A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PARTICLE GROUP, POWDER COMPOSITION, SOLID COMPOSITION, LIQUID COMPOSITION, AND MOLDED BODY
To provide a particle group excellent in thermal expansion-controlling properties and further excellent in electrical insulation properties.SOLUTION: A particle group comprises a plurality of coated particles 10, each of which has a core part 1 that is composed of a first inorganic compound that contains a metal/semimetal element P, and a shell part 2 that is composed of a second inorganic compound that contains a metal/semimetal element Q, the shell part covering at least a part of the surface of the core part. The first inorganic compound satisfies the following requirement 1, while the coated particles satisfy the following requirement 2 and requirement 3. Requirement 1: |dA(T)/dT| is 10 ppm/°C or more at least at one temperature T1 within the range of from -200°C to 1,200°C; and A is a value obtained from (lattice constant of a-axis of crystal in the first inorganic compound)/(lattice constant of c-axis of crystal in the first inorganic compound). Requirement 2: a ratio of the number of atoms of the metal/semimetal element Q contained in the shell part to the number of atoms of the metal/semimetal element P contained in the core part is from 45 to 300 as determined by XPS measurement of surfaces of the coated particles. Requirement 3: an average particle diameter of the coated particles is from 0.1 μm to 100 μm.SELECTED DRAWING: Figure 1
【課題】熱膨張制御特性に優れるとともに、電気絶縁性に優れる粒子群を提供する。【解決手段】粒子群は、金属／半金属元素Ｐを含む第一の無機化合物から成るコア部１、及び、金属／半金属元素Ｑを含む第二の無機化合物から成り、コア部の表面の少なくとも一部を覆うシェル部２を有する被覆粒子１０を複数含む。第一の無機化合物は要件１を満たし、被覆粒子は要件２及び要件３を満たす。要件１：−２００〜１２００℃における少なくとも一つの温度Ｔ１で｜ｄＡ（Ｔ）／ｄＴ｜が１０ｐｐｍ／℃以上である。Ａは（第一の無機化合物中の結晶のａ軸の格子定数）／（第一の無機化合物中の結晶のｃ軸の格子定数）である。要件２：被覆粒子の表面のＸＰＳ測定において、コア部に含まれる金属／半金属元素Ｐの原子数に対する、シェル部に含まれる金属／半金属元素Ｑの原子数の比が、４５〜３００である。要件３：被覆粒子の平均粒子径が０．１〜１００μｍである。【選択図】図１
PARTICLE GROUP, POWDER COMPOSITION, SOLID COMPOSITION, LIQUID COMPOSITION, AND MOLDED BODY
To provide a particle group excellent in thermal expansion-controlling properties and further excellent in electrical insulation properties.SOLUTION: A particle group comprises a plurality of coated particles 10, each of which has a core part 1 that is composed of a first inorganic compound that contains a metal/semimetal element P, and a shell part 2 that is composed of a second inorganic compound that contains a metal/semimetal element Q, the shell part covering at least a part of the surface of the core part. The first inorganic compound satisfies the following requirement 1, while the coated particles satisfy the following requirement 2 and requirement 3. Requirement 1: |dA(T)/dT| is 10 ppm/°C or more at least at one temperature T1 within the range of from -200°C to 1,200°C; and A is a value obtained from (lattice constant of a-axis of crystal in the first inorganic compound)/(lattice constant of c-axis of crystal in the first inorganic compound). Requirement 2: a ratio of the number of atoms of the metal/semimetal element Q contained in the shell part to the number of atoms of the metal/semimetal element P contained in the core part is from 45 to 300 as determined by XPS measurement of surfaces of the coated particles. Requirement 3: an average particle diameter of the coated particles is from 0.1 μm to 100 μm.SELECTED DRAWING: Figure 1
【課題】熱膨張制御特性に優れるとともに、電気絶縁性に優れる粒子群を提供する。【解決手段】粒子群は、金属／半金属元素Ｐを含む第一の無機化合物から成るコア部１、及び、金属／半金属元素Ｑを含む第二の無機化合物から成り、コア部の表面の少なくとも一部を覆うシェル部２を有する被覆粒子１０を複数含む。第一の無機化合物は要件１を満たし、被覆粒子は要件２及び要件３を満たす。要件１：−２００〜１２００℃における少なくとも一つの温度Ｔ１で｜ｄＡ（Ｔ）／ｄＴ｜が１０ｐｐｍ／℃以上である。Ａは（第一の無機化合物中の結晶のａ軸の格子定数）／（第一の無機化合物中の結晶のｃ軸の格子定数）である。要件２：被覆粒子の表面のＸＰＳ測定において、コア部に含まれる金属／半金属元素Ｐの原子数に対する、シェル部に含まれる金属／半金属元素Ｑの原子数の比が、４５〜３００である。要件３：被覆粒子の平均粒子径が０．１〜１００μｍである。【選択図】図１
PARTICLE GROUP, POWDER COMPOSITION, SOLID COMPOSITION, LIQUID COMPOSITION, AND MOLDED BODY
粒子群、粉体組成物、固体組成物、液体組成物、及び、成形体
SASAKI SHINICHI (author) / DOI ATSUNORI (author) / ARIMURA TAKASHI (author) / SHIMANO SATORU (author)
2021-11-04
Patent
Electronic Resource
Japanese
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