects such as water resistance and protecting against shock performances, and this coating is not containing solvent, safety and environmental protection.
It should be noted that above-described embodiment, be not used for limiting protection scope of the present invention, the equivalents of having done on the basis of technique scheme or substitute and all fall into the scope that the claims in the present invention are protected.
Claims (6)
1. a powder coating for die casting aluminium with good degassing performance and flow leveling, is characterized in that, contains following composition in mass parts,
Epoxy resin 22-25 part;
Vibrin 40-42 part;
Titanium dioxide 16-18 part;
922 flow agent 0.8-1.2 parts;
St-yrax 0.3-0.8 part;
Optical brightener 0.3-0.6 part;
EP-19 ultramarine 0.4-0.8 part;
The red 4110 0.05-0.06 parts of Bayer;
Bayer iron oxide yellow 4920 0.003-0.007 parts;
Carbon black AS-52 0.04-0.08 part;
Calcium carbonate 12-15 part;
Polyamide wax powder 0.4-0.6 part;
Raising agent 0.06-0.1 part.
2. the powder coating for die casting aluminium with good degassing performance and flow leveling according to claim 1, is characterized in that, contains following composition in mass parts,
23.8 parts of epoxy resin;
41.5 parts, vibrin;
17.8 parts of titanium dioxides;
922 1.1 parts of flow agents;
0.6 part of st-yrax;
0.5 part of optical brightener;
0.6 part, EP-19 ultramarine;
Red 4,110 0.055 parts of Bayer;
4,920 0.006 parts of Bayer iron oxide yellows;
0.07 part of carbon black AS-52;
13.404 parts, calcium carbonate;
0.5 part, polyamide wax powder;
0.08 part of raising agent.
3. the powder coating for die casting aluminium with good degassing performance and flow leveling according to claim 1 and 2, is characterized in that, described vibrin is that acid number is 35-50 mg/KOH.
4. a production method for die casting aluminium with the powder coating of good degassing performance and flow leveling, concrete steps are as follows;
1) raw material is weighed, and prepares raw material according to described composition and mass percent;
2) by red to epoxy resin, vibrin, titanium dioxide, 922 flow agents, st-yrax, optical brightener, EP-19 ultramarine, Bayer 4110,
Bayer iron oxide yellow 4920, carbon black AS-52, calcium carbonate, polyamide wax powder, raising agent add pre-mixing in mixing tank meter Sai Ke, and mixing time is low speed 1 minute/high speed 6 minutes; Wherein low speed is 120rpm/min, is 300rpm/min at a high speed;
3) mixing raw material of step 2 is packaged into product through compressing tablet fragmentation, the Crushing of Ultrafine of pulverizer and the sieve powder of rotating screen of the melt extruding of forcing machine, tabletting machine successively.
5. the production method for die casting aluminium with the powder coating of good degassing performance and flow leveling according to claim 4, described forcing machine to melt extrude workshop section's processing parameter as follows:
I district temperature (DEG C) 55-60;
II district temperature (DEG C) 85-90;
III district temperature (DEG C) 110-115;
Forcing machine rotating speed (Hz) 45-50.
6. according to having the production method of the powder coating of good degassing performance and flow leveling for die casting aluminium described in claim 4 or 5, the Crushing of Ultrafine break section processing parameter of described pulverizer is as follows:
Main mill rotating speed (Hz) 25-35;
Classification rotating speed (Hz) 30-35;
Sieve number (order) 150-170.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410187302.4A CN103965743A (en) | 2014-05-06 | 2014-05-06 | Powder coating with excellent degassing and leveling performances for aluminum die casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410187302.4A CN103965743A (en) | 2014-05-06 | 2014-05-06 | Powder coating with excellent degassing and leveling performances for aluminum die casting |
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| CN103965743A true CN103965743A (en) | 2014-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410187302.4A Pending CN103965743A (en) | 2014-05-06 | 2014-05-06 | Powder coating with excellent degassing and leveling performances for aluminum die casting |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106318122A (en) * | 2016-08-31 | 2017-01-11 | 太仓宏璟辅龙信息科技有限公司 | Environment-friendly high-gloss black coating |
| CN107236419A (en) * | 2017-07-18 | 2017-10-10 | 东莞众迪和粉末涂料有限公司 | Ceramics powdery paints |
| CN111073455A (en) * | 2019-12-31 | 2020-04-28 | 广东睿智环保科技有限责任公司 | Low-energy-consumption powder coating for coating wheel hub |
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| JP2003221550A (en) * | 2002-01-30 | 2003-08-08 | Kansai Paint Co Ltd | Powder primer for aluminum wheel |
| CN101225278A (en) * | 2008-01-31 | 2008-07-23 | 宁波市派特勒粉末涂料有限公司 | Anion powder coating |
| EP2248864A1 (en) * | 2007-03-19 | 2010-11-10 | Rohm and Haas Company | Thermosetting powders comprising curing agent adducts of polyesters and strong, flexible powder coatings made therefrom |
| CN102585660A (en) * | 2012-02-21 | 2012-07-18 | 太仓立崴涂装材料有限公司 | Defoaming powder coating |
| CN102898924A (en) * | 2012-09-28 | 2013-01-30 | 广州擎天实业有限公司 | Automobile aluminium wheel hub powdery paint suitable for bonding counterbalances and preparation method thereof |
| CN102911585A (en) * | 2012-09-28 | 2013-02-06 | 广州擎天实业有限公司 | Special primer paint for medium and high grade automobile aluminum hubs and preparation method of primer paint |
-
2014
- 2014-05-06 CN CN201410187302.4A patent/CN103965743A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003221550A (en) * | 2002-01-30 | 2003-08-08 | Kansai Paint Co Ltd | Powder primer for aluminum wheel |
| EP2248864A1 (en) * | 2007-03-19 | 2010-11-10 | Rohm and Haas Company | Thermosetting powders comprising curing agent adducts of polyesters and strong, flexible powder coatings made therefrom |
| CN101225278A (en) * | 2008-01-31 | 2008-07-23 | 宁波市派特勒粉末涂料有限公司 | Anion powder coating |
| CN102585660A (en) * | 2012-02-21 | 2012-07-18 | 太仓立崴涂装材料有限公司 | Defoaming powder coating |
| CN102898924A (en) * | 2012-09-28 | 2013-01-30 | 广州擎天实业有限公司 | Automobile aluminium wheel hub powdery paint suitable for bonding counterbalances and preparation method thereof |
| CN102911585A (en) * | 2012-09-28 | 2013-02-06 | 广州擎天实业有限公司 | Special primer paint for medium and high grade automobile aluminum hubs and preparation method of primer paint |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106318122A (en) * | 2016-08-31 | 2017-01-11 | 太仓宏璟辅龙信息科技有限公司 | Environment-friendly high-gloss black coating |
| CN107236419A (en) * | 2017-07-18 | 2017-10-10 | 东莞众迪和粉末涂料有限公司 | Ceramics powdery paints |
| CN111073455A (en) * | 2019-12-31 | 2020-04-28 | 广东睿智环保科技有限责任公司 | Low-energy-consumption powder coating for coating wheel hub |
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Application publication date: 20140806 |