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公开(公告)号：US20240124710A1
公开(公告)日：2024-04-18
申请号：US18264686
申请日：2021-11-19
发明人： Yuko KIMURA
CPC分类号： C08L83/08 , C08K3/22 , C08K2003/2227 , C08K2201/001
摘要： The present invention provides a thermally-conductive silicone composition including an organopolysiloxane as a base polymer and a thermally-conductive filler. The base polymer includes a fluorine-free organopolysiloxane and a fluorine-containing organopolysiloxane. The thermally-conductive silicone composition has been cured using an addition-curing catalyst. The ratio of the number of fluoro groups in constituent components of the base polymer to the total number of alkenyl groups bonded to silicon atoms in the constituent components of the base polymer is from 2.00 to 30.0.
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公开(公告)号：US11667825B2
公开(公告)日：2023-06-06
申请号：US16961882
申请日：2019-10-02
发明人： Hitoshi Shibuya
CPC分类号： C09K5/14 , C08J5/18 , C08K3/22 , C08K7/18 , C08K9/06 , C08J2383/04 , C08K2003/2227 , C08K2201/001 , C08K2201/005 , H01L23/3737 , H01L33/641
摘要： A thermally conductive sheet contains a matrix resin and thermally conductive particles. The content of the thermally conductive particles is 200 parts by volume or more with respect to 100 parts by volume of the matrix resin component. A polymer viscosity of the matrix resin component after a crosslinking reaction in the absence of the thermally conductive particles is 500 Pa·s or less at 25° C. A thermal conductivity of the thermally conductive sheet is 2.0 W/m·K or more. When the thermally conductive sheet with an initial thickness of 1.5 mm is compressed at a compression rate of 5.0 mm/min to measure a 50% compressive load value, the maximum load value is 100 kPa or more and the load value after 1 minute is more than 0 kPa and 100 kPa or less. With this configuration, the thermally conductive sheet has a high thermal conductivity, a low steady load value, and flexibility.
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公开(公告)号：US20220071070A1
公开(公告)日：2022-03-03
申请号：US17263062
申请日：2020-02-19
发明人： Shingo ITO
摘要： An electromagnetic wave absorbing thermally conductive composition contains a matrix resin component, metal soft magnetic particles, and thermally conductive particles. The metal soft magnetic particles are carbonyl iron particles and are present in an amount of 30% by volume or more when the electromagnetic wave absorbing thermally conductive composition is a population parameter. A value of an imaginary part (μ″) of relative permeability of the electromagnetic wave absorbing thermally conductive composition is 0.9 or more in at least some bands in a frequency range of 18 to 26.5 GHz. The electromagnetic wave absorbing thermally conductive composition in the form of a sheet has a thermal conductivity of 2.0 W/m·K or more in the thickness direction. A sheet of the present invention incudes the above composition in the form of a sheet. Thus, the present invention provides the electromagnetic wave absorbing thermally conductive composition and its sheet that can increase the value of the imaginary part (μ″) of relative permeability in a frequency band of 18 to 26.5 GHz, efficiently absorb electromagnetic wave noise in this frequency band, and also have a high thermal conductivity.
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4.发明申请公开(公告)号：US20210261845A1
公开(公告)日：2021-08-26
申请号：US16972403
申请日：2020-03-02
发明人： Yuji NAKAJIMA , Katsuyuki SUZUMURA
摘要： A heat-resistant thermally conductive composition contains a matrix resin and thermally conductive particles, and contains a benzimidazolone compound as a heat resistance improver. Preferably, the benzimidazolone compound is a benzimidazolone pigment and is added in an amount of 0.001 to 5 parts by mass with respect to 100 parts by mass of the heat-resistant thermally conductive composition. Preferably, the matrix resin component is a silicone polymer. Preferably, the heat-resistant thermally conductive composition has an Asker C hardness of 70 or less after curing. With these, provided are a heat-resistant thermally conductive composition and a heat-resistant thermally conductive sheet that use the heat resistance improver containing no metal atom and that are less likely to become hard at high temperature.
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公开(公告)号：US20210214600A1
公开(公告)日：2021-07-15
申请号：US16961882
申请日：2019-10-02
发明人： Hitoshi SHIBUYA
摘要： A thermally conductive sheet contains a matrix resin and thermally conductive particles. The content of the thermally conductive particles is 200 parts by volume or more with respect to 100 parts by volume of the matrix resin component. A polymer viscosity of the matrix resin component after a crosslinking reaction in the absence of the thermally conductive particles is 500 Pa·s or less at 25° C. A thermal conductivity of the thermally conductive sheet is 2.0 W/m·K or more. When the thermally conductive sheet with an initial thickness of 1.5 mm is compressed at a compression rate of 5.0 mm/min to measure a 50% compressive load value, the maximum load value is 100 kPa or more and the load value after 1 minute is more than 0 kPa and 100 kPa or less. With this configuration, the thermally conductive sheet has a high thermal conductivity, a low steady load value, and flexibility.
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公开(公告)号：US20210070952A1
公开(公告)日：2021-03-11
申请号：US17044625
申请日：2019-10-10
发明人： Katsuyuki SUZUMURA
摘要： A thermally conductive sheet 10 contains a matrix resin 11, filler molded pieces 12 containing a first thermally conductive filler 15 with shape anisotropy, and a second thermally conductive filler 13. The filler molded pieces 12 contain a binder resin 14 and the first thermally conductive filler 15. The first thermally conductive filler 15 is oriented in the thickness direction of each of the filler molded pieces 12. The first thermally conductive filler 15 is also oriented in the thickness direction of the thermally conductive sheet 10 when present in the thermally conductive sheet 10. This configuration provides a thermally conductive sheet with a high thermal conductivity and a large size, and a method for producing the thermally conductive sheet.
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7.发明授权公开(公告)号：US10903001B2
公开(公告)日：2021-01-26
申请号：US16006390
申请日：2018-06-12
发明人： Shingo Kobayashi
IPC分类号： H01F41/02 , B29C70/62 , B29C45/00 , B29C45/17 , H01F1/44 , B29K21/00 , B29K83/00 , B29K505/12
摘要： A method and an apparatus for producing a radially aligned magnetorheological elastomer molded body containing a matrix resin and a magnetic filler are provided. The method includes the following: placing a permanent magnet 11 in at least one position selected from positions that are spaced from a metal mold 14a having a cavity 14b and located above and below the center of the metal mold 14a; providing a closed magnetic circuit that allows a magnetic flux 19a generated by the permanent magnet 11 to pass through the metal mold 14a from a side thereof, filling the cavity 14b with a composition containing the matrix resin and the magnetic filler; and molding the composition while the magnetic filler is radially aligned. With this configuration, the elastomer material is molded while the magnetic filler is radially aligned by using the permanent magnet.
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公开(公告)号：US10804004B2
公开(公告)日：2020-10-13
申请号：US15207039
申请日：2016-07-11
摘要： A conducting film of the present invention includes (A) graphene and/or graphene oxide, and/or derivatives thereof, and (B) a compound having a sulfonic acid group, and/or derivatives thereof, and has a volume resistivity of 1×104 Ω·cm or less. A method for producing the conducting film of the present invention includes preparing a dispersion by dispersing a component including (A) graphene and/or graphene oxide, and/or derivatives thereof, and (B) a compound having a sulfonic acid group, and/or derivatives thereof in a dispersion medium, applying the dispersion on a substrate and drying it, and performing heat treatment at a temperature of 100° C. or more. Thereby, the present invention provides a conducting film that has high conductivity and can be applied to a wide range of composites including graphenes, and a method for producing the same.
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公开(公告)号：US10662316B2
公开(公告)日：2020-05-26
申请号：US15380568
申请日：2016-12-15
摘要： A magneto-rheological elastomer composition (10) includes a matrix resin (12) and a magnetic powder (11). The magnetic powder (11) is contained in an amount of 30 to 70% by volume based on 100% by volume of the composition. The magneto-rheological elastomer composition (10) has an Asker C hardness of 5 to 60 as determined by the Standard SRIS0101 of the Society of Rubber Science and Technology, Japan. The average particle size of the magnetic powder is preferably 2 to 500 μm, and the matrix resin is preferably an organopolysiloxane. The storage modulus of the magneto-rheological elastomer composition preferably changes by five times or more upon application of a magnetic force with a magnetic flux density of 200 mT. Thus, the present invention provides a magneto-rheological elastomer composition that greatly changes its storage modulus upon application of magnetism, a method for producing the same, and a vibration absorbing device including the same.
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公开(公告)号：US20180094181A1
公开(公告)日：2018-04-05
申请号：US15704827
申请日：2017-09-14
申请人： National Institute of Advanced Industrial Science and Technology , Fuji Polymer Industries Co., Ltd.
发明人： Yuichi TOMINAGA , Kimiyasu SATO , Yuji HOTTA , Mai SUGIE , Hitoshi SHIBUYA , Toshio SARUYAMA
摘要： A composite material of the present invention is a composite material including cellulose nanofibers and nanoparticles. The structure of the nanoparticles is composed of primary nanoparticles with a particle diameter of 3 to 50 nm or aggregated nanoparticles with a particle diameter of 100 nm or less in which the nanoparticles are aggregated. The surfaces of the cellulose nanofibers are densely covered with the nanoparticles. The composite material has a thermal conductivity in a plane direction of preferably 3.0 W/m·K or more. The production method of the composite material of the present invention includes continuously or sequentially mixing a suspension in which cellulose nanofibers are dispersed in a dispersion medium and a suspension in which nanoparticles are dispersed in a dispersion medium to obtain a composite material in which the surfaces of the cellulose nanofibers are densely covered with the nanoparticles.
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