CN104475671A - Quartz powder/expanded vermiculite composite casting coating and manufacturing method thereof - Google Patents
Quartz powder/expanded vermiculite composite casting coating and manufacturing method thereof Download PDFInfo
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- CN104475671A CN104475671A CN201410523593.XA CN201410523593A CN104475671A CN 104475671 A CN104475671 A CN 104475671A CN 201410523593 A CN201410523593 A CN 201410523593A CN 104475671 A CN104475671 A CN 104475671A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
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Abstract
The invention discloses a quartz powder/expanded vermiculite composite casting coating which is characterized by being prepared from the following raw materials, by weight, 45-55 parts of quartz powder, 20-30 parts of expanded vermiculite, 30-40 parts of mineral waste residue, 0.6-1.3 parts of fatty alcohol polyoxyethylene ether, 1-3 parts of polyethylene methyl ether methacrylate, 3-6 parts of nano-sized magnesium hydroxide, 14-18 parts of cottonseed hull, 2-3 parts of magnesium chloride, 1.2-3.1 parts of aluminium dihydrogen phosphate, 2-4 parts of rosin, 50-60 parts of ethanol and 3-6 parts of an auxiliary agent. The casting coating provided by the invention has good chemical stability and suspensibility. Meanwhile, hardness of the casting coating is also effectively enhanced. During production process, occurrence rate of a scour trough is greatly reduced, and defects of sand burning, sand inclusion, blowholes and the like on casting surface are effectively prevented and reduced.
Description
Technical field
The present invention relates to cast paint field, be specifically related to a kind of silica flour/expanded vermiculite composite casting coating and preparation method thereof.
Background technology
Cast paint refers to for being coated in die cavity or core surface, to change the casting auxiliary material of the performances such as its surperficial refractoriness, chemical stability, anti-metal erosion, anti-stick grittiness, the disperse system that it is made up of the material of multiple different in kind, its composition mainly comprises the compositions such as refractory material, suspending agent, carrier, binding agent and special additive.Require that coating has good processing performance, service behaviour, quality stability and applies reappearance when acting on foundry goods, can play heat insulation on the one hand, equalization temperature, exempt the object of the impingment corrosion of molten metal, the defect such as cracking, sand holes, white iron formation that can prevent cast product from causing because Local cooling is too fast on the other hand.Cast paint is of a great variety, substantially can be divided into two classes: water based paint and alcohol-base paint.Wherein alcohol-base paint is both curable through lighting after application, does not need to dry, and can shorten the production cycle, Simplified flowsheet, reduces drying plant investment, is be cast a kind of quick drying paint that boundary widely uses, has been widely used in the production of steel, iron, coloured foundry goods.
But alcohol-base foundry coating has many defects in prior art, such as: suspension stability is poor, in long-distance transport and deposit easy layering in process, resistance to elevated temperatures is poor, hardness is low, low, the anti-stick grittiness of poor chemical stability, anti-metal performance of flushing is weak, make alcohol-base foundry coating function singleness, cannot large-scale industrial production be met.
Summary of the invention
Object of the present invention is just to provide a kind of silica flour/expanded vermiculite composite casting coating and preparation method thereof, to overcome the deficiencies in the prior art.
The object of the present invention is achieved like this:
A kind of silica flour/expanded vermiculite composite casting coating, it is characterized in that, be made up of the raw material of following weight portion: silica flour 45-55, expanded vermiculite 20-30, slag 30-40, AEO 0.6-1.3, polyethylene glycol monomethyl ethermethacrylic acid esters 1-3, nano-sized magnesium hydroxide 3-6, cotton seed hulls 14-18, magnesium chloride 2-3, aluminium dihydrogen phosphate 1.2-3.1, rosin 2-4, ethanol 150-160, auxiliary agent 3-6.
Described auxiliary agent is made up of following raw materials in part by weight: shrimp shell 8-13, pearl mica 75-85, hydrotalcite 55-70, sodium phosphate trimer 0.1-0.4, organobentonite 1-2, thymol 0.2-0.4, dimethicone 2-4, 1-Methoxy-2-propyl acetate 0.3-0.6, nano silicon 0.8-2.1, brown iron oxide 3-6, polyethylene glycol oxide 2.3-3.1, brown sugar 1.2-3.5, suitable quantity of water, its preparation method is: by shrimp shell, pearl mica, hydrotalcite is put into calcining furnace and calcine 2-3 hour at 540-670 DEG C, take out, the hydrochloric acid solution putting into 8-12% soaks 4-5 hour, filter and take out, use clear water cyclic washing, dry and pulverize, be added to the water, simultaneously, add polyethylene glycol oxide, brown iron oxide grinds, spraying dry obtains xeraphium, organobentonite, sodium phosphate trimer are joined 1-Methoxy-2-propyl acetate high speed and stir 10-20 minute, adds dimethicone, nano silicon high-speed stirred 20-30 minute successively, until fineness reaches the organobentonite that less than 50 μm obtain modification, xeraphium, organic modified bentonite, thymol, brown sugar are added suitable quantity of water grinding granulation, dries and get final product.
The preparation method of described a kind of silica flour/expanded vermiculite composite casting coating, is characterized in that comprising the following steps:
(1) put into retort calcination processing 3-4 hour at 435-550 DEG C after being dried by cotton seed hulls, take out, the hydrochloric acid solution putting into 10-12% soaks 3-6 hour, filters and takes out, use clear water cyclic washing, dries and pulverizes, the cotton seed hulls powder of obtained modification;
(2) modification cotton seed hulls powder above-mentioned steps obtained stirs pulping and is heated to 70-80 DEG C together with the ethanol of slag, 1/4 weight, add AEO, polyethylene glycol monomethyl ethermethacrylic acid esters maintenance temperature stirs 1-2 hour, be cooled to 40-50 DEG C and add nano-sized magnesium hydroxide grinding 30-40 minute;
(3) expanded vermiculite pulverizing is stirred with the ethanol of 1/5 weight, leave standstill 10-12 hour, then add magnesium chloride, rosin heating stirs 30-40 minute to 70-80 DEG C of constant temperature;
(4) silica flour is dropped in reactor, add the ethanol agitation grinding 10-15 minute of aluminium dihydrogen phosphate and surplus, add step (2), (3) product, auxiliary agent again, temperature of reaction kettle is slowly risen to 75-85 DEG C simultaneously, keep temperature to stir 20-40 minute, grinding is until fineness reaches less than 50 μm.
The present invention has following beneficial effect:
A kind of silica flour provided by the invention/expanded vermiculite composite casting coating, there is good chemical stability and suspension, also effectively increase its hardness simultaneously, in process of production, greatly reduce the occurrence rate of scour trough, and effectively prevent and reduce scab, the defect such as burning into sand, sand holes.
Detailed description of the invention
Described a kind of silica flour/expanded vermiculite composite casting coating, it is characterized in that, be made up of the raw material of following weight portion: silica flour 47, expanded vermiculite 23, slag 34, AEO 1.3, polyethylene glycol monomethyl ethermethacrylic acid esters 1, nano-sized magnesium hydroxide 3, cotton seed hulls 14, magnesium chloride 2, aluminium dihydrogen phosphate 1.2, rosin 2, ethanol 150, auxiliary agent 3.
Described auxiliary agent is made up of following raw materials in part by weight: shrimp shell 11, pearl mica 78, hydrotalcite 57, sodium phosphate trimer 0.14, organobentonite 1, thymol 0.2, dimethicone 2, 1-Methoxy-2-propyl acetate 0.3, nano silicon 1.1, brown iron oxide 3, polyethylene glycol oxide 2.3, brown sugar 1.5, suitable quantity of water, its preparation method is: by shrimp shell, pearl mica, hydrotalcite is put into calcining furnace and calcine 2-3 hour at 540-670 DEG C, take out, the hydrochloric acid solution putting into 8-12% soaks 4-5 hour, filter and take out, use clear water cyclic washing, dry and pulverize, be added to the water, simultaneously, add polyethylene glycol oxide, brown iron oxide grinds, spraying dry obtains xeraphium, organobentonite, sodium phosphate trimer are joined 1-Methoxy-2-propyl acetate high speed and stir 10-20 minute, adds dimethicone, nano silicon high-speed stirred 20-30 minute successively, until fineness reaches the organobentonite that less than 50 μm obtain modification, xeraphium, organic modified bentonite, thymol, brown sugar are added suitable quantity of water grinding granulation, dries and get final product.
Preparation method comprises the following steps:
(1) put into retort calcination processing 3-4 hour at 435-550 DEG C after being dried by cotton seed hulls, take out, the hydrochloric acid solution putting into 10-12% soaks 3-6 hour, filters and takes out, use clear water cyclic washing, dries and pulverizes, the cotton seed hulls powder of obtained modification;
(2) modification cotton seed hulls powder above-mentioned steps obtained stirs pulping and is heated to 70-80 DEG C together with the ethanol of slag, 1/4 weight, add AEO, polyethylene glycol monomethyl ethermethacrylic acid esters maintenance temperature stirs 1-2 hour, be cooled to 40-50 DEG C and add nano-sized magnesium hydroxide grinding 30-40 minute;
(3) expanded vermiculite pulverizing is stirred with the ethanol of 1/5 weight, leave standstill 10-12 hour, then add magnesium chloride, rosin heating stirs 30-40 minute to 70-80 DEG C of constant temperature;
(4) silica flour is dropped in reactor, add the ethanol agitation grinding 10-15 minute of aluminium dihydrogen phosphate and surplus, add step (2), (3) product, auxiliary agent again, temperature of reaction kettle is slowly risen to 75-85 DEG C simultaneously, keep temperature to stir 20-40 minute, grinding is until fineness reaches less than 50 μm.
The technical indicator of being processed the cast paint obtained by above-described embodiment is as follows:
(1) coating abrasion performance: 0.55;
(2) 24 hours coating suspension rates are placed: 99.1%;
(3) the normal temperature gas permeability of coating: 11.4cm2 (kpamin)-1;
(4) apply, dry, appearance of coat after cooling: flawless, without bubbling and the uniform coating of macroscopic pin hole.
Claims (2)
1. silica flour/expanded vermiculite composite casting coating, it is characterized in that, be made up of the raw material of following weight portion: silica flour 45-55, expanded vermiculite 20-30, slag 30-40, AEO 0.6-1.3, polyethylene glycol monomethyl ethermethacrylic acid esters 1-3, nano-sized magnesium hydroxide 3-6, cotton seed hulls 14-18, magnesium chloride 2-3, aluminium dihydrogen phosphate 1.2-3.1, rosin 2-4, ethanol 150-160, auxiliary agent 3-6, described auxiliary agent is made up of following raw materials in part by weight: shrimp shell 8-13, pearl mica 75-85, hydrotalcite 55-70, sodium phosphate trimer 0.1-0.4, organobentonite 1-2, thymol 0.2-0.4, dimethicone 2-4, 1-Methoxy-2-propyl acetate 0.3-0.6, nano silicon 0.8-2.1, brown iron oxide 3-6, polyethylene glycol oxide 2.3-3.1, brown sugar 1.2-3.5, suitable quantity of water, its preparation method is: by shrimp shell, pearl mica, hydrotalcite is put into calcining furnace and calcine 2-3 hour at 540-670 DEG C, take out, the hydrochloric acid solution putting into 8-12% soaks 4-5 hour, filter and take out, use clear water cyclic washing, dry and pulverize, be added to the water, simultaneously, add polyethylene glycol oxide, brown iron oxide grinds, spraying dry obtains xeraphium, organobentonite, sodium phosphate trimer are joined 1-Methoxy-2-propyl acetate high speed and stir 10-20 minute, adds dimethicone, nano silicon high-speed stirred 20-30 minute successively, until fineness reaches the organobentonite that less than 50 μm obtain modification, xeraphium, organic modified bentonite, thymol, brown sugar are added suitable quantity of water grinding granulation, dries and get final product.
2. the preparation method of a kind of silica flour according to claim 1/expanded vermiculite composite casting coating, is characterized in that comprising the following steps:
(1) put into retort calcination processing 3-4 hour at 435-550 DEG C after being dried by cotton seed hulls, take out, the hydrochloric acid solution putting into 10-12% soaks 3-6 hour, filters and takes out, use clear water cyclic washing, dries and pulverizes, the cotton seed hulls powder of obtained modification;
(2) modification cotton seed hulls powder above-mentioned steps obtained stirs pulping and is heated to 70-80 DEG C together with the ethanol of slag, 1/4 weight, add AEO, polyethylene glycol monomethyl ethermethacrylic acid esters maintenance temperature stirs 1-2 hour, be cooled to 40-50 DEG C and add nano-sized magnesium hydroxide grinding 30-40 minute;
(3) expanded vermiculite pulverizing is stirred with the ethanol of 1/5 weight, leave standstill 10-12 hour, then add magnesium chloride, rosin heating stirs 30-40 minute to 70-80 DEG C of constant temperature;
(4) silica flour is dropped in reactor, add the ethanol agitation grinding 10-15 minute of aluminium dihydrogen phosphate and surplus, add step (2), (3) product, auxiliary agent again, temperature of reaction kettle is slowly risen to 75-85 DEG C simultaneously, keep temperature to stir 20-40 minute, grinding is until fineness reaches less than 50 μm.
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| CN201410523593.XA CN104475671A (en) | 2014-10-08 | 2014-10-08 | Quartz powder/expanded vermiculite composite casting coating and manufacturing method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106345968A (en) * | 2016-10-24 | 2017-01-25 | 黄林 | Coating for casting automobile flywheel shell |
| CN107470552A (en) * | 2017-08-28 | 2017-12-15 | 安徽省含山县潮林铸管厂（普通合伙） | A kind of preparation method of centrifugal casting coating |
| CN108219643A (en) * | 2017-12-29 | 2018-06-29 | 梅庆波 | A kind of preparation method of flame-retardant polyurethane synthetic leather |
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| CN101491823A (en) * | 2009-03-06 | 2009-07-29 | 靖江市黎明铸造材料厂 | Centrifugal casting roller coatings and preparation method thereof |
| CN103100658A (en) * | 2012-12-11 | 2013-05-15 | 芜湖恒坤汽车部件有限公司 | Method for preparing solid-mold casting coating material for cast iron |
| CN104014723A (en) * | 2014-05-09 | 2014-09-03 | 方学军 | Expansible graphite alcohol-group casting coating and preparation method thereof |
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2014
- 2014-10-08 CN CN201410523593.XA patent/CN104475671A/en active Pending
Patent Citations (6)
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| CN1775415A (en) * | 2005-11-24 | 2006-05-24 | 张鑫 | Special coating of hot-mould centrifugal casting mould for flexible joint ferrosteel pipe |
| CN101003074A (en) * | 2006-01-16 | 2007-07-25 | 刘玉满 | Composite powder additive used for both water-based or alcohol-based paint for casting |
| WO2007082646A1 (en) * | 2006-01-17 | 2007-07-26 | Ashland-Südchemie-Kernfest GmbH | Water-based liquid size containing a seeding agent |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106345968A (en) * | 2016-10-24 | 2017-01-25 | 黄林 | Coating for casting automobile flywheel shell |
| CN107470552A (en) * | 2017-08-28 | 2017-12-15 | 安徽省含山县潮林铸管厂（普通合伙） | A kind of preparation method of centrifugal casting coating |
| CN108219643A (en) * | 2017-12-29 | 2018-06-29 | 梅庆波 | A kind of preparation method of flame-retardant polyurethane synthetic leather |
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Application publication date: 20150401 |