CN104923719B - 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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- CN104923719B CN104923719B CN201510247440.1A CN201510247440A CN104923719B CN 104923719 B CN104923719 B CN 104923719B CN 201510247440 A CN201510247440 A CN 201510247440A CN 104923719 B CN104923719 B CN 104923719B
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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, more particularly to a kind of production method of environmentally friendly dual-purpose coating deflocculant.
Background technology
Coating is to solve scab, improves the maximally efficient measure of surface quality of continuous castings.Alcohol radical quick drying paint has
There is the shortening engineering time, improve the advantage of castings production efficiency, occupy the dominant contribution of Coating Market for a long time.
Suspension stabilizer is the material for making coating have suspension stability and appropriate rheological property, the addition of suspension stabilizer
The overall performance of coating should be made to be largely increased.
Alcohol-base foundry coating suspending agent is experienced by sodium bentonite to bentonite development course, Na-bentonite
Soil swellability in alcoholic solvent is bad, and suspension effect is poor, and organobentonite price is higher and must adopt poisonous dimethylbenzene
Initiation could be used.
CN85105821A (publication date on April 29th, 1987) discloses a kind of manufacture method of lithium bentonite suspending agent, carries
Go out and lithium bentonite is changed into calcium bentonite by cation exchange reaction, then use bridging agent bridging, and made with denatured alcohol
Alcogel.It is used in alcohol radical quick drying paint, with preferable suspension, coating using lithium bentonite suspending agent prepared by the method
Property and labor condition, but the suspending agent needs to use bridging agent bridging, and alcogel is made with denatured alcohol, and lithium soil micelle is in alcohol
In solution, easily dehydration makes coating hardened.
CN1038817C (publication date on June 24th, 1998) discloses a kind of composite diffusion for cast paint and suspends
Agent, the composite suspension agent for the coating of water or organic solvent, respectively by 75-85% rectorites, 3-5% tertiary sodium phosphates, 4-
10% sodium carboxymethyl cellulose or 65-78% rectorites, 10-18% tertiary sodium phosphates, 2-5% sodium tripolyphosphates, 2-8% polyethylene
Butyral, 2-5% Polyethylene Glycol, 1-4% calcium stearates composition.Suspension using the coating of the dispersed suspending agent production is good,
Refractoriness is high, and brushability is excellent, and long-time is placed and is difficult to precipitate and hardened.
CN1923402A (publication date on March 7th, 2007) discloses a kind of production method of alcohol-based concave-convex stick suspending agent, and this hangs
Floating agent includes following component (by weight percentage)：Attapulgite clay 65-85%, bentonite 5-25%, magnesium oxide 1-5%,
Sodium silicate 1-8%, Polyethylene Glycol 0.05-5%.Make alcohol-base foundry coating when need not be caused with water, with suspensibility height,
Brushing performance is good, do not precipitate, do not lump, good fluidity and the characteristics of strong anti-stick grittiness.
CN101279355A (publication date on October 08th, 2008) discloses a kind of duality foundry coating suspending agent, outstanding with SN
Floating agent 3-5 parts, attapulgite 1-3 parts are primary raw material, add the dispersion of 0.2-0.8 parts quaternary cationicses after mixing
And moistening.This coating deflocculant strong adaptability, can be used directly, insensitive to the pH value of coating, water based paint, alcohol-base paint
Satisfactory suspension effect is can reach.
CN101444824A (publication date on June 3rd, 2009) discloses a kind of bentonite coating deflocculant, each in suspending agent
Composition weight content is：Bentonite 38～58%, artificial mica 15～26%, sodium borate 18～22%, phosphatase 11 4～25%, silicon
Colloidal sol 2～5%, sodium carboxymethyl cellulose 1～5%.The bentonite coating deflocculant refractoriness is high, and crack resistance and suspension compared with
It is good, can effectively improve the surface quality of cast product, improve foundry goods fineness.
CN102371334A (publication date 14 days 03 year 2012) discloses a kind of preparation of casting alcohol-based coating suspending agent
Method, by attapulgite 20-30 parts, calcium-base bentonite 30-40 parts, sodium carbonate 10-15 parts, Polyethylene Glycol 1-2 parts, sodium silicate 5-
8 parts, Zinc Oxide 1-2 part, zirconium oxide 1-2 parts weigh dispensing by proportioning and mix, adds the phosphate aqueous solution of 50-60%, heat up anti-
Suspension Agent of Alcohol Based Coatings should be obtained.The suspending agent shows good dispersibility and suspension stability in alcoholic solution, significantly
Improve and resist hardened ability.Suspension and brushability using the coating deflocculant of above-mentioned these patent productions is excellent, puts for a long time
Put be difficult precipitation and it is hardened, but in these suspending agents without exception with the addition of organic substance, should not be used in needs to light drying
Alcohol-base foundry coating.
CN101607298 A (publication date on December 23rd, 2009) disclose a kind of casting alcohol-based coating and are suspended with attapulgite clay
Agent, wraps up inorganic nano aluminium oxide, nano-silica on the attapulgite clay particle in Magnesiumaluminumsilicate content with mass percent as 80-85%
One or more granule in SiClx or nano titanium oxide is constituted.The suspending agent is due to using one-component attapulgite system
Standby, performance is not still very good, and due to the addition of nanometer particle, high expensive.
Although above-mentioned prior art discloses some coating deflocculants, certain needs are disclosure satisfy that, these coating hang
Floating agent still suffers from certain defect：Alcohol water can not be met dual-purpose, and be needed in use mostly first with ability after water initiation
Can use, limit range of application, and the production method of coating deflocculant is loaded down with trivial details, not apply to industrial large-scale application.
Therefore, for coating deflocculant has further improvement and optimizes demand, this is also grinding in the technical field
Study carefully one of focus and emphasis, the power and starting point that even more present invention is accomplished is located.
The content of the invention
For the above-mentioned technical problem for overcoming prior art to exist, the present inventor is carrying out substantial amounts of further investigation
Afterwards, there is provided a kind of production method is simple, without organic additive, it is adaptable to the dual-purpose coating deflocculant of alcohol, water, this hangs
Floating agent is particularly well-suited to light the quick-drying alcohol-base foundry coating of type.
The present invention is achieved through the following technical solutions, a kind of production method of environmentally friendly dual-purpose coating deflocculant, including as
Lower step：
Step one, bentonite, sodium carbonate and water are stirred, and then to roller, are stacked, are controlled the weight percent to roller piece
It is 30-35% than water content, obtains modified bentonite；
Step 2, the modified bentonite is mixed homogeneously with attapulgite clay, lithium carbonate and water, to roller, stacks,
The percentage by weight water content to roller piece is controlled for 40-50%；
Step 3, the product natural drying that step 2 is obtained or drying, crush, and pulverizing is obtained final product.
Preferably, in step one, the consumption of the bentonite, sodium carbonate and water is：The bentonite of 10-30 weight portions,
The sodium carbonate of 0.5-1.5 weight portions and appropriate water；In step 2, the consumption of the attapulgite clay, lithium carbonate and water is：
The attapulgite clay of 65-85 weight portions, the lithium carbonate of 3-5 weight portions and appropriate water.It is further preferred that in step one,
The consumption of the bentonite, sodium carbonate and water is：The water of the bentonite of 20 weight portions, the sodium carbonate of 1 weight portion and 6 weight portions；
In step 2, the consumption of the attapulgite clay, lithium carbonate and water is：The attapulgite clay of 75 weight portions, 4 weight portions
The water of lithium carbonate and 15 weight portions.
Preferably, in step one, the time of the stacking is 10-24 hours.
Preferably, in step one, the percentage by weight water content to roller piece is controlled for 33%.
Preferably, it is in step one and step 2, described that roller is carried out twice.
Preferably, in step 2, the time of the stacking is 24-48 hours.
Preferably, in step 2, it is 45% to control the percentage by weight to roller piece aqueous.
Preferably, in step 3, the pulverizing is carried out to 200-300 mesh pressed powders；It is further preferred that described
Pulverizing is carried out to 150 mesh pressed powders.
Compared with prior art, beneficial effects of the present invention are as follows：
(1) present invention synthesis bentonite, sodium bentonite, attapulgite clay, lithium bentonite and lithio attapulgite
The advantage of various inorganic minerals such as clay, overcomes the shortcomings of one-component, both with sodium bentonite immersion hydration swelling
Can, there is organobentonite characteristic again, colloid can be dissolved in water and polar organic solvent such as ethanol or fully swelling be made
The viscosity of coating strengthens.Make thickening agent, suspension stabilizer suitable for water based paint, alcohol base material coating, dope viscosity is increased simultaneously
Form solvation thin film and dimensional network structure to support and prevent particles sink in base material particle surface.This coating application exists
Metallurgical casting mould surface, can quickly form dry thin layer as etoh solvent is volatile, not only furnace sand mold but also can make casting
Part is more bright and clean.
(2) bentonitic main component is montmorillonite, is the silicate clay ore deposit of a kind of layer structure, flaky crystal.It is recessed
The main component of convex rod stone clay is attapulgite, is the clay mineral of zeopan containing Shuifu County of a kind of layer of chain structure.By
In the restriction of crystal structure, montmorillonite and attapulgite have different forms and physicochemical properties, must deposit in a solvent
In the interaction of montmorillonite and attapulgite, along with the interaction of sodium ion, lithium ion and silicone hydroxyl and magnesium aluminium ion,
Make which that good thixotropy is respectively provided with water paint and alcohol-base paint and performance is coated with.Further, since the suspending agent is not contained
Organic additive, the amount of gas evolution from the coating of making are low, are particularly suitable for lighting type alcohol-base foundry coating field.
The present invention first obtains sodium bentonite with modification of sodium carbonate bentonite, then with the modified sodium bentonite of lithium carbonate and recessed
Convex rod stone clay, obtains the environmentally friendly dual-purpose coating deflocculant without organic additive, can be directly used for aqueouss and alcohol-base paint
Suspending agent, and production method is simple, not using poisonous and harmful reagent, is suitable to industrial large-scale application.
Specific embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill to this area
For personnel, without departing from the inventive concept of the premise, some deformations and improvement can also be made.These belong to the present invention
Protection domain.
In the present invention, the weight of bentonite, sodium carbonate, attapulgite clay and lithium carbonate is counted and is dry weight.
Embodiment 1
The present embodiment is related to a kind of production method of environmentally friendly dual-purpose coating deflocculant, is made up of following steps：
Step one, 20kg bentonite, 1kg sodium carbonate and 6kg water are stirred, and are then crushed to roller twice, are stacked 17
Hour, it is 33% to control the percentage by weight water content to roller piece, obtains modified bentonite；
Step 2, the modified bentonite is mixed with 75kg attapulgite clays, 4kg lithium carbonate and 15kg water
It is even, crush to roller twice, stack 36 hours, the percentage by weight water content to roller piece is controlled for 45%；
Step 3, the product natural drying that step 2 is obtained or drying, crush, pulverizing to 150 mesh pressed powders, i.e.,
.
Embodiment 2
The present embodiment is related to a kind of production method of environmentally friendly dual-purpose coating deflocculant, is made up of following steps：
Step one, 10kg bentonite, 1.5kg sodium carbonate and 5kg water are stirred, and are then crushed to roller twice, are stacked
24 hours, it was 30% to control the percentage by weight water content to roller piece, obtains modified bentonite；
Step 2, the modified bentonite is mixed with 65kg attapulgite clays, 5kg lithium carbonate and 10kg water
It is even, crush to roller twice, stack 24 hours, the percentage by weight water content to roller piece is controlled for 50%；
Step 3, the product natural drying that step 2 is obtained or drying, crush, pulverizing to 200 mesh pressed powders,
Obtain final product.
Embodiment 3
The present embodiment is related to a kind of production method of environmentally friendly dual-purpose coating deflocculant, is made up of following steps：
Step one, 30kg bentonite, 0.5kg sodium carbonate and 4kg water are stirred, and are then crushed to roller twice, are stacked
10 hours, it was 35% to control the percentage by weight water content to roller piece, obtains modified bentonite；
Step 2, the modified bentonite is mixed with 85kg attapulgite clays, 3kg lithium carbonate and 13kg water
It is even, crush to roller twice, stack 48 hours, the percentage by weight water content to roller piece is controlled for 40%；
Step 3, the product natural drying that step 2 is obtained or drying, crush, pulverizing to 300 mesh pressed powders,
Obtain final product.
Comparative example 1
The present embodiment with the difference of embodiment 1 is：Lithium carbonate is not added with step 2, i.e., it is simultaneously not right using lithium carbonate
Sodium bentonite and attapulgite clay are modified.
Comparative example 2
The present embodiment with the difference of embodiment 2 is：Lithium carbonate is not added with step 2, i.e., it is simultaneously not right using lithium carbonate
Sodium bentonite and attapulgite clay are modified.
Comparative example 3
The present embodiment with the difference of embodiment 3 is：Lithium carbonate is not added with step 2, i.e., it is simultaneously not right using lithium carbonate
Sodium bentonite and attapulgite clay are modified.
Detection results
Implement above-described embodiment 1-3 and comparative example 1-3 respectively and obtain powder sample, and according to powder sample and coating according to
Weight compares 1:20 are stirred, and coating includes water based paint and alcohol-base paint, and then in 24h, observation statistics coating is at room temperature
No layering, acquired results are as shown in table 1 below.
The result of 1 embodiment 1-3 of table and comparative example 1-3
As seen from the above table, the sample that embodiment 1-3 is obtained is not stratified in alcohol-base paint and water based paint, comparative example 1-3
The sample of acquisition is layered in alcohol-base paint, illustrates that the sample that embodiment 1-3 is obtained has good in alcohol-base paint and water based paint
Good suspension stability, and the sample that comparative example 1-3 is obtained Stratified stability in alcohol-base paint is poor, what embodiment 1-3 was obtained
Sample is more suitable for alcohol-base paint, is conducive to the extensive application of alcohol-base paint, in addition, production method in embodiment of the present invention 1-3
Simply, environmental conservation is not conducive to using poisonous and hazardous reagent, is suitable to industrial large-scale application.Therefore embodiment
The sample that 1-3 is obtained is a kind of alcohol radical and water base dual-purpose coating deflocculant of environment-friendly type.It follows that：At this
Add lithium carbonate to be modified to sodium bentonite and attapulgite clay in the step of bright production method two simultaneously, this for
The final coating deflocculant for obtaining is suitable to alcohol-base paint simultaneously and water based paint has vital effect.
Above the specific embodiment of the present invention is described.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make various modifications or modification within the scope of the claims, this not shadow
Ring the flesh and blood of the present invention.
Claims (9)
1. a kind of production method of environmentally friendly dual-purpose coating deflocculant, it is characterised in that comprise the steps：
Step one, bentonite, sodium carbonate and water are stirred, and then to roller, are stacked, and control to contain the percentage by weight of roller piece
The water yield is 30-35%, obtains modified bentonite；
Step 2, the modified bentonite is mixed homogeneously with attapulgite clay, lithium carbonate and water, to roller, stacks, control
It is 40-50% to the percentage by weight water content of roller piece；
Step 3, the product natural drying that step 2 is obtained or drying, crush, and pulverizing is obtained final product.
2. a kind of production method of environmentally friendly dual-purpose coating deflocculant as claimed in claim 1, it is characterised in that step one
In, the consumption of the bentonite, sodium carbonate and water is：The bentonite of 10-30 weight portions, the sodium carbonate of 0.5-1.5 weight portions and
Appropriate water；In step 2, the consumption of the attapulgite clay, lithium carbonate and water is：The attapulgite of 65-85 weight portions glues
Soil, the lithium carbonate of 3-5 weight portions and appropriate water.
3. a kind of production method of environmentally friendly dual-purpose coating deflocculant as claimed in claim 2, it is characterised in that step one
In, the consumption of the bentonite, sodium carbonate and water is：The bentonite of 20 weight portions, the sodium carbonate of 1 weight portion and 6 weight portions
Water；In step 2, the consumption of the attapulgite clay, lithium carbonate and water is：The attapulgite clay of 75 weight portions, 4 weight
The water of the lithium carbonate and 15 weight portions of part.
4. a kind of production method of environmentally friendly dual-purpose coating deflocculant as claimed in claim 1, it is characterised in that step one
In, the time of the stacking is 10-24 hours.
5. a kind of production method of environmentally friendly dual-purpose coating deflocculant as claimed in claim 1, it is characterised in that step one
In, the percentage by weight water content to roller piece is controlled for 33%.
6. a kind of production method of environmentally friendly dual-purpose coating deflocculant as claimed in claim 1, it is characterised in that step one and
It is in step 2, described that roller is carried out twice.
7. a kind of production method of environmentally friendly dual-purpose coating deflocculant as claimed in claim 1, it is characterised in that step 2
In, the time of the stacking is 24-48 hours.
8. a kind of production method of environmentally friendly dual-purpose coating deflocculant as claimed in claim 1, it is characterised in that step 2
In, it is 45% to control the percentage by weight to roller piece aqueous.
9. a kind of production method of environmentally friendly dual-purpose coating deflocculant as claimed in claim 1, it is characterised in that step 3
In, the pulverizing is carried out to 200-300 mesh pressed powders.
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| 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 |
| 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 |
| 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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| GB1182012A (en) * | 1966-01-10 | 1970-02-25 | Foseco Trading Ag | Fibre-containing heat-insulating compositions |
| CN100388990C (en) * | 2006-08-25 | 2008-05-21 | 蒋文兰 | 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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