CN100509969C - Production method of attapulgite gelatin for coating thickener - Google Patents
Production method of attapulgite gelatin for coating thickener Download PDFInfo
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- CN100509969C CN100509969C CNB2006100404509A CN200610040450A CN100509969C CN 100509969 C CN100509969 C CN 100509969C CN B2006100404509 A CNB2006100404509 A CN B2006100404509A CN 200610040450 A CN200610040450 A CN 200610040450A CN 100509969 C CN100509969 C CN 100509969C
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Abstract
This invention discloses a method for producing attapulgite gel used in paint thickening agent, comprising: first, soak the attapulgite ore concentrate with water and additive for 5-7d, wherein the additive MgO is 2-4% of the ore concentrate weight, and the ratio of the ore concentrate and water is 1:9; then roll the mixture at pressure of 50-70 kilogram/cm2 to be wet material with 40-55% water content, soak the wet material for another 2-3 days, and continuously roll 2-3 more times to obtain the finished wet material; second, filtrate the wet material, and dry it at below 120Deg C to obtain the dry material with 8-12% water content; finally, grind the dry material to 500 order to obtain the attapulgite gel. This invented attapulgite thickening agent used in water paint and solvent paint is characterized of high viscosity coefficient and thixotropy index, thorough dispersion, and no agglomeration.
Description
Technical field
The present invention relates to the production method of coating thickener, be specifically related to a kind of production method that is used for the attapulgite gelatin of coating thickener.
Background technology
In each stage of coating preparation, storage, transportation and construction, its rheological all is the important factor that must consider.Have only the appropriate thickener rheology agent of selection just can protect dispersive base-material, pigment; Just can be formed with good thixotropic mastic coatings; Could in storage, transportation, effectively prevent precipitation; Could in construction process, keep to control sagging again in the good levelling.
Coating thickener roughly has 3 classes: natural organic gel such as guar gum chemical industry synthesis of organic substance and mineral colloid.China's thickener rheology agent commonly used is based on the chemical industry synthesis of organic substance, and they are: 1. cellulose ethers, and advantage is that thickening capabilities is strong, resistance to medium is good, but levelling property is poor, the price height; 2. acrylic acid or the like, advantage is that thickening effectiveness is good, and biologically stable is good, and the gloss influence is little, but pH value is restricted, and the coating flocculation appears in improper use easily; 3. polyurethanes, advantage is that levelling property, water tolerance are better, but a little less than the thickening capabilities; In addition, the environment friendliness of these organic thickening agents is general bad or good inadequately, therefore from environmental angle development inorganic thickening agent be trend institute to.
Domestic main inorganic thickening agent is to be the product of raw material production with the wilkinite at present, by to the purification of high quality natural montmorillonite, sodium and organically-modified forming, be used for solvent based coating, about the general RMB1200 of price unit/ton, have the inorganic thickening agent of research report to have in addition: modification rectorite leng, natural sepiolite, synthetic hectorite, silicon dioxide colloid etc., but all do not become the product that certain scale is arranged.
Inorganic thickening agent has good physicochemical performance, and compliance with environmental protection requirements particularly is along with society believes that to the raising of environmental requirement the inorganic thickening of a large amount of uses will be the direction of coating development.And attapulgite thickening agent will be one of its principal item.At present, China's attapulgite clay product is mainly used in food oils and fields such as petrochemical industry discoloring agent, fodder additives, molecular sieve desiccant, farm chemical carrier, fertilizer binding agent and building materials, primary processed items and low value-added product ratio are higher, cause high quality raw material often to be not used in to produce or can't the mass production expensive goods.Though domestic many attapulgite clay manufacturing enterprise all declares to provide the attapulgite clay as coating thickener, does not see product on the market.Therefore it is significant for increase range of product, expansion attapulgite clay Application Areas with attapulgite thickening agent to develop coating.
The microstructure of attapulgite clay comprises three levels: the one, and the basic structural unit of attapulgite " rod is brilliant ", excellent crystalline substance is needle-like, is about 1-2 μ m, diameter 0.01 μ m, therefore, about the classification of nanoparticle, excellent crystalline substance belongs to monodimension nanometer material according at present; The 2nd, assemble " the brilliant bundle of rod " that forms by the brilliant close parallel of rod, the 3rd, assemble various " aggregates " that form mutually by the brilliant interfascicular of rod.The aggregate depolymerization is complete in attapulgite clay, in water or other solution, disperse thoroughly and when finite concentration is arranged, attapulgite rod crystalline substance is woven into spatial network, structure that system forms similar " random stack of rice straw ", system has high viscosity, under high shear, the rod crystalline substance is progressively complied with shear direction, viscosity reduces greatly and has bigger thixotropy index, this network structure is the synthesis result of physics and chemical action, in sizable pH value scope, has quite stable, therefore, theoretically, it is strong that attapulgite clay has a thickening capabilities, thixotropy index is big, the advantage that the pH value scope is wide, both can prevent as coating thickener that coating was in storage, sedimentation and construction sagging in the transportation, the film forming thickness that can obtain to suit again, improve the once opacifying power of brushing, but it is incomplete to work as the clay agglomerates depolymerization, or when disperseing thoroughly in system, attapulgite still exists with macrobead, for nano particle, they can not form the good network structure, thereby do not have enough viscosity.
From the attapulgite thickening mechanism as can be seen, the key of preparation attapulgite thickening agent has two: one, attapulgite " aggregate ", " the brilliant bundle of rod " depolymerization as far as possible; The 2nd, guarantee that attapulgite thickening agent can be well-dispersed in water or other solvent in use, even the time spent can be fully wetting by solvent, do not occur reuniting.
Summary of the invention
The objective of the invention is to: a kind of production method that is used for the attapulgite gelatin of coating thickener is provided, utilize this production method to produce the thickening material that attapulgite gelatin is used for water-based or solvent based coating, this attapulgite gelatin has good viscosity and thixotropy index, guarantee fully to disperse, do not occur reuniting.
Technical solution of the present invention is: this production method may further comprise the steps: at first, add water and additive and soak attapulgite washed ore 5-7 days, additive MgO is the 2-4% of washed ore weight, and the weight ratio of washed ore and water is 1:9; Then, pressure 50-70 kilograms per centimeter
2Roll the wet feed of moisture content weight 40-55%, wet feed soaked 2-3 days once more, continuous roll for two or three times wet feed; Secondly, wet feed filters, drying, is lower than the siccative that 120 ℃ of temperature dryings get moisture content weight 8-12%; At last, siccative abrasive dust 500 orders get attapulgite gelatin.
Wherein, when the attapulgite raw material is rough, once rolling back increase stirring to pulp is that the wet beneficiation step gets washed ore, wet beneficiation is to add water and dispersion agent stirring in the wet feed, dispersion agent is 0.1%～1.0% of a rough weight, rough and weight ratio water is 1:9, and dispersion agent is tripoly phosphate sodium STPP, sodium phosphate.
Wherein, add properties-correcting agent in immersion or stirring to pulp process, properties-correcting agent is the 12-18 long chain quaternary, and the weight of properties-correcting agent is the 10-30% of rough weight.
Production method of the present invention has the following advantages: 1, roll shearing action and add auxiliary agent by physics and make attapulgite " aggregate " depolymerization;
2, the brilliant fully dispersion in water of clay rod that rolls and pull an oar and make depolymerization is so that by evenly modification;
3, surface modification treatment one makes the further depolymerization of the brilliant bundle of rod; Two reach in the use system and can fully be disperseed by surface modification; Three solvents can be used by modification the time are fully wetting;
4, sex change does not take place in the clay after the dry assurance modification;
5, water-borne coatings and solvent based coating are product innovation with attapulgite thickening agent at home; To enlarge the range of application of domestic attapulgite, increase the consumption of attapulgite, improve the competitive power of China's attapulgite product simultaneously in the world market;
6, the attapulgite gelatin of high viscosity coefficient, thixotropy index not only is used for coating thickener, also can be used for developing other high value added product, as the advanced catalysts carrier.
Description of drawings
Fig. 1 is a Production Flow Chart block diagram of the present invention.
Embodiment
As shown in Figure 1, this production method may further comprise the steps: at first, add water and additive and soak attapulgite washed ore 5-7 days, additive MgO is the 2-4% of washed ore weight, and washed ore is 1:9 with the ratio of water weight; Then, pressure 50-70 kilograms per centimeter
2Roll the wet feed of moisture content weight 40-55%, wet feed soaked 2-3 days once more, continuous roll for two or three times wet feed; Secondly, the wet feed drying is lower than the siccative that 120 ℃ of temperature dryings get moisture content weight 8-12%; At last, siccative abrasive material 500 orders get attapulgite gelatin.
Wherein, when the attapulgite raw material is rough, once rolling back increase stirring to pulp is that the wet beneficiation step gets washed ore, adding water and dispersion agent in the wet beneficiation in the wet feed stirs, dispersion agent is 0.1%～1.0% of a rough weight, rough and weight ratio water is 1:9, and dispersion agent is tripoly phosphate sodium STPP, sodium phosphate.
Wherein, add properties-correcting agent in immersion or stirring to pulp process, properties-correcting agent is the 12-18 long chain quaternary, and the weight of properties-correcting agent is rough 10-30%.
Example 1: at first, select for use attapulgite washed ore 100kg to add water and additive and soaked 5 days, additive MgO 2kg, water are 900kg; Then, pressure 50-70 kilograms per centimeter
2Roll moisture content weight 40% wet feed, wet feed soaked 2-3 days once more, continuous roll for two or three times wet feed; Secondly, 120 ℃ of temperature dryings get the siccative of moisture content weight 8%; At last, siccative abrasive dust 500 orders get attapulgite gelatin.
Wherein, when the attapulgite raw material was rough, once rolling back increase stirring to pulp was that the wet beneficiation step gets washed ore, and the wet method washup is to add water and dispersion agent stirring in the wet feed, and pentasodium triphosphate of dispersing agent weight is 0.1kg, and water weight is 900kg.
Wherein, add properties-correcting agent 12 alkyl trimethyl ammonium chlorides in immersion or stirring to pulp process, the weight of properties-correcting agent is 10kg.
This attapulgite gelatin moisture content :≤12%, PH:8-12, proportion: 2.47,325 mesh screen residues≤0.01%, loose volume weight: 300kg/m
3, dispersion viscosity: 2800mpas.
Example 2: at first, select for use attapulgite washed ore 100kg to add water and additive and soaked 6 days, additive MgO weight 3kg, water is 900kg; Then, pressure 50-70 kilograms per centimeter
2Roll moisture content weight 50% wet feed, wet feed soaked 2-3 days once more, continuous roll for two or three times wet feed; Secondly, 100 ℃ of temperature dryings get the siccative of moisture content weight 10%; At last, siccative abrasive dust 500 orders get attapulgite gelatin.
Wherein, when the attapulgite raw material was rough, once rolling back increase stirring to pulp was that the wet beneficiation step gets washed ore, and wet beneficiation is to add water and dispersion agent stirring, dispersion agent sodium phosphate weight 0.5kg, water 900kg in the wet feed.
Wherein, add properties-correcting agent 16 alkyl trimethyl ammonium chlorides in immersion or stirring to pulp process, the weight of properties-correcting agent is 15kg.
This attapulgite gelatin moisture content :≤12%, PH:8-12, proportion: 2.47,325 mesh screen residues≤0.01%, loose volume weight: 300kg/m
3, dispersion viscosity: 2800mpas.
Example 3: at first, suitable attapulgite washed ore 100kg adds water and additive soaked 7 days, additive MgO weight 4kg, and water is 900kg; Then, pressure 50-70 kilograms per centimeter
2Roll moisture content weight 55% wet feed, wet feed soaked 2-3 days once more, continuous roll for two or three times wet feed; Secondly, wet feed filters, and 80 ℃ of temperature dryings get the siccative of moisture content weight 8%; At last, siccative abrasive dust 500 orders get attapulgite gelatin.
Wherein, when the attapulgite raw material was rough, rolling back increase stirring to pulp was that the wet beneficiation step gets washed ore, and wet beneficiation is to add water and dispersion agent in the wet feed, the 1.0kg of dispersion agent phosphoric acid salt weight, water 900kg.
Wherein, add properties-correcting agent 18 alkyl trimethyl ammonium chlorides in immersion or stirring to pulp process, the weight of properties-correcting agent is 30kg.
This attapulgite gelatin moisture content :≤12%, PH:8-12, proportion: 2.47,325 mesh screen residues≤0.01%, loose volume weight: 300kg/m
3, dispersion viscosity: 2800mpas.
Claims (1)
1. production method that is used for the attapulgite gelatin of coating thickener is characterized in that: at first, add water and additive and soak attapulgite washed ore 5-7 days, additive MgO is the 2-4% of washed ore weight, and the weight ratio of washed ore and water is 1:9; Then, pressure 50-70 kilograms per centimeter
2Roll moisture content weight 40-55% wet feed, wet feed soaked 2-3 days once more, continuous roll for two or three times wet feed; Secondly, be lower than the siccative that 120 ℃ of temperature dryings get moisture content weight 8-12%; At last, siccative abrasive dust 500 orders get attapulgite gelatin; Wherein, when the attapulgite raw material is rough, rolling back increase stirring to pulp is that the wet beneficiation step gets washed ore, wet beneficiation is to add water and dispersion agent stirring in the wet feed, dispersion agent is 0.1%～1.0% of a rough weight, rough and weight ratio water is 1:9, and dispersion agent is tripoly phosphate sodium STPP, sodium phosphate; Wherein, add properties-correcting agent in immersion or stirring to pulp process, properties-correcting agent is the 12-18 long chain quaternary, and the weight of properties-correcting agent is the 10-30% of rough weight.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101585211B (en) * | 2009-03-27 | 2010-10-27 | 许盛英 | Method for producing attapulgite paste interior wall coating |
| CN104478238B (en) * | 2014-12-17 | 2016-08-24 | 苏州中材非金属矿工业设计研究院有限公司 | A kind of bentonite-based mineral gel and preparation method thereof |
| CN105062157B (en) * | 2015-08-05 | 2018-05-11 | 合肥万博制漆有限公司 | A kind of concave convex rod lacquer and preparation method thereof |
| CN105086657B (en) * | 2015-08-05 | 2018-05-11 | 合肥万博制漆有限公司 | A kind of concave convex rod metal fluorocarbon coatings and preparation method thereof |
| CN105566992A (en) * | 2016-01-18 | 2016-05-11 | 明光市飞洲新材料有限公司 | Nano-crystal-whisker thixotropy thickening agent for solvent-based coating and preparation method thereof |
| CN108767176B (en) * | 2018-06-01 | 2021-06-22 | 江苏清陶能源科技有限公司 | Stable ceramic slurry for lithium ion battery and preparation method and application thereof |
| CN109065815B (en) * | 2018-08-14 | 2022-03-15 | 宜春清陶能源科技有限公司 | Functional ceramic and attapulgite characteristic combined coating diaphragm and preparation process thereof |
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Non-Patent Citations (2)
| Title |
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| 凹凸棒石凝胶的研制及其应用试验. 季金华.江苏地质，第24卷第2期. 2000 |
| 凹凸棒石凝胶的研制及其应用试验. 季金华.江苏地质，第24卷第2期. 2000 * |
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