CN105057573A - High-permeability water-based paint containing nanometer activated carbon for lost foam casting and manufacturing method of water-based paint - Google Patents
High-permeability water-based paint containing nanometer activated carbon for lost foam casting and manufacturing method of water-based paint Download PDFInfo
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- CN105057573A CN105057573A CN201510455983.2A CN201510455983A CN105057573A CN 105057573 A CN105057573 A CN 105057573A CN 201510455983 A CN201510455983 A CN 201510455983A CN 105057573 A CN105057573 A CN 105057573A
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Abstract
The invention relates to the technical field of lost foam casting, in particular to high-permeability water-based paint containing nanometer activated carbon for lost foam casting and a manufacturing method of the water-based paint. According to the paint, magnesite and graphite powder with the different grain sizes are used as refractory aggregates, and a refractory coating is good in permeability, smooth and tough; a talcum powder and sodium carboxymethylcellulose mixed sizing agent is used as a suspension agent, so that the paint has the good suspension property and thixotropy, and the lubricating property of the surface of the coating can be enhanced; added nanometer activated carbon is good in adsorptivity and gas and liquid generated in the pouring process are rapidly adsorbed, and adverse effects are prevented from being generated on molten metal forming; polyamide wax is dispersed into the coating, and the leveling property of the sizing agent can be improved; and rapid melting is performed in the pouring process, so that the permeability of the coating is further improved. According to the obtained paint, the obtained coating is firm and good in permeability, stripping is easy, molten metal is not polluted, and the quality of castings is effectively improved.
Description
Technical field
The present invention relates to Technology of EPC field, be specifically related to a kind of highly-breathable Water-based coating for lost foam casting containing active carbon nanoparticles and preparation method thereof.
Background technology
Refractory Coating for Lost Foam Casting refers to one deck handtailor coating being coated in apperance outer surface in lost foam casting process, it plays critical effect in casting process, because apperance is made up of foamed plastics, the character such as gas permeability, strength of coating, rheological characteristic of coating all will produce vital impact to cast article, the lost foam paint of function admirable should meet: (1) can assist the intensity and rigidity that improve foam plastics mould, prevents apperance from destroying and distortion; (2) there is buffer action, molten metal and model are separated, prevent molten metal from infiltrating in dry sand, prevent cast(ing) surface from forming defect; (3) permeation functions, gets rid of apperance in time and decomposes the gas or liquid that produce, prevent foundry goods from occurring pore, carbon black defect etc.; (4) good sintering fissility, anti-sand viscosity, anti-metal liquid aggressivity etc. will be had; (5) characteristic such as good wetability, being coated with property, the feature of environmental protection, heat endurance, protection against the tide will be had.
Lost foam paint composition mainly comprises the compositions such as refractory aggregate, bonding agent, solvent, suspending agent and various additives, the adhesive properties used by it is divided and is mainly divided into several classes such as water based paint, alcohol-base paint, cold coating, wherein water based paint because cost lower apply in actual production comparatively extensive, but water based paint exists when coating is cleared up easily defeated and dispersed, easy scab, and the serviceability of most of product still existing defects, do not reach foregoing effect.
Summary of the invention
The object of the invention is to, prepare a kind of highly-breathable Water-based coating for lost foam casting containing active carbon nanoparticles, have high strength, highly-breathable to obtain, be easy to peel off the apperance coating of clearing up, to achieve these goals, the technical solution used in the present invention is as follows:
A kind of highly-breathable Water-based coating for lost foam casting containing active carbon nanoparticles, it is characterized in that, this coating is made up of the raw material of following weight portion: 180-200 order magnesia 40-50,200-250 order graphite powder 15-20, talcum powder 2-3, active carbon nanoparticles 1-1.5, Ludox 2-3, solid content are polyamide wax emulsion 6-8, the OP-100.02-0.03 of 20-25%, polyquaternium 0.001-0.002, defoamer 0.01-0.02, white glue with vinyl 2-3, sodium carboxymethylcellulose 0.2-0.3, soft water 30-35.
The preparation method of described a kind of highly-breathable Water-based coating for lost foam casting containing active carbon nanoparticles, it is characterized in that, described preparation method is:
(1) first OP-10, sodium carboxymethylcellulose are dropped in soft water, be stirred to after dissolving completely, drop into active carbon nanoparticles, talcum powder, ultrasonic high-speed stirred makes it dispersed in the solution, add polyamide wax emulsion more subsequently, be uniformly mixed grinding 30-40min, gained mixed slurry is for subsequent use;
(2) drop in agitator together with the slurry prepared by magnesia, graphite powder and the step (1) of 15-20 weight portion, after high-speed stirred dispersion 30-40min, add other leftover materials all again, and add soft water according to required slurry density, continue dispersed with stirring 40-50min again, to obtain final product.
The magnesia that coating of the present invention there are differences with particle diameter, graphite powder is as refractory aggregate, the gas permeability of this refractory coating is good, smooth tough and tensile, with talcum powder, sodium carboxymethylcellulose mixed slurry is as suspending agent, coating is made to have good suspension and thixotropy, the lubricity of coating surface can also be strengthened, the active carbon nanoparticles excellent adsorption added, to the gas liquid quick adsorption produced in casting process, prevent it to the shaping generation harmful effect of molten metal, the levelability of slurry can be improved after polyamide wax dispersion in the coating, and in casting process fast melt, further raising coating's permeability, the paint coatings that this invention prepares is firm easily ventilative, is easy to peel off, does not pollute molten metal, effectively improve the quality of foundry goods.
Detailed description of the invention
Embodiment
The coating of the present embodiment is made up of the raw material of following weight portion: 200 order magnesia 50,250 order graphite powders 15, talcum powder 2.5, active carbon nanoparticles 1.2, Ludox 2.5, solid content are polyamide wax emulsion 8, OP-100.03, polyquaternium 0.001, defoamer 0.01, white glue with vinyl 2.5, sodium carboxymethylcellulose 0.2, the soft water 32 of 25%.
The preparation method of this coating is:
(1) first OP-10, sodium carboxymethylcellulose are dropped in soft water, be stirred to after dissolving completely, drop into active carbon nanoparticles, talcum powder, ultrasonic high-speed stirred makes it dispersed in the solution, add polyamide wax emulsion more subsequently, be uniformly mixed grinding 35min, gained mixed slurry is for subsequent use;
(2) drop in agitator together with the slurry prepared by magnesia, graphite powder and the step (1) of 18 weight portions, after high-speed stirred dispersion 35min, add other leftover materials all again, and add appropriate soft water, continue dispersed with stirring 45min, adjusting coating density is 60 Baume degrees, to obtain final product.
Coating property test result obtained by the present embodiment is:
| Test item | Testing result |
| Strength of coating (0.8mm thick coating) | 4.32×10 5Pa |
| Gas permeability (0.8mm thick coating × 1200 DEG C) | 4.65cm 4·(g·min) -1 |
| Suspension (24h) | 98％ |
| Once be coated with thickness δ | 0.3mm |
Claims (2)
1. the highly-breathable Water-based coating for lost foam casting containing active carbon nanoparticles, it is characterized in that, this coating is made up of the raw material of following weight portion: 180-200 order magnesia 40-50,200-250 order graphite powder 15-20, talcum powder 2-3, active carbon nanoparticles 1-1.5, Ludox 2-3, solid content are polyamide wax emulsion 6-8, the OP-100.02-0.03 of 20-25%, polyquaternium 0.001-0.002, defoamer 0.01-0.02, white glue with vinyl 2-3, sodium carboxymethylcellulose 0.2-0.3, soft water 30-35.
2. the preparation method of a kind of highly-breathable Water-based coating for lost foam casting containing active carbon nanoparticles as claimed in claim 1, it is characterized in that, described preparation method is:
(1) first OP-10, sodium carboxymethylcellulose are dropped in soft water, be stirred to after dissolving completely, drop into active carbon nanoparticles, talcum powder, ultrasonic high-speed stirred makes it dispersed in the solution, add polyamide wax emulsion more subsequently, be uniformly mixed grinding 30-40min, gained mixed slurry is for subsequent use;
(2) drop in agitator together with the slurry prepared by magnesia, graphite powder and the step (1) of 15-20 weight portion, after high-speed stirred dispersion 30-40min, then add other leftover materials all, and add soft water according to required slurry density, continue dispersed with stirring 40-50min again, to obtain final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510455983.2A CN105057573A (en) | 2015-07-27 | 2015-07-27 | High-permeability water-based paint containing nanometer activated carbon for lost foam casting and manufacturing method of water-based paint |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510455983.2A CN105057573A (en) | 2015-07-27 | 2015-07-27 | High-permeability water-based paint containing nanometer activated carbon for lost foam casting and manufacturing method of water-based paint |
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| CN105057573A true CN105057573A (en) | 2015-11-18 |
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| CN201510455983.2A Pending CN105057573A (en) | 2015-07-27 | 2015-07-27 | High-permeability water-based paint containing nanometer activated carbon for lost foam casting and manufacturing method of water-based paint |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105522103A (en) * | 2016-01-11 | 2016-04-27 | 明光市留香泵业有限公司 | Carbon-nanofiber-enhanced light low-carbon-residue water-based paint for evaporative-pattern casting and manufacturing method thereof |
| CN105562593A (en) * | 2016-01-11 | 2016-05-11 | 明光市留香泵业有限公司 | Low-carbon-residue lost foam casting water-based paint with nano calcium carbonate enhancement function and preparation method of water-based paint |
| CN105598357A (en) * | 2016-01-19 | 2016-05-25 | 安徽涌畅铸件有限公司 | Lost foam coating with high fire resistance and preparation method of lost foam coating |
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| GB878969A (en) * | 1960-05-06 | 1961-10-04 | Colorado Fuel & Iron Corp | Improvements in mold coating compositions |
| JPH0413437A (en) * | 1990-05-07 | 1992-01-17 | Kawasaki Steel Corp | Molding material for casting high melting point active metal |
| CN102366816A (en) * | 2011-10-11 | 2012-03-07 | 许立新 | Preparation method of water-based coating for lost foam casting |
| CN103056288A (en) * | 2013-01-25 | 2013-04-24 | 马鞍山市华达冶金机械有限公司 | Lost foam casting paint for chromium-containing cast iron and preparation method thereof |
| CN103331410A (en) * | 2013-01-29 | 2013-10-02 | 南京市溧水中山铸造有限公司 | Novel coating material with high suspension and low concentration, coating method thereof and applications thereof |
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2015
- 2015-07-27 CN CN201510455983.2A patent/CN105057573A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB878969A (en) * | 1960-05-06 | 1961-10-04 | Colorado Fuel & Iron Corp | Improvements in mold coating compositions |
| JPH0413437A (en) * | 1990-05-07 | 1992-01-17 | Kawasaki Steel Corp | Molding material for casting high melting point active metal |
| CN102366816A (en) * | 2011-10-11 | 2012-03-07 | 许立新 | Preparation method of water-based coating for lost foam casting |
| CN103056288A (en) * | 2013-01-25 | 2013-04-24 | 马鞍山市华达冶金机械有限公司 | Lost foam casting paint for chromium-containing cast iron and preparation method thereof |
| CN103331410A (en) * | 2013-01-29 | 2013-10-02 | 南京市溧水中山铸造有限公司 | Novel coating material with high suspension and low concentration, coating method thereof and applications thereof |
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| 李远才: "《铸造涂料及应用》", 31 July 2007 * |
| 樊自田等: "《水玻璃砂工艺原理及应用技术》", 31 March 2004 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105522103A (en) * | 2016-01-11 | 2016-04-27 | 明光市留香泵业有限公司 | Carbon-nanofiber-enhanced light low-carbon-residue water-based paint for evaporative-pattern casting and manufacturing method thereof |
| CN105562593A (en) * | 2016-01-11 | 2016-05-11 | 明光市留香泵业有限公司 | Low-carbon-residue lost foam casting water-based paint with nano calcium carbonate enhancement function and preparation method of water-based paint |
| CN105598357A (en) * | 2016-01-19 | 2016-05-25 | 安徽涌畅铸件有限公司 | Lost foam coating with high fire resistance and preparation method of lost foam coating |
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Application publication date: 20151118 |