WO2004010439A1 - 導電性薄片状化合物及び導電性組成物 - Google Patents
導電性薄片状化合物及び導電性組成物 Download PDFInfo
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- WO2004010439A1 WO2004010439A1 PCT/JP2003/009010 JP0309010W WO2004010439A1 WO 2004010439 A1 WO2004010439 A1 WO 2004010439A1 JP 0309010 W JP0309010 W JP 0309010W WO 2004010439 A1 WO2004010439 A1 WO 2004010439A1
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- Prior art keywords
- conductive
- compound
- flaky
- titanic acid
- weight
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/06—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances
- H01B1/08—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances oxides
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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
- C08K9/00—Use of pretreated ingredients
- C08K9/02—Ingredients treated with inorganic substances
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
- Y10T428/2991—Coated
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
- Y10T428/2991—Coated
- Y10T428/2993—Silicic or refractory material containing [e.g., tungsten oxide, glass, cement, etc.]
Definitions
- the present invention relates to a conductive flaky compound and a conductive composition.
- bumpers Ya de acai Domoru the various exterior port B q of the door mirror or the like, polyolefins, made of Polyamide, various synthetic resins such as styrene resin used Have been. More recently, passenger cars equipped with synthetic resin doors have been sold.
- Automotive exterior parts made of synthetic resin are usually painted in the same color as the automobile body.
- resin exterior parts in consideration of the fact that synthetic resin is an insulator, a conductive primer layer consisting of a matrix resin and a conductive material is formed on the surface, and then a paint film is applied by electrostatic coating.
- a method of forming a layer is general. In such an electrostatic coating method, it is important to reduce the thickness of the conductive primer layer and the coating layer in order to meet the demand for reducing the amount of exhaust gas accompanying global warming and to further reduce fuel consumption. It has become one of.
- the conductive primer layer while maintaining the front surface resistance of 1 0 about 4 to 1 0 8 Omega required to form a uniform and beautiful coating layer, a thin film to a thickness 1 ⁇ 1 ⁇ ⁇ ⁇ about It is hoped that this will happen.
- Examples of the conductive material contained in the conductive primer layer include powdered conductive materials such as carbon black, graphite, and metal powder, carbon fiber, and carburized surface. Many are known, such as fibrous conductive materials such as titanic acid-coated rim fibers and titanium oxide fibers coated with carbonaceous materials such as bon black, and flaky conductive materials such as nickel-coated myric and metal flakes. Japanese Unexamined Patent Publication No. 57-806806, Japanese Unexamined Patent Application Publication No. 58-76266, Japanese Unexamined Patent Application Publication No. 61-218639, Japanese Unexamined Patent Application Publication No. — 194071 publication, JP-A-10-309513, JP-2001-98092 publication, etc.).
- a flaky conductive material in which a first conductive layer made of tin oxide and antimony oxide and a second conductive layer made of tin oxide are sequentially formed on the surface of a base material is known.
- a flaky conductive material such as iron, talc, glass flake, alumina flake, titania flake (titanium oxide flake) or the like can be selected as a base material.
- these flaky conductive materials are somewhat colored, adding them to the primer layer of a light-colored coating layer such as beige, white, or light blue will impair the color of the coating layer.
- An object of the present invention is to provide a conductive flaky compound capable of imparting good conductivity even with a thin thickness of about 1 to 10 Xm, and a conductive composition in which the compound is mixed with a binder. It is in.
- Conductive flake compound of the present invention have an average major axis is. 1 to 1 00 / im, the average is Thickness is 0. 0 1 ⁇ 1. 5 ⁇ m, and potassium oxide '(K 2 0) in terms of 0. 3 on the surface of the titanium oxide containing potassium 5 weight 0/0, the first conductive layer is formed consisting of tin oxide containing antimony, yet the second conductive consisting of tin oxide on the first conductive layer It is characterized in that a layer is formed.
- the average major axis and the average thickness can be observed and measured with a scanning electron microscope (SE () or a transmission electron microscope ( ⁇ ). The average major axis can be approximately measured by a laser diffraction particle size distribution analyzer.
- an inorganic compound having a shape such as a flaky shape, a flaky shape, or a plate shape has a rectangular or polygonal irregular shape, It has various particle sizes depending on the location to be measured.
- the long diameter in the present invention means the longest diameter among such particle diameters.
- the first conductive layer a 0.1 to 50 wt% of antimony component in antimony oxide (S b 2 ⁇ 3) in terms of relative tin component 1 00 parts by weight of tin oxide (S n0 2) in terms It is preferable that it is contained.
- the conductive flaky compound of the present invention is obtained by using a stannic compound on a surface of a flaky titanic acid obtained by causing a basic compound having an interlayer swelling action to act on the layered titanic acid and peeling off the interlayer. Forming a first conductive layer, forming a second conductive layer using a tin-tin compound, and then performing a heat treatment. You can do it.
- the conductive composition of the present invention is characterized in that the conductive flaky compound of the present invention is mixed with a binder.
- the compounding amount of the conductive flaky compound is preferably 5 to 50 parts by weight with respect to 100 parts by weight of the binder.
- binder examples include one or more selected from a thermoplastic resin, a thermosetting resin, an inorganic binder, and a metal-containing organic compound.
- the conductive flaky compound of the present invention has, as a substrate, an average major axis of 1 to 100 ⁇ m, preferably 1 to 10 ⁇ m, and an average thickness of 0.01 to 1.5 ⁇ m.
- the flaky titanic acid is preferably 0.01 to 1.0 jum, and contains 0.3 to 5% by weight of potassium in terms of potassium oxide (K 2 ⁇ ) (hereinafter simply referred to as “ Flaky titanic acid ”).
- M represents a monovalent to trivalent metal.
- the mouth indicates the defect site of Ti.
- X indicates a positive real number satisfying 0 ⁇ X ⁇ 1.0.
- y and z each represent 0 or a positive real number satisfying y + z ⁇ 1.0.
- the layered titanate (1) represented by the formula (1) is treated with an acid to obtain a layered titanic acid in which 75 to 9.9% of K and / or M ion has been replaced by hydrogen ions or hydronium ions. It can be obtained by allowing a basic compound having an interlayer swelling action to act on the layered titanic acid and separating the layers.
- M in the general formula (1) is a metal having a valence of 1 to 3 other than K, and is preferably selected from Li, Mg, Zn, Cu, Fe, Al, Ga, Mn, and Ni. At least one selected.
- the layered titanate (1) can be produced, for example, by a method disclosed in a known document such as Japanese Patent No. 3062497. Specifically, potassium oxide or a potassium compound which becomes an oxide by heating, an oxide of metal M or a compound of metal M which becomes an oxide by heating, and an oxide of Ti or Ti which becomes an oxide by heating Using a compound as a raw material, this raw material is mixed with one or more types of fluxes selected from halides or sulfates of alkali metals or alkaline earth metals, and the weight ratio of the flux raw materials is 0.1 to 2.0. The mixture may be heated and fired at 700 to 1200 ° C.
- the acid treatment of the layered titanate (1) is performed according to a known method, for example, by adding an acid to the aqueous slurry of the layered titanate (1), preferably with stirring.
- concentration of the layered titanate (1) is not particularly limited, and can be appropriately selected from a wide range according to the type of the layered titanate (1). 70 to 99% of the potassium ion and / or the M ion Considering the efficient replacement of hydrogen with a hydrogen ion or a hydronium ion, it is usually 0.01 to 10% by weight, preferably 0.1 to 5% by weight. It should be / 0 .
- the acid is not particularly limited, and any known acid can be used.
- Examples thereof include mineral acids such as hydrochloric acid, sulfuric acid, and nitric acid, and organic acids such as formic acid, acetic acid, propionic acid, and oxalic acid. Of these, inorganic acids are preferred, and hydrochloric acid is particularly preferred.
- One type of acid can be used alone, or two or more types can be used in combination as needed.
- the acid is usually used in the form of an aqueous solution.
- the acid concentration in the aqueous solution is not particularly limited and can be appropriately selected from a wide range depending on the kind of the acid and the like, and 70 to 99% of K ions and Z or M ions are hydrogen ions or hydrogen ions.
- a basic compound having an interlayer swelling action is acted on the layered titanic acid (la) to peel off the interlayer, thereby obtaining flaky titanic acid. More specifically, for example, a basic compound having an interlayer swelling action is added to an aqueous slurry of layered titanic acid (la) and stirred.
- the concentration of the layered titanic acid (la) in the aqueous slurry is not particularly limited, and may be appropriately selected from a wide range according to the type of the layered titanic acid (la) and the basic compound, reaction conditions, and the like.
- Examples of the basic compound having an interlayer swelling action include alkylamines such as methylamine, ethylamine, n-propylamine, getylamine, triethylamine, butynoleamine, pentylamine, hexylamine, octyl / reamine, dodecylamine, salts thereof, and ethanolamine.
- alkylamines such as methylamine, ethylamine, n-propylamine, getylamine, triethylamine, butynoleamine, pentylamine, hexylamine, octyl / reamine, dodecylamine, salts thereof, and ethanolamine.
- Alethanolamines such as diethanolamine, triethanolamine, isopropanolamine, diisopropanolamine, triisopropanolamine, 2-amino-12-methyl-11-propanol, tetramethylammonium hydroxide, Quaternary ammonium hydroxides such as tetraethylammonium hydroxide, tetrapropylammonium hydroxide, tetrabutylammonium hydroxide and the like, and salts thereof, cetyltrimethylammonium salt, steer And quaternary ammonium salts such as riltrimethylammonium salt, benzyltrimethylammonium salt, dimethyldistearylamine salt and dimethylstearylbenzylammonium salt.
- One basic compound can be used alone, or two or more basic compounds can be used in combination.
- the amount of the basic compound added is preferably 5 to 40 equivalent% of the total equivalent of the layered titanic acid (la). As a result, the flaky titanic acid with an average thickness of 0.01 to 1.5 ⁇ m was peeled off. Can be released.
- flaky titanic acid having the same particle size distribution as the raw layered titanate is obtained, and the obtained flaky titanic acid is prevented from being finely ground. It is preferable not to apply strong shearing force to the steel.
- the flaky titanic acid thus obtained is obtained by laminating tens to hundreds of layers, and has an average major axis of usually 1 to 100 m, preferably 1 to 10 / m and an average thickness of usually 1 to 100 m.
- 0.0 1 to 1.5 111 preferably is 0. 01-1 m, which includes a force Riu beam of from 0.3 to 5 weight 0/0 potassium oxide (K 2 0) conversion.
- the potassium content is less than 0.3% by weight, it is difficult for the flaky titanic acid to maintain a predetermined shape, and coloring may occur when the flaky titanic acid is mixed with a resin to form a thin film. Not preferred. Also, when the potassium content is more than 5% by weight, the conductivity of the intended conductive flaky compound is lowered, and a desired conductivity value may not be obtained.
- the method for coating the flaky titanic acid with the first and second conductive layers can be, for example, according to the method described in Japanese Patent Application Laid-Open No. H10-147891.
- flaky titanic acid is dispersed in water, and a stannic compound and an antimony compound are added and mixed while adding an alkali agent to keep ⁇ ⁇ in the system normally at 2 to 5 (first step).
- a stannous compound is added and mixed while maintaining the ⁇ in the system at 2 to 5 by adding an alkali agent (second step), and a solid substance is separated from the mixture.
- the concentration of the flaky titanic acid in the aqueous dispersion is not particularly limited, and an amount in which the reaction in the first step proceeds smoothly and the reaction operation is easy may be appropriately selected.
- the stannic compound used in the first step is preferably a tetravalent tin compound, and specific examples thereof include stannic chloride, stannic sulfate, and stannic nitrate. .
- the antimony compound is a trivalent antimony compound, and may be a compound of various forms such as chloride, sulfate, nitrate, etc., but chloride (antimony trichloride) is generally easily available.
- One antimony compound can be used alone, or two or more antimony compounds can be used in combination as needed.
- the amounts of the stannic compound and the antimony compound are not particularly limited, and can be appropriately selected from a wide range according to the desired conductive performance, use, etc.
- the amount of the flaky titanic acid is 100 parts by weight. these total amount (as oxide, 3 11 0 2 ⁇ Pi 3 13 2 0 3) as 3 parts by weight or more, preferably if 5-2 0 parts by weight.
- the ratio of the stannic compound to the antimony compound is not particularly limited, and can be appropriately selected from a wide range according to various conditions such as the conductive performance and application of the flaky conductive compound to be obtained.
- the antimony compound may be used in an amount of usually 0.1 to 50 parts by weight, preferably 1 to 30 parts by weight, based on 100 parts by weight of the stannic compound.
- the stannic compound and antimony compound are preferably used in the form of an aqueous solution.
- the concentration of each compound in the aqueous solution is not particularly limited, and a concentration at which the reaction proceeds smoothly may be appropriately selected. Both are preferably used in a mixture.
- alkali agents can be used, for example, alkali metal hydroxides such as sodium hydroxide and potassium hydroxide, alkali metal carbonates such as sodium carbonate and potassium carbonate, ammonium carbonate, and the like.
- alkali metal hydroxides such as sodium hydroxide and potassium hydroxide
- alkali metal carbonates such as sodium carbonate and potassium carbonate, ammonium carbonate, and the like.
- One type of alcoholic agent can be used alone, or two or more types can be used in combination as needed.
- the alkaline agent is preferably used in the form of an aqueous solution. The amount of the alkali agent used may be appropriately selected so that the pH in the system is 2 to 5.
- an aqueous solution of an alcoholic agent is added dropwise to an aqueous dispersion of flaky titanic acid with stirring, and the pH of the system is usually maintained at 1 to 5 while the stannic compound and antimony are maintained.
- the reaction is performed by dropping an aqueous solution containing the compound.
- This reaction can be carried out at room temperature, but is preferably carried out under heating at 50 to 80 ° C. This reaction may be completed at the same time as the completion of the dropwise addition, but it is preferable to leave the mixture under stirring for about 0.5 to 5 hours after the completion of the dropwise addition.
- a stannic hydroxide and an antimony hydroxide are generated in the system, and these are deposited on the surface of the flaky titanic acid to form a first deposited layer.
- the second step can be carried out in the same manner as the first step except that a stannous compound is used instead of the stannic compound and the antimony compound.
- a stannous compound is used instead of the stannic compound and the antimony compound.
- an aqueous solution of an alkali agent is added dropwise to an aqueous dispersion of flaky titanic acid having a first sedimentary layer formed on the surface obtained in the first step with stirring to adjust the pH in the system to 2 It is carried out by adding a stannous compound while keeping the value at ⁇ 5.
- the stannous compound is a divalent tin compound, and specific examples thereof include stannous chloride, stannous sulfate, stannous nitrate, and the like.
- stannous chloride stannous sulfate
- stannous nitrate stannous nitrate
- One type of stannous compound can be used alone, or two or more types can be used in combination.
- the amount of stannous compound used is not particularly limited.
- the conductive flaky compound to be obtained From a wide range according to various conditions such as the use of the conductive flaky compound to be obtained, the amount of the first deposited layer deposited, and the ratio of stannic hydroxide to antimony hydroxide in the deposited layer.
- it is usually 3 parts by weight or more, preferably 5 to 20 parts by weight, based on 100 parts by weight of flaky titanic acid as a core material.
- the stannous compound is usually used in the form of an aqueous solution. In aqueous solution The concentration of the stannous compound is not particularly limited, and the concentration at which the reaction proceeds smoothly may be appropriately selected according to various reaction conditions.
- the second step can be carried out at room temperature as in the first step, but is preferably carried out at a heating temperature of 50 to 80 ° C.
- This reaction may be completed at the same time as the completion of the dropping, but it is preferable to leave the mixture under stirring for about 0.5 to 5 hours after the completion of the dropping. This produces stannous hydroxide in the system which deposits on the first stack of flaky titanic acid.
- Drying of the solid is usually carried out at a temperature of 50 to 200 ° C, preferably 90 to 120 ° C, usually for 1 to 30 hours, preferably 10 to 20 hours. Ends with.
- Heating of the solid after drying is carried out at a temperature of usually 200 to 100 ° C., preferably 300 to 600 ° C., and is usually 30 minutes to 5 hours, preferably 1 minute. Ends in ⁇ 3 hours.
- the portion of titanic acid as the core material is converted into titanium dioxide, and further, stannous hydroxide, stannic hydroxide and antimony hydroxide are converted into oxides.
- the conductive flaky compound of the present invention obtained in this way has a first layer made of tin oxide containing antimony formed on the surface of the flaky titanium oxide as a base material, and an oxidized layer formed on the first layer.
- This is a conductive material on which a second layer made of tin is formed.
- the tin oxide present in the first layer and the second layer is in the form of a mixture of stannous oxide and stannic oxide. Excellent conductive performance can be provided.
- both the first layer and the second layer may be made of stannous oxide or stannic oxide.
- the thickness of the first layer is not particularly limited, but is usually 5 to 20 nm.
- the thickness of the second layer is usually 5 to 20 nm.
- known surface treatment and surface coating may be performed. If necessary, a dispersion stabilizer may be added to the flaky titanic acid suspension.
- the conductive composition of the present invention contains a binder and the above-mentioned conductive flaky compound.
- the mixing ratio of each component is not particularly limited, and the kind of the binder, the use of the composition to be obtained, etc. Can be selected from a wide range according to the composition, but in consideration of the conductivity, mechanical strength, moldability, film forming property for thinning, etc. of the obtained composition, it is usually 100 parts by weight of the binder.
- the conductive flaky compound may be used in an amount of 5 to 200 parts by weight, preferably 10 to 50 parts by weight.
- the binder is not particularly limited, and any known matrix material capable of dispersing the conductive flaky compound can be used. Among them, thermoplastic resins, thermosetting resins, inorganic binders, and metal-containing organic compounds Etc. can be preferably used.
- One kind of the binder can be used alone, or two or more kinds can be used in combination as needed.
- thermoplastic resin examples include polyethylene, polypropylene, polyisoprene, chlorinated polyethylene, polyvinyl chloride, polyptogen, polystyrene, impact-resistant polystyrene, acrylonitrile-styrene resin (AS resin), acrylonitrile-one Butadiene-styrene resin (ABS resin), Methyl methacrylate-butadiene-styrene resin Moonlight (MBS resin), Methyl methacrylate-acrylonitrile-butadiene-styrene resin (MABS resin), Acrylonitrile-acrylyl-styrene resin (AAS resin) ), Acrylic resin, polyester (polyethylene terephthalate, polybutylene terephthalate, polyethylene Naphthalate, etc.), polycarbonate, polyphenylene ether, modified polyphenylene ether, aliphatic polyamide, aromatic polyamide, polyphenylene sulfide, polyimide, polyimide
- thermosetting resin examples include, for example, polyurethane, phenolic resin, melamine resin, urea resin, unsaturated polyester resin, diaryl phthalate resin, silicon resin, epoxy resin (bisphenol A type epoxy resin, bis Phenol F epoxy resin, phenol nopolak epoxy resin, cresol nopolak epoxy resin, cycloaliphatic epoxy resin, glycidyl ester epoxy resin, glycidylamine epoxy resin, heterocyclic epoxy resin, urethane modified Epoxy resin, brominated bisphenol A-type epoxy resin, etc.).
- the thermosetting resins can be used alone or as a mixture of two or more as needed.
- the inorganic binder include, for example, one or a mixture of two or more inorganic curable substances such as silicates, phosphates, and borates, and precursors and hydrated substances thereof. Examples thereof include those which are cured by heat, light, electron beam, catalyst or the like to form an insoluble, infusible or plastic binder.
- One kind of the inorganic binder can be used alone, or two or more kinds can be used as a mixture as needed.
- metal-containing organic compounds include, for example, organic silicon compounds, organic Titanium compounds, organic phosphorus compounds, organic boron compounds and the like can be mentioned.
- One kind of the metal-containing organic compound can be used alone, or two or more kinds can be used as a mixture as needed.
- thermoplastic resin or a thermosetting resin can be preferably used, and a thermoplastic resin can be particularly preferably used.
- the conductive composition of the present invention includes conductive materials other than the conductive flaky compound of the present invention, particularly flaky (or plate-like or scale-like), fibrous, and granular as long as the preferable properties are not impaired.
- conductive materials other than the conductive flaky compound of the present invention particularly flaky (or plate-like or scale-like), fibrous, and granular as long as the preferable properties are not impaired.
- a light stabilizer, a light-blocking agent, a metal deactivator, an antioxidant, a plasticizer, an impact strength improver, and a compatibilizer may be contained.
- the conductive composition of the present invention can be produced by mixing and / or kneading a predetermined amount of a binder and a predetermined amount of a conductive flaky compound, and if necessary, an appropriate amount of another additive according to a known method.
- powder, beads, flakes, or pellets are mixed using an extruder such as a single-screw extruder or a twin-screw extruder, a Banbury mixer, a pressure kneader, or a kneader such as a two-roll extruder.
- an extruder such as a single-screw extruder or a twin-screw extruder, a Banbury mixer, a pressure kneader, or a kneader such as a two-roll extruder.
- the composition can be formed into a film, a sheet or any other molded article by a known molding means such as press molding, injection molding, extrusion molding, casting molding and the like.
- a known molding means such as press molding, injection molding, extrusion molding, casting molding and the like.
- it can be prepared in various forms such as adhesives, paints, inks, pastes, etc., depending on the use.
- the conductive composition of the present invention is required to have conductivity other than as a primer for electrostatic coating of resin-made exterior parts by appropriately selecting a binder and other components that become matritus according to the application. Can be used for various purposes. Specifically, for example, display 'personal computer' ⁇
- Conductive workbench for transporting parts flat package IC ⁇ leadless chip carrier IC ⁇ flexi Connectors for printed circuit boards, etc.
- Conductive workbench for transporting parts flat package IC ⁇ leadless chip carrier IC ⁇ flexi Connectors for printed circuit boards, etc.
- anisotropic conductive films and printed wiring boards etc.
- conductive paste for pattern formation for ceramic structures such as inductors, capacitors, resonators, etc.
- Conductive pastes LCDs, electronic mouthpieces, 'electroluminescence', anti-static films for solar cells, light control films, optical shutters and other display electronics components, adhesives for mounting semiconductor elements and light-emitting diodes, CRT (Cathode tube) '' LCD (Liquid Crystal Display) '' Electrodes of laminated display, such as PDP (Plasma Display), paint, paste, etc.
- the conductive flaky compound of the present invention can be adjusted to an arbitrary thickness, and is obtained by subjecting a substrate having a specific shape and an oxidizing rim content to a specific conductivity treatment, and thus has excellent properties.
- the conductive flaky compound of the present invention has high whiteness and concealing property since the base material is titanic acid.
- the base material is titanic acid.
- this is mixed with a resin to form a coating film, not only can it be a conductive thin film, but also a coating film having extremely high concealing properties can be produced.
- a primer for electrostatic coating it is mostly used for applications that require vivid colors.
- the resin base material to be coated at this time is often colored black, and there is a demand for concealing this black color with a primer layer. Therefore, this material having the whiteness and hiding properties of titanic acid is useful.
- whitening the primer layer It is useful not only for vivid colors such as red, blue, and yellow, but also for electrostatic coating of light colors such as beige, light blue, and pink. Of course, it can also be used for electrostatic painting of dark colors such as black and silver.
- Conductive flake compound present invention conductive composition comprising the present invention, the surface resistance value is in a very low range of normal 1 0 2-1 0, exhibits excellent conductivity.
- the matrix is a resin 'present composition, without affecting its film-forming properties, so wear surface resistance value can be arbitrarily adjusted, if this is used, 1 0 4 -1 0
- a thin film having a surface resistance of about 8 ⁇ and a thickness of about 1 to 10 ⁇ m can be easily manufactured.
- the conductive composition of the present invention also has the advantage that it has good dimensional accuracy due to low molding shrinkage, and exhibits excellent mechanical strength. Description of the preferred embodiment
- the K 20 residual amount of the layered titanic acid obtained by separation and washing was 2.0% by weight.
- the exchange rate of ions was 92%, and the exchange rate of Li ions was 99% or more. With K ion The combined exchange rate of Li ions was 94%.
- the layered titanic acid was dispersed in 5 kg of water, and 250 g (11 equivalent%) of a 1% by weight aqueous solution of n-propylamine was added with stirring.
- a raw material obtained by pulverizing and mixing 27.64 g of potassium carbonate, 4.91 g of lithium carbonate, 6.9.23 g of titanium dioxide, and 74.56 g of lithium chloride was calcined at 950 ° C for 4 hours. did.
- the fired sample was immersed in 10 kg of pure water, stirred for 20 hours, separated, washed and dried at 110 ° C.
- the K 20 residual amount of the layered titanic acid obtained by washing with water was 6.0%.
- ⁇ The exchange rate of ions was 76%, and the exchange rate of Li ions was more than 99%.
- This layered titanic acid was dispersed in 600 g of water, and 250 g (22 equivalent%) of a 0.6% aqueous solution of 3-methoxypropylamine was added with stirring. After stirring for about 1 hour, 100 g of 3.5% hydrochloric acid was added, the mixture was stirred at 60 ° C, and then separated by suction filtration. Disperse the water-containing cake in water, wash with water, and separate
- a raw material obtained by dry-milling 27.64 g of potassium carbonate, 4.9 lg of lithium carbonate and 69.23 g of titanium dioxide was calcined at 850 ° C for 4 hours.
- Layered titanate obtained has K 0. 8.
- the layer was washed on a Buchner funnel with 5 kg of 2% hydrochloric acid to obtain a layered titanic acid in which K ions and Li ions were exchanged for hydrogen or hydrogen ions.
- Kappa 2 o remaining amount of the layered titanic acid obtained by washing was 1 4% 0.1.
- the combined exchange rate of ⁇ and Li ions was 99.6%.
- This layered titanic acid was dispersed in 5 kg of water, and 250 g (11 equivalents 0 / o) of a 1% aqueous solution of ⁇ -propylamine was added with stirring. After stirring for about 30 minutes, 3.5% hydrochloric acid was added to adjust the pH to 2.0. After stirring for 1 hour, the mixture was separated by suction filtration.
- the operation of dispersing the water-containing cake in water, washing with water, and separating was performed three times to sufficiently wash the cake. It was dried at 110 ° C for 1.5 hours. The dried body was crushed with a mixer to obtain a flaky titanic acid powder. This powder became extremely large platelets larger than the initial particle size due to the superposition of very thin titanic acid having a thickness of 0.1 ⁇ or less. The average major axis was 10 ⁇ , and the average thickness was 0.5 ⁇ m.
- the K 0. 80 L i 0. 266 T i was 733 0 4 1 3 g 1.
- dispersed stirred 7 5% hydrochloric acid 2 00 g was replaced K ion and L i ions into hydrogen ions or arsenic mud Niumuion Layered titanic acid was obtained.
- the K 20 residual amount of the layered titanic acid obtained by washing with water was 6.0%.
- the ion exchange rate was 76%, and the Li ion exchange rate was more than 99%.
- the total exchange rate of K ions and L ions was 82%.
- This layered titanic acid was dispersed in 600 g of water, and 250 g (22 equivalent%) of a 0.6% aqueous 3-methoxypropylamine solution was added with stirring.
- a raw material obtained by dry grinding 28.3 g of potassium carbonate, 11.7 g of magnesium hydroxide, 64 g of titanium dioxide, and 75 g of lithium chloride was calcined at 110 ° C for 10 hours. It was produced.
- the fired sample was immersed in 1 O kg of pure water, dried for 20 hours, separated and washed, and dried at 110 ° C.
- the obtained white powder had an average major axis of 5 ⁇ m and an average thickness of 1 m.
- the K 0. 8. Mg. 4 . T i 1. 6. O 4 65 g is dispersed in 5 kg of 3.5% hydrochloric acid and stirred, and K and Mg ions are converted to hydrogen ions or The procedure of switching on was performed three times; the K 2 ⁇ residual amount of the layered titanic acid obtained by separation and washing was 0.5%, and the ⁇ [ ⁇ residual amount was 1.0%. The diion exchange rate was 98% and the Mg ion exchange rate was 92%.
- the combined exchange rate of K ions and Mg ions was 96%.
- This layered titanic acid was dispersed in 5 kg of water, and 500 g (23 equivalent%) of a 1% aqueous solution of n-propylamine was added with stirring. After stirring for about 30 minutes, 3.5% hydrochloric acid was added to adjust to ⁇ 12.0. After stirring for 1 hour, it was separated. The operation of dispersing in water, washing with water, and separating was performed three times to sufficiently wash. Dried at 110 ° C for 15 hours. The dried product was crushed with a mixer to obtain a flaky titanic acid powder ′. The K 2 O residual amount of this powder was 0.5%, the average major axis was 5 m, and the average thickness was 0.3 ⁇ .
- the combined exchange rate of K ions and Mg ions was 93%.
- This layered titanic acid was dispersed in 5 kg of water, and 500 g (23 equivalent%) of a 1% aqueous solution of n-propylamine was added with stirring. After stirring for about 30 minutes, 3.5% hydrochloric acid was added to adjust the pH to 2.0. After stirring for 1 hour, separation did. The operation of dispersing in water, washing with water, and separating was performed three times to sufficiently wash. After drying at 110 ° C for 15 hours, the mixture was crushed with a mixer to obtain flaky tidanic acid powder. The K 20 residual amount of this powder was 1.0%, the average major axis was 20 ⁇ m, and the average thickness was 0.5 ⁇ .
- Table 1 shows the composition formula, average major axis and average thickness of the layered titanate, average major axis and average thickness of the flaky titanic acid, and potassium content in terms of potassium oxide ( ⁇ 2 ⁇ ) in Synthesis Examples 1 to 6.
- the pH was kept in the range of 2 to 5 by simultaneously separately dropping a 15% by weight aqueous sodium hydroxide solution. After completion of the dropping reaction in the second step, the mixture was stirred for 30 minutes while maintaining the pH and the liquid temperature as they were. Then, after allowing to cool to room temperature, the reaction product was filtered, washed with water, dehydrated, and dried. The obtained dried product was subjected to a heat treatment at a temperature and for a time shown in Table 2 in the atmosphere of an oxidizing atmosphere to obtain a flaky conductive compound of the present invention.
- the average major axis, average thickness, and potassium content in terms of potassium oxide ( ⁇ 2 ⁇ ) of the flaky conductive compound in Examples 1 to 6 are the flaky titanium in Synthesis Examples 1 to 6, which are the respective raw materials. It was the same value as the acid.
- Table 2 shows ⁇ when stannic chloride and antimony trichloride were added, ⁇ when stannous chloride was added, and the temperature and time of the heat treatment in Examples 1 to 6.
- These flaky conductive compounds have a conductive property in which a first conductive layer composed of tin oxide and antimony oxide and a second conductive layer composed of tin oxide are sequentially formed on the surface of titanium oxide as a core material.
- the material was confirmed by TEM ('transmission electron microscope) observation.
- the average thickness of the first conductive layer was 10 nm, and the average thickness of the second conductive layer was 8 nm.
- the first conductive layer contained 21.0 parts by weight of antimony in terms of antimony oxide with respect to 100 parts by weight in terms of tin oxide.
- Comparative Example 1 Same as Example 1 except that flaky titanic acid of Synthesis Example 1 was replaced by particulate titanium oxide (trade name: JR, manufactured by Tika Co., Ltd., average particle size: 0.27 // m) To produce a particulate conductive compound.
- particulate titanium oxide trade name: JR, manufactured by Tika Co., Ltd., average particle size: 0.27 // m
- the intermediate product of the product obtained in Synthesis Example 1 is taken out at a stage before exfoliation with amine, and dried at 500 ° C. Except for using the obtained flaky titanium oxide (average major axis 30 ⁇ m, average thickness 2 / m, potassium content 1.9% by weight (converted to potassium oxide (K 2 o))). Was operated in the same manner as in Example 1 to produce a flaky conductive compound.
- titanium oxide fiber (trade name: FTL-200, manufactured by Ishihara Sangyo Co., Ltd., average fiber diameter 0.2 ⁇ , average fiber length 3 ⁇ )
- a fibrous conductive compound was produced in the same manner as in Example 1 except that the fibrous conductive compound was used.
- a raw material obtained by pulverizing and mixing 27.64 g of potassium carbonate, 4.91 g of lithium carbonate, .9.23 g of titanium dioxide, and 7.4.66 g of lithium chloride in a dry manner was obtained from 110 It was baked at ° C for 4 hours. The fired sample was immersed in 10 kg of pure water, stirred for 20 hours, separated, washed and dried at 110 ° C. The resulting white powder was layered titanate K 0. 8 is 0 L i 0. 266 T i and 7 33 0 4, the average long diameter 4 4 / zm, and an average thickness of 3 m.
- 0.5 g of a powder sample is placed in a polyacetal cylindrical container (outer diameter 28 mm, inner diameter 10 mm, length 3 Omm), and a copper rod serving as an electrode and having the same diameter as the inner diameter of the cylindrical container is inserted into the cylindrical container. insert from both sides of the container, compressed in 1 00 k pressure gZ cm 2 sandwiched sample powder took into previously, to measure the current value and the voltage value between the electrodes (copper-made bar), the resistance value R ( ⁇ ). 'Further, the volume resistivity p ( ⁇ ⁇ cm) was determined from the thickness of the sample and the electrode area at the time of measurement according to the following equation.
- a conductive resin composition and a comparative resin composition of the present invention were produced as follows.
- Acrylic binder for paint (trade name: Acroze Super-FS Clear 1, solid content 40%, manufactured by Dainippon Paint Co., Ltd.) was used at a ratio of 30% by weight to the solid content of Examples 1-6.
- the flaky conductive compound was mixed, stirred and mixed to produce the conductive composition of the present invention.
- Comparative compositions were produced in the same manner as described above except that the conductive compounds of Comparative Examples 1 to 4 were used instead of the conductive compounds of Examples 1 to 6.
- the thus obtained present invention and the comparative conductive composition were applied on a 50 ⁇ m-thick PET film so as to have a dry film thickness of 5 m, and dried.
- the coating film formed by the measuring instrument (trade name: Hiresta IP, high resistance 1 0 4 ⁇ 1 0 12 ⁇ for ⁇ Pi trade name.
- Lowrestor GP low resistance values 1 0 5 to 1 0 for 7 Omega, were both measured surface resistance value (Omega) with Mitsubishi Chemical Corp.). Table 3 shows the results.
- a conductive resin composition of the present invention and a comparative resin composition were produced as follows. .6,6-Nylon (trade name: Zytel, manufactured by Dupont) was mixed with the flaky conductive compound of Examples 1 to 6 at a ratio of 30% by weight, and kneaded to obtain the conductive composition of the present invention. A pellet was manufactured.
- Pellets of the composition for comparison were produced in the same manner as above, except that the conductive compounds of Comparative Examples 1 to 4 were used instead of the conductive compounds of Examples 1 to 6.
- Table 3 shows that when the flaky conductive compound of the present invention is contained, an excellent surface resistance value is exhibited even when a very thin film of 5 ⁇ is formed. On the other hand, in the case of the thin films of the conductive compounds of Comparative Examples 1 to 4 having a film thickness of 5 ⁇ m, good surface resistance was not exhibited, and it is clear that thinning was impossible. '
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Abstract
Description
Claims
Priority Applications (6)
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US10/521,939 US7288217B2 (en) | 2002-07-23 | 2003-07-16 | Electroconductive compound in flake form and electroconductive composition |
DE60313200T DE60313200T2 (de) | 2002-07-23 | 2003-07-16 | ELEKTROLEITFuHIGE ZUSAMMENSETZUNG IN FLOCKENFORM UND ELEKTROLEITFuHIGE ZUSAMMENSETZUNG |
JP2004522735A JP4410105B2 (ja) | 2002-07-23 | 2003-07-16 | 導電性薄片状化合物及び導電性組成物 |
EP03765300A EP1553603B1 (en) | 2002-07-23 | 2003-07-16 | Electroconductive compound in flake form and electroconductive composition |
CA002491728A CA2491728C (en) | 2002-07-23 | 2003-07-16 | Electroconductive compound in flake form and electroconductive composition |
AU2003252512A AU2003252512B2 (en) | 2002-07-23 | 2003-07-16 | Electroconductive compound in flake form and electroconductive composition |
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JP2002214488 | 2002-07-23 | ||
JP2002-214488 | 2002-07-23 |
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PCT/JP2003/009010 WO2004010439A1 (ja) | 2002-07-23 | 2003-07-16 | 導電性薄片状化合物及び導電性組成物 |
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US (1) | US7288217B2 (ja) |
EP (1) | EP1553603B1 (ja) |
JP (1) | JP4410105B2 (ja) |
KR (1) | KR100776556B1 (ja) |
CN (1) | CN100337287C (ja) |
AT (1) | ATE359591T1 (ja) |
AU (1) | AU2003252512B2 (ja) |
CA (1) | CA2491728C (ja) |
DE (1) | DE60313200T2 (ja) |
ES (1) | ES2285192T3 (ja) |
RU (1) | RU2310935C2 (ja) |
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WO (1) | WO2004010439A1 (ja) |
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US20060097230A1 (en) | 2006-05-11 |
EP1553603A4 (en) | 2006-05-17 |
KR100776556B1 (ko) | 2007-11-15 |
RU2005104842A (ru) | 2005-09-10 |
DE60313200T2 (de) | 2008-01-03 |
AU2003252512A1 (en) | 2004-02-09 |
KR20050027123A (ko) | 2005-03-17 |
CA2491728A1 (en) | 2004-01-29 |
AU2003252512B2 (en) | 2006-09-14 |
ATE359591T1 (de) | 2007-05-15 |
DE60313200D1 (de) | 2007-05-24 |
ES2285192T3 (es) | 2007-11-16 |
EP1553603A1 (en) | 2005-07-13 |
RU2310935C2 (ru) | 2007-11-20 |
TW200407461A (en) | 2004-05-16 |
US7288217B2 (en) | 2007-10-30 |
JPWO2004010439A1 (ja) | 2005-11-17 |
JP4410105B2 (ja) | 2010-02-03 |
CN1672220A (zh) | 2005-09-21 |
CA2491728C (en) | 2009-10-13 |
CN100337287C (zh) | 2007-09-12 |
EP1553603B1 (en) | 2007-04-11 |
TWI230743B (en) | 2005-04-11 |
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