CN104923719A - Production method of environment-friendly dual-purpose coating suspending agent - Google Patents
Production method of environment-friendly dual-purpose coating suspending agent Download PDFInfo
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- CN104923719A CN104923719A CN201510247440.1A CN201510247440A CN104923719A CN 104923719 A CN104923719 A CN 104923719A CN 201510247440 A CN201510247440 A CN 201510247440A CN 104923719 A CN104923719 A CN 104923719A
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Abstract
The invention relates to a production method of an environment-friendly dual-purpose coating suspending agent. The method comprises the following steps that 1, bentonite, sodium carbonate and water are stirred evenly, then roller-crushing and stacking are performed, the water content of a rolled-crushed piece is controlled to be 30-35% by weight, and modified bontonite is obtained; 2, the modified bontonite, attapulgite, lithium carbonate and water are mixed evenly, roller-crushing and stacking are performed, and the water content of the rolled-crushed piece is controlled to be 40-50% by weight; and 3, the product obtained in the second step is naturally aired or dried, crushed and ground into powder, and the environment-friendly dual-purpose coating suspending agent is obtained. The sodium bentonite is obtained by modifying the bentonite through the sodium carbonate firstly, then the sodium bentonite and the attapulgite are modified through the lithium carbonate, and the environment-friendly dual-purpose coating suspending agent containing no organic additive is obtained and can be directly used for water-based and alcohol-based coatings. Meanwhile, the production method is simple and suitable for large-scale industrial application.
Description
Technical field
The present invention relates to coating deflocculant field, particularly a kind of production method of environmental protection dual-purpose type coating deflocculant.
Background technology
Coating solves scab, improves surface quality of continuous castings effective measures the most.Alcohol radical quick drying paint has the shortening engineering time, improves the advantage of castings production efficiency, occupies the dominant contribution of Coating Market for a long time.
Suspension stabilizer is the material making coating have suspension stability and suitable rheological property, and the interpolation of suspension stabilizer should make the overall performance of coating be largely increased.
Alcohol-base foundry coating suspending agent experienced by by sodium bentonite to bentonite development course, and sodium bentonite swellability in alcoholic solvent is bad, and suspension effect is poor, and organobentonite price is higher and poisonous dimethylbenzene must be adopted to cause could use.
CN85105821A discloses a kind of manufacture method of lithium bentonite suspending agent in (publication date on April 29th, 1987), propose, by cation exchange reaction, calcium bentonite is become lithium bentonite, then use bridging agent bridging, and make alcogel with denatured alcohol.The lithium bentonite suspending agent adopting the method to prepare is used in alcohol radical quick drying paint, there is good suspension, screening characteristics and working condition, but this suspending agent needs to use bridging agent bridging, and makes alcogel with denatured alcohol, and the easy dehydration in alcoholic solution of lithium soil micelle makes coating harden.
CN1038817C (publication date on June 24th, 1998) discloses a kind of composite dispersed suspending agent for cast paint, this composite suspension agent is used for the coating with water or organic solvent, is made up of respectively 75-85% rectorite, 3-5% tertiary sodium phosphate, 4-10% sodium carboxymethylcellulose or 65-78% rectorite, 10-18% tertiary sodium phosphate, 2-5% sodium phosphate trimer, 2-8% polyvinyl butyral, 2-5% polyethylene glycol, 1-4% calcium stearate.The suspension of the coating adopting this dispersed suspending agent to produce is good, and refractoriness is high, and brushability is excellent, and long-time placement not easily precipitates and hardens.
CN1923402A discloses a kind of production method of alcohol-based concave-convex stick suspending agent in (publication date on March 7th, 2007), and this suspending agent comprises following component (by weight percentage): Concave-convex clay rod 65-85%, bentonite 5-25%, magnesia 1-5%, sodium metasilicate 1-8%, polyethylene glycol 0.05-5%.Not needing when making alcohol-base foundry coating to cause with water, having that suspensibility is high, brushing performance is good, not precipitating, not luming, good fluidity and the strong feature of anti-stick grittiness.
CN101279355A (publication date on October 08th, 2008) discloses a kind of duality foundry coating suspending agent, with SN suspending agent 3-5 part, attapulgite 1-3 part for primary raw material, add the dispersion of 0.2-0.8 part quaternary cationics after mixing and soak.This coating deflocculant strong adaptability, can directly use, insensitive to the pH value of coating, and water based paint, alcohol-base paint all can reach satisfactory suspension effect.
CN101444824A (publication date on June 3rd, 2009) discloses a kind of bentonite coating deflocculant, and in suspending agent, each composition weight content is: bentonite 38 ~ 58%, artificial mica 15 ~ 26%, Boratex 18 ~ 22%, phosphatase 11 4 ~ 25%, Ludox 2 ~ 5%, sodium carboxymethylcellulose 1 ~ 5%.This bentonite coating deflocculant refractoriness is high, and crack resistance and suspension are better, effectively can improve the surface quality of cast product, improve foundry goods fineness.
CN102371334A (publication date 2012 03 year 14 days) discloses a kind of preparation method of casting alcohol-based coating suspending agent, by attapulgite 20-30 part, calcium-base bentonite 30-40 part, sodium carbonate 10-15 part, polyethylene glycol 1-2 part, sodium metasilicate 5-8 part, zinc oxide 1-2 part, zirconia 1-2 part, mixes by proportioning weigh batching, add the phosphate aqueous solution of 50-60%, temperature reaction obtains Suspension Agent of Alcohol Based Coatings.This suspending agent demonstrates good dispersibility and suspension stability in alcoholic solution, significantly improves the anti-ability that hardens.Suspension and the brushability of the coating deflocculant adopting these patents above-mentioned to produce are excellent, and long-time placement not easily precipitates and hardens, but in these suspending agents without exception with the addition of organic substance, should not be used for needing lighting dry alcohol-base foundry coating.
CN101607298 A (publication date on December 23rd, 2009) discloses a kind of attapulgite suspending agent for casting alcohol-based coating, at Magnesiumaluminumsilicate content with mass percent be 80-85% recessed grogs on one or more particles wrapped up in inorganic nano aluminium oxide, nano silicon or nano titanium oxide form.This suspending agent is owing to adopting the preparation of one-component attapulgite, and performance is not still very good, and owing to the addition of nanometer particle, high expensive.
Prior art discloses some coating deflocculants although above-mentioned, certain needs can be met, but still there is certain defect in these coating deflocculants: alcohol water can not be met dual-purpose, and mostly in use need first just can use with after water initiation, limit range of application, and the production method of coating deflocculant is loaded down with trivial details, inapplicable industrial large-scale application.
Therefore, exist for coating deflocculant and further improve and optimize demand, this is also one of study hotspot and emphasis in this technical field, especially the power that is accomplished of the present invention and starting point place.
Summary of the invention
In order to overcome the above-mentioned technical problem that prior art exists, the present inventor is after having carried out a large amount of further investigations, provide a kind of production method simple, not containing organic additive, be applicable to the coating deflocculant that alcohol, water are dual-purpose, this suspending agent is specially adapted to light type quick-drying alcohol-base foundry coating.
The present invention is achieved through the following technical solutions, and a kind of production method of environmental protection dual-purpose type coating deflocculant, comprises the steps:
Step one, stirs bentonite, sodium carbonate and water, then pair roller, stacks, and the percentage by weight water content controlling pair roller sheet is 30-35%, obtains the bentonite of modification;
Step 2, mixes the bentonite of described modification with Concave-convex clay rod, lithium carbonate and water, pair roller, stacks, and the percentage by weight water content controlling pair roller sheet is 40-50%;
Step 3, product natural drying step 2 obtained or oven dry, broken, abrasive dust, to obtain final product.
Preferably, in step one, the consumption of described bentonite, sodium carbonate and water is: the bentonite of 10-30 weight portion, the sodium carbonate of 0.5-1.5 weight portion and appropriate water; In step 2, the consumption of described Concave-convex clay rod, lithium carbonate and water is: the Concave-convex clay rod of 65-85 weight portion, the lithium carbonate of 3-5 weight portion and appropriate water.Preferred further, in step one, the consumption of described bentonite, sodium carbonate and water is: the bentonite of 20 weight portions, the sodium carbonate of 1 weight portion and the water of 6 weight portions; In step 2, the consumption of described Concave-convex clay rod, lithium carbonate and water is: the water of the Concave-convex clay rod of 75 weight portions, the lithium carbonate of 4 weight portions and 15 weight portions.
Preferably, in step one, the time of described stacking is 10-24 hour.
Preferably, in step one, the percentage by weight water content controlling pair roller sheet is 33%.
Preferably, in step one and step 2, described pair roller carries out twice.
Preferably, in step 2, the time of described stacking is 24-48 hour.
Preferably, in step 2, the percentage by weight of control pair roller sheet is moisture is 45%.
Preferably, in step 3, till described abrasive dust proceeds to 200-300 order pressed powder; Preferred further, till described abrasive dust proceeds to 150 order pressed powders.
Compared with prior art, beneficial effect of the present invention is as follows:
(1) advantage of the multiple inorganic mineral such as the comprehensive bentonite of the present invention, sodium bentonite, Concave-convex clay rod, lithium bentonite and lithium base Concave-convex clay rod, overcome the deficiency of one-component, both there is sodium bentonite immersion hydration swelling performance, there is again organobentonite characteristic, in water and polar organic solvent are as ethanol, all can be dissolved into colloid or the fully swelling viscosity of coating that makes strengthens.Be applicable to water based paint, alcohol base-material coating makes thickener, suspension stabilizer, dope viscosity is increased and forms solvation film and dimensional network structure to support and to stop particles sink at base-material particle surface.This coating application, at metallurgical casting mould surface, can form dry thin layer very soon because etoh solvent is volatile, not only can furnace sand mold but also foundry goods can be made more bright and clean.
(2) bentonitic main component is montmorillonite, is the silicate clay ore deposit of a kind of layer structure, flaky crystal.The main component of Concave-convex clay rod is attapulgite, be a kind of layer of chain structure containing Shuifu County's zeopan clay mineral.Due to the restriction of crystal structure, montmorillonite and attapulgite have different forms and physicochemical properties, the interaction of montmorillonite and attapulgite must be there is in a solvent, add the interaction of sodium ion, lithium ion and silicone hydroxyl and magnesium aluminium ion, make it in water paint and alcohol-base paint, all have good thixotropy and be coated with performance.In addition, because this suspending agent is not containing organic additive, the amount of gas evolution from the coating of making is low, is particularly suitable for lighting type alcohol-base foundry coating field.
The present invention first obtains sodium bentonite with modification of sodium carbonate bentonite, use lithium carbonate modification sodium bentonite and Concave-convex clay rod again, obtain not containing the environmental protection dual-purpose type coating deflocculant of organic additive, the suspending agent of water-based and alcohol-base paint can be directly used in, and production method is simple, do not adopt poisonous and harmful reagent, be suitable for industrial large-scale application.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, some distortion and improvement can also be made.These all belong to protection scope of the present invention.
In the present invention, the weight counting of bentonite, sodium carbonate, Concave-convex clay rod and lithium carbonate is dry weight.
Embodiment 1
The present embodiment relates to a kind of production method of environmental protection dual-purpose type coating deflocculant, is made up of following steps:
Step one, stirs 20kg bentonite, 1kg sodium carbonate and 6kg water, then broken pair roller twice, stacks 17 hours, and the percentage by weight water content controlling pair roller sheet is 33%, obtains the bentonite of modification;
Step 2, mixes the bentonite of described modification with 75kg Concave-convex clay rod, 4kg lithium carbonate and 15kg water, broken pair roller twice, stacks 36 hours, and the percentage by weight water content controlling pair roller sheet is 45%;
Step 3, product natural drying step 2 obtained or oven dry, broken, abrasive dust to 150 order pressed powder, to obtain final product.
Embodiment 2
The present embodiment relates to a kind of production method of environmental protection dual-purpose type coating deflocculant, is made up of following steps:
Step one, stirs 10kg bentonite, 1.5kg sodium carbonate and 5kg water, then broken pair roller twice, stacks 24 hours, and the percentage by weight water content controlling pair roller sheet is 30%, obtains the bentonite of modification;
Step 2, mixes the bentonite of described modification with 65kg Concave-convex clay rod, 5kg lithium carbonate and 10kg water, broken pair roller twice, stacks 24 hours, and the percentage by weight water content controlling pair roller sheet is 50%;
Step 3, the product natural drying that step 2 is obtained or oven dry, broken, till abrasive dust to 200 order pressed powder, to obtain final product.
Embodiment 3
The present embodiment relates to a kind of production method of environmental protection dual-purpose type coating deflocculant, is made up of following steps:
Step one, stirs 30kg bentonite, 0.5kg sodium carbonate and 4kg water, then broken pair roller twice, stacks 10 hours, and the percentage by weight water content controlling pair roller sheet is 35%, obtains the bentonite of modification;
Step 2, mixes the bentonite of described modification with 85kg Concave-convex clay rod, 3kg lithium carbonate and 13kg water, broken pair roller twice, stacks 48 hours, and the percentage by weight water content controlling pair roller sheet is 40%;
Step 3, the product natural drying that step 2 is obtained or oven dry, broken, till abrasive dust to 300 order pressed powder, to obtain final product.
Comparative example 1
The difference of the present embodiment and embodiment 1 is: do not add lithium carbonate in step 2, does not namely adopt lithium carbonate to carry out modification to sodium bentonite and Concave-convex clay rod simultaneously.
Comparative example 2
The difference of the present embodiment and embodiment 2 is: do not add lithium carbonate in step 2, does not namely adopt lithium carbonate to carry out modification to sodium bentonite and Concave-convex clay rod simultaneously.
Comparative example 3
The difference of the present embodiment and embodiment 3 is: do not add lithium carbonate in step 2, does not namely adopt lithium carbonate to carry out modification to sodium bentonite and Concave-convex clay rod simultaneously.
Detection results
Implement above-described embodiment 1-3 and comparative example 1-3 respectively and obtain powder sample, and stir according to weight ratio 1:20 according to powder sample and coating, coating comprises water based paint and alcohol-base paint, and then at room temperature observe the whether layering of statistics coating in 24h, acquired results is as shown in table 1 below.
The result of table 1 embodiment 1-3 and comparative example 1-3
As seen from the above table, embodiment 1-3 obtain sample alcohol-base paint and water based paint all not stratified, the sample that comparative example 1-3 obtains is in alcohol-base paint layering, illustrate that the sample that embodiment 1-3 obtains all has good suspension stability in alcohol-base paint and water based paint, and sample Stratified stability in alcohol-base paint that comparative example 1-3 obtains is poor, the sample that embodiment 1-3 obtains is suitable for alcohol-base paint more, be conducive to the extensive use of alcohol-base paint, in addition, in embodiment of the present invention 1-3, production method is simple, do not adopt poisonous and hazardous reagent, be conducive to environmental protection, be suitable for industrial large-scale application.Therefore the sample that embodiment 1-3 obtains is a kind of alcohol radical of environment-friendly type and water base dual-purpose type coating deflocculant.Can reach a conclusion thus: in the step 2 of production method of the present invention, add lithium carbonate carry out modification to sodium bentonite and Concave-convex clay rod simultaneously, this is suitable for alcohol-base paint for the final coating deflocculant obtained simultaneously and water based paint has vital effect.
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (10)
1. a production method for environmental protection dual-purpose type coating deflocculant, is characterized in that, comprises the steps:
Step one, stirs bentonite, sodium carbonate and water, then pair roller, stacks, and the percentage by weight water content controlling pair roller sheet is 30-35%, obtains the bentonite of modification;
Step 2, mixes the bentonite of described modification with Concave-convex clay rod, lithium carbonate and water, pair roller, stacks, and the percentage by weight water content controlling pair roller sheet is 40-50%;
Step 3, product natural drying step 2 obtained or oven dry, broken, abrasive dust, to obtain final product.
2. the production method of a kind of environmental protection dual-purpose type coating deflocculant as claimed in claim 1, is characterized in that, in step one, the consumption of described bentonite, sodium carbonate and water is: the bentonite of 10-30 weight portion, the sodium carbonate of 0.5-1.5 weight portion and appropriate water; In step 2, the consumption of described Concave-convex clay rod, lithium carbonate and water is: the Concave-convex clay rod of 65-85 weight portion, the lithium carbonate of 3-5 weight portion and appropriate water.
3. the production method of a kind of environmental protection dual-purpose type coating deflocculant as claimed in claim 2, is characterized in that, in step one, the consumption of described bentonite, sodium carbonate and water is: the bentonite of 20 weight portions, the sodium carbonate of 1 weight portion and the water of 6 weight portions; In step 2, the consumption of described Concave-convex clay rod, lithium carbonate and water is: the water of the Concave-convex clay rod of 75 weight portions, the lithium carbonate of 4 weight portions and 15 weight portions.
4. the production method of a kind of environmental protection dual-purpose type coating deflocculant as claimed in claim 1, is characterized in that, in step one, the time of described stacking is 10-24 hour.
5. the production method of a kind of environmental protection dual-purpose type coating deflocculant as claimed in claim 1, is characterized in that, in step one, the percentage by weight water content controlling pair roller sheet is 33%.
6. the production method of a kind of environmental protection dual-purpose type coating deflocculant as claimed in claim 1, is characterized in that, in step one and step 2, described pair roller carries out twice.
7. the production method of a kind of environmental protection dual-purpose type coating deflocculant as claimed in claim 1, is characterized in that, in step 2, the time of described stacking is 24-48 hour.
8. the production method of a kind of environmental protection dual-purpose type coating deflocculant as claimed in claim 1, is characterized in that, in step 2, the percentage by weight of control pair roller sheet is moisture is 45%.
9. the production method of a kind of environmental protection dual-purpose type coating deflocculant as claimed in claim 1, is characterized in that, in step 3, till described abrasive dust proceeds to 200-300 order pressed powder.
10. the production method of a kind of environmental protection dual-purpose type coating deflocculant as claimed in claim 9, is characterized in that, till described abrasive dust proceeds to 150 order pressed powders.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105855459A (en) * | 2016-05-27 | 2016-08-17 | 马鞍山市兴隆铸造有限公司 | High-temperature good-strength quartz-based expendable pattern paint modified by mica powder and preparation method of high-temperature good-strength quartz-based expendable pattern paint |
| CN107470553A (en) * | 2017-08-30 | 2017-12-15 | 马鞍山市三川机械制造有限公司 | A kind of processing method for lifting casting mould yield rate |
| CN109108217A (en) * | 2018-09-21 | 2019-01-01 | 武汉纺织大学 | A kind of efficient suspending agent of low-cost environment-friendly alcohol-base foundry coating and preparation method thereof |
| CN114261968A (en) * | 2021-12-15 | 2022-04-01 | 苏州国建慧投矿物新材料有限公司 | Lithium-based modified composite clay and preparation method thereof |
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| GB1182012A (en) * | 1966-01-10 | 1970-02-25 | Foseco Trading Ag | Fibre-containing heat-insulating compositions |
| CN1923402A (en) * | 2006-08-25 | 2007-03-07 | *** | Production method of alcohol-based concave-convex stick suspending agent |
| CN101279355A (en) * | 2008-05-26 | 2008-10-08 | 昆明理工大学 | Duality foundry coating suspending agent |
| CN102923985A (en) * | 2012-11-30 | 2013-02-13 | 吉林大学 | Method using lithium bentonite as cement product additive |
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2015
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| GB1182012A (en) * | 1966-01-10 | 1970-02-25 | Foseco Trading Ag | Fibre-containing heat-insulating compositions |
| CN1923402A (en) * | 2006-08-25 | 2007-03-07 | *** | Production method of alcohol-based concave-convex stick suspending agent |
| CN101279355A (en) * | 2008-05-26 | 2008-10-08 | 昆明理工大学 | Duality foundry coating suspending agent |
| CN102923985A (en) * | 2012-11-30 | 2013-02-13 | 吉林大学 | Method using lithium bentonite as cement product additive |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105855459A (en) * | 2016-05-27 | 2016-08-17 | 马鞍山市兴隆铸造有限公司 | High-temperature good-strength quartz-based expendable pattern paint modified by mica powder and preparation method of high-temperature good-strength quartz-based expendable pattern paint |
| CN107470553A (en) * | 2017-08-30 | 2017-12-15 | 马鞍山市三川机械制造有限公司 | A kind of processing method for lifting casting mould yield rate |
| CN109108217A (en) * | 2018-09-21 | 2019-01-01 | 武汉纺织大学 | A kind of efficient suspending agent of low-cost environment-friendly alcohol-base foundry coating and preparation method thereof |
| CN109108217B (en) * | 2018-09-21 | 2020-01-03 | 武汉纺织大学 | Low-cost environment-friendly alcohol-based casting coating efficient suspending agent and preparation method thereof |
| CN114261968A (en) * | 2021-12-15 | 2022-04-01 | 苏州国建慧投矿物新材料有限公司 | Lithium-based modified composite clay and preparation method thereof |
| CN114261968B (en) * | 2021-12-15 | 2023-01-06 | 苏州国建慧投矿物新材料有限公司 | Lithium-based modified composite clay and preparation method thereof |
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