WO1988000573A1 - Particules spheriques de corindon, leur procede de production et compositon de plastique ou de caoutchouc a conductivite thermique elevee les contenant - Google Patents

Particules spheriques de corindon, leur procede de production et compositon de plastique ou de caoutchouc a conductivite thermique elevee les contenant Download PDF

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Publication number
WO1988000573A1
WO1988000573A1 PCT/JP1987/000508 JP8700508W WO8800573A1 WO 1988000573 A1 WO1988000573 A1 WO 1988000573A1 JP 8700508 W JP8700508 W JP 8700508W WO 8800573 A1 WO8800573 A1 WO 8800573A1
Authority
WO
WIPO (PCT)
Prior art keywords
alumina
particles
spherical
particle size
average particle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP1987/000508
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
Yukio Oda
Jun Ogawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Resonac Holdings Corp
Original Assignee
Showa Denko KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Showa Denko KK filed Critical Showa Denko KK
Priority to DE8787904570A priority Critical patent/DE3786249D1/de
Publication of WO1988000573A1 publication Critical patent/WO1988000573A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/021—After-treatment of oxides or hydroxides
    • 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
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/16—Solid spheres
    • C08K7/18—Solid spheres inorganic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/002—Inhomogeneous material in general
    • H01B3/006—Other inhomogeneous material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
    • H01B3/10—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances metallic oxides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/01—Particle morphology depicted by an image
    • C01P2004/03—Particle morphology depicted by an image obtained by SEM
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/01—Particle morphology depicted by an image
    • C01P2004/04—Particle morphology depicted by an image obtained by TEM, STEM, STM or AFM
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/30—Particle morphology extending in three dimensions
    • C01P2004/32—Spheres
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/51—Particles with a specific particle size distribution
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/10—Solid density
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/12—Surface area
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/22—Rheological behaviour as dispersion, e.g. viscosity, sedimentation stability
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/32—Thermal properties
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/44—Alpha, beta or gamma radiation related properties
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001—Technical content checked by a classifier
    • H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Definitions

  • the shape of alumina particles is desired to be round and spherical without cutting wedge.
  • a so-called thermal spraying method is known, in which the alumina of the Bayer method is injected into a high-temperature plasma or oxyhydrogen flame, melted, and rapidly cooled to form a sphere.
  • this method is, NetsuHara unit is rather large, just not economical force ,, resulting alumina is o - A 2 0 3 (co-random) is the main component of it, et al, ⁇ 5 - A SL 2 0 3 and Ru customary der that contains as an auxiliary component.
  • the coexistence of these subcomponents is not preferable because it causes the thermal conductivity of alumina to decrease.
  • the random particles according to the present invention (Examples 1 and 2) have an average particle size of 16.0 / ⁇ and a maximum particle size of 50 (Table 1). As shown, it was obtained as a rounded spherical corundum particle with a size of 5 to 50. On the other hand, the samples of Comparative Examples 1 and 2 did not show any change in shape before and after the heat treatment, and were found to be irregularly shaped particles having high writting wedges.
  • Table 2 and Comparative Example 3 show the results of samples obtained in the same manner as in Example 5 except that no chemicals (aluminum anhydrous fluoride and boric acid) were added in Example 5.
  • Example 10 instead of the spherical column, a crystalline silica having an average particle diameter of 9.7 and a maximum particle diameter of 48 (Crystallite A-1 manufactured by Tatsumori) or 350 parts (70% by weight percentage) of molten silica (Fuse Rex E-1 made by Tatsumori) with an average particle diameter of 12.1 and a maximum particle diameter of 48 Composition The product was obtained and evaluated in the same manner as in Example 10.
  • the added alumina is fine-grained alumina B, and the ratio is 0.01 to 0.20. It has a small amount of resin burrs and has high fluidity as indicated by the spiral tip.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Ceramic Engineering (AREA)
  • Medicinal Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Dispersion Chemistry (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
PCT/JP1987/000508 1986-07-14 1987-07-14 Particules spheriques de corindon, leur procede de production et compositon de plastique ou de caoutchouc a conductivite thermique elevee les contenant Ceased WO1988000573A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8787904570A DE3786249D1 (de) 1986-07-14 1987-07-14 Kugelfoermige korundkoerper, verfahren zu ihrer herstellung und sie enthaltende hochwaermeleitende gummi- und kunststoffzusammensetzungen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP61/163719 1986-07-14
JP61163719A JPS6320340A (ja) 1986-07-14 1986-07-14 高熱伝導性ゴム・プラスチック組成物

Publications (1)

Publication Number Publication Date
WO1988000573A1 true WO1988000573A1 (fr) 1988-01-28

Family

ID=15779350

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1987/000508 Ceased WO1988000573A1 (fr) 1986-07-14 1987-07-14 Particules spheriques de corindon, leur procede de production et compositon de plastique ou de caoutchouc a conductivite thermique elevee les contenant

Country Status (4)

Country Link
EP (1) EP0276321B1 (enExample)
JP (1) JPS6320340A (enExample)
DE (2) DE3786249D1 (enExample)
WO (1) WO1988000573A1 (enExample)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2694839A1 (fr) * 1992-08-14 1994-02-18 Protex Manuf Prod Chimiq Utilisation de corindon brun comme charge thermoconductrice dans des compositions polymères, en particulier des compositions d'enrobage électriquement isolantes.
DE69718034T2 (de) * 1996-10-16 2003-09-25 Kureha Kagaku Kogyo K.K., Tokio/Tokyo Polyphenylensulfid Harzzusammensetzung
JP3727450B2 (ja) * 1997-10-09 2005-12-14 ジーイー東芝シリコーン株式会社 定着ロール
JP2002146187A (ja) * 2000-11-08 2002-05-22 Toray Ind Inc ポリフェニレンスルフィド樹脂組成物
JP2002348115A (ja) * 2001-05-30 2002-12-04 Showa Denko Kk アルミナ粒子及びその製造方法
JP4920141B2 (ja) * 2001-05-30 2012-04-18 昭和電工株式会社 アルミナ粒子及びその製造方法
JP3807995B2 (ja) 2002-03-05 2006-08-09 ポリマテック株式会社 熱伝導性シート
EP1633678B1 (en) * 2003-06-12 2017-05-17 Showa Denko K.K. Method for producing particulate alumina and composition containing particulate alumina
JP2005022963A (ja) * 2003-06-12 2005-01-27 Showa Denko Kk アルミナ粒の製造方法及び組成物
US20090188701A1 (en) * 2004-01-08 2009-07-30 Hiroshi Tsuzuki Inorganic powder, resin composition filled with the powder and use thereof
EP1727768A1 (en) * 2004-03-15 2006-12-06 Showa Denko K.K. Roundish fused alumina particles, production process thereof, and resin composition containing the particles.
TW200540116A (en) * 2004-03-16 2005-12-16 Sumitomo Chemical Co Method for producing an α-alumina powder
JP4932148B2 (ja) * 2004-10-18 2012-05-16 株式会社フジミインコーポレーテッド 酸化アルミニウム粉末の製造法
DE102005045180B4 (de) * 2005-09-21 2007-11-15 Center For Abrasives And Refractories Research & Development C.A.R.R.D. Gmbh Kugelförmige Korundkörner auf Basis von geschmolzenem Aluminiumoxid sowie ein Verfahren zu ihrer Herstellung
JP5227801B2 (ja) * 2006-10-31 2013-07-03 電気化学工業株式会社 アルミナ粉末及びその製造方法、並びにその用途
JP5224350B2 (ja) * 2008-08-11 2013-07-03 古河電気工業株式会社 非架橋樹脂組成物およびそれを用いた熱性能に優れる熱伝導性成形体
JP2013122029A (ja) * 2011-12-12 2013-06-20 Sumitomo Bakelite Co Ltd フィラー、絶縁層形成用組成物、絶縁層形成用フィルムおよび基板
CN115279695B (zh) * 2020-03-16 2024-07-05 三菱综合材料株式会社 无机填料粉末、导热性高分子组合物及无机填料粉末的制造方法
JP2022126266A (ja) * 2021-02-18 2022-08-30 三菱マテリアル株式会社 無機フィラー粉末、熱伝導性高分子組成物、無機フィラー粉末の製造方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58181725A (ja) * 1982-03-29 1983-10-24 スイス・アルミニウム・リミテツド 粗い結晶性アルミナの製造方法
JPS62191420A (ja) * 1986-02-17 1987-08-21 Showa Alum Ind Kk 球状コランダム粒子の製造方法
JPH0626505B2 (ja) * 1988-06-16 1994-04-13 株式会社ヤクルト本社 ケフィア様乳製品の製造法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5822055B2 (ja) * 1979-06-15 1983-05-06 昭和電工株式会社 高分子物質用配合剤
JPS6026505B2 (ja) * 1982-09-30 1985-06-24 新日本製鐵株式会社 無機充填樹脂組成物の製造方法
JPS5991137A (ja) * 1982-11-15 1984-05-25 Matsushita Electric Works Ltd 樹脂組成物

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58181725A (ja) * 1982-03-29 1983-10-24 スイス・アルミニウム・リミテツド 粗い結晶性アルミナの製造方法
JPS62191420A (ja) * 1986-02-17 1987-08-21 Showa Alum Ind Kk 球状コランダム粒子の製造方法
JPH0626505B2 (ja) * 1988-06-16 1994-04-13 株式会社ヤクルト本社 ケフィア様乳製品の製造法

Also Published As

Publication number Publication date
EP0276321A4 (en) 1989-02-16
JPS6320340A (ja) 1988-01-28
EP0276321A1 (en) 1988-08-03
DE3786249D1 (de) 1993-07-22
DE3786249T2 (de) 1993-10-07
JPH048465B2 (enExample) 1992-02-17
DE3786249T4 (enExample) 1994-02-10
EP0276321B1 (en) 1993-06-16

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