WO2005041213A1 - 導電性ペースト - Google Patents
導電性ペースト Download PDFInfo
- Publication number
- WO2005041213A1 WO2005041213A1 PCT/JP2004/015776 JP2004015776W WO2005041213A1 WO 2005041213 A1 WO2005041213 A1 WO 2005041213A1 JP 2004015776 W JP2004015776 W JP 2004015776W WO 2005041213 A1 WO2005041213 A1 WO 2005041213A1
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- WIPO (PCT)
- Prior art keywords
- conductive paste
- resin
- silver powder
- powder
- conductive
- Prior art date
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Classifications
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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
- H01B1/20—Conductive material dispersed in non-conductive organic material
- H01B1/22—Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/321—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by conductive adhesives
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/09—Use of materials for the conductive, e.g. metallic pattern
- H05K1/092—Dispersed materials, e.g. conductive pastes or inks
- H05K1/095—Dispersed materials, e.g. conductive pastes or inks for polymer thick films, i.e. having a permanent organic polymeric binder
Definitions
- the present invention relates to a conductive paste, and more particularly, to a conductive paste or a conductive adhesive for an element of an electric circuit or various electronic components having conductivity, a wiring board, a metal, and the like.
- the present invention relates to a conductive paste that can be used.
- Sn—Pb eutectic solder is widely used as a conductive adhesive used for connecting elements of various electronic components or assembling a wiring board from the viewpoint of conductivity and high reliability. Has been used.
- connection terminals In recent years, as electronic devices have become lighter, thinner, smaller and more sophisticated, it has become necessary to reduce the width and spacing of the connection terminals to a fine pitch and to wire a large number of connection terminals. However, there is a technical problem that the bridging phenomenon easily occurs in the soldering process in connection terminals having a fine pitch. Furthermore, since the solder has a high reflow temperature, electronic components and members may be damaged, and lead contained in solder has been taken up as a problem from the viewpoint of environmental safety! Puru.
- lead-free solder As a method for making the adhesive lead-free, use of lead-free solder or use of a conductive paste is known.
- lead-free solder has a higher melting point than Sn-Pb solder, and the usable members are further limited.
- the conductive paste has a merit that the processing temperature is lower than that of the solder, the bonding portion becomes flexible due to the influence of the binder resin contained therein, and the bonding portion is less likely to crack.
- the conventionally known conductive paste has a problem that its migration property is inferior. Migration is a phenomenon in which, when a voltage is applied to a circuit, the conductive metal filler is ionized and precipitated due to the influence of moisture, which grows in a dendrite shape and short-circuits between the circuits. . Japanese Patent Application Laid-Open Publication No.
- 1-159906 discloses a conductive paste in which flake-shaped silver powder is dispersed and a dendritic-shaped silver powder are dispersed. Pastes are disclosed, but none of them V, does not satisfy the required migration resistance at the level! / ,.
- a conventional migration measure a method of separately forming a waterproof protective layer by coating or sealing, or a method of forming a waterproof protective layer with a conductive paste using a non-metallic conductive powder such as Dalaphite or carbon black is used.
- a non-metallic conductive powder such as Dalaphite or carbon black
- the conductive paste enables thick film printing in order to prevent the circuit resistance from rising due to fine wiring of the circuit by the fine pattern, and the volume of the conductive paste used for conductive adhesives. Because of the need to reduce shrinkage, it is required to reduce the amount of solvent and increase the solids concentration.
- conductive metal fillers used for conductive paste include flake-like powder, spherical powder, and dendritic (dendrite-like) powder, all of which have poor migration resistance and tend to have high paste viscosity. Therefore, it is difficult to increase the solid content of the conductive paste.
- FIG. 1 is a test pattern for evaluation of migration resistance. 1 indicates a PET film, and 2 indicates a screen printing pattern.
- An object of the present invention is to provide a conductive paste having excellent migration resistance and capable of increasing the solid content concentration.
- the present inventors have conducted intensive studies to achieve the above object, and as a result, have reached the following invention. . That is, the present invention is the following conductive paste.
- the first invention is a polyhedral metal powder (A) in which the conductive filler has a shape that also has a planar force of six or more in a conductive paste containing a binder resin and a conductive filler. It is a conductive paste characterized by the above.
- a second invention is the conductive paste according to the first invention, wherein the metal powder (A) is a silver powder.
- a third invention is the conductive paste according to the first invention, wherein the binder resin contains an epoxy resin.
- a fourth invention is the conductive paste according to the first invention, wherein the binder resin contains polyester resin and Z or modified polyester resin.
- a fifth invention is the conductive base according to the first invention, wherein the binder resin contains an epoxy resin, and a polyester resin and Z or a modified polyester resin. .
- a peak appears at a diffraction angle of 38.05 ° in a force X-ray diffraction reflection method in a part or all of the conductive filler.
- a silver powder (B) having a half width of 0.31 or less.
- a seventh invention is the conductive paste according to the sixth invention, wherein the binder resin contains an epoxy resin.
- An eighth invention is the conductive paste according to the sixth invention, wherein the binder resin contains a polyester resin and Z or a modified polyester resin.
- a ninth invention is the conductive paste according to the sixth invention, wherein the binder resin contains an epoxy resin, a polyester resin and Z or a modified polyester resin. .
- the conductive paste of the present invention contains a binder resin and a polyhedral metal powder (A) having six or more flat surfaces, or has a diffraction angle of 38. Excellent by including silver powder (B) whose half-width of the peak appearing at 0 5 ° is 0.31 or less It has excellent migration resistance, heat resistance, and adhesiveness, and can achieve low workability despite high solid content.
- the conductive paste of the present invention can be used not only for printed circuits on flexible substrates such as rigid substrates, polyimide films, and PET films, but also for conductive adhesives, conductive coating agents, and through materials for various electronic components. It is suitable for use as a conductive paste for holes and a conductive paste for a build-up multilayer substrate, and is particularly suitable for use as a solid electrolytic capacitor because of its excellent equivalent series resistance in a high frequency range.
- the conductive filler used in the present invention contains polyhedral metal powder (A) having a shape of 6 or more and also having a plane force.
- a metal powder is a polycrystal in which a large number of fine metal crystals are gathered at the time of generation. Highly crystallized by controlling the process, it is a single crystal or a single crystal.
- the effect of minimizing the surface area with respect to volume works for thermodynamic stability, and the shape of the fine particles becomes polyhedral.
- the polyhedral metal powder is highly crystallized, the surface is smooth and the specific surface area is small.
- a polyhedral metal powder having a shape of six or more plane forces includes silver powder, gold powder, platinum powder, noble metal powder such as palladium powder, copper powder, nickel powder, aluminum powder, brass powder, and stainless steel.
- Base metal powder such as powder. Different kinds of metal powders can be mixed and used.
- a polyhedral metal powder having a shape with a plane force of six or more has a small surface area per unit volume, so that contact with moisture can be reduced, so that migration resistance is improved. Similarly, since the surface area is small, the dispersibility becomes good, and the solid content concentration of the conductive paste can be increased. Of these metal powders, silver powder is the most preferred in terms of cost and reliability.
- the polyhedral metal powder having a shape composed of six or more planes may be a polygonal plate such as a two-dimensional hexagonal plate or an octagonal plate having a high aspect ratio. Further, a polyhedral metal powder having a shape composed of six or more flat surfaces may be pulverized by using a known device such as a ball mill, a bead mill, and an attritor to form a plate. The metal powder obtained from the flakes compared to metal powder of the same average particle size The specific surface area is much smaller than that of powder, and the surface is smooth without irregularities.
- the half width of the peak appearing at a diffraction angle (2 °) of 38.05 ° in the X-ray diffraction reflection method is partially or entirely included in a part or all of the conductive filler used in the conductive paste.
- silver powder (B) of 31 or less. This is because the silver powder having a peak half width of 0.31 or less is highly crystallized and is a single crystal or a material close to a single crystal.
- the upper limit of this half width is more preferably 0.26 or less.
- the lower limit is not specified, but it is 0.05 or more.
- the "X-ray diffraction reflection method" referred to in the present invention is as follows. The measurement is performed by the wide angle X-ray diffraction reflection method. Rigaku Geigerflex is used as the X-ray generator, and the X-ray tube with a copper counter electrode is set to an output of 40 kV and 38 mA to generate X-rays (CuK ⁇ -rays). The optical system uses the wide-angle reflection method and installs a monochromator in front of the counter to monochromatic X-rays.
- the slits are set at 1 ° divergence slit, 1 ° scatter slit, and 0.3mm light receiving slit, and the X-ray intensity is measured at a scanning speed of 2 ° Z (data sampling capture interval 0.01 °).
- the silver powder of the sample is to be attached to a glass sample plate for measurement.
- the obtained data peak intensity of X-ray diffraction
- Rigaku lint system is taken into Rigaku lint system and analyzed to determine the half width.
- the silver powder (B) having a half-value width of 0.31 or less at a peak at a diffraction angle of 38.05 ° in the X-ray diffraction reflection method is polyhedral silver powder having six or more planes, and an aspect ratio of And a polygonal silver powder such as a two-dimensional hexagonal plate or an octagonal plate having a high surface roughness.
- the average particle diameter (50% D) of the metal powder (A) or silver powder (B) used in the present invention is preferably 0.1 ⁇ m or more, more preferably 0. .5 ⁇ m or more.
- the upper limit is preferably 20 m or less, and more preferably 10 m or less, from the viewpoints of dispersion and printability.
- the conductive paste of the present invention may contain a conductive filler other than the metal powder (A) or the silver powder (B).
- a conductive filler other than the metal powder (A) or the silver powder (B).
- known conductive fillers can be used as long as the properties do not deteriorate. For example, flake-like (flake-like), spherical, millet-like, dendritic-like metal powders, three-dimensionally agglomerated metal powders, and precious metals such as silver are plated or alloyed with precious metals such as silver.
- Metal powder and resin beads with metal The conductive powder, carbon black, and carbon powder such as graphite are exemplified.
- an inorganic filler such as silica, talc, myric acid, barium sulfate, and indium oxide may be added.
- metal powder (A) or silver powder (B) in combination with flake-shaped metal powder from the viewpoint of adhesiveness, and metal powder (A) is more preferable from the viewpoints of reliability and adhesion.
- silver powder (B) and flake silver powder in combination.
- conductive carbon black in combination from the viewpoint of conductivity.
- the metal powder (A) and the silver powder (B) are preferably blended in an amount of 15% by mass or more in order to improve the migration resistance with respect to the total amount of the conductive filler and increase the solid content. It is preferably at least 20% by mass.
- the upper limit is not particularly limited.
- the mixing ratio of the conductive filler and the binder resin is preferably 75% by mass or more from the viewpoint of conductivity, when the total amount of the conductive filler and the binder resin is 100% by mass. It is more preferably 80% by mass or more.
- the upper limit is preferably 95% by mass or less, more preferably 90% by mass or less, from the viewpoints of adhesiveness and ink viscosity.
- the type of the binder resin used in the conductive paste of the present invention is not particularly limited, but may be an epoxy resin, a polyester resin, a urethane-modified polyester resin, an epoxy-modified polyester resin, or an acryl-modified polyester.
- Various modified polyester resins such as resin, polyether urethane resin, polycarbonate urethane resin, vinyl chloride / vinyl acetate copolymer, phenol resin, acrylic resin, polyamide imide resin, polyimide resin, polyimide resin Modified celluloses such as amide resin, nitrocellulose, cellulose 'acetate' butyrate (CAB), and cellulose 'acetate' propionate (CAP).
- a polyamideimide resin is preferable.
- an epoxy resin as the binder resin when the binder resin is used for a conductive adhesive or a through hole. More preferably, a combination of an epoxy resin and a phenol resin is used. Further, from the viewpoint of adhesiveness, it is particularly preferable to blend an appropriate amount of a soft component such as a butadiene acrylonitrile copolymer having a carboxylic acid at the terminal.
- heat resistance means a change in physical properties such as adhesive strength before and after heat history.
- ⁇ ⁇ heat resistance means heat history after bonding conductors with conductive paste. This also includes a small change in the coating film resistance value before and after.
- the conductive paste of the present invention is excellent in initial conductivity and has a particularly small change in resistance value after heat history.
- the binder resin preferably contains an epoxy resin.
- Epoxy resins include phenol novolak type epoxy resin, cresol nopolak type epoxy resin, bisphenol A type epoxy resin, bisphenol F type epoxy resin, bisphenol S type epoxy resin, Nippon Iride Novolak-type epoxy resin containing biphenol skeleton such as NC-3000 manufactured by Yakuhin Co., Ltd.
- Epoxy resin containing biphenol skeleton such as CER-3000L manufactured by Nippon Daniyaku Co., Ltd., high molecular weight phenoxy resin , Hydrogenated bisphenol A type epoxy resin, dimer acid modified epoxy resin, rubber modified epoxy resin, urethane modified epoxy resin, chelate modified epoxy resin, acrylic urethane modified epoxy resin, brominated epoxy resin And polyethylene glycol diglycidyl ether.
- bisphenol A type epoxy resin, phenol novolak type epoxy resin, cresol novolak type epoxy resin, novolak type epoxy resin containing biphenol skeleton and biphenol skeleton were included.
- Epoxy resin is preferred. More preferably, it is a novolak type epoxy resin.
- a resin or a curing agent capable of reacting with the epoxy resin may be added!
- these compounds include novolak-type phenol resins, resole-type phenol resins, alkyl etherified amino resins, isocyanate conjugates, block isocyanate conjugates, and acid anhydrides. From the viewpoints of curability and heat resistance, a novolak type phenol resin is preferred.
- a polyester resin may be used as a binder resin for the purpose of improving adhesiveness and flexibility.
- the polyester resin those obtained by polycondensation under normal pressure or reduced pressure by a known method can be used.
- the dicarboxylic acid copolymerized with the polyester resin should be copolymerized with at least 50 mol% of an aromatic dicarboxylic acid in all the acid components. It is more preferably at least 60 mol%, most preferably at least 70 mol%. Upper limit is particularly limited Hanagu 100 mol% is acceptable. If the amount of the aromatic dicarboxylic acid is less than 50 mol%, heat resistance, adhesive strength, durability and the like may be reduced.
- aromatic dicarboxylic acid examples include terephthalic acid, isophthalic acid, orthophthalic acid, 2,6-naphthalenedicarboxylic acid, and the like.
- terephthalic acid and isophthalic acid are preferably used in combination from the viewpoints of properties such as heat resistance and adhesiveness and solubility of the solvent.
- dicarboxylic acids include aliphatic dicarboxylic acids such as succinic acid, glutaric acid, adipic acid, azelaic acid, sebacic acid, dodecanedicarboxylic acid, dibasic acids having 12 to 28 carbon atoms, and 1,4-cyclohexane Xandicarboxylic acid, 1,3-cyclohexanedicarboxylic acid, 1,2-cyclohexanedicarboxylic acid, 4-methylhexahydrophthalic anhydride, 3-methylhexahydrophthalic anhydride, 2-methylhexahydrophthalic anhydride
- alicyclic dicarboxylic acids such as dicarboxy-hydrogenated bisphenol 8, dicarboxy-hydrogenated kafun bisphenol S, dimer acid, hydrogenated dimer acid, hydrogenated naphthalenedicarboxylic acid, and tricyclodecane dicarboxylic acid. It can be copolymerized with an aromatic dicarboxy
- the aliphatic dicarboxylic acid is preferably one having 9 or more carbon atoms in the main chain, such as azelaic acid and sebacic acid. Further, 1,4-cyclohexanedicarboxylic acid is also preferable.
- the alkylene glycol used for the polyester resin includes ethylene glycol, 1,2-propylene glycol, 1,3 propanediol, 2-methinole 1,3 propanediol, 1,4 butanediol, 1,5 pentanediol, Neopentyl glycol, 1,6-hexanediol, 3-methyl-1,5-pentanediol, 2-methyl-1,5 pentanediole, 2,2 Jethyl-1,3 propanediole, 2-butyl-2-ethylethyl 1,3-butanediol, 1,9-nonanediol, 1,10-decanediol, 1,4-cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,2-cyclohexanedimethanol, dimer Diols and the like.
- Polyhydric polyols such as trimethylolethane, trimethylolpropane, g
- neopentyl glycol, 2-methyl-1,3-propanediol, and long-chain aliphatic diols having 5 to 10 carbon atoms in the main chain are particularly preferred from the viewpoint of durability.
- the content is preferably 20 mol% or more, more preferably 30 mol% or more.
- the upper limit is not particularly specified and may be 100 mol%.
- the composition ratio referred to in the present specification can be determined by 1 H-NMR analysis.
- the lower limit of the number average molecular weight of the polyester resin is preferably 2,000 or more, more preferably 3,000 or more, and most preferably 4,000 or more.
- the upper limit is not particularly limited, when the conductive paste of the present invention is used as a conductive adhesive, it is preferable to increase the solid content concentration in order to reduce the influence of the solvent. It is preferably 000 or less, more preferably 10,000 or less. If the number average molecular weight is less than 2,000, bending resistance and heat cycle resistance tend to decrease.
- a block copolymer polyester resin may be obtained by performing a ring-opening addition reaction of a cyclic ester such as ⁇ -force prolatatatone at 180 230 ° C.
- a polyvalent carboxylic acid such as trimellitic anhydride or pyromellitic anhydride may be copolymerized to introduce a branched structure, or an unsaturated dicarboxylic acid such as fumaric acid may be used.
- An acid and a dicarboxylic acid containing a sulfonic acid metal base such as sodium 5-sulfoisophthalate may be used in combination.
- polyester resin used in the present invention can be used after being modified.
- modification method include urethane modification, epoxy modification, and acrylic modification.
- polyester resin When the polyester resin is urethane-modified, those synthesized by reacting the above-mentioned polyester polyol and, if necessary, a low-molecular-weight polyol with an isocyanate conjugate can be used. It is preferable to use a polyol having a molecular weight of less than 500 as the low-molecular diol.
- a polyol having a molecular weight of less than 500 for example, known polyols such as neopentyl glycol, 1,6-xanediol, ethylene glycol, hydroxypivalic acid ester of neopentyl glycol, trimethylolpropane, and glycerin can be used. Polyols. Further, a carboxyl group-containing polyol such as dimethylolpropionic acid can be used as the low-molecular polyol.
- the diisocyanate conjugate used for the urethane modification includes tetramethylene diisocyanate, hexamethylene diisocyanate, toluene diisocyanate, diphenylmethane diisocyanate, and hydrogenated diphenate. Methane diisocyanate, xylylene diisocyanate, hydrogenated xylylene diisocyanate, isophorone diisocyanate and the like. [0043] Urethane group concentration of the urethane-modified polyester ⁇ is adhesion, flexibility surface 500 one 4000 equivalents ZL0 6 g are preferred. The number average molecular weight is preferably 8,000 to 20,000 from the viewpoint of flex resistance and paste viscosity! / ⁇ .
- the epoxy-modified polyester resin is prepared by reacting the polyester resin with an acid anhydride such as trimellitic anhydride or phthalic anhydride to convert a molecular terminal into a carboxyl group. It can be produced by reacting with epoxy resin in the presence of a catalyst such as triphenylphosphine.
- an acid anhydride such as trimellitic anhydride or phthalic anhydride to convert a molecular terminal into a carboxyl group. It can be produced by reacting with epoxy resin in the presence of a catalyst such as triphenylphosphine.
- epoxy modification is preferred from the viewpoint of heat resistance.
- the noinder resin it is preferable to use an epoxy resin and a polyester resin or Z or a modified polyester resin in combination from the viewpoint of adhesiveness.
- the preferred mixing ratio of epoxy resin and polyester resin and Z or modified polyester resin is (mass of epoxy resin) Z ⁇ (mass of epoxy resin) + (polyester resin and Z or modified polyester resin) (Mass of resin) is preferably 0.05 or more, more preferably 0.1 or more.
- the upper limit is preferably 0.70 or less, more preferably 0.60 or less. If it is larger than 0.070, the bending resistance may be lowered or cracks may easily occur at the bonding interface, and if it is smaller than 0.05, the curability may be deteriorated.
- the conductive paste of the present invention may contain a curing catalyst such as an imidazole compound, an acid anhydride, and triphenylphosphine.
- a curing catalyst such as an imidazole compound, an acid anhydride, and triphenylphosphine.
- imidazole compounds are particularly preferred because of their good curability and low corrosiveness.
- imidazole compounds examples include 2-phenyl-4,5-dihydroxymethylimidazole, 2-methylimidazole, 1-cyanoethyl-2-methylimidazolimim trimellitate, 1-benzyl-2-methylimidazole, 4-Diamino-6- [2-methylimidazolyl (1,)]-ethyl-s-triazine, 2-methylimidazole isocyanuric acid-added product, 2-phenylimidazole, 2-methylimidazoline, etc. No.
- 2-fluoro-4,5-dihydroxymethylimidazole 2-phenyl-4-methyl-5-hydroxymethylimidazole, 2,4-diamino-6- [2, -Methylimidazolyl (1,)]-ethyl-s-triazine isocyanuric acid adduct is preferred.
- Solvents used in the conductive paste of the present invention are not limited to the type thereof, and may be ester-based or ketone-based. Ton-based, ether-ester, chlorine-based, alcohol-based, ether-based, hydrocarbon-based, and the like. Among these, a solvent having a boiling point of 140 ° C. or higher is preferred from the viewpoint of workability.
- solvents examples include ethyl carbitol acetate, butyl sorbitol acetate, butyl carbitol, butyl carbitol acetate, isophorone, cyclohexanone, ⁇ -butyrolataton, ⁇ -methyl- 2 -pyrrolidone, dimethylacetamide and the like. Is mentioned.
- the solid content is preferably 75% or more, more preferably 80% or more, in order to reduce the adverse effect of the solvent. is there.
- the viscosity of the conductive paste under a measurement condition of 20 rpm and 25 ° C using a Brookfield type rotational viscometer is preferably 100 dPa's or less, more preferably 800 dPa's or less.
- the lower limit is preferably 100 dPa's or more, more preferably 200 dPa's or more. Exceeding this range tends to degrade the screen printability of the conductive paste and the workability when using a dispenser.
- the degree of deformation (thixotropic property) of the conductive paste is also important, and is preferably 1.5 or more, more preferably 2.0 or more in the measurement method described later.
- the upper limit is preferably 7.0 or less, more preferably 6.0 or less. ⁇ If the degree of change is less than 1.5, there is a tendency that sagging occurs when dispenser is applied, and if it exceeds 7.0, it tends to not flow (paste does not flow).
- parts means “parts by mass”.
- the number average molecular weight in terms of polystyrene was measured by GPC (gel permeation chromatography).
- the measurement was performed using a differential scanning calorimeter (DSC) at a heating rate of 20 ° CZ.
- DSC differential scanning calorimeter
- 5 mg of the sample was placed in an aluminum holding lid type container and crimped.
- the viscosity was measured at 20 rpm using a Brookfield BH rotational viscometer. ⁇ Variation was similarly measured for viscosity at 2 rpm and calculated by the following equation. The measurement was performed at 25 ° C.
- a copper foil having a thickness of 100 ⁇ m was polished in water using Scotch Bright (a nonwoven fabric abrasive manufactured by Sumitomo 3LEM), washed with ion-exchanged water, and dried.
- This copper foil is cut into 10 mm x 25 mm to make two copper foils, and the conductive paste is dried to a thickness of 50 ⁇ 5 m at 10 mm from the longitudinal end of one copper foil. Was applied.
- the other copper foil was stuck alternately so that the portion overlapping the copper foil coated with the conductive paste was 10 mm ⁇ 10 mm.
- the mixture was cured by heating at 170 ° C. for 1 hour using a hot air dryer. Then, using a 4-deep needle resistance measuring instrument, terminals were connected to the upper and lower non-adhered copper foil portions (the copper foil did not overlap), and the initial resistance (R) was measured.
- solder reflow is assumed
- the resistance (R) was measured again after the heat treatment at 250 ° C for 1 minute
- the 101 conversion rate was calculated.
- the number of repeated measurements (hereinafter referred to as N) was represented by an average value of 5.
- the calculation formula is shown below.
- Resistance change rate (%) ⁇ (R-R) ZR ⁇ X 100
- 15g of metal powder is placed in a sample tube, and measured at 60 ⁇ 5 ° C using an automatic measuring device for specific surface area (Microneritics 2300, manufactured by Shimadzu Corporation; BET method, N gas adsorption one-point method).
- an automatic measuring device for specific surface area Microneritics 2300, manufactured by Shimadzu Corporation; BET method, N gas adsorption one-point method.
- the specific surface area per lg was calculated by reducing the total surface area by the sample amount.
- the metal powder lOOg was weighed and gently dropped into a lOOcc measuring cylinder with a funnel.
- the sample was placed on a tap density measuring machine, dropped 20 times at a distance of 20 mm ', dropped 600 times at a speed of Z minutes, and the volume of the compressed metal powder was measured. The volume was calculated from the weight and volume of the metal powder.
- the crystallinity of the metal powder was examined by the wide-angle X-ray diffraction reflection method.
- Rigaku Geigerflex was used as the X-ray generator, and the X-ray tube of the copper counter electrode was set to an output of 40 kV and 38 mA.
- a line (CuKa line) was generated.
- the optical system used a wide-angle reflection method, and a monochromic meter was installed in front of the counter to monochromatic X-rays.
- the slits were set to a divergence slit of 1 °, a scattering slit of 1 °, and a light receiving slit of 0.3 mm, and the X-ray intensity was measured at a scanning speed of 2 ° Z (data sampling capture interval of 0.01 °).
- the silver powder of the sample was applied to a glass sample plate for measurement.
- the obtained data (X-ray diffraction peak intensity) was taken into a Rigaku lint system and analyzed to determine the half width. According to the X-ray diffraction theory, the half-width of the peak is related to the apparent size and the degree of order of the crystal (ref.
- composition of the obtained copolymerized polyester a was terephthalic acid
- ZZ ethylene glycol Z neopentyl dalicol 50Z50ZZ55Z45 (molar ratio), number average molecular weight 15,000, acid value 35 equivalents Zt, Tg 65 ° C.
- Table 1 The results are shown in Table 1.
- Table 1 The results are shown in Table 1.
- Epicot 1004 manufactured by Japan Epoxy Resin Co., Ltd.
- a commercially available polyhedral silver powder (RDSF11000-06, manufactured by Hueguchi 'Japan Co., Ltd.) having a shape of a plane force of 6 or more was used as it was.
- the average particle diameter (50% D) was 1.
- the specific surface area was 0.51 m 2 / g, and the tap density was 4.2 gZcm 3 .
- the half-value width of the diffraction peak appearing at the diffraction angle of 38.05 ° by the wide-angle X-ray diffraction reflection method was 0.18.
- Figure 2 shows the shape. Table 2 shows the powder properties.
- Silver powder having the same shape as silver powder a and small particle size was used.
- the average particle diameter (50% D) was 0.7 m
- the specific surface area was 1.60 mg
- the tap density was 3.4 gZcm 3 .
- the half value width of the diffraction peak appearing at the diffraction angle of 38.05 ° by the wide-angle X-ray diffraction reflection method was 0.17. Table 2 shows the powder properties.
- Silver powder having the same shape as the silver powder a and having a large particle diameter was used.
- the average particle size (50% D) was 5.8 ⁇ m
- the specific surface area was 0.20 mg
- the tap density was 4.6 gZcm 3 .
- the half width of the diffraction peak at the diffraction angle of 38.05 ° by the wide-angle X-ray diffraction reflection method was 0.23. Table 2 shows the powder properties.
- silver powder d Commercially available polyhedral silver powder with an average particle diameter (50% D) of 1. O ⁇ m, a specific surface area of 0.85 m 2 Zg, and a tap density of 4. OgZcm 3 100 parts, 60 parts of ethylene glycol and 0.3 part of oleic acid as a lubricant were added, and after premixing, pulverization was carried out for 3 hours with an attritor mill using zirconia beads having a diameter of lmm.
- a commercially available polyhedral nickel powder was used.
- the average particle diameter (50% D) is 3. O ⁇ m, specific surface area of 0. 42m 2 / g, the tap density was 0. 85g / cm 3.
- Table 2 shows the powder properties.
- Silver powder having the same shape and small particle diameter as silver powder d was used.
- the average particle size (50% D) was 4.0 m
- the specific surface area was 0.31 m 2 Zg
- the tap density was 6.lgZcm 3 .
- the half-width value of the diffraction peak appearing at the diffraction angle of 38.05 ° by the wide-angle X-ray diffraction reflection method was 0.27. Table 3 shows the powder properties.
- a commercially available amorphous silver powder (AgC-156I, manufactured by Fukuda Metal Foil & Powder Co., Ltd.) was used.
- the average particle diameter was 2.9 / ⁇
- the specific surface area was 1.00 m 2 Zg
- the tap density was 4.5 gZcm 3 .
- the half-width value of the diffraction peak appearing at the diffraction angle of 38.05 ° by the wide-angle X-ray diffraction reflection method was 0.36.
- Table 3 shows the powder properties.
- silver powder i Commercially available flake silver powder (SF70, manufactured by Hueguchi 'Japan Co., Ltd.) was used.
- the average particle diameter was 2. O ⁇ m
- the specific surface area was 1.47 m 2 Zg
- the tap density was 3.3 gZcm 3 .
- the half-value width of the diffraction peak that appeared at the diffraction angle of 38.05 ° by the wide-angle X-ray diffraction reflection method was 0.32. Table 3 shows the powder properties.
- a commercially available amorphous granular silver powder (K-ED, manufactured by Fujiguchi Japan Co., Ltd.) was used.
- the average particle diameter by light scattering was 0.8 / ⁇
- the specific surface area was 1.89 m 2 Zg
- the tap density was 2.8 gZcm 3 .
- the half value width of the diffraction peak appearing at a diffraction angle of 38.05 ° by the wide-angle X-ray diffraction reflection method was 0.35.
- Table 3 shows the powder properties.
- a paste was prepared by blending flake-shaped silver powder g in addition to polyhedral silver powder b having six or more plane forces as a conductive filler. As a result of using flaky silver powder in combination, better specific resistance than in Example 1 was obtained.
- the migration resistance was good at 300 seconds, the viscosity was appropriate at 400 dPa's at a solid content of 83%, and the screen printability and workability when using a dispenser were also good. Also, the initial resistance after bonding (R)
- Example 1 is 56 m ⁇ , which is even lower than that of Example 1 in the case of using only polyhedral silver powder having a shape having a plane force of 6 or more as the conductive filler.
- the composition is shown in Table 4 and the results are shown in Table 5.
- the migration resistance was better than that of Example 1 by the addition of carbon black.
- the dispersibility was good even when fine carbon black having a very large specific surface area was blended.
- the paste viscosity was appropriate at a solid content of 83% and the paste viscosity was 500 dPa ⁇ s. Workability when using screen printing and dispensers was also good.
- the composition is shown in Table 4 and the results are shown in Table 5.
- Example 4 Evaluation was performed in the same manner as in Example 1 with the formulations shown in Table 4.
- Example 4 a combination of a polyhedral nickel powder and a flake-like silver powder having six or more flat surfaces as a conductive filler was examined. showed that.
- Example 5 and 6 novolak-type epoxy resin and novolak-type phenol resin were used. As a result, better shear adhesive strength was obtained than in Example 1, and the solid content concentration could be increased. All of the examples were excellent in migration resistance, heat resistance, and adhesiveness, and were able to increase the solid content concentration with an appropriate viscosity. Table 5 shows the results.
- Example 1 Example 2
- Example 3 Example 4
- Example 5 Example 6
- Silver powder a Silver powder a
- NC-Epoxy resin Noholak type Noho 'rack type Noho "rack type Noho" rack type Noholak type
- Phenol resin Phenol resin 8) Phenol resin 8) Fat
- a conductive paste was prepared and evaluated in the same manner as in Example 1.
- Comparative Example 1 and Comparative Example 4 flake silver powder was examined for the conductive filler. However, since the viscosity was increased, workability was problematic, and the migration resistance was poor.
- Comparative Example 2 the combination of the flake silver powder and the amorphous silver powder was examined, but similarly, the viscosity was high and the migration resistance was poor.
- the obtained conductive paste had good migration resistance in 320 seconds.
- the specific resistance was 9. 5 X 10- 4 ⁇ 'cm .
- Initial shear bond strength was 300NZc m 2.
- the heat resistance was a rate of change in resistance + 10%.
- the viscosity was good at 200 dPa's.
- the composition is shown in Table 8 and the results are shown in Table 9.
- a conductive filler polyhedral silver powder c having an average particle diameter of 5.8 m with a plane force of 6 or more was blended, and a paste with a higher blending ratio of conductive filler was prepared. Good specific resistance was obtained at a higher solid content concentration than in Example 1. The migration resistance was good at 300 seconds, the viscosity was appropriate at 300 dPa's at a solid content concentration of 92%, and the workability when using screen printing or a dispenser was also good.
- 0 100 m ⁇ , which is lower than that of Example 7.
- the composition is shown in Table 8 and the results are shown in Table 9.
- a conductive filler in addition to polyhedral silver powder a having a shape composed of six or more flat surfaces, silver powder d obtained by pulverizing polyhedral silver powder and mixing it into a plate is mixed, and BF (Chuetsu graphite)
- a paste was prepared by blending Vulcan XC-72 (produced by Cabot Corporation) with carbon black Vulcan XC-72.
- the migration resistance was better than that of Example 7 by blending carbon black. Even when fine carbon black having a very large specific surface area was blended, the dispersibility was good and the paste viscosity at a solid content of 83% was 250 dPa's, which was an appropriate viscosity. Workability when using screen printing or a dispenser was also good.
- the specific resistance was better than that of Example 8, and the initial resistance (R) after bonding was also 50 ⁇ .
- flaky silver powder i is blended in addition to polyhedral silver powder a having a shape of a plane force of 6 or more, and butadiene acrylonitrile copolymer CTBN1300 X 13 (Ube Industries, Ltd. As a result of partially using Good shear adhesion was obtained. In addition, even when the solid content concentration was high, the viscosity was appropriate, and the migration resistance was also good.
- the composition is shown in Table 8 and the results are shown in Table 9.
- polyhedral silver powder is pulverized and mixed with flake-shaped silver powder i in addition to silver powder f that has been slab-shaped, and Ketchen Black ECP-600JD of carbon black is mixed to create a cost. did.
- Dimer acid-modified epoxy resin Epicoat 871 manufactured by Japan Epoxy Resin Co., Ltd.
- the noinder resin even better specific resistance and shear adhesive strength than in Example 7 were obtained.
- the viscosity was appropriate, and the migration resistance was also good.
- the composition is shown in Table 8 and the results are shown in Table 9.
- a polyhedral silver powder a having at least six flat surfaces and a silver powder d obtained by pulverizing a polyhedral silver powder into a plate shape are mixed, and a polyester resin is used as a binder resin.
- a polyester resin is used as a binder resin.
- the migration resistance, heat resistance, and shear adhesive strength were also good, and the solid content could be increased with appropriate viscosity.
- the composition is shown in Table 8 and the results are shown in Table 9.
- the conductive paste of the present invention is suitable for a multilayer substrate application.
- the conductive paste described in Example 9 in Table 8 was screen-printed, and heated in an oven at 150 ° C, 30 ° C. By co-curing, a coplanar signal line with a characteristic impedance of 50 ⁇ and a width of 0.5 mm and a thickness of 30 ⁇ m was created. As a result of measuring the signal attenuation at 1 GHz, the same high-frequency characteristics as those of the copper foil circuit were obtained at 3 dBZcm. As described above, the conductive paste of the present invention has a small signal attenuation in a high-frequency region, generates noise 1, and can use energy efficiently. Therefore, the conductive paste is suitable as an electronic component using a high frequency.
- a conductive paste was prepared and evaluated in the same manner as in Example 7.
- Comparative Example 7 Comparative Example 8, Comparative Example 11 and Comparative Example 12, flaky silver powder was examined as a conductive filler, but the viscosity increased, resulting in a problem in workability and a decrease in migration resistance. .
- Comparative Example 10 The combination of flake silver powder and irregular-shaped silver powder was examined, but it was similarly high in viscosity and poor in migration resistance.
- Comparative Example 9 the blending of graphite and carbon black in the flake silver powder and the irregular granular silver powder was examined, but the viscosity was significantly increased. Migration resistance has also deteriorated.
- the composition is shown in Table 10 and the results are shown in Table 11.
- the conductive paste described in Comparative Example 8 in Table 10 was evaluated in the same manner as in Example 13. Met. In addition, a heat shock test was performed on a sample with good conductivity, and poor conductivity was found in 50 cycles or less.
- the conductive paste of the present invention comprises a binder resin, a polyhedral metal powder having at least six flat surfaces as a conductive filler, or a position at a diffraction angle of 38.5 ° in the X-ray diffraction reflection method.
- excellent by containing silver powder whose half width of peak appearing at 0.31 or less In addition, it exhibited excellent migration resistance, heat resistance, and adhesiveness, and because of its good dispersibility, its viscosity could be lowered despite its high solids concentration, thus achieving excellent workability.
- the conductive paste of the present invention can be used not only for printed circuits on flexible substrates such as rigid substrates, polyimide films, and PET films, but also for conductive adhesives, conductive coatings, and through materials for various electronic components. It is suitable for use as a conductive paste for holes and a conductive paste for build-up multilayer boards.
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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Manufacturing & Machinery (AREA)
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Abstract
Description
Claims
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Cited By (12)
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EP1947654A1 (en) * | 2005-09-29 | 2008-07-23 | Alpha Scientific, Corporation | Conductive powder and process for producing the same, conductive powder paste, and process for producing the conductive powder paste |
WO2011083813A1 (ja) * | 2010-01-08 | 2011-07-14 | 東洋紡績株式会社 | 導電性ペーストおよび金属薄膜 |
US20120119163A1 (en) * | 2010-11-17 | 2012-05-17 | E. I. Du Pont De Nemours And Company | Solderable polymer thick film silver electrode composition for use in thin-film photovoltaic cells and other applications |
JP2013101958A (ja) * | 2005-08-15 | 2013-05-23 | Merck Patent Gmbh | 外部回路への相互接続を有する光起電力電池 |
WO2014103569A1 (ja) * | 2012-12-25 | 2014-07-03 | 住友金属鉱山株式会社 | 導電性接着剤組成物及びそれを用いた電子素子 |
JP2015181207A (ja) * | 2012-07-20 | 2015-10-15 | 東洋紡株式会社 | レーザーエッチング加工用導電性ペースト、導電性薄膜および導電性積層体 |
JP2016521304A (ja) * | 2013-04-17 | 2016-07-21 | エイブルスティック・(シャンハイ)・リミテッドAblestik(Shanghai)Ltd. | 導電性インク |
WO2017057201A1 (ja) * | 2015-09-30 | 2017-04-06 | Dowaエレクトロニクス株式会社 | 導電性ペースト及び導電膜 |
JP2017069175A (ja) * | 2015-09-30 | 2017-04-06 | Dowaエレクトロニクス株式会社 | 導電性ペースト及び導電膜 |
KR101786722B1 (ko) | 2010-07-13 | 2017-10-18 | 소에이 가가쿠 고교 가부시키가이샤 | 도전성 페이스트 |
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Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0620515A (ja) * | 1992-06-30 | 1994-01-28 | Alps Electric Co Ltd | 合金粉末、該合金粉末を用いた分散型導電体および合金粉末の製造方法 |
JPH09111317A (ja) * | 1995-10-16 | 1997-04-28 | Tanaka Kikinzoku Kogyo Kk | 銀微粉末の製造方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3429985B2 (ja) * | 1997-10-02 | 2003-07-28 | 三井金属鉱業株式会社 | 六角板状結晶銀粒子からなる銀粉の製造方法 |
JP4012961B2 (ja) * | 1998-06-10 | 2007-11-28 | Dowaエレクトロニクス株式会社 | 板状銅粉の製法 |
JP2000001706A (ja) * | 1998-06-17 | 2000-01-07 | Tanaka Kikinzoku Kogyo Kk | 高結晶体銀粒子及びその製造方法ならびに高結晶体銀粒子からなる導体ペースト |
JP2001226596A (ja) * | 2000-02-14 | 2001-08-21 | Sumitomo Bakelite Co Ltd | 導電性樹脂ペースト及びこれを用いて製造された半導体装置 |
-
2004
- 2004-10-25 JP JP2005509260A patent/JPWO2005041213A1/ja active Pending
- 2004-10-25 WO PCT/JP2004/015776 patent/WO2005041213A1/ja active Application Filing
- 2004-10-26 TW TW093132354A patent/TW200519969A/zh unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0620515A (ja) * | 1992-06-30 | 1994-01-28 | Alps Electric Co Ltd | 合金粉末、該合金粉末を用いた分散型導電体および合金粉末の製造方法 |
JPH09111317A (ja) * | 1995-10-16 | 1997-04-28 | Tanaka Kikinzoku Kogyo Kk | 銀微粉末の製造方法 |
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US9011726B2 (en) | 2005-09-29 | 2015-04-21 | Alpha Scientific, Corporation | Electrically conductive powder and production thereof, paste of electrically conductive powder and production of paste of electrically conductive powder |
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