CN106147473A - A kind of production method of polyaniline/attapulgite nano-electric conducting coating - Google Patents
A kind of production method of polyaniline/attapulgite nano-electric conducting coating Download PDFInfo
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- CN106147473A CN106147473A CN201510160972.1A CN201510160972A CN106147473A CN 106147473 A CN106147473 A CN 106147473A CN 201510160972 A CN201510160972 A CN 201510160972A CN 106147473 A CN106147473 A CN 106147473A
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Abstract
The invention discloses the production method of a kind of polyaniline/attapulgite nano-electric conducting coating, its technical scheme is characterized by, and the dispensing of water-based attapulgite conductive paint is stirred mixing, for mixture after being uniformly mixed；Input sand mill is ground into semi-finished product, semi-finished product carrying out vacuum degassing process process, the canned finished product for water-based attapulgite conductive paint.Water-based attapulgite conductive paint is made up of lip lipstick attapulgite clay, pure-acrylic emulsion, polyaniline/attapulgite nano-electric conducting composite material, Polyethylene Glycol, propandiol butyl ether, ethylene glycol, polypropylene glycerol aether and deionized water.Lip lipstick attapulgite clay, polyaniline/attapulgite nano-electric conducting composite material and the pure-acrylic emulsion that the present invention selects, there is good adhesive force, excellent physical and mechanical properties, preferable corrosion resistance, excellent mechanical property and mechanical performance, still can play superior electric conductivity in the case of content is relatively low, the present invention is applicable to produce water-based attapulgite conductive paint.
Description
Technical field
The present invention relates to coating, be specifically related to the production method of a kind of polyaniline/attapulgite nano-electric conducting coating.
Background technology
Electrically-conducting paint has elimination electrostatic and capability of electromagnetic shielding, is made up of film forming matter, conductive filler, solvent and auxiliary agent.Conductive filler used by electrically-conducting paint is usually metal powder and carbon dust, metal powder is expensive, ratio dispersion great, difficult, and the coating color that carbon dust prepares is black, has a strong impact on application attractive in appearance, therefore, in the urgent need to a kind of good conductivity of exploitation and light-colored conductive filler.
Preparation method is simple and conductivity excellence owing to having for polyaniline, is considered most to be hopeful substituted metal powder and the conducting polymer composite of carbon dust filler.But, at present with pure polyaniline as conductive filler, the application in coating there is problems in that 1, bad dispersibility, easily reunites, and easily produces flocculation after placement, thus causes that coating surface is coarse, diffusion flow levelling is poor, it is difficult to formation conductive network；2, the preferable conductive coating of electric conductivity to be formed, it is necessary to add substantial amounts of layer/polyaniline conductive filler, its direct result be relatively costly, coating is thicker, poor adhesive force, it is difficult to realize industrial applications.
Chinese patent Authorization Notice No. CN 100363450, authorized announcement date is on January 23rd, 2008, entitled " a kind of water based conductive coating ", disclose " a kind of water based conductive coating; in proportion argentum powder is joined containing in the mixture that anion polyurethane is the aqueous dispersion of main body, deionized water, cosolvent, wetting agent, film former, suspending agent in room temperature strong agitation 30～60 minutes; be subsequently adding thickening agent, be further continued for stirring 60 minutes, prepare water based conductive coating.Baking temperature and time: 20～30 minutes/50～80 DEG C, the specific insulation of film forming coatings is 3 × 10 ↑ [-5]～1 × 10 ↑ [-3] Ω .cm, sheet resistance≤0.2 Ω, adhesive force 0 grade, adhesion force is qualified, shielding properties >=70dB (30MHz～1.5GHz).”
The weak point of above-mentioned patent is to be proportionally added into 30～70 mass % argentum powder in this technology, and its price costly, is unfavorable for popularization and application.
Summary of the invention
It is an object of the invention to overcome weak point in prior art, it is provided that a kind of dispersibility is preferable, the production method of the water-based attapulgite conductive paint of stable conductivity.
The production method of water-based attapulgite conductive paint: the dispensing of water-based attapulgite conductive paint is stirred mixing, for mixture after being uniformly mixed；Input sand mill is ground into semi-finished product, semi-finished product carrying out vacuum degassing process process, the canned finished product for water-based attapulgite conductive paint.
Water-based attapulgite conductive paint is made up of lip lipstick attapulgite clay, pure-acrylic emulsion, polyaniline/attapulgite nano-electric conducting composite material, Polyethylene Glycol, propandiol butyl ether, ethylene glycol, polypropylene glycerol aether and deionized water.
Attapulgite clay is a kind of nanometer porous fibrous silicate clay mineral of the magnesium Han Shuifu County, and when more than attapulgite content >=80% in attapulgite clay, its specific surface area is relatively big, up to 500m2/ more than g.Use " wet beneficiation craft of attapulgite " and " Concare convex rod ore pul making production technology ", the mineral screenings such as the hydromica in attapulgite clay, quartz, opal and carbonate are got rid of, obtain a kind of attapulgite sludge slurry；Lip lipstick attapulgite clay after sodium process and acidification, it is a kind of thixotropy and the special good natural magnesium aluminium silicate gel of gumminess, pH value is neutrality, and the viscosity of attapulgite clay, expansion capacity, colloid index, whiteness, specific surface area, absorption property and suspensibility are obtained for bigger raising.
Attapulgite clay soil property is fine and smooth, smooth surface, and quality is relatively light, and tacky and plasticity time moist, its viscosity can reach more than 3000mPa s, beneficially the bonding between raw material；Attapulgite clay drying shrinkage is little, and do not produce be full of cracks, lip lipstick attapulgite clay adds in the solution of water-based attapulgite conductive paint, stable not stratified gelinite is quickly formed under external force stirs, there are preferable viscosity and thixotropy, the adhesive force of conductive coating can be strengthened, improve electric conductivity and keep preferable physical and mechanical properties.
Polyaniline/attapulgite nano-electric conducting composite material is the blackish green powder body that a kind of electric conductivity is excellent, in deionized water, add attapulgite raw material make slurry, under conditions of being stirred continuously, aniline is added in slurry, add mineral acid, oxidizing agent solution carries out oxidation polymerization, prepares the polyaniline/attapulgite nano-electric conducting composite material of mineral acid doping；Again the polyaniline/attapulgite nano-electric conducting composite material of mineral acid doping is carried out removing impurities, then sucking filtration, and to be washed with deionized water to filtrate be colourless neutrality, obtain polyaniline in eigenstate/attapulgite clay nano composite material；Again it is dispersed in water formation slurry, in slurry, then adds organic acid adulterate again；Carry out sucking filtration again, and be washed with deionized water the organic acid dissociated, be placed at 40～80 DEG C and be dried, be finally grinding to obtain blackish green powder body.
Pure-acrylic emulsion is polynary poly-by multiple acrylic acid, methacrylic acid, methyl methacrylate, esters of acrylic acid and functional aid, by optimizing the emulsion of technique copolymerization, there is particle diameter thin, high glaze, excellent weatherability, excellent anti-after tack, has wide applicability.
Polyethylene Glycol has good water solublity, intermiscibility, lubricity, moisture retention, dispersibility and cementability.
Propandiol butyl ether is a kind of solvent, is conducive to improving paint film fineness, planarization and the fastness of water-based attapulgite conductive paint, is also a kind of good coupling agent.
Ethylene glycol is a kind of antifreeze.
Polypropylene glycerol aether is a kind of colourless or yellow non-volatile oily liquid antifoam agent, Heat stability is good.
The technical scheme is that:
1, the production method of water-based attapulgite conductive paint: be stirred mixing in 1. the dispensing of water-based attapulgite conductive paint being added agitator, the speed controlling of agitator is 200～800 revs/min, mixing time controls at 10～60 minutes, for the mixture of water-based attapulgite conductive paint after being uniformly mixed；2. being ground the semi-finished product into water-based attapulgite conductive paint in mixture input sand mill step 1. obtained, the speed controlling of sand mill is 1500～3000 revs/min, and grinding control was at 1～4 hour；The semi-finished product of the water-based attapulgite conductive paint 3. step 2. obtained carry out vacuum degassing process process, the canned finished product for water-based attapulgite conductive paint.
The dispensing of described water-based attapulgite conductive paint is made up of following component by weight percentage: lip lipstick attapulgite clay 15～55%, polyaniline/attapulgite nano-electric conducting composite material 8～35%, pure-acrylic emulsion 5～35%, Polyethylene Glycol 0.1～5%, propandiol butyl ether 0.1～5%, ethylene glycol 0.1～5%, polypropylene glycerol aether 0.01～1% and deionized water 1～40%.
The production technology of described lip lipstick attapulgite clay is: (1) selects attapulgite sludge slurry for body material, and attapulgite sludge slurry is made up of following component by weight percentage: attapulgite clay 15～35% and water 65～85%；(2) sodium processes: is transported in blender by attapulgite sludge slurry, is stirred after adding sodium hydroxide, and the attapulgite sludge slurry after stirring is transported in sodium pond ageing 1～7 day；Sodium dispensing is made up of following component by weight percentage: attapulgite sludge slurry 95～99.5% and sodium hydroxide 0.5～5%；(3) acidification: be transported in blender by attapulgite sludge slurry after sodium, be stirred after adding the sulphuric acid that concentration is 98%, the attapulgite sludge slurry after stirring is transported in acidification pool ageing 1～3 day；Acidifying dispensing is made up of following component by weight percentage: attapulgite sludge after sodium slurry 92～99.5% and the sulphuric acid 0.5～8% that concentration is 98%；(4) wash and sieve decontamination: be transported in sedimentation tank by the attapulgite sludge slurry after acidifying, again soak, turn over air pump punching, sieve decontamination, release after precipitation and soak water, and by the slurry transportation after precipitation to end product pool, the mud after precipitation is lip lipstick attapulgite clay；Washing dispensing is made up of following component by weight percentage: attapulgite sludge after acidifying slurry 25～65% and water 35～75%；Lip lipstick attapulgite clay is made up of following component by weight percentage: attapulgite clay 5～40% and water 60～95%.
Above-mentioned production technology is to use by " production technology of lip lipstick attapulgite clay " filed in 25 days Augusts in 2008 of the present inventor, and China Patent Publication No. is: CN101348257, publication date: on January 21st, 2009.
Described Concare convex rod ore pul making production technology is: stir in attapulgite ore deposit input blender, after extruded machine is squeezed into lamellar, stirring in input blender again, extruded machine is squeezed into natural drying after lamellar, the attapulgite ore deposit dried is transported in feed reservoir soak, turn over air pump punching, release after precipitation and soak water, sieve decontamination, in input semi-finished product pond, soaks again, turn over air pump punching, release after precipitation and soak water, and by the slurry transportation after precipitation to end product pool, be attapulgite sludge slurry finished product.
Above-mentioned production technology is to use by " Concare convex rod ore pul making production technology " filed in 6 days January in 2004 of the present inventor, and Chinese patent Authorization Notice No. is: CN1287965C, authorized announcement date: on December 6th, 2006.
Polyaniline/attapulgite nano-electric conducting composite material preparation method, processing step is as follows: in deionized water add attapulgite raw material make slurry；Under conditions of being stirred continuously, adding aniline, add mineral acid in slurry, oxidizing agent solution carries out oxidation polymerization, prepares the polyaniline/attapulgite nano-electric conducting composite material of mineral acid doping；Again the polyaniline/attapulgite nano-electric conducting composite material of mineral acid doping is carried out removing impurities, then sucking filtration, and to be washed with deionized water to filtrate be colourless neutrality, obtain polyaniline in eigenstate/attapulgite clay nano composite material；Again it is dispersed in water formation slurry, in slurry, then adds organic acid adulterate again；Carry out sucking filtration again, and be washed with deionized water the organic acid dissociated, be placed at 40～80 DEG C and be dried, be finally grinding to obtain blackish green powder body.
Above-mentioned production technology is to use by " preparation method of polyaniline/attapulgite nano-electric conducting composite material " filed in the present inventor's December in 2007 27 days, and Chinese patent Authorization Notice No. is: CN100549097C, authorized announcement date: on October 14th, 2009.
The polyaniline/attapulgite nano-electric conducting composite material that the present invention selects, in nano bar-shape structure on its microcosmic, draw ratio is big, and the little and easy dispersion of density, fibrous polyaniline/attapulgite is readily formed conductive network, in the case of content is relatively low, still can play superior electric conductivity, thus greatly reduces cost.
The present invention selects lip lipstick attapulgite clay and pure-acrylic emulsion to be film forming matter, and this makes conductive coating that various grounds all show good adhesive force, excellent physical and mechanical properties, preferable corrosion resistance, excellent mechanical property and mechanical performance.
Although the dispensing of water-based attapulgite conductive paint has had defoamer, but when dispensing is ground in sand mill, still can produce the another typical material of some trace, after vacuum degassing process processes, can ensure that the quality of water-based attapulgite conductive paint finished product.
The surface of conductive coating can directly be brushed, scratch or be sprayed on to water-based attapulgite conductive paint, improves coating quality, reduces the consumption of electrically-conducting paint, has saved cost.
Water-based attapulgite conductive paint can play superior electric conductivity, has elimination electrostatic and capability of electromagnetic shielding.
The production method of water-based attapulgite conductive paint is applicable to produce water-based attapulgite conductive paint.
Below in conjunction with embodiment, the invention will be further described:
Embodiment 1:
1, the production method of water-based attapulgite conductive paint: be stirred mixing in 1. the dispensing of water-based attapulgite conductive paint being added agitator, the speed controlling of agitator is 500～600 revs/min, mixing time controls at 40 minutes, for the mixture of water-based attapulgite conductive paint after being uniformly mixed；2. being ground the semi-finished product into water-based attapulgite conductive paint in mixture input sand mill step 1. obtained, the speed controlling of sand mill is 2500～2800 revs/min, and grinding control was at 3 hours；The semi-finished product of the water-based attapulgite conductive paint 3. step 2. obtained carry out vacuum degassing process process, the canned finished product for water-based attapulgite conductive paint.
The dispensing of described water-based attapulgite conductive paint is made up of following component by weight percentage: lip lipstick attapulgite clay 32%, polyaniline/attapulgite nano-electric conducting composite material 28%, pure-acrylic emulsion 22%, Polyethylene Glycol 1.2%, propandiol butyl ether 0.5%, ethylene glycol 0.26%, polypropylene glycerol aether 0.04% and deionized water 16%.
Claims (1)
1. the production method of a polyaniline/attapulgite nano-electric conducting coating, it is characterized in that, 1. mixing it is stirred in the dispensing of water-based attapulgite conductive paint being added agitator, the speed controlling of agitator is 200～800 revs/min, mixing time controls at 10～60 minutes, for the mixture of water-based attapulgite conductive paint after being uniformly mixed；2. being ground the semi-finished product into water-based attapulgite conductive paint in mixture input sand mill step 1. obtained, the speed controlling of sand mill is 1500～3000 revs/min, and grinding control was at 1～4 hour；The semi-finished product of the water-based attapulgite conductive paint 3. step 2. obtained carry out vacuum degassing process process, the canned finished product for water-based attapulgite conductive paint；
The dispensing of described water-based attapulgite conductive paint is made up of following component by weight percentage: lip lipstick attapulgite clay 15～55%, polyaniline/attapulgite nano-electric conducting composite material 8～35%, pure-acrylic emulsion 5～35%, Polyethylene Glycol 0.1～5%, propandiol butyl ether 0.1～5%, ethylene glycol 0.1～5%, polypropylene glycerol aether 0.01～1% and deionized water 1～40%；
The production technology of described lip lipstick attapulgite clay is: (1) selects attapulgite sludge slurry for body material, and attapulgite sludge slurry is made up of following component by weight percentage: attapulgite clay 15～35% and water 65～85%；(2) sodium processes: is transported in blender by attapulgite sludge slurry, is stirred after adding sodium hydroxide, and the attapulgite sludge slurry after stirring is transported in sodium pond ageing 1～7 day；Sodium dispensing is made up of following component by weight percentage: attapulgite sludge slurry 95～99.5% and sodium hydroxide 0.5～5%；(3) acidification: be transported in blender by attapulgite sludge slurry after sodium, be stirred after adding the sulphuric acid that concentration is 98%, the attapulgite sludge slurry after stirring is transported in acidification pool ageing 1～3 day；Acidifying dispensing is made up of following component by weight percentage: attapulgite sludge after sodium slurry 92～99.5% and the sulphuric acid 0.5～8% that concentration is 98%；(4) wash and sieve decontamination: be transported in sedimentation tank by the attapulgite sludge slurry after acidifying, again soak, turn over air pump punching, sieve decontamination, release after precipitation and soak water, and by the slurry transportation after precipitation to end product pool, the mud after precipitation is lip lipstick attapulgite clay；Washing dispensing is made up of following component by weight percentage: attapulgite sludge after acidifying slurry 25～65% and water 35～75%；Lip lipstick attapulgite clay is made up of following component by weight percentage: attapulgite clay 5～40% and water 60～95%；
Concare convex rod ore pul making production technology is: stir in attapulgite ore deposit input blender, after extruded machine is squeezed into lamellar, and stirring in input blender again, extruded machine is squeezed into natural drying after lamellar, and the attapulgite ore deposit dried is transported in feed reservoir soak, and turns over air pump punching, release after precipitation and soak water, sieve decontamination, in input semi-finished product pond, soaks again, turn over air pump punching, release after precipitation and soak water, and by the slurry transportation after precipitation to end product pool, be attapulgite sludge slurry finished product；
The preparation method of polyaniline/attapulgite nano-electric conducting composite material, processing step is as follows: adds attapulgite raw material in deionized water and makes slurry；Under conditions of being stirred continuously, adding aniline, add mineral acid in slurry, oxidizing agent solution carries out oxidation polymerization, prepares the polyaniline/attapulgite nano-electric conducting composite material of mineral acid doping；Again the polyaniline/attapulgite nano-electric conducting composite material of mineral acid doping is carried out removing impurities, then sucking filtration, and to be washed with deionized water to filtrate be colourless neutrality, obtain polyaniline in eigenstate/attapulgite clay nano composite material；Again it is dispersed in water formation slurry, in slurry, then adds organic acid adulterate again；Carry out sucking filtration again, and be washed with deionized water the organic acid dissociated, be placed at 40～80 DEG C and be dried, be finally grinding to obtain blackish green powder body.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107298937A (en) * | 2017-08-08 | 2017-10-27 | 合肥安力电力工程有限公司 | A kind of capacitor electrically-conducting paint and preparation method |
| WO2018188290A1 (en) * | 2017-04-10 | 2018-10-18 | 曲天骄 | Clay-based composite material and preparation method therefor |
| CN109698040A (en) * | 2019-01-29 | 2019-04-30 | 西安工程大学 | A kind of water-base electron slurry and preparation method thereof |
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2015
- 2015-04-08 CN CN201510160972.1A patent/CN106147473A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018188290A1 (en) * | 2017-04-10 | 2018-10-18 | 曲天骄 | Clay-based composite material and preparation method therefor |
| CN107298937A (en) * | 2017-08-08 | 2017-10-27 | 合肥安力电力工程有限公司 | A kind of capacitor electrically-conducting paint and preparation method |
| CN109698040A (en) * | 2019-01-29 | 2019-04-30 | 西安工程大学 | A kind of water-base electron slurry and preparation method thereof |
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Application publication date: 20161123 |