CN101020402A - Powder paint for casting - Google Patents
Powder paint for casting Download PDFInfo
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- CN101020402A CN101020402A CN 200610172642 CN200610172642A CN101020402A CN 101020402 A CN101020402 A CN 101020402A CN 200610172642 CN200610172642 CN 200610172642 CN 200610172642 A CN200610172642 A CN 200610172642A CN 101020402 A CN101020402 A CN 101020402A
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- agent
- molecular sieve
- powdery paints
- foundry goods
- pinhole
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Abstract
The present invention relates to one kind of powder paint for casting, and aims at solving the problem of existing pinhole in electrostatic painted surface of casting. The powder paint consists of film forming agent of resin, curing agent, catalyst, wetting and leveling agent, hole eliminating agent, pigment, stuffing and pinhole preventing agent of molecular sieve. It can eliminate pinholes of diameter smaller than 0.1 mm from the surface of casting.
Description
The present invention relates to a kind of powdery paints, belong to the foundry goods powdery paints.
Powdery paints is a kind of novel solventless coatings; powder coating and their application is with its 100% solid branch; VOC free discharging in production and the construction; prevented the generation of public hazards; help environmental protection; simultaneously degree of utilization is up to 90%～95%, short, the high remarkable preceence of production efficiency of application cycle, and use every field such as household electrical appliances, machinery, electronics, building, chemical industry, space flight and aviation, mine metallurgy widely.But when workpiece is ironcasting,, not only influence attractive in appearancely, and influence its antiseptic property because the pore that has of ironcasting itself makes that film coated surface has just had pin hole inevitably behind the ironcasting powder coating and their application.For addressing this problem, general preceding conduction putty and the fore-warming way of workpiece of beating of powder coating and their application that adopt though these measures have certain effect, all can not thoroughly be dealt with problems in the production.
Summary of the invention
Purpose of the present invention is intended to solve the ironcasting powder coating and their application, and film coated surface produces the problem of pin hole.The invention provides a kind of foundry goods powdery paints, use this foundry goods powdery paints,, just can eliminate in Iron Casting Surface and obtain the ironing surface effect of filming of ordinary steel according to general coating process application foundry goods.Can reduce technology, save production time and cost, raise the efficiency and product design.
Behind the ironcasting application powdery paints, when ironcasting toasted, the pore that ironcasting itself has was covered by coating, form air bag, air expanded by heating in the air bag makes film coated surface form gas bag, the formation pin hole if the further effect of the air that gas bag is expanded in the air bag will be broken; If the air that gas bag is expanded in the air bag further acts on, gas bag takes place to break, the coating fusion levelling of film coated surface, when ironcasting cooled off through toasting, the air in the air bag was met cold contraction, and film coated surface is sunk again and has been formed flake.Pin hole and flake all are flaws of film coated surface.
The technical solution used in the present invention is, adds anti-pinhole agent in ordinary powder coating, and this anti-pinhole agent itself has the hole.After in ordinary powder coating, adding anti-pinhole agent, filming that the powdery paints fusion forms just had the hole, when ironcasting toasts, the pore that ironcasting itself has is covered by coating, form air bag, the air expanded by heating in the air bag, the hole of being filmed absorbs, film coated surface does not just produce pin hole because surface tension effects does not form gas bag yet; When ironcasting through baking during after cooling, the air in the air bag is met cold contraction, the hole of filming can discharge air again, film coated surface can not shunk because of the air bag of matrix to sink and be formed flake.So just can make the flaw of ironcasting film coated surface free of pinholes and flake.
Anti-pinhole agent can select to have the molecular sieve in hole, and X type molecular sieve, A type molecular sieve, opening diameter are that 3～10 all can.Molecular sieve before use will be 120 ℃ of bakings 2 hours, to remove moisture and other volatile goods and materials.
Embodiment 1
Resin: epoxy resin 65
Curing agent: dicyandiamide 2.8
Catalyst: glyoxal ethyline 0.1
Moistening flatting agent polyacrylic resin 0.5
Other auxiliary agents 0.6
Pigment titanium white 20
Compound barium sulfate 10
Anti-pinhole agent 3A molecular sieve 3
Technological process: each component materials that will prepare, the unified adding in the high-speed mixer, premix and about 5～10 minutes, taking-up enters heating and melting in the screw extruder, 70～90 ℃ of feeding section temperature, 110～120 ℃ of extruding zone temperature are pressed into 1 millimeter thin slice then, enter after the cooling in the comminutor (ACM mill), broken and sizing screening 180 orders all pass through.
Ironcasting → pre-processing → spraying foundry goods powdery paints → 180 ℃/15min of baking.0.5/cm of pin hole
2, 4/cm of contrast
2
Embodiment 2
Epoxy resin 25
Alkide resin 25
Titanium dioxide 12
Zinc oxide 3
Barium sulfate 5
Levelling agent 0.6
Benzoin 0.3
3A molecular sieve 3
Technological process: each component materials that will prepare, the unified adding in the high-speed mixer, premix and about 5～10 minutes, taking-up enters heating and melting in the screw extruder, 70～90 ℃ of feeding section temperature, 110～120 ℃ of extruding zone temperature are pressed into 1 millimeter thin slice then, enter after the cooling in the comminutor (ACM mill), broken and sizing screening 180 orders all pass through.
Ironcasting → pre-processing → spraying foundry goods powdery paints → 180 ℃/15min of baking.0.5/cm of pin hole
2, 4/cm of contrast
2The surface presents small tangerine peel, and little blueness is arranged.
Embodiment 3
Epoxy resin 25
Alkide resin 25
Titanium dioxide 12
Zinc oxide 3
Barium sulfate 5
Levelling agent 0.6
Benzoin 0.3
3A molecular sieve 1.5
Technological process: each component materials that will prepare, the unified adding in the high-speed mixer, premix and about 5～10 minutes, taking-up enters heating and melting in the screw extruder, 70～90 ℃ of feeding section temperature, 110～120 ℃ of extruding zone temperature are pressed into 1 millimeter thin slice then, enter after the cooling in the comminutor (ACM mill), broken and sizing screening 180 orders all pass through.
Ironcasting → pre-processing → spraying foundry goods powdery paints → 180 ℃/15min of baking.0.5/cm of pin hole
2, 4/cm of contrast
2The surface presents small tangerine peel, and little blueness is arranged.
Embodiment 4
Epoxy resin 25
Alkide resin 25
Titanium dioxide 12
Zinc oxide 3
Barium sulfate 5
Levelling agent 0.6
Benzoin 0.3
3A molecular sieve 3
Technological process: each component materials that will prepare, the unified adding in the high-speed mixer, premix and about 5～10 minutes, taking-up enters heating and melting in the screw extruder, 70～90 ℃ of feeding section temperature, 110～120 ℃ of extruding zone temperature are pressed into 1 millimeter thin slice then, enter after the cooling in the comminutor (ACM mill), broken and sizing screening 180 orders all pass through.
Ironcasting → pre-processing → spraying foundry goods powdery paints → 180 ℃/15min of baking.3/cm of pin hole
2, 4/cm of contrast
2
Embodiment 5
Scabriculous powdery paints 100
3A molecular sieve 2
Technological process: each component materials that will prepare, the unified adding in the high-speed mixer, premix and about 5～10 minutes, taking-up enters heating and melting in the screw extruder, 70～90 ℃ of feeding section temperature, 110～120 ℃ of extruding zone temperature are pressed into 1 millimeter thin slice then, enter after the cooling in the comminutor (ACM mill), broken and sizing screening 180 orders all pass through.
Ironcasting → pre-processing → spraying foundry goods powdery paints → 180 ℃/15min of baking.0.5/cm of pin hole
2, the flat surface of no scabriculous; 4/cm of contrast
2, surperficial scabriculous.
Claims (8)
1, a kind of foundry goods powdery paints is characterized in that: be made up of following raw materials according: film forming agent (resin), with supporting curing agent, the catalyst of film forming agent; Moistening flatting agent, the sky agent that disappears, pigment, filler, anti-pinhole agent (molecular sieve).
2, foundry goods powdery paints according to claim 1 is characterized in that film forming agent can be epoxy resin, alkide resin, epoxy resin/alkide resin.
3, foundry goods powdery paints according to claim 1 is characterized in that film forming agent is an epoxy resin, and curing agent is that dicyandiamide, catalyst are glyoxal ethyline; Film forming agent is an alkide resin, and curing agent is isocyanuric acid three-glycidyl ester (TGIC); Epoxy resin/alkide resin does not add other curing agent, catalyst.
4, foundry goods powdery paints according to claim 1 is characterized in that the adding total amount critical pigment volume concentration (CPVC value) of pigment, filler, anti-pinhole agent.
5, foundry goods powdery paints according to claim 1 is characterized in that anti-pinhole agent (molecular sieve) can be X type molecular sieve, and A type molecular sieve, opening diameter are 3～10 .
6, foundry goods powdery paints according to claim 1 is characterized in that anti-pinhole agent (molecular sieve) is 0.5～10 part.
7, foundry goods powdery paints according to claim 1 is characterized in that anti-pinhole agent (molecular sieve) is 0.5～3 part.
8, foundry goods powdery paints according to claim 1 is characterized in that anti-pinhole agent (molecular sieve) is a 4A type molecular sieve, 0.5～3 part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610172642A CN100586741C (en) | 2006-10-28 | 2006-12-28 | Powder paint for casting |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610143409 | 2006-10-28 | ||
| CN200610143409.4 | 2006-10-28 | ||
| CN200610172642A CN100586741C (en) | 2006-10-28 | 2006-12-28 | Powder paint for casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101020402A true CN101020402A (en) | 2007-08-22 |
| CN100586741C CN100586741C (en) | 2010-02-03 |
Family
ID=38708312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610172642A Expired - Fee Related CN100586741C (en) | 2006-10-28 | 2006-12-28 | Powder paint for casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100586741C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942266A (en) * | 2010-09-27 | 2011-01-12 | 天津翔盛粉末涂料有限公司 | Far infrared functional powder coating special for radiator |
| CN102070974A (en) * | 2010-12-07 | 2011-05-25 | 中国电器科学研究院 | Powder coating for strengthening cross-contamination resistance and preparation method thereof |
| CN105817575A (en) * | 2016-05-27 | 2016-08-03 | 马鞍山市兴隆铸造有限公司 | Mica powder modified quartz-based lost foam paint containing silicon-boron molecular sieves and preparation method of mica powder modified quartz-based lost foam paint |
| CN107744931A (en) * | 2017-09-28 | 2018-03-02 | 浙江瀚镪自动化设备股份有限公司 | A kind of surface treatment method of ultra-thin metal corrosion-resistant finishes |
-
2006
- 2006-12-28 CN CN200610172642A patent/CN100586741C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942266A (en) * | 2010-09-27 | 2011-01-12 | 天津翔盛粉末涂料有限公司 | Far infrared functional powder coating special for radiator |
| CN102070974A (en) * | 2010-12-07 | 2011-05-25 | 中国电器科学研究院 | Powder coating for strengthening cross-contamination resistance and preparation method thereof |
| CN105817575A (en) * | 2016-05-27 | 2016-08-03 | 马鞍山市兴隆铸造有限公司 | Mica powder modified quartz-based lost foam paint containing silicon-boron molecular sieves and preparation method of mica powder modified quartz-based lost foam paint |
| CN107744931A (en) * | 2017-09-28 | 2018-03-02 | 浙江瀚镪自动化设备股份有限公司 | A kind of surface treatment method of ultra-thin metal corrosion-resistant finishes |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100586741C (en) | 2010-02-03 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100203 Termination date: 20121228 |