TW200809876A - Conductive particle, conductive powder consisting thereof, process for producing the same, and conductive ink obtained using the conductive powder - Google Patents

Abstract

A conductive powder that has hiding capability while being of bright color and is a filler which in the use as conductive ink or conductive paint, even when the dispersion time is prolonged or when the dispersion operation is repeated, ensures a low deterioration in the surface resistance of coating film obtained. Accordingly, the core material and the conductive layer consist of the common material of TiO2. The TiO2 layer constructing the conductive layer is doped with Nb to thereby not only impart conductivity but also form a Nb diffusion layer, so that there is produced a conductive particle wherein the phenomenon of peel between the core material and the conductive layer is suppressed. From the conductive particle, there is produced a conductive powder.

Description

200809876 IX. Description of the Invention: [Technical Field of the Invention] The present invention relates to an electro-powder composed of conductive particles and the electroconductive particles, and a method of utilizing the electric powder, the potential 4, and the #1, and the method and utilization thereof The electric current produced by the conductive powder is particularly useful in the case of using titanium oxide in the case of conductive particles = conductive ink, etc., even if a long dispersion time is required: Conductive particles in which the resistance of the film fluctuates. [Prior Art] In the field of plastic film or coating, in the case of applications requiring shielding properties, titanium oxide or the like is used as a filler. Electrical properties = carbon black (4) =:==_ Only in the necessary parts to promote. Use (four) good 'and look forward to future use, however, 'riding with conductive black, which makes time... $ and use slave black... then the film becomes raw material The representative of the oxidized ## color concealer used in the electrical conductivity 1 , ·, right using this titanium oxide as a filler, there will be some disadvantages in (4) health. Therefore, as a technology to change the shape of the i- Document 1 (Guang 10-Π7729号Report) Zhongfu·, /, patent declaration special open alumina, etc. as A*卩* mother, cerium oxide, titanium oxide, emulsified material as raw material platelets (four) needle-like substrate, and / or group to do Conductive pigments of miscellaneous _, ^ hammer. Others: tin oxide or dioxygen as a conductive layer, the inventors have completed the application to 2213-8940-PF; Ahddub 5 200809876 • titanium oxide as a heart material and coated oxidation Conductive particles of tin. % tj» ^ ^ ^ a In the invention of the application, by using tin oxide on the surface of the core material, the electric a ' remains bright and has shielding and conductivity. The conductive film and the coating film obtained by using the conductive particles exhibit a surface resistance of 1 · 0x10 Ω / □. However, when the conductive particles are used in a paint or the like, a uniform mixed state is desired, or Strong mixing, or long-time mixing with repeated stirring, then the resulting conductivity _ ', the resistance value originally obtained should rise, and there is a problem that the expected effect cannot be obtained. Used to suppress electricity Value change of conductive ink or conductive coating of conductive powder 'there have their needs.

Therefore, the applicants once again studied conductive particles and studied it with enthusiasm, and found that the rise in the resistance value was caused by the peeling phenomenon between the core materials: the conductive layers. In other words, the (four) layer is easily peeled off from the core material, and by forming the conductive layer with the same thickness, the conductive film obtained by the conductivity is stable and the conductivity can be ensured: the grain is further The conductive film of the present invention which is dispersed and smoothed by adjusting the composition of the conductive layer and having an energy value 'is also a granular shape. The electric particles have the following characteristics: the conductive film obtained by the entanglement is excellent in electrical resistance, and the conductive powder composed of a small number of aggregates is easily obtained, the manufacturing method thereof, and the use of the derivative 2213-8940-PF ; Conductive ink made by Ahddub 6 200809876 is explained. The conductive particles according to the present invention: the conductive particles of the surface of the core material particles and having /x bright, and the granular guide of the hundred V private layer are: the core material particles f # τ 〃子, the characteristic of the ancestors The sub-system 102 is on the conductive layer of the granules. The coating surface has conductive particles to which the ruthenium is incorporated in the present invention, and 2 η π 〜 15 nm is preferable. J describes the thickness of the electrical layer. (5) The conductive layer contains T T 右 right and the conductive particles make Qiu

When Ti〇2菫 is set to 100% by weight, it is preferable that the conductivity of the present invention is relatively high. The conductive powder composed of the conductive particles is characterized in that the primary particle diameter of the bulk electrical particles is G. G 5 core 1, m.

The median diameter D of the conductive powder is preferred. The specific surface area of the ratio of the above-mentioned conductive powders of the above-mentioned conductive powder is preferably in the range of ImVg to 22 mVg. The ratio of the specific surface area of the core material _ γ butyl to the specific surface area of the obtained conductive particles in the conductive powder [(the specific surface area of the specific surface material particles of the ν electric particles) is 1.0~ 2.0 is better. The method for producing a conductive powder according to the present invention is a method for producing a conductive powder, characterized in that the oyster has the following steps. A: Disperse the Ti〇2 powder in water. w"1〇2 suspension step B: A step of adding a titanium salt and a cerium salt to the above 71 〇 2 suspension and dissolving it to obtain a reaction liquid. 2213~8940~PF; Ahddub 7 200809876 c The reaction liquid is prepared in a neutral to the range of the test, and a step of containing a suspension of Ti〇2 particles coated with a ruthenium-doped Ti〇2 precursor is obtained. D: The solid suspension is subjected to solid-liquid separation, and the Ti (h precursor-coated Ti〇2 powder) doped with cerium is dried to obtain Ti (h precursor-coated Ti〇2). Step of the powder cake E: A step of pulverizing the Ti〇2 powder cake coated with the (tetra) η〇2 precursor by dry curing and then pulverizing the mixture to obtain a conductive powder.

The particle size of the Ti〇2 powder used in the above step A is 〇5#m~1.0/^, and the concentration of Ti〇2 in the suspension is preferably 2〇g/L to 5〇〇g/L. The titanium salt in the above step B is one or more selected from the group consisting of titanium titanate, titanium tetrachloride titanate and titanium tetraoxide of a water-soluble titanium salt, and the titanium concentration is 1% by weight to 3 〇% by weight is preferred. Antimony pentachloride, antimony pentafluoride, pentadium iodide or higher 'The sharp concentration is 0.02 mol. The barium salt of the above step B is one or two selected from the plutonium / L / 0 · 5 mol / L is preferred.

In the neutral to alkaline range of the adjusted H p series 7 to 11 in the above step C, one or two or more selected from the group consisting of NaOH, Κ0Η, Na2C〇3, and present-mountain wind are used for pH adjustment. It is better. The calcination environment in the above step E is preferably 80%. The conductive ink of the present invention: β is a conductive ink of the present invention, and the conductive powder is used as a pigment. The conductive film of the present invention is obtained by using the conductive ink described above in relation to the conductive film of the present invention. 2213-8940-PF; Ahddub 8 200809876 Effect of the invention: The conductive particles of the fish body use τ1〇2 as a common raw material of the anger material and the conductive layer, thereby making the boundary between the core material and the conductive layer appear Clear! Therefore, peeling between the core material and the conductive layer can be prevented. Further, by forming the V-layer of the same thickness of the conductive layer, the conductive film which is transferred by the conductive paint using such conductive particles exhibits stable conductivity. Moreover, the surface resistance value can be made into the target range by incorporating the positive electrode with 1'. Further, since the conductive particles are recorded, the dispersibility in the coating material is quite excellent. ” Because of less political aggregation, a smooth conductive film can be obtained. The coating film or the plastic which is used as the filler by using the conductive powder thus produced maintains a bright color and has an electrical conductivity, and the conductivity of the towel is set to an optimum range depending on the application.

[Embodiment] The conductive particles of the present invention are related to the conductive particles of the present invention: the particulate conductive particles having a conductive layer on the surface of the core material particles, and the core material particles, Ti〇2, On the surface of the particle, there is a Ti^ conductive layer doped with germanium. With regard to this patent application, the use of ruthenium as a material for doping Ti 2 can provide good conductivity, but the form of ruthenium present in the conductive layer is not clear. The giant oxides of the elements which are close to the ruthenium on the periodic table are also known to exhibit good electrical conductivity as well as the oxides of ruthenium. Therefore, it is generally considered that the use of a group instead of 铌 can also achieve the same effect. And in the present invention, since granular τ i 〇 2 is used as the core material, 2213-8940-PF; Ahddub 9 200809876

The conductive particles are also granulated, because the conductive layer is formed by the inclusion of lanthanum Ti〇2, so the interface between the conductive layer and the core particles is unclear =: the characteristic is -° The W system in which the interface between the conductive layer and the & material is unclear, and the use of the common Ti〇2 in the core material and the conductive layer is described in detail, although it is in the atmosphere. The precursor coated with the other particles is calcined to obtain conductive particles, but the calcination is changed to a sintered state of Τ1〇2 by baking, and the adhesion between the core material and the conductive layer becomes strong, and the interface is strong. Unknown reasons. Therefore, it is generally considered that the argon-forming enthalpy of the formation of the conductive layer is performed by sharply diffusing on the side of the T i 〇 2 of the core material to complete the 电V electrical layer from the φ 甶 电 to the core layer. Concentration gradient. In the conductive particles according to the present invention, the thickness of the conductive layer is preferably 2 nm to 15 nm, and the content of the conductive layer is preferably 〇〇. 〇〇, 〇〇 5 wt% Here, although the thickness of the conductive layer, the conductive particles of the present invention, because the interface between the core material and the conductive layer is unclear, the quality and use of the conductivity The core material forming the conductive particles was calculated using the specific surface area by using the mass of the Τι 2 and the amount of enthalpy. The thickness and composition of the conductive layer are to be formed by the last formed conductive film. However, due to the general requirements: the surface resistance value is 丨·. Buy / □ around ~ "purchase / □ around, so: the above range is better. And the ease of manufacture, etc. in the consideration of the layer: the thickness of the layer is better; the sharp content is the conductive particles When the amount of ==102 is set to 1〇0% by weight, then the weight is 22l3-8940-PF; Ahddub 10 200809876 The guide ################################################################################### In the conductive powder system of the present invention, the conductive powder composed of the above-mentioned conductive piles

The primary particle diameter of the conductive particles is 俦0 R and 杬 is 0.05#m~i.0/^. The use of the conductive powder of the present invention is to impart conductivity to an organic insulator such as a conductive ink, such as a paint or a plastic film. If this is the purpose, both the hook-and-scatter property and the conductivity can coexist. Embodiments are required. Further, when the shape of the powder is studied by the characteristics, it is preferable to form the scaly sheet as disclosed in Patent Document 1 for the conductivity. However, due to the lack of uniform dispersion of the tabs, the strong dispersion treatment based on strong agitation or long-time agitation may cause the peeling of the v-electrode layer or the destruction of the flakes themselves, and the result is used to obtain The design of the expected feature steps is difficult. "Men and in order to improve the dispersibility, the particles are made into a spherical shape, which is similar to the sphere of the sphere and the spherical isotropic isotropic. On the other hand, when the ink or the coating material in which the scaly-like one-piece or needle-shaped particles having a non-granular shape is dispersed is blended into the same content or in the shape of the inside, the viscosity is increased, and it is difficult to know the uniformity of the coating film. . &# i ^ , Gan, and thus the point of reduction, the shape of the conductive particles is granular, and its primary particle size is larger than that of 〇.〇5em, and, as is the case of Bahanan, the conductive particles = Diameter: Exceeding U(four)', no matter how the shape is granular, the surface of the conductive film: surface is reduced, and the gap between the particles becomes large. Even in order to obtain, the thickness of the coating film must be considered. Also ¥ The primary particle size of the pen particles is U heart 〇. ‘More. Further, the median diameter m of the conductive powder. Preferably, the volume is based on the following jaws. Can't neglect the adhesion of ink or paint as mentioned above. 11 2213-8940-PF; Ahddub 200809876 This is also: not only the particle size range, but also must be considered in the opinion of the grain pinch. It is for the management of the thickness of the coating film. Further, for the ink application, the median diameter is a reference system, and the specific surface area of the electro-mechanical powder is preferably im2/g to 22 m2/g. For the use of #Tl°2, the raw material having a large specific surface area is used. Therefore, in the production method of the present invention, the conductive layer is formed by using a liquid phase. The properties of the obtained conductive particles are affected by the particle size or surface state of the core material. Therefore, it is preferable that the conductive particles of = and the conductive powder exhibit a stable range of 1: t g to 22 mVg. The specific surface area..., ～17 m/g ′ is more preferably in the range of 7 mVg to i5 mVg. Describing the conductive powder, the specific surface area of the core particle conductive particles and the obtained ^ ) / (^ t t ( [(specific surface of the conductive particles: specific surface area of the two particles)] Preferably, as described above, the manufacturing method according to the present invention is applied. Therefore, if the surface is observed microscopically, there is a system, and the liquid is opposite to the P-type having a concave-convex shape, t is = Conductivity, or need to maintain a smooth surface as much as possible ^ u 'The ratio of the specific surface area of the core particles to the obtained conductive particles [(specific surface area of conductive particles) / (specific surface area of core particles) In the case of the conductive powder of the present invention, the method for producing the conductive powder of the present invention has the following steps (4). The T i 〇 2 powder is dispersed in water τ to obtain a Ti 〇 2 suspension 2213-8940-PF; Ahddub 12 200809876, the enthalpy / enthalpy is to eliminate the aggregation of the core material, and to uniformly disperse. Therefore, the particle size of the Ti〇2 powder used here is 0· 05# m~:L 〇// m Although floating: the concentration of Ti〇2 in the liquid is preferably 20g/L~500g/L. The quality of the formed conductive reeds is not small compared to the quality of the core material, but if Considering that the conductive layer is formed on the outer layer of the core material having a larger specific surface area, it is added as an increase in the particle size.

The necessity of the mountain test is very small, and the particles of the core material prepared here can only be roughly the same as the particle size of the conductive particles. Therefore, the particle/core of the core material can substantially coincide with the particle diameter of the intended conductive particle. The consumption of the particle size is determined in consideration of the viscosity of the ink or the like obtained by using the conductive powder described above and the shielding property of the coating film. Moreover, the concentration of Ti〇2 in the suspension (water/density) is mainly considered in consideration of the properties of the productive and conductive particles, for example, if the concentration of the right slurry is too high, the particles are easily condensed to cause division. The property is poor; if the slurry concentration is too low, the adhesion between the core material and the conductive layer tends to decrease. From this point of view, the illusion of the slurry concentration depends on "5 〇〇 g / L 乂 k, a better upper limit concentration of 3 〇〇 g / L.艮(5)2〇Μ is also a slurry concentration that can maintain industrial productivity. / Μ 到 到 to the day qg 』... One heart q team τ 刀 刀 铱 铱 salt salt ' salt and dissolved to prepare the reaction liquid step, the film thickness and sharp incorporation of the conductive film formed on the surface of the core material Steps to be set... In terms of the titanium salt, the titanium salt of titanium sulfate, titanium tetrachloride, titanium sulfate, titanium tetrafluoride, etc. One or two or more kinds of the selected ones, and the titanium concentration is adjusted to 1% by weight to 3 〇. / Rabbit 钤 重 重 /. It is better. The amount of the titanium salt, relative to the concentration of the slurry, is preferably managed in a weight % in order to achieve a 丨-1 violation. The titanium salt used herein may be any type if it is water-soluble, and may be any type, 2213-8940-PF; Ahddub 13 200809876 may use a sulfuric acid (tetra), titanium oxide, titanium sulfate concentration system to coat the surface of the core material. The thickness of the formed conductive layer is set to an optimum yield. That is, in the case where a thick conductive layer is formed, a high concentration of a thin conductive layer can be adjusted to a low concentration. Human form Selecting 2 species or more, 峨 can be adjusted into two ^

'ear. The cerium salt used herein may be any water-soluble salt of the same type as the titanium salt, and may be used as a pentachloride, a lanthanum pentafluoride or a five-hardening, and a sharp concentration is added to the conductive layer formed on the surface of the core material. The amount of people is set in the wave of Tian Shi. That is to say, in the case of a large amount of people, it can be adjusted to a high concentration, and in the case of a small amount of incorporation, it can be adjusted to a low concentration. - Step C is to complete the reaction surface prepared in step 于 to neutral ~ alkaline: surrounding 'precipitate the incorporation of sharp Ti 〇 2 precursor (mainly oxychloride), and serve to contain bismuth The step of suspending the ruthenium particles coated with the Ti〇2 precursor is carried out on the surface of Ti〇2 of the core material to form a uniform precipitate of the ruthenium-doped Ti〇2 precursor. Specifically, in order to adjust the adjusted enthalpy to a neutral-to-experimental range of 7 to 11, it is possible to adjust by using one or two or more types selected from K0H, Na2C〇3, or cardiac strength test. pH. Since this step becomes a reaction of the form of the suspension, it is preferred to add a stirring operation. In this step C, attention is paid to the time required to complete the addition of the base, and specifically, it is set to 1. Minutes ~ 90 minutes are preferred. The embodiment described later is required; 〇 minutes. For example, as a concise example, the conditions of step β and step c are carried out, that is, in the suspension which is dispersed in the core material, and the salt or strontium salt in the reaction liquid is added at the same time. 2213-8940-PF in contact with alkali; Ahddub 14 200809876 will produce spots, and it is difficult to form a Tl〇2 precursor of a uniform sentence. Further, when a base is added to the suspension in which the core material is dispersed, and then a salt or a cerium salt is added, the (four) precursor of the (four) layer formed on the surface of the core material forms a porous state and becomes a fragile substance. When a conductive powder is used for a conductive coating material, it becomes a coating material with poor conductivity. Step D is to perform solid-liquid separation on the suspension liquid of step f/jin, and dry the Ti()2| coated with the ruthenium-doped precursor of the ruthenium.

The step of obtaining the ruthenium powder coated with the sharp Tl〇2 precursor can be carried out by a general method of cleaning, and the ruthenium-doped TiG2 precursor-coated glutinous powder cake obtained in the step D is used. After the pulverization, the step of performing calcination in an atmosphere to obtain a conductive powder is a step of forming an oxide by forming a sharp T1〇2 precursor layer formed by the step Β. In this step, Rui was replaced by the next one, and the hair was expected to be 4 inches. For the pulverization of the powder, a pulverizing apparatus using a pressurization method can be used. In the dilemma of the division of the household voice, the invention is set to the hole::'. It is generally considered that the main component of the Ti〇2 precursor layer is hydrogen hydroxide. The heating-based dehydration reaction can exert a sufficient effect. Regarding the conductive ink system of the present embodiment, the electric ink system is used for the purpose of "the conductive powder is used as the pigment, and the viscosity is also dependent on: the appropriate modulation is obtained. The conductivity obtained here. The ink of the conductive ink is compared with the case of the powder, and the solid content of the conductive particles of the ink is better than that of the water: even if the thickness of the conductive film to be formed is the same, the organic solvent or the like is used for the environment. The effect is also reduced. 2213-8940^PF;Ahddub ^ 200809876 The use of the conductive powder of this u is not limited to conductive ink, and can also be used for the above-mentioned conductive paint or for the purpose of imparting conductivity to plastics. Although the examples and the comparative examples are shown below, the present invention is not limited by these examples, and the method for preparing the conductive quinone or V-encapsulated ink prepared by the examples and the comparative examples is as follows. The second embodiment is described separately from the vehicle, and the dispersion time of the conductive ink is

The results of the surface resistance data of the conductive film are shown in the i-th table. The f 1 map will be used to chart these data. The third embodiment discloses that a conductive film made of the conductive powder formed based on the present invention is used as the embodiment 1; and the comparative user uses tin oxide to form a conductive layer and uses the conductive layer. A conductive film made of the formed conductive powder was used as Comparative Example J. Table 1

[Preparation of conductive powder] 1 - Adjusting the titanium salt solution using the music product · Using titanium sulphate, adjust to 5% by weight as a titanium salt solution: Dissolve 5 g of pentachloride in 100 mL of concentrated hydrochloric acid Adjust the pH adjustment solution: 25 wt% aqueous solution of sodium hydroxide 2 · Formation of conductive layer 2213~8940-PF; Ahddub 16 200809876

- 100 g of Ti〇2 powder having a primary particle size of ^^^^ was added to 15 L of pure water to obtain a suspension in which Ti〇2 powder was dispersed. 4 〇〇g of a titanium salt solution and 2 〇ffi of a cerium salt solution were added to prepare a reaction liquid. The reaction solution prepared in this manner was heated to 6 (TC, and 350 mL of the pH adjustment solution was added over 7 minutes. The suspension obtained here was stirred for further 3 minutes, and then washed by a repulping method. Finally, the suction filter is used for suction filtration, and the solid component is separated and dried to obtain a pseudo-cured powder. _ 3. Formation of conductive powder Next, dry and pseudo-cured powder is used using a pressure mill. It is pulverized and fired in an atmosphere of 70 (TC) for an hour to obtain a conductive powder which forms a (10) conductive layer which is doped with lanthanum in the Ti〇2 powder. Evaluation of particle size · 0. 15 μ m (average of 50-point particle size of arbitrarily selected image by SEM-scanning electron microscope with magnification of 60, 〇〇〇) • Sample of 2〇〇mL Weigh the sample about 〇.lg in the container, mix 0·2g/L sodium hexametaphosphate i〇mL, add 9〇mL of pure water, and use ultrasonic dispersion machine [Japan Seiki (share) system us-3〇〇 τ] and disperse 〇 〇 minutes to prepare the sample suspension. Use (share) market manufacturing plant — 920. Particle size at a time when the cumulative volume of the sample suspension is 50% by laser diffraction scattering method} Specific surface area: core material 10·0 mVg, conductive powder system 11.6 m2/g ( Measured by the BET-Beauty method) L value: 96.9 {Measured by color difference measuring device [K〇NICA min〇lta 2213-8940-PF; Ahddub 17 200809876 ftOUUNGsC shares) (10)-35〇〇d] Hue) The thickness of the two underlying conductive layers was calculated by the following procedure. a) The mass of the coating film portion was determined from the mass of the obtained conductive powder and the mass of the core material used. b) The coating film thickness (conductive layer thickness: nm) was determined by dividing the coating film mass by the density of titanium oxide and dividing by the surface area of the above-mentioned core material. c) The amount of cerium incorporation is determined from the analytical value of cerium contained in the electrical powder. The result is that the thickness of the conductive layer is about 8 nm, and the mass thickness of the conductive layer is 25% by weight with respect to the total amount of T1O2 of the conductive particles, and the mass thickness of the conductive layer is 25% by weight. When the weight is 5%, the enthalpy is 2% by weight, and when the amount of the conductive layer is 1% by weight, the amount of cerium is 8% by weight. [Preparation of Conductive Ink] 1. Add conductive powder 74ig and acrylic acid resin (MITSUBISHIRAY0NC0·,ltd.) to 6.41g of a container with a capacity of 5〇cc and use toluene. The butanol mixture was mixed as a solvent, and the content of the conductive particles after the formation of the conductive film was 7%. 2. Next, glass beads were added to the mixture, and the paint shaker was used for 1 hour, 2 hours, and 3 hours. The conductive ink 丨 to the conductive ink 5 were obtained by dispersion treatment in an hour, 4 hours, and 5 hours. [Formation of Coating Film] The above-mentioned conductive ink 〖to conductive ink machine (# 10) was applied by a bar coating. A coating film was formed on the PET film. 2213-8940-PF; Ahddub 18 200809876 • [Evaluation Result] The coating film was dried in a hot air circulating oven set at 80 for 3 minutes, and then used [MITSUBISHI Chemical Co., Ltd.) IP was used to evaluate the surface % resistance. The results are shown in Table 1. The surface resistance value of the conductive film formed by using the conductive ink 5 having a dispersion time of 5 hours was used, but the dispersion time was 1 hour. The surface resistivity of the conductive film formed by the conductive ink i is 33 times, and the influence of the long-term dispersion time is small, which is good and good. θ " [Comparative Example 1] [Modulation of conductive powder] 1 - Formation of a conductive layer: 9 〇〇g of the same Ti〇2 powder as in the user of Example 1 was added to 5 L of pure water to obtain a suspension in which τi〇2 powder was dispersed. Sodium stannate was added to the suspension. 930 g of trihydrate salt was added, and pure water was added to make the total amount of liquid 8 L. The reaction liquid prepared in this manner was heated to 7 Torr < t, and after maintaining for 60 minutes, 20% sulfuric acid 1-6 L was added over 90 minutes. After the suspension obtained here was further stirred for 30 minutes, it was subjected to washing by a repulping method, and finally suction filtration was carried out using a suction filter, and the solid component was separated and dried to obtain a coating of Sn on Ti〇2. Powder of 2. 2. Formation of conductive powder Next, the dried and pseudo-cured powder was pulverized using a pressure mill, and the powder was in a reducing environment (2% H 2 - I) at 700 ° C. Roasting for 1 hour. 3 · Evaluation of conductive powder for the following items The same evaluation method as in Example 1. 2213-8940-pp; Ahddub 19 200809876 Particle size · · 〇 · 15μ m ^50 · 〇. 8 // m Specific surface area: core material 1〇〇mVg, conductive powder system 25 imVg L value: 85·3 /, - person, the thickness of the conductive layer is obtained by the following calculation. 曰A household weight of the electric powder and the core material used "& The thickness of the conductive layer was determined. The coating film thickness (the thickness of the conductive layer (10)) was determined by dividing the coating film by the density of tin oxide and dividing the surface area of the above-mentioned core material. 〇 The tin level in the conductive powder was converted to Sn 〇 2 mass to determine the mass thickness (%) of the Sn 〇 2 coating film portion. As a result, the thickness of the conductive layer was about 8 and the conductivity was 35% by weight with respect to (10) = the total amount of 1 () 2 i (10)% by weight of the green particles. i + [Preparation of Conductive Ink] The V-electric ink Γ to the conductive ink 5 were obtained by the same treatment as in Example 1 by the enthalpy dispersion treatment. [Formation of Coating Film] The same procedure as in Example 1 was carried out. [Evaluation Result] In the same manner as in the first embodiment, the evaluation of the mail-resistance was carried out. The results are as shown in Figure 1 and Table 1. When the ink 5 which is dispersed/, and the interval σ is 5 hours, the surface resistance value of the formed conductive film, η is increased to the surface resistance value of the conductive film formed by the ink enthalpy of the dispersion time. 120,000 times, 2213-8940-PF; Ahddub 20

200809876 is 5 times better than the ink obtained using the examples. The formed conductive film is about [

The comparison between the examples and the comparative examples was made with reference to the first table and various data, and the comparison between the examples obtained in the comparative examples and the comparative examples was made. + It is understood from the first table that the conductive ink obtained by using the conductive powder composed of the raw material of the first embodiment of the present invention is smaller than the dispersion time of the comparative example. In the case of the aggregate of the conductive particles of the present invention, the conductive powder using the conductive powder of the aggregate as a filler, the conductive ink, the conductive (four), and the conductive plastic are used.胄 ' Department - aspect has a clear color on the one hand, and has a stable conductivity. /, [Simple diagram of the diagram] The obtained diagram 1 shows the surface of the electro-film that changes the dispersion time of the conductive ink. Diagram of resistance. [Key component symbol description] 益〇0, Λ 2213-8940-PF; Ahddub 21

Claims (1)

200809876 X. Patent application scope: 1] A granular conductive particle layer having conductivity on the surface of the core material particle, characterized in that: the core material particle is Ti〇2 Ti〇2 conductive on the surface of the particle Floor. 2. If the scope of the patent application is 1st, the t-grain 4 The thickness of the conductive layer is 2 nm to 15, and the amount of the front Ti 2 is set to be the conductivity of the conductive layer described in the first aspect of the invention. When 100% of all of the conductive particles are reset, the system is 重量·5% by weight to 5% by weight. 4. A conductive powder, which is composed of the electro-chemical particles of the patent application, characterized in that: the primary particle diameter of the conductive particles is 0 05 #m~i (^m. 5. As stated in the patent scope The conductive powder according to Item 4, wherein the median-controlled D5G is 3/zm or less on a volume basis. 6_ The conductive powder according to claim 4, wherein the specific surface area is lm2/g~ The conductive powder according to the fourth aspect of the invention, wherein the ratio of the specific surface area of the core material particles to the specific surface area of the obtained conductive particles [(specific surface area of the conductive particles) is eight. The specific surface area of the core material particles is 1·0~2. 0 〇8 · A method for producing a conductive powder, which is manufactured as described in Patent Application No. 2213-8940-PF; Ahddub 22 200809876, item 4. The conductive powder is characterized by having the following steps a to e: A: a step of dispersing Τι〇2 powder in water to obtain (1) a suspension; B: adding a titanium salt and a cerium salt to the aforementioned suspension 2 And dissolving to obtain a reaction liquid; C: the reaction solution is prepared in a neutral range to obtain a suspension containing ruthenium-doped Ti〇2 precursor-coated Τι〇2 particles; D: solid-liquid separation is performed on the suspension And distilling the Ti〇2 powder coated with Nie: the coating coated Ti〇2 powder to obtain a Ti〇2 powder coated with a Ti〇2 precursor coated with ruthenium; and E· hunting The Ti〇2 powder coated with the dry and pseudo-cured ruthenium-doped Ti〇2 precursor is pulverized, and then subjected to calcination to obtain a conductive powder. The method for producing a conductive powder according to the item 8 of the invention, wherein the particle size of the Ti〇2 powder used in the above step is 〇. The i.Mm' suspension has a coffee concentration of 10. The method for producing a conductive powder according to claim 8 wherein the titanium salt in the step β is a sulfated salt of a water-soluble titanium salt. The type i or two or more types of titanium, titanium sulfate, and titanium tetrafluoride are selected to have a titanium concentration of 1% by weight to 30% by weight. η. The manufacturing method of the conductive powder according to the δth aspect of the patent application, wherein the bismuth salt in the step Β is selected from the group consisting of antimony pentachloride, antimony, and phlegm. Species or more than 2, the concentration of lanthanum is uu 2213-8940-pF; Ahddub 23 200809876 ear / L ~ 0. 5 m / L. 12. The method for producing a conductive powder according to the eighth aspect of the invention, wherein the modified city system [n=the neutral to alkaline range of the step c is used by Na〇H, K〇 One or two or more selected from H LU3 and gas are used to adjust the pH. 13. The method for producing a conductive powder as described in the patent application No. 8 n ^ + Bay, wherein in the case of the step-by-step type of conductive black water, you are in the atmosphere. For the soil water, a conductive powder such as φ 士 奎 奎 is used as the _ (four) material ^ described in the fourth item of the patent range. 15. A conductive film is obtained by applying a specific conductive ink. Said by the brothers 1 2213-8940-PF; Ahddub 24