CN104117628B - A kind of graphite powder cast paint and preparation method thereof - Google Patents

A kind of graphite powder cast paint and preparation method thereof Download PDF

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Publication number
CN104117628B
CN104117628B CN201410366965.2A CN201410366965A CN104117628B CN 104117628 B CN104117628 B CN 104117628B CN 201410366965 A CN201410366965 A CN 201410366965A CN 104117628 B CN104117628 B CN 104117628B
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China
Prior art keywords
graphite powder
parts
cast paint
stearmide
diatomite
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CN201410366965.2A
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Chinese (zh)
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CN104117628A (en
Inventor
浦巧生
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吴江市液铸液压件铸造有限公司
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Publication of CN104117628A publication Critical patent/CN104117628A/en
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Abstract

The invention discloses a kind of graphite powder cast paint.Coating is made up of following raw material: graphite powder, diatomite, lauryl sodium sulfate, titanium dioxide, binding agent, acrylic resin, stearmide and ethanol.The preparation method of described a kind of graphite powder cast paint, graphite powder and titanium dioxide, diatomite and lauryl sodium sulfate are placed in ball mill ball milling, the material obtained after pulverizing is placed in mixer with binding agent, acrylic resin and stirs together with stearmide, finally slowly add ethanol, after fully stirring, obtain graphite powder cast paint.Graphite powder cast paint good heat-insulation effect of the present invention, each composition synergy, improve the adhesive force of coating, thus prevent the scab phenomenon of foundry goods, prove, when the weight ratio of stearmide and ethanol is 1:2 through test, the suspendability of coating is best, coating raw material abundance of the present invention, nontoxic environmental protection, is particularly useful for the casting of carbon steel.

Description

A kind of graphite powder cast paint and preparation method thereof
Technical field
The present invention relates to a kind of graphite powder cast paint and preparation method thereof, belong to foundary industry technical field.
Background technology
The coating of sand casting, mainly for shielding the interphase interaction of sand mold and metal liquid, density fireproof coating is formed under cast temperature, placing metal liquid penetrates in sand mold, simultaneously because the material of sand mold at high temperature decomposes generation gas, coating can prevent from entering molten metal body weight, affects the surface smoothness of foundry goods.Conventional is cold coating at present, because be suspension liquid, and suspension is low, does not stop to stir and could brush evenly, otherwise can not form fine and close coating during use.
Application number is that 201310447720.8 " a kind of graphite cast paints " disclose a kind of graphite cast paint, coating includes following material by weight: propenyl 20-25 part, methyl alcohol 20-24 part, methacrylate 4-5 part, soil dress graphite 20-22 part, crystalline flake graphite 2-5 part, silica flour 20-25 part, lithium bentonite 1-2 part, polyvinyl butyral resin 0.5-1 part, AEO 0.05-0.08 part, resin 1-2 part.This coatings chemistry good stability and reduce the occurrence rate of scour trough in production process, but anti-stick grittiness is bad, can cause foundry goods scab.
Summary of the invention
The object of the present invention is to provide a kind of resistance to hot precoated sand and preparation method thereof.
The present invention is achieved through the following technical solutions:
A kind of graphite powder cast paint, be made up of the raw material of following parts by weight: graphite powder 40-50 part, diatomite 10-15 part, lauryl sodium sulfate 6-9 part, titanium dioxide 2-5 part, binding agent 2-6 part, acrylic resin 5-10 part, stearmide 10-15 part and ethanol 20-30 part, wherein graphite powder and titanium dioxide cross 200 mesh sieves, and the weight ratio of described stearmide and ethanol is 1:2.
Described a kind of graphite powder cast paint, in described diatomite, the content of silica is greater than 90%, and the content of iron oxide is 1-1.5%.
Described a kind of graphite powder cast paint, described binding agent is one or more in epoxy resin, phenolic resins, vegetable oil or polyimides.
Described a kind of graphite powder cast paint, is made up of the raw material of following parts by weight: graphite powder 46 parts, 13 parts, diatomite, lauryl sodium sulfate 8 parts, titanium dioxide 3 parts, polyimides 5 parts, acrylic resin 8 parts, stearmide 12 parts and ethanol 24 parts.
The preparation method of described a kind of graphite powder cast paint, the graphite powder and titanium dioxide, diatomite and lauryl sodium sulfate of crossing 200 mesh sieves are proportionally placed in ball mill dry ball milling 2-3h, wherein, material ball ratio is 1:3-5, the material obtained after pulverizing is placed in mixer with binding agent, acrylic resin and is fully uniformly mixed together with stearmide, finally slowly add ethanol, after fully stirring, obtain graphite powder cast paint.Wherein, the speed of mixer is 90-120 rev/min.
The beneficial effect that the present invention reaches:
Graphite powder cast paint of the present invention take graphite powder as primary raw material, good heat-insulation effect, with the addition of diatomite, lauryl sodium sulfate, titanium dioxide, binding agent, acrylic resin and stearmide, each composition synergy, improve the adhesive force of coating, thus prevent the scab phenomenon of foundry goods, prove, when the weight ratio of stearmide and ethanol is 1:2 through test, the suspendability of coating is best, coating raw material abundance of the present invention, nontoxic environmental protection, is particularly useful for the casting of carbon steel.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described.Following examples only for technical scheme of the present invention is clearly described, and can not limit the scope of the invention with this.
Embodiment 1
In the present embodiment, a kind of graphite powder cast paint, be made up of the raw material of following parts by weight: graphite powder 46 parts, 13 parts, diatomite, lauryl sodium sulfate 8 parts, titanium dioxide 3 parts, polyimides 5 parts, acrylic resin 8 parts, stearmide 12 parts and ethanol 24 parts, wherein, graphite powder and titanium dioxide cross 200 mesh sieves; In described diatomite, the content of silica is greater than 90%, and the content of iron oxide is 1-1.5%.
The preparation method of described a kind of graphite powder cast paint, the graphite powder and titanium dioxide, diatomite and lauryl sodium sulfate of crossing 200 mesh sieves are proportionally placed in ball mill dry ball milling 3h, wherein, material ball ratio is 1:3, the material obtained after pulverizing is placed in mixer with polyimides, acrylic resin and is fully uniformly mixed together with stearmide, finally slowly add ethanol, after fully stirring, obtain graphite powder cast paint.Wherein, the speed of mixer is 120 revs/min.
Embodiment 2
In the present embodiment, a kind of graphite powder cast paint, be made up of the raw material of following parts by weight: graphite powder 40 parts, 15 parts, diatomite, lauryl sodium sulfate 6 parts, titanium dioxide 5 parts, epoxy resin and 2 parts, phenolic resins, acrylic resin 10 parts, stearmide 10 parts and ethanol 20 parts, wherein, the weight ratio of epoxy resin and phenolic resins is 1:1, graphite powder and titanium dioxide cross 200 mesh sieves, and in described diatomite, the content of silica is greater than 90%, and the content of iron oxide is 1-1.5%.
The preparation method of described a kind of graphite powder cast paint, the graphite powder and titanium dioxide, diatomite and lauryl sodium sulfate of crossing 200 mesh sieves are proportionally placed in ball mill dry ball milling 2h, wherein, material ball ratio is 1:5, the material obtained after pulverizing is placed in mixer with epoxy resin, phenolic resins, acrylic resin and is fully uniformly mixed together with stearmide, finally slowly add ethanol, after fully stirring, obtain graphite powder cast paint.Wherein, the speed of mixer is 90 revs/min.
Embodiment 3
In the present embodiment, a kind of graphite powder cast paint, be made up of the raw material of following parts by weight: graphite powder 50 parts, 10 parts, diatomite, lauryl sodium sulfate 9 parts, titanium dioxide 2 parts, vegetable oil 6 parts, acrylic resin 5 parts, stearmide 15 parts and ethanol 30 parts, wherein graphite powder and titanium dioxide cross 200 mesh sieves, in described diatomite, the content of silica is greater than 90%, and the content of iron oxide is 1-1.5%.
The preparation method of described a kind of graphite powder cast paint, the graphite powder and titanium dioxide, diatomite and lauryl sodium sulfate of crossing 200 mesh sieves are proportionally placed in ball mill dry ball milling 3h, wherein, material ball ratio is 1:4, the material obtained after pulverizing is placed in mixer with vegetable oil, acrylic resin and is fully uniformly mixed together with stearmide, finally slowly add ethanol, after fully stirring, obtain graphite powder cast paint.Wherein, the speed of mixer is 100 revs/min.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and distortion, these improve and distortion also should be considered as protection scope of the present invention.

Claims (4)

1. a graphite powder cast paint, it is characterized in that, be made up of the raw material of following parts by weight: graphite powder 40-50 part, diatomite 10-15 part, lauryl sodium sulfate 6-9 part, titanium dioxide 2-5 part, binding agent 2-6 part, acrylic resin 5-10 part, stearmide 10-15 part and ethanol 20-30 part, wherein graphite powder and titanium dioxide cross 200 mesh sieves, and the weight ratio of described stearmide and ethanol is 1:2; In described diatomite, the content of silica is greater than 90%, and the content of iron oxide is 1-1.5%; Described binding agent is one or more in epoxy resin, phenolic resins, vegetable oil or polyimides.
2. a kind of graphite powder cast paint according to claim 1, it is characterized in that, be made up of the raw material of following parts by weight: graphite powder 46 parts, 13 parts, diatomite, lauryl sodium sulfate 8 parts, titanium dioxide 3 parts, polyimides 5 parts, acrylic resin 8 parts, stearmide 12 parts and ethanol 24 parts.
3. the preparation method of a kind of graphite powder cast paint according to claim 1, it is characterized in that, the graphite powder and titanium dioxide, diatomite and lauryl sodium sulfate of crossing 200 mesh sieves are proportionally placed in ball mill dry ball milling 2-3h, wherein, material ball ratio is 1:3-5, the material obtained after pulverizing is placed in mixer with binding agent, acrylic resin and is fully uniformly mixed together with stearmide, finally slowly adds ethanol, obtains graphite powder cast paint after fully stirring.
4. the preparation method of a kind of graphite powder cast paint according to claim 3, is characterized in that, the speed of mixer is 90-120 rev/min.
CN201410366965.2A 2014-07-30 2014-07-30 A kind of graphite powder cast paint and preparation method thereof CN104117628B (en)

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CN104117628B true CN104117628B (en) 2016-04-27

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CN104801662A (en) * 2015-05-12 2015-07-29 芜湖市容川机电科技有限公司 Graphite-powder casting coating
CN104959530A (en) * 2015-06-18 2015-10-07 和县科嘉阀门铸造有限公司 Nano titanium dioxide improved pasty demolding agent for valve casting
CN107433322A (en) * 2017-05-24 2017-12-05 禹州市伟朔机械制造厂 A kind of cast paint
CN107414018A (en) * 2017-08-25 2017-12-01 南通德诺尔石墨设备有限公司 A kind of expansible graphite alcohol-base foundry coating
CN107486538A (en) * 2017-08-25 2017-12-19 南通德诺尔石墨设备有限公司 A kind of expansible graphite alcohol-base foundry coating
CN107695287A (en) * 2017-08-25 2018-02-16 南通德诺尔石墨设备有限公司 A kind of expansible graphite alcohol-base foundry coating
CN107486539A (en) * 2017-08-25 2017-12-19 南通德诺尔石墨设备有限公司 A kind of expansible graphite alcohol-base foundry coating
CN107695288A (en) * 2017-08-25 2018-02-16 南通德诺尔石墨设备有限公司 A kind of graphite cast paint
CN107433323A (en) * 2017-08-25 2017-12-05 南通德诺尔石墨设备有限公司 A kind of graphite cast paint
CN107584070A (en) * 2017-08-25 2018-01-16 南通德诺尔石墨设备有限公司 A kind of graphite cast paint
CN107470550A (en) * 2017-08-25 2017-12-15 南通德诺尔石墨设备有限公司 A kind of graphite cast paint
CN108160928A (en) * 2018-01-02 2018-06-15 湖南精量重工科技有限公司 A kind of resin sand core manufacturing craft

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JPS6150700B2 (en) * 1983-06-13 1986-11-05 Honda Motor Co Ltd
CN101195146A (en) * 2007-12-19 2008-06-11 济南圣泉集团股份有限公司 Coal ash casting paint
CN101941048B (en) * 2010-09-03 2012-07-04 吴江市液铸液压件铸造有限公司 Graphite paste coating
CN102836952A (en) * 2012-08-31 2012-12-26 太仓科博尔精密铸业有限公司 Resin sand type casting coating and preparation method thereof
CN103521697B (en) * 2013-09-27 2016-01-20 无锡阳工机械制造有限公司 A kind of graphite cast paint

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