CN104861761A - Production method of environment-friendly thickening thixotropic agent for waterborne coatings - Google Patents
Production method of environment-friendly thickening thixotropic agent for waterborne coatings Download PDFInfo
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- CN104861761A CN104861761A CN201510245893.0A CN201510245893A CN104861761A CN 104861761 A CN104861761 A CN 104861761A CN 201510245893 A CN201510245893 A CN 201510245893A CN 104861761 A CN104861761 A CN 104861761A
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- water
- thixotropic agent
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- thickening thixotropic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/346—Clay
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/43—Thickening agents
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2203—Oxides; Hydroxides of metals of lithium
Abstract
The invention relates to a production method of an environment-friendly thickening thixotropic agent for waterborne coatings. The production method comprises the following steps: Step one, drying and mixing attapulgite clay, sepiolite and bentonite raw ores to obtain a mixture, coarsely crushing the mixture to obtain a particle pre-mixture, adding lithium hydroxide, mixing particle pre-mixture and lithium hydroxide to obtain a particle mixture; Step two, spraying water to the particle mixture, extruding the particle mixture to form a flake mixture; Step three, drying the flake mixture, then placing the dried flake mixture into a stainless steel beating pool for beating, performing high-speed shearing through a emulsifying machine to obtain slurry, treating the obtained slurry through a high-pressure homogenizer to obtain an emulsion; Step four, removing impurities of the emulsion through a vibrating screen, dehydrating the emulsion through a centrifuge to obtain a cake material; Step five, drying, crushing and grinding the cake material to obtain a mineral-based thickening thixotropic agent for waterborne coatings. According to the production method, the minerals are readily available and low in cost; the operation steps are simple and easy to control; the thickening thixotropic agent has good thickening thixotropic effect; the waterborne coatings are short in drying time and suitable for large-scale application in industry.
Description
Technical field
The present invention relates to a kind of production method of thickening thixotropic agent, be specifically related to a kind of production method of water-borne coatings environmental protection thickening thixotropic agent.
Background technology
Water-borne coatings, using water as dispersion medium, only adopts a small amount of hypotoxicity alcohol ether organic solvent, safety and environmental protection, economizes on resources, and eliminates the danger of presence of fire during construction, is conducive to reducing topsoil; Water-borne coatings is good to material surface adaptability, and can construct equally at wet environment, coating adhesion is strong; Water-borne coatings container and instrument all can wash by water, and the coating be not finished can be placed on shady and cool place and preserve, and have namely saved coating resource and have additionally reduced consumption to cleaning solvent; Water-borne coatings electrophoresis film is even, and flattening property is good, and certain thickness film can be coated in tiny gap and corner, easy construction, and barrier propterty is good.Therefore, water-borne coatings has in industry and uses widely.
The auxiliary agent that water-borne coatings is conventional has film coalescence aid, thickening material, dispersion agent, wetting agent, defoamer, softening agent, antimildew disinfectant etc., thickening material has inorganic thickening agent and organic thickening agent, in water-borne coatings, usual used organic thickening agent mostly is the organic polymer with long chain-like molecular structure, system thickening is made by winding and bridge linking effect after these polymkeric substance disperse in water, but this network structure formed by winding and bridge linking effect is not easily broken, system is made to lack enough thixotroping abilities, organic thickening agent added that I haven't seen you for ages causes the color stuffing sedimentation layering of system, and added and make system in use at most because thixotroping value is low and occur poor fluidity, rheological is bad, the phenomenons such as construction is inconvenient.Inorganic thickening agent is a class water-swelling and forms thixotropic gel mineral, mainly contains wilkinite, attapulgite, pure aluminium silicate etc.
CN103666010A (publication date is on 03 26th, 2014) discloses a kind of inorganic thickening agent for coating thickening, it is made up of the component of following weight part: attapulgite 5-7 part, calcium-base bentonite 2-3 part, silica 1-2 parts, be prepared from through mixing, stirring, pack, add in coating and can play dispersion, thickening and levelling effect, and there is good mobility, be a kind ofly effectively can overcome the defect existed when wilkinite or attapulgite are used alone.
Prior art discloses some inorganic thickening agents for coating thickening although above-mentioned, certain needs can be met, but still there is certain defect in these: in actual use, need above-mentioned inorganic thickening agent to add by the 3-8% of coating quality just can produce a desired effect, water-borne coatings drying process is slow, the dry time is longer, is inconvenient to use.
Therefore, exist for water-borne coatings thickening thixotropic agent and preparation method thereof 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 prior art exist thickening thixotropic agent cause water-borne coatings cannot in time drying technical problem, the present inventor after having carried out a large amount of further investigations, thus completes the present invention.
The present invention is achieved through the following technical solutions, and in particular to a kind of production method of water-borne coatings environmental protection thickening thixotropic agent, comprises the steps:
Step one, mixes attapulgite clay, sepiolite, the airing of wilkinite raw ore, uses crusher coarse crushing to moisture weight content≤20%, obtains particle pre-mix, adds lithium hydroxide, fully mix, and obtains granular mixture;
Step 2, sprays water to described granular mixture, and coupling is squeezed into flaky mixture to roller and three-roller;
Step 3, covers film by described flaky mixture, stacks more than 15 days, flaky mixture after airing and water, to moisture weight content≤20%, are then put into stainless steel troughing and are pulled an oar, mulser high speed shear by airing, high pressure homogenizer process, obtains emulsion;
Step 4, by described emulsion by vibratory screening apparatus removal of impurities, centrifuge dewatering, obtains biscuit;
Step 5, by described biscuit airing to moisture weight content 10 ~ 15%, then broken, abrasive dust, obtains mineral based waterborne coatings thickening thixotropic agent.
Preferably, in step one, the attapulgite clay after airing, sepiolite, wilkinite raw ore mix according to weight ratio 3 ︰ 1 ︰ 1.
Preferably, in step one, the particle diameter of described particle pre-mix is 3 ± 1mm.
Preferably, in step one, the weight of described lithium hydroxide is equivalent to 2% of the weight of described particle pre-mix.
Preferably, in step 2, be 43 ± 2% to described granular mixture water spray to moisture weight content.
Preferably, in step 2, the spacing Wei≤2mm of described three-roller.
Preferably, in step 3, during making beating, the flaky mixture after described airing and the weight ratio of water are 1 ︰ 10.
Preferably, in step 3, the time of mulser high speed shear is 2 hours.
Preferably, in step 3, the pressure of described high pressure homogenizer is 90MPa.
Preferably, in step 4, described vibratory screening apparatus is 200 orders.
Compared with prior art, beneficial effect of the present invention is as follows: production method provided by the invention is by adopting cheap attapulgite clay, sepiolite, wilkinite raw ore as raw material, and by pulverizing, mixing, extruding, making beating, high speed shear, high-pressure homogeneous, the optimization of the series of steps such as removal of impurities, dehydration, fragmentation, abrasive dust, especially add lithium hydroxide when mixing, thus obtain mineral based waterborne coatings thickening thixotropic agent.The mineral that the present invention adopts are easy to get, and cost is low, and operation steps is simple, and easily control, and thickening thixotropic effects is good, water-borne coatings is also short, easy to use for time of drying, is suitable for industrially large-scale application.
Embodiment
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.
Embodiment 1
The present embodiment relates to a kind of production method of water-borne coatings environmental protection thickening thixotropic agent, is made up of following steps:
Step one, after attapulgite clay, sepiolite, wilkinite raw ore airing to moisture weight content 15%, mix according to weight ratio 3 ︰ 1 ︰ 1, particle diameter is become to be the particle pre-mix of 4mm with crusher coarse crushing, add lithium hydroxide, the weight of lithium hydroxide is equivalent to 2% of the weight of particle pre-mix, fully mixes, and obtains granular mixture;
Step 2, be 41% to granular mixture water spray to moisture weight content, coupling is squeezed into flaky mixture to the three-roller that roller and spacing are 1mm;
Step 3, flaky mixture is covered film, stacking was more than 15 days, airing is to moisture weight content 10%, then be that 1 ︰ 10 puts into stainless steel troughing and pulls an oar by the flaky mixture after airing and water according to weight ratio, mulser high speed shear 2 hours, the process of 90MPa high pressure homogenizer, obtains emulsion;
Step 4, by emulsion by 200 order vibratory screening apparatus removal of impurities, centrifuge dewatering, obtains biscuit;
Step 5, by biscuit airing to moisture weight content 10%, then broken, abrasive dust, obtains mineral based waterborne coatings thickening thixotropic agent.
Embodiment 2
The present embodiment relates to a kind of production method of water-borne coatings environmental protection thickening thixotropic agent, is made up of following steps:
Step one, after attapulgite clay, sepiolite, wilkinite raw ore airing to moisture weight content 20%, mix according to weight ratio 3 ︰ 1 ︰ 1, particle diameter is become to be the particle pre-mix of 3mm with crusher coarse crushing, add lithium hydroxide, the weight of lithium hydroxide is equivalent to 2% of the weight of particle pre-mix, fully mixes, and obtains granular mixture;
Step 2, be 42% to granular mixture water spray to moisture weight content, coupling is squeezed into flaky mixture to the three-roller that roller and spacing are 2mm;
Step 3, flaky mixture is covered film, stacking was more than 15 days, airing is to moisture weight content 15%, then be that 1 ︰ 10 puts into stainless steel troughing and pulls an oar by the flaky mixture after airing and water according to weight ratio, mulser high speed shear 2 hours, the process of 90MPa high pressure homogenizer, obtains emulsion;
Step 4, by emulsion by 200 order vibratory screening apparatus removal of impurities, centrifuge dewatering, obtains biscuit;
Step 5, by biscuit airing to moisture weight content 12%, then broken, abrasive dust, obtains mineral based waterborne coatings thickening thixotropic agent.
Embodiment 3
The present embodiment relates to a kind of production method of water-borne coatings environmental protection thickening thixotropic agent, is made up of following steps:
Step one, after attapulgite clay, sepiolite, wilkinite raw ore airing to moisture weight content 15%, mix according to weight ratio 3 ︰ 1 ︰ 1, particle diameter is become to be the particle pre-mix of 2mm with crusher coarse crushing, add lithium hydroxide, the weight of lithium hydroxide is equivalent to 2% of the weight of particle pre-mix, fully mixes, and obtains granular mixture;
Step 2, be 43% to granular mixture water spray to moisture weight content, coupling is squeezed into flaky mixture to the three-roller that roller and spacing are 1mm;
Step 3, flaky mixture is covered film, stacking was more than 15 days, airing is to moisture weight content 20%, then be that 1 ︰ 10 puts into stainless steel troughing and pulls an oar by the flaky mixture after airing and water according to weight ratio, mulser high speed shear 2 hours, the process of 90MPa high pressure homogenizer, obtains emulsion;
Step 4, by emulsion by 200 order vibratory screening apparatus removal of impurities, centrifuge dewatering, obtains biscuit;
Step 5, by biscuit airing to moisture weight content 13%, then broken, abrasive dust, obtains mineral based waterborne coatings thickening thixotropic agent.
Embodiment 4
The present embodiment relates to a kind of production method of water-borne coatings environmental protection thickening thixotropic agent, is made up of following steps:
Step one, after attapulgite clay, sepiolite, wilkinite raw ore airing to moisture weight content 10%, mix according to weight ratio 3 ︰ 1 ︰ 1, particle diameter is become to be the particle pre-mix of 1mm with crusher coarse crushing, add lithium hydroxide, the weight of lithium hydroxide is equivalent to 2% of the weight of particle pre-mix, fully mixes, and obtains granular mixture;
Step 2, be 44% to granular mixture water spray to moisture weight content, coupling is squeezed into flaky mixture to the three-roller that roller and spacing are 2mm;
Step 3, flaky mixture is covered film, stacking was more than 15 days, airing is to moisture weight content 5%, then be that 1 ︰ 10 puts into stainless steel troughing and pulls an oar by the flaky mixture after airing and water according to weight ratio, mulser high speed shear 2 hours, the process of 90MPa high pressure homogenizer, obtains emulsion;
Step 4, by emulsion by 200 order vibratory screening apparatus removal of impurities, centrifuge dewatering, obtains biscuit;
Step 5, by biscuit airing to moisture weight content 14%, then broken, abrasive dust, obtains mineral based waterborne coatings thickening thixotropic agent.
Embodiment 5
The present embodiment relates to a kind of production method of water-borne coatings environmental protection thickening thixotropic agent, is made up of following steps:
Step one, after attapulgite clay, sepiolite, wilkinite raw ore airing to moisture weight content 5%, mix according to weight ratio 3 ︰ 1 ︰ 1, particle diameter is become to be the particle pre-mix of 3mm with crusher coarse crushing, add lithium hydroxide, the weight of lithium hydroxide is equivalent to 2% of the weight of particle pre-mix, fully mixes, and obtains granular mixture;
Step 2, be 45% to granular mixture water spray to moisture weight content, coupling is squeezed into flaky mixture to the three-roller that roller and spacing are 1mm;
Step 3, flaky mixture is covered film, stacking was more than 15 days, airing is to moisture weight content 10%, then be that 1 ︰ 10 puts into stainless steel troughing and pulls an oar by the flaky mixture after airing and water according to weight ratio, mulser high speed shear 2 hours, the process of 90MPa high pressure homogenizer, obtains emulsion;
Step 4, by emulsion by 200 order vibratory screening apparatus removal of impurities, centrifuge dewatering, obtains biscuit;
Step 5, by biscuit airing to moisture weight content 15%, then broken, abrasive dust, obtains mineral based waterborne coatings thickening thixotropic agent.
Comparative example 1
Take 6kg attapulgite, 3kg calcium-base bentonite, 1kg silicon-dioxide, mix, stir, obtain a kind of inorganic thickening agent for coating thickening.
Comparative example 2
Take 7kg attapulgite, 2.5kg calcium-base bentonite, 1.5kg silicon-dioxide, mix, stir, obtain a kind of inorganic thickening agent for coating thickening.
Comparative example 3
Take 7kg attapulgite, 2kg calcium-base bentonite, 1kg silicon-dioxide, mix, stir, obtain a kind of inorganic thickening agent for coating thickening.
Comparative example 4
Take 5kg attapulgite, 3kg calcium-base bentonite, 2kg silicon-dioxide, mix, stir, obtain a kind of inorganic thickening agent for coating thickening.
Comparative example 5
Take 5kg attapulgite, 3.5kg calcium-base bentonite, 1.5kg silicon-dioxide, mix, stir, obtain a kind of inorganic thickening agent for coating thickening.
Detection results
Implement above-described embodiment 1-5 and comparative example 1-5 respectively, and the sample that embodiment 1-5 and comparative example 1-5 obtains is added in coating according to 5% of coating quality, then be coated on respectively on indoor wall under the condition of uniform temp (room temperature) and relative humidity (50%), thickness is 1mm, then add up the time of drying of each coating respectively, acquired results is as shown in table 1 below.
The result of table 1 embodiment 1-5 and comparative example 1-5
From upper table 1, time of drying in embodiment 1-5 is at 23.5-25.5h, and the time of drying of comparative example 1-5 is at 46-57h, fall time of drying in embodiment 1-5 is remarkable, illustrate that production method provided by the invention is by adopting cheap attapulgite clay, sepiolite, wilkinite raw ore is as raw material, and by pulverizing, mixing, extruding, making beating, high speed shear, high-pressure homogeneous, removal of impurities, dehydration, broken, considering of the series of factors such as abrasive dust, thus make the mineral based waterborne coatings thickening thixotropic agent of acquisition when being applied to water-borne coatings, relative contrast's example can shorten time of drying, facilitate use, and the mineral that the present invention adopts are easy to get, cost is low, operation steps is simple, easy control, thickening thixotropic effects is suitable with comparative example, therefore, be suitable for industrially large-scale application.
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 water-borne coatings environmental protection thickening thixotropic agent, is characterized in that, comprise the steps:
Step one, mixes attapulgite clay, sepiolite, the airing of wilkinite raw ore, uses crusher coarse crushing to moisture weight content≤20%, obtains particle pre-mix, adds lithium hydroxide, fully mix, and obtains granular mixture;
Step 2, sprays water to described granular mixture, and coupling is squeezed into flaky mixture to roller and three-roller;
Step 3, covers film by described flaky mixture, stacks more than 15 days, flaky mixture after airing and water, to moisture weight content≤20%, are then put into stainless steel troughing and are pulled an oar, mulser high speed shear by airing, high pressure homogenizer process, obtains emulsion;
Step 4, by described emulsion by vibratory screening apparatus removal of impurities, centrifuge dewatering, obtains biscuit;
Step 5, by described biscuit airing to moisture weight content 10 ~ 15%, then broken, abrasive dust, obtains mineral based waterborne coatings thickening thixotropic agent.
2. the production method of a kind of water-borne coatings environmental protection thickening thixotropic agent as claimed in claim 1, is characterized in that, in step one, the attapulgite clay after airing, sepiolite, wilkinite raw ore mix according to weight ratio 3 ︰ 1 ︰ 1.
3. the production method of a kind of water-borne coatings environmental protection thickening thixotropic agent as claimed in claim 1, is characterized in that, in step one, the particle diameter of described particle pre-mix is 3 ± 1mm.
4. the production method of a kind of water-borne coatings environmental protection thickening thixotropic agent as claimed in claim 1, it is characterized in that, in step one, the weight of described lithium hydroxide is equivalent to 2% of the weight of described particle pre-mix.
5. the production method of a kind of water-borne coatings environmental protection thickening thixotropic agent as claimed in claim 1, is characterized in that, in step 2, is 43 ± 2% to described granular mixture water spray to moisture weight content.
6. the production method of a kind of water-borne coatings environmental protection thickening thixotropic agent as claimed in claim 1, is characterized in that, in step 2, and the spacing Wei≤2mm of described three-roller.
7. the production method of a kind of water-borne coatings environmental protection thickening thixotropic agent as claimed in claim 1, is characterized in that, in step 3, during making beating, the flaky mixture after described airing and the weight ratio of water are 1 ︰ 10.
8. the production method of a kind of water-borne coatings environmental protection thickening thixotropic agent as claimed in claim 1, is characterized in that, in step 3, the time of mulser high speed shear is 2 hours.
9. the production method of a kind of water-borne coatings environmental protection thickening thixotropic agent as claimed in claim 1, is characterized in that, in step 3, the pressure of described high pressure homogenizer is 90MPa.
10. the production method of a kind of water-borne coatings environmental protection thickening thixotropic agent as claimed in claim 1, is characterized in that,
In step 4, described vibratory screening apparatus is 200 orders.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105566987A (en) * | 2016-01-18 | 2016-05-11 | 明光市飞洲新材料有限公司 | Nano-crystal-whisker sink-preventing thickening agent for water-based paint and preparing method thereof |
| CN105985668A (en) * | 2016-01-18 | 2016-10-05 | 明光市飞洲新材料有限公司 | Nanowhisker leveling thickener for paint and preparation method thereof |
| CN107090206A (en) * | 2017-05-04 | 2017-08-25 | 明光市飞洲新材料有限公司 | A kind of manufacture method of cast paint special-purpose suspension thixotropic agent |
| CN114574046A (en) * | 2022-01-30 | 2022-06-03 | 漳州三德利油漆涂料有限公司 | Novel biological sound-insulation diatom interior wall coating and preparation method thereof |
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| CN102923985A (en) * | 2012-11-30 | 2013-02-13 | 吉林大学 | Method using lithium bentonite as cement product additive |
| CN103012850A (en) * | 2012-12-25 | 2013-04-03 | 河北工业大学 | One-step process for preparing surface organic modified nanometer mineral fiber |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102923985A (en) * | 2012-11-30 | 2013-02-13 | 吉林大学 | Method using lithium bentonite as cement product additive |
| CN103012850A (en) * | 2012-12-25 | 2013-04-03 | 河北工业大学 | One-step process for preparing surface organic modified nanometer mineral fiber |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105566987A (en) * | 2016-01-18 | 2016-05-11 | 明光市飞洲新材料有限公司 | Nano-crystal-whisker sink-preventing thickening agent for water-based paint and preparing method thereof |
| CN105985668A (en) * | 2016-01-18 | 2016-10-05 | 明光市飞洲新材料有限公司 | Nanowhisker leveling thickener for paint and preparation method thereof |
| CN107090206A (en) * | 2017-05-04 | 2017-08-25 | 明光市飞洲新材料有限公司 | A kind of manufacture method of cast paint special-purpose suspension thixotropic agent |
| CN114574046A (en) * | 2022-01-30 | 2022-06-03 | 漳州三德利油漆涂料有限公司 | Novel biological sound-insulation diatom interior wall coating and preparation method thereof |
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Application publication date: 20150826 |