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    • 2. 发明授权
    • Silicone rubber roll
    • 硅橡胶卷
    • US5582885A
    • 1996-12-10
    • US247190
    • 1994-05-20
    • Tsutomu NakamuraSatao Hirabayashi
    • Tsutomu NakamuraSatao Hirabayashi
    • B41J11/04B29K83/00B29L31/32C08G77/34C08K3/36C08L83/04G03G15/20B32B1/08B25F1/00
    • G03G15/2057C08G77/34C08L83/04C08G77/12C08G77/20C08G77/24C08G77/26C08G77/70Y10T428/1355Y10T428/1397Y10T428/31663
    • A silicone rubber roll is characteristically prepared on a metallic center by forming a layer of the cured product of a silicone rubber composition which comprises (A) organopolysiloxane, in which the total amount of low molecular weight siloxanes having a degree of polymerization ranging from 3 to 20 is controlled to be at most 10,000 ppm, (B) reinforcing silica powder with a specific surface area of at least 50 m.sup.2 /g, (C) silicone elastomer particles with an average particle size of 200 .mu.m, in which the total amount of low molecular weight siloxanes having a degree of polymerization ranging from 3 to 20 is 2,000 ppm or less, and (D) a curing agent. The total amount of low molecular weight siloxanes having a degree of polymerization ranging from 3 to 20 within the cured product layer is controlled to be 2,000 ppm or less, since the elimination of the low molecular weight siloxanes having a degree of polymerization ranging from 3 to 20 proceeds effectively during the processes of the silicone rubber composition preparation, forming, and curing. Therefore, the obtained roll is extremely useful for various types of rolls utilized in copying machines which particularly need to avoid the low molecular weight siloxanes.
    • 通过形成硅橡胶组合物的固化产物层,在金属中心上形成硅橡胶辊,该硅橡胶组合物包含(A)有机聚硅氧烷,其中聚合度为3〜3的低分子量硅氧烷的总量为 20的比例控制在10000ppm以下,(B)比表面积为50m 2 / g以上的增强二氧化硅粉末,(C)平均粒径200μm的硅氧烷弹性体粒子,其中, 的聚合度为3〜20的低分子量硅氧烷为2,000ppm以下,(D)固化剂。 将固化产物层内聚合度为3〜20的低分子量硅氧烷的总量控制在2000ppm以下,由于消除聚合度为3〜3的低分子量硅氧烷, 20在硅橡胶组合物制备,成型和固化过程中有效地进行。 因此,所得到的辊对于特别需要避免低分子量硅氧烷的复印机中使用的各种辊非常有用。
    • 6. 发明申请
    • Crosslinkable rubber compositions and uses thereof
    • 可交联橡胶组合物及其用途
    • US20050154132A1
    • 2005-07-14
    • US11002938
    • 2004-12-03
    • Takashi HakutaMasaaki KawasakiYoshiharu KikuchiTsutomu NakamuraSatao HirabayashiTakeo Yoshida
    • Takashi HakutaMasaaki KawasakiYoshiharu KikuchiTsutomu NakamuraSatao HirabayashiTakeo Yoshida
    • C08K5/00C08L23/16C08L83/04C08L47/00C08F4/06
    • C08K5/0025C08L23/16C08L83/04C08L2312/08C08L2314/02C08L83/00
    • The crosslinkable rubber composition of the invention is crosslinkable by hot air, and a hot-air crosslinked rubber sheet thereof has no scratch on the surface in a hardness test using a pencil of HB and has a compression set of not more than 70% after a heat treatment at 150° C. for 22 hours. The rubber composition comprises an ethylene/α-olefin/non-conjugated polyene random copolymer rubber comprising a specific vinyl end group-containing norbornene compound, a SiH group-containing compound having at least two SiH groups in one molecule, and if necessary, an addition reaction catalyst comprising a platinum group element and a reaction inhibitor. The automobile weatherstrip, hose, rubber vibration insulator, belt, sealing material, expanded product, covered electric wire, electric wire joint, electric insulating part and household rubber product according to the invention comprise the above-mentioned rubber composition. The rubber composition has a high crosslinking rate and excellent productivity to produce crosslinked rubber molded products, is capable of undergoing hot-air crosslinking such as HAV or UHF and is capable of providing crosslinked rubber molded products having excellent compression set resistance, strength properties, heat resistance, weathering resistance and abrasion resistance.
    • 本发明的交联性橡胶组合物可以通过热风进行交联,在使用HB的铅笔的硬度试验中,热风交联橡胶片在表面没有刮痕,并且在a后的压缩永久变形为70%以上 在150℃下热处理22小时。 该橡胶组合物包含一个乙烯/α-烯烃/非共轭多烯无规共聚物橡胶,其包含特定的含乙烯基端基的降冰片烯化合物,在一个分子中具有至少两个SiH基团的含SiH基化合物,如果需要, 包含铂族元素和反应抑制剂的加成反应催化剂。 根据本发明的汽车密封条,软管,橡胶振动绝缘子,带,密封材料,膨胀产品,包覆电线,电线接头,电绝缘部件和家用橡胶制品包括上述橡胶组合物。 橡胶组合物具有高交联率和优异的生产交联橡胶成型体的生产率,能够进行热风交联如HAV或UHF,并且能够提供具有优异的耐压缩变形性,强度性能,热性能的交联橡胶模制产品 耐电阻,耐候性和耐磨性。
    • 7. 发明授权
    • Conductive fluorosilicone rubber composition
    • 导电氟硅橡胶组合物
    • US06268426B1
    • 2001-07-31
    • US09531271
    • 2000-03-20
    • Satao HirabayashiTsutomu Nakamura
    • Satao HirabayashiTsutomu Nakamura
    • C08K303
    • C08K9/00C08L83/04
    • A conductive fluorosilicone composition including: (A) an organopolysiloxane having a polymerization degree of at least 100 and represented by the following average compositional formula: Ra(CF3CH2CH2)bSiO[4-(a+b)]/2  (1) wherein R is an unsubstituted monovalent hydrocarbon group, a is a number ranging from 0.8 to 1.8, b is a number ranging from 0.2 to 1.2, and a and b are numbers satisfying a+b=1.95 to 2.05 and b/(a+b)=0.1 to 0.6, (B) a graphitization-treated carbon black, and (C) a curing agent. The composition can give, upon curing, a cured product having a small tension-set, a good rubber-elasticity and an excellent heat-resistance, as well as a desired conductivity and a good solvent-resistance.
    • 一种导电氟硅酮组合物,其包含:(A)聚合度为至少100并由以下平均组成式表示的有机聚硅氧烷:其中R为未取代的单价烃基,a为0.8至1.8的数,b为 数字范围为0.2至1.2,a和b为满足a + b = 1.95至2.05和b /(a + b)= 0.1至0.6的数字,(B)石墨化处理的炭黑,(C)固化 代理商 组合物在固化时可以赋予具有小张力,良好的橡胶弹性和优异的耐热性以及期望的导电性和良好的耐溶剂性的固化产物。
    • 9. 发明授权
    • Rare earth metal-based permanent magnet
    • 稀土金属永磁体
    • US09287027B2
    • 2016-03-15
    • US12990341
    • 2008-05-14
    • Yukimitsu MiyaoTsutomu Nakamura
    • Yukimitsu MiyaoTsutomu Nakamura
    • H01F1/057B32B15/04C22C9/00C22C13/00H01F41/02
    • H01F1/0577C22C9/00C22C13/00H01F41/026Y10T428/32Y10T428/325
    • An objective of the present invention is to provide a rare earth metal-based permanent magnet with improved adhesion properties. A rare earth metal-based permanent magnet of the present invention as a means for achieving the objective has a laminated plating film, and is characterized in that the plating film comprises as an outermost surface layer a SnCu alloy plating film having a film thickness in a range from 0.1 μm to 2 μm, the composition of the SnCu alloy plating film is 35 mass % or more but less than 55 mass % of Sn and the rest being Cu, and a base plating film having two or more layers including at least a Ni plating film and a Cu plating film which are formed as the lower layer under the SnCu alloy plating film, and among the base plating film, the Ni plating film is located just below the SnCu alloy plating film. A joined structure fabricated using the rare earth metal-based permanent magnet of the present invention exhibits favorable initial adhesion strength when combined with a silicone-based adhesive, and is less deteriorated in adhesion strength even after a moisture resistance test.
    • 本发明的目的是提供一种具有改进的粘合性能的稀土金属基永磁体。 本发明的稀土金属类永磁体作为实现目的的手段具有叠层电镀膜,其特征在于,所述镀膜包含作为最外表面层的SnCu合金镀膜,膜厚度为 在0.1μm〜2μm的范围内,SnCu合金镀膜的成分为Sn的35质量%以上且小于55质量%,其余为Cu,并且具有两层以上的基底镀膜至少含有 Ni镀覆膜和Cu电镀膜,在SnCu合金镀膜之下形成为下层,并且在底镀膜中,Ni镀膜位于SnCu合金镀膜的正下方。 使用本发明的稀土类金属类永磁体制造的接合结构,与硅酮类粘合剂组合时,表现出良好的初期粘合强度,即使在耐湿试验之后,粘合强度也劣化。