CN105935742B - A kind of powdery cast paint and preparation method thereof and application method - Google Patents

A kind of powdery cast paint and preparation method thereof and application method Download PDF

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Publication number
CN105935742B
CN105935742B CN201610379519.4A CN201610379519A CN105935742B CN 105935742 B CN105935742 B CN 105935742B CN 201610379519 A CN201610379519 A CN 201610379519A CN 105935742 B CN105935742 B CN 105935742B
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Prior art keywords
alcohol
powdery
cast paint
powder
water
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CN105935742A (en
Inventor
张友寿
夏露
黄晋
晏骏玮
李四年
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Hubei University of Technology
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Hubei University of Technology
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C3/00Selection of compositions for coating the surfaces of moulds, cores, or patterns

Abstract

The present invention provides a kind of powdery cast paint and preparation method thereof and application method, powdery cast paint of the invention is composed of the following components by weight percentage:Refractory aggregate 89~92%, sodium bentonite 2.6~3.6%, rosin 0.64~1.3%, polyvinyl butyral 0.58~0.75%, hydroxypropyl methyl cellulose 0.15~0.25%, water 4.0~5.1%.The powdery cast paint of the present invention does not contain alcohol, and can interpenetrate to merge when in use with alcohol and obtain qualified coating.

Description

A kind of powdery cast paint and preparation method thereof and application method
Technical field
The present invention relates to sand casting paint fields, in particular to a kind of powdery cast paint and preparation method thereof and use Method.
Background technology
Alcohol-base foundry coating is widely used in foundry enterprise always as a kind of quick drying paint.Coating is by specialized enterprises Production.In order to obtain preferable alcohol-base foundry coating, then need by various alcohol-base paint auxiliary agents realize it is good dissolve each other, and with Refractory aggregate organically combines, and it is good to obtain suspension stability, and brush is felt, and coating is not blistering when use, non-scale, and intensity is high Alcohol-base foundry coating, and alcohol-base paint auxiliary agent can just access preferable dissolving under alcohol function, therefore, most of existing alcohol Base casting coatings need to use a large amount of alcohol in process of production.
However alcohol is volatile materials, not only causes to waste, and increases cost, and alcohol is inflammable and explosive so that produced Journey is dangerous, and also not environmentally, while fire or explosion accident can often occur during production and transport for coating, in user warehouse Can also there be safety problem during storage, therefore there are great security risks.In order to reduce risk, also there are coatings enterprises will Paste is made in coating, although reducing the dosage of alcohol to a certain extent, product still contains many alcoholic contents, and The production safety of coatings enterprises is not solved the problems, such as, in transit, in case of when weather temperature is high or when packages in damaged condition, by squeezing When pressure, alcohol is oozed out from coating plaster, is finally leaked from the package, and fire incident is easily caused.
If powder-type coating preparation does not have spirituous participation, coating needs to dissolve each other with alcohol when in use, however, auxiliary agent at this time It is poor with the dissolubility of alcohol, it cannot reach and be completely dissolved, and be susceptible between alcohol and aggregate and auxiliary agent and be separated from each other, float Float on alcohol surface, it is difficult to obtain qualified coating.
Invention content
The object of the present invention is to provide a kind of powdery cast paints, to solve the above-mentioned problems in the prior art, this The powdery cast paint of invention does not contain alcohol, and can interpenetrate to merge when in use with alcohol and obtain qualified casting painting Material.
Second object of the present invention is to provide a kind of preparation method of powdery cast paint.
Third object of the present invention is to provide a kind of application methods of powdery cast paint.
To achieve the above object, powdery cast paint of the invention, it is composed of the following components by weight percentage:
In said components, the refractory aggregate main component is zirconium English powder, silica flour, mullite powder, schmigel, bauxite One or more of with arbitrary proportion mixture.
In said components, the granularity of the refractory aggregate is 325 mesh.
In said components, the viscosity of the hydroxypropyl methyl cellulose is 5~15mpa.s.
In said components, the polyvinyl butyral granularity is 600~800 mesh, and viscosity is 3~20mpa.s.
In said components, the granularity of the rosin is 400~600 mesh, and the rosin is maleic rosin.
In said components, the Na-bentonite soil granularity is 600~800 mesh.
The preparation method of the powdery cast paint of the present invention, includes the following steps:
(1) prepare refractory aggregate:Weigh zirconium English powder, silica flour, mullite powder, schmigel, bauxite one or more are mixed It closes spare;
(2) sodium bentonite, rosin, polyvinyl butyral, hydroxypropyl methyl cellulose are weighed respectively;
(3) powder in step (1) and (2) is mixed and mixing in kolleroang is added;
(4) under the non-stop-machine state of kolleroang, water is sprayed into mist in kolleroang, continues mixed grind to powder after having sprayed water Shape.
In above-mentioned steps (4), the water sprayed into kolleroang stops adding when the mixture in step (3) being made to be in wetting state Water.
The application method of powdery cast paint prepared by the above method is:Before applying brush cast, the powdery is taken to cast 10 parts of coating, 1~2 part of industrial alcohol, strong stirring mixes and is made paste in blender, then is diluted to liquid state with alcohol Coating is for use.
Beneficial effects of the present invention:
(1) powdery cast paint of the invention be by roll make between refractory aggregate and auxiliary agent and different auxiliary agents it Between realize that adequately infiltration fusion, the hydroxypropyl methyl cellulose contained in powdery cast paint have very strong point in water Various auxiliary agents effectively can be attached to refractory aggregate particle surface in the presence of a small amount of water, added by scattered, swelling and wetting ability The water entered makes mixture be advisable in hygrometric state graininess, and to keep the preferable performance of coating, coating prepared by this method, which still has, to be passed It unites every acceptable performance of alcohol-base paint, that is, there is good suspension stability, brush to feel, not blistering, non-scale when use, by force Degree is high.
(2) powdery cast paint of the invention does not use alcohol, production process safety and environmental protection, and fire is avoided that in transportational process The accidents such as calamity or explosion, it is safe and reliable during warehouse storage, meanwhile, production cost substantially reduces, and production environment is improved.
(3) hydroxypropyl methyl cellulose has very strong dispersion, swelling and wetting ability in water, in the participation of a small amount of water Under can various auxiliary agents be effectively attached to refractory aggregate particle surface, intensity after enhancing hardening;Sodium bentonite water absorption rate and Expansion multiple is big, and swellability is good in water, plays suspending agent, and its good dispersion in water, has higher plasticity With stronger caking property;The brush sense that polyvinyl butyral can make coating have stronger anti-settling ability and coating is made to have had, The compound of itself and hydroxyl, which is used in combination, makes coating have excellent adhesiveness, and the polyvinyl butyral of low viscosity is in alcohol In solution rate it is very fast, make coating and alcohol that there is quick dissolubility, need in use, can quickly be dissolved with alcohol and When be prepared into alcohol-base foundry coating.
Specific implementation mode
The present invention is further explained in the light of specific embodiments.
Embodiment 1
The powdery cast paint of the present embodiment is by weight percentage following at being grouped as:Refractory aggregate 91%, sodium base Bentonite 2.7%, rosin 0.9%, polyvinyl butyral 0.72%, hydroxypropyl methyl cellulose 0.18%, water 4.5%.Its In, the granularity of refractory material is selected as 325 mesh;The viscosity of hydroxypropyl methyl cellulose is selected as 10mpa.s;Polyvinyl butyral grain Degree is selected as 800 mesh, viscosity 20mpa.s;Rosin is selected as maleic rosin, and granularity is 400 mesh;Na-bentonite soil granularity is selected as 600 Mesh.
Preparation process:
(1) prepare 91 kilograms of refractory aggregates:30 kilograms of zirconium English powder, 21 kilograms of schmigel, 40 kilograms of bauxite are weighed, and is mixed It closes spare;
(2) 2.7 kilograms of sodium bentonite, 0.9 kilogram of rosin, 0.72 kilogram of polyvinyl butyral, hydroxypropyl are weighed respectively 0.18 kilogram of ylmethyl cellulose;
(3) powder in step (1) and (2) is added in muller formula kolleroang, booting mixing 20 minutes;
(4) 4.5 kilograms of water is weighed, is added water in spray cans, under the non-stop-machine state of kolleroang, water is sprayed into mist In kolleroang, sprayed water, continued mixed grind 1 hour, muller constantly roll and constantly the stirring of scraper plate under, refractory powder and auxiliary agent Mutual synthesis and ubiquit, last mixture are still in macroscopically powdery, discharging packaging.
Use process:
Above-mentioned powder-type coating is applied to before applying brush cast, and alcohol is added and is stirred, liquid coating is made.Take powder-material 10 Kilogram, 1~2 kilogram of industrial alcohol, by powder be added industrial alcohol in, mixing stir evenly 15~30 minutes, paste material, then add Suitable alcohols dilute dilute coating that use state is made, you can with brushing, spraying or other methods by coating application in casting table Face, after brushing every time, drying of lighting a fire is multiple if necessary to brush, and can according to circumstances increase number.After reaching coating needs, i.e., It can be used for pouring metal melt.
The present embodiment coating property and coating quality are as follows:
Table 1
2 hours suspensibility % Brush sense Anti-foaming Strength of coating
98 It is smooth Repeated multiple times brush is not blistering Hand can not wipe powder
By table as it can be seen that the powdery cast paint of the present embodiment still has traditional alcohol-base paint when being used in mixed way with alcohol That is, there is every acceptable performance good suspension stability, brush to feel, and not blistering, non-scale when use, caking property effect is very By force, intensity is higher;
Embodiment 2
The powdery cast paint of the present embodiment is by weight percentage following at being grouped as:Refractory aggregate 90%, sodium base Bentonite 3.6%, rosin 1.3%, polyvinyl butyral 0.75%, hydroxypropyl methyl cellulose 0.15%, water 4.2%.Its In, the granularity of refractory material is selected as 325 mesh;The viscosity of hydroxypropyl methyl cellulose is selected as 15mpa.s;Polyvinyl butyral grain Degree is selected as 700 mesh, viscosity 5mpa.s;Rosin is selected as maleic rosin, and granularity is 500 mesh;Na-bentonite soil granularity is selected as 700 Mesh.
Preparation process:
(1) prepare 90 kilograms of refractory aggregates:Weigh 30 kilograms of zirconium English powder, 20 kilograms of mullite powder, 20 kilograms of schmigel, aluminium 20 kilograms of alumina, and mixing for standby use;
(2) 3.6 kilograms of sodium bentonite, 1.3 kilograms of rosin, 0.75 kilogram of polyvinyl butyral, hydroxypropyl are weighed respectively 0.15 kilogram of ylmethyl cellulose;
(3) powder in step (1) and (2) is mixed and is added in muller formula kolleroang;Mixing is added in kolleroang, booting Mixing 20 minutes;
(4) 4.2 kilograms of water is weighed, is added water in spray cans, under the non-stop-machine state of kolleroang, water is sprayed into mist In kolleroang, sprayed water, continued mixed grind 1 hour, muller constantly roll and constantly the stirring of scraper plate under, refractory powder and auxiliary agent Mutual synthesis and ubiquit, last mixture are still in macroscopically powdery, discharging packaging.
Use process:
Above-mentioned powder-type coating is applied to before applying brush cast, and alcohol is added and is stirred, liquid coating is made.Take powder-material 10 Kilogram, 1~2 kilogram of industrial alcohol, by powder be added industrial alcohol in, mixing stir evenly 15~30 minutes, paste material, then add Suitable alcohols dilute dilute coating that use state is made, you can with brushing, spraying or other methods by coating application in casting table Face, after brushing every time, drying of lighting a fire is multiple if necessary to brush, and can according to circumstances increase number.After reaching coating needs, i.e., It can be used for pouring metal melt.
The present embodiment coating property and coating quality are as follows:
Table 2
2 hours suspensibility % Brush sense Anti-foaming Strength of coating
99 It is smooth Repeated multiple times brush is not blistering Hand can not wipe powder
By table as it can be seen that the powdery cast paint of the present embodiment still has traditional alcohol-base paint when being used in mixed way with alcohol That is, there is every acceptable performance good suspension stability, brush to feel, not blistering, non-scale when use, caking property effect compared with By force, intensity is high.
Embodiment 3
The powdery cast paint of the present embodiment is by weight percentage following at being grouped as:Refractory aggregate 89%, sodium base Bentonite 3.6%, rosin 1.3%, polyvinyl butyral 0.75%, hydroxypropyl methyl cellulose 0.25%, water 5.1%.Its In, the granularity of refractory material is selected as 325 mesh;The viscosity of hydroxypropyl methyl cellulose is selected as 5mpa.s;Polyvinyl butyral grain Degree is selected as 600 mesh, viscosity 3mpa.s;Rosin is selected as maleic rosin, and granularity is 500 mesh;Na-bentonite soil granularity is selected as 800 Mesh.
Preparation process:
(1) prepare 89 kilograms of refractory aggregates:It is spare to weigh 89 kilograms of bauxite;
(2) 3.6 kilograms of sodium bentonite, 1.3 kilograms of rosin, 0.75 kilogram of polyvinyl butyral, hydroxypropyl are weighed respectively 0.25 kilogram of ylmethyl cellulose;
(3) powder in step (1) and (2) is mixed and is added in kolleroang, booting mixing 20 minutes;
(4) 5.1 kilograms of water is weighed, is added water in spray cans, under the non-stop-machine state of kolleroang, water is sprayed into mist In kolleroang, sprayed water, continued mixed grind 1 hour, muller constantly roll and constantly the stirring of scraper plate under, refractory powder and auxiliary agent Mutual synthesis and ubiquit, last mixture are still in macroscopically powdery, discharging packaging.
Use process:
Above-mentioned powder-type coating is applied to before applying brush cast, and alcohol is added and is stirred, liquid coating is made.Take powder-material 10 Kilogram, 1~2 kilogram of industrial alcohol, by powder be added industrial alcohol in, mixing stir evenly 15~30 minutes, paste material, then add Suitable alcohols dilute dilute coating that use state is made, you can with brushing, spraying or other methods by coating application in casting table Face, after brushing every time, drying of lighting a fire is multiple if necessary to brush, and can according to circumstances increase number.After reaching coating needs, i.e., It can be used for pouring metal melt.
The present embodiment coating property and coating quality are as follows:
Table 3
2 hours suspensibility % Brush sense Anti-foaming Strength of coating
97 It is smooth Repeated multiple times brush is not blistering Hand can not wipe powder
By table as it can be seen that the powdery cast paint of the present embodiment still has traditional alcohol-base paint when being used in mixed way with alcohol That is, there is every acceptable performance good suspension stability, brush to feel, not blistering, non-scale when use, and caking property effect is good Good, intensity is higher.
Embodiment 4
The powdery cast paint of the present embodiment is by weight percentage following at being grouped as:Refractory aggregate 92%, sodium base Bentonite 2.6%, rosin 0.64%, polyvinyl butyral 0.58%, hydroxypropyl methyl cellulose 0.18%, water 4.0%.Its In, the granularity of refractory material is selected as 325 mesh;The viscosity of hydroxypropyl methyl cellulose is selected as 10mpa.s;Polyvinyl butyral grain Degree is selected as 600 mesh, viscosity 10mpa.s;Rosin is selected as maleic rosin, and granularity is 600 mesh;Na-bentonite soil granularity is selected as 600 Mesh.
Preparation process:
(1) prepare 92 kilograms of refractory aggregates:Weigh 20 kilograms of zirconium English powder, 25 kilograms of silica flour, 15 kilograms of mullite powder, just 12 kilograms of beautiful powder, 20 kilograms of bauxite, and mixing for standby use;
(2) 2.6 kilograms of sodium bentonite, 0.64 kilogram of rosin, 0.58 kilogram of polyvinyl butyral, hydroxypropyl are weighed respectively 0.18 kilogram of ylmethyl cellulose;
(3) powder in step (1) and (2) is mixed and is added in kolleroang, booting mixing 20 minutes;
(4) 4.0 kilograms of water is weighed, is added water in spray cans, under the non-stop-machine state of kolleroang, water is sprayed into mist In kolleroang, sprayed water, continued mixed grind 1 hour, muller constantly roll and constantly the stirring of scraper plate under, refractory powder and auxiliary agent Mutual synthesis and ubiquit, last mixture are still in macroscopically powdery, discharging packaging.
Use process:
Above-mentioned powder-type coating is applied to before applying brush cast, and alcohol is added and is stirred, liquid coating is made.Take powder-material 10 Kilogram, 1~2 kilogram of industrial alcohol, by powder be added industrial alcohol in, mixing stir evenly 15~30 minutes, paste material, then add Suitable alcohols dilute dilute coating that use state is made, you can with brushing, spraying or other methods by coating application in casting table Face, after brushing every time, drying of lighting a fire is multiple if necessary to brush, and can according to circumstances increase number.After reaching coating needs, i.e., It can be used for pouring metal melt.
The present embodiment coating property and coating quality are as follows:
Table 4
2 hours suspensibility % Brush sense Anti-foaming Strength of coating
99 It is smooth Repeated multiple times brush is not blistering Hand can not wipe powder
By table as it can be seen that the powdery cast paint of the present embodiment still has traditional alcohol-base paint when being used in mixed way with alcohol That is, there is every acceptable performance good suspension stability, brush to feel, and not blistering, non-scale when use, caking property effect is very By force, intensity is very high.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe The personnel of this technology are known can all to carry out modifications and changes to above-described embodiment without prejudice under spirit and scope of the invention.Cause This, the technical field those having ordinary skill in the art is completed without departing from the spirit and technical ideas disclosed in the present invention such as All equivalent modifications or change should be covered by the claim of the present invention.

Claims (8)

1. a kind of powdery alcohol-based cast paint, it is characterised in that:The powdery cast paint is by following components group by weight percentage At:
The refractory aggregate main component is zirconium English powder, silica flour, mullite powder, schmigel, one or more of bauxite With arbitrary proportion mixture;
The viscosity of the hydroxypropyl methyl cellulose is 5~15mpa.s.
2. powdery alcohol-based cast paint according to claim 1, it is characterised in that:The granularity of the refractory aggregate is 325 Mesh.
3. powdery alcohol-based cast paint according to claim 1, it is characterised in that:The polyvinyl butyral granularity is 600~800 mesh, viscosity are 3~20mpa.s.
4. powdery alcohol-based cast paint according to claim 1, it is characterised in that:The granularity of the rosin is 400~600 Mesh, the rosin are maleic rosin.
5. powdery alcohol-based cast paint according to claim 1, it is characterised in that:The Na-bentonite soil granularity is 600 ~800 mesh.
6. a kind of preparation method of powdery alcohol-based cast paint as described in claim 1, it is characterised in that this method includes such as Lower step:
(1) prepare refractory aggregate:Zirconium English powder is weighed, silica flour, mullite powder, schmigel, bauxite one or more mix standby Material is used;
(2) sodium bentonite, rosin, polyvinyl butyral, hydroxypropyl methyl cellulose are weighed respectively;
(3) powder in step (1) and (2) is mixed and mixed grind in kolleroang is added;
(4) under the non-stop-machine state of kolleroang, water is sprayed into mist in kolleroang, continues mixed grind to powdery after having sprayed water.
7. the preparation method of powdery alcohol-based cast paint according to claim 6, it is characterised in that:In the step (4), The water sprayed into kolleroang stops when the mixed grind material in step (3) being made to be in wetting state plus water.
8. a kind of application method of powdery alcohol-based cast paint prepared by method as claimed in claim 7, it is characterised in that:Using Before applying brush cast, 10 parts of the powdery alcohol-based cast paint, 1-2 parts of industrial alcohol is taken to be mixed and stirred for that paste is made, then use wine It is for use that essence is diluted to liquid state coating.
CN201610379519.4A 2016-05-31 2016-05-31 A kind of powdery cast paint and preparation method thereof and application method Active CN105935742B (en)

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CN106270373B (en) * 2016-09-27 2018-06-29 湖北工业大学 A kind of precoated sand sand mold alcohol-base foundry coating and preparation method thereof
CN106914583B (en) * 2017-02-28 2019-01-04 湖北工业大学 A kind of dry cream shape cast paint and preparation method thereof and application method
CN106670377B (en) * 2017-02-28 2019-02-26 湖北工业大学 A kind of diluted cast paint of water-powered roller preparing alcohol and preparation method thereof
CN106670378B (en) * 2017-02-28 2019-02-26 湖北工业大学 One kind uphanging water base cast paint of buoyancy and preparation method thereof
CN106694798B (en) * 2017-02-28 2019-01-04 湖北工业大学 A kind of powdery lost foam casting coating and its application method and application
CN107866520B (en) * 2017-11-15 2020-04-07 共享智能装备有限公司 Anhydrous water-soluble powder casting coating and preparation method thereof

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CN1022173C (en) * 1990-11-14 1993-09-22 高化民 Process for preparation of dry powder of alcoholic paint
CN1666828A (en) * 2005-01-18 2005-09-14 湖北工业大学 Anti-seepage burnon casting paint made from alcohol base or aqueous sand powder
CN101319104B (en) * 2008-06-20 2010-09-08 中国矿业大学(北京) Composite suspension agent of alcohol based dry powder paint, preparation method and prepared paint thereof
CN101428328B (en) * 2008-12-06 2010-06-30 华中科技大学 Powdery paint for lost foam casting of cast iron
JP2010131665A (en) * 2008-12-08 2010-06-17 Okazaki Kosanbutsu Kk Facing material for casting
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