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    • 5. 发明授权
    • Aluminum nitride powder and thermally conductive grease composition
using the same
    • 氮化铝粉末和使用其的导热油脂组合物
    • US6136758A
    • 2000-10-24
    • US209455
    • 1998-12-11
    • Kunihiro YamadaTakayuki TakahashiKenichi Isobe
    • Kunihiro YamadaTakayuki TakahashiKenichi Isobe
    • C01B21/072C10M113/16C10M169/00C10M169/02C10M107/50
    • C10M169/02C01B21/0728C10M113/16C10M169/00C10M2201/0613C10M2201/0616C10M2201/0626C10M2227/045C10N2210/02C10N2210/03C10N2250/10C10N2260/00
    • An aluminum nitride powder having the surface treated with an organosilane represented by formula, R.sup.I.sub.a R.sup.II.sub.b SiY.sub.4-1-b, and/or a partial hydrolysis condensate thereof to acquire excellent moisture-proof, wherein R.sup.I represents a 6-20C alkyl group or a group formed by substituting halogen atom or atoms for part or all of the hydrogen atoms attached to carbon atoms of the 6-20C alkyl group, R.sup.II represents a 1-20C hydrocarbon group or a group formed by substituting halogen atom or atoms for part or all of the hydrogen atoms attached to carbon atoms of the 1-20C hydrocarbon group, Y represents a hydrolyzable group, a is an integer of 1 to 3 and b is an integer of 0 to 2, provided that a+b is an integer of 1 to 3; and a thermally conductive grease composition comprising (A) 50-95 weight % of the aforementioned surface-treated aluminum nitride powder and (B) 5 to 50 weight % of at least one base oil selected from the group consisting of liquid silicones, liquid hydrocarbons and fluorohydrocarbon oils, and further, if desired, (C) 0-30 weight % of a thicknener selected from the group consisting of zinc oxide, alumina, boron nitride and silicon carbide powders.
    • 具有用式表示的有机硅烷表面处理的氮化铝粉末,RIaRIIbSiY4-1-b和/或其部分水解缩合物,以获得优异的防湿性,其中RI表示6-20C烷基或由 用卤原子或原子取代与6-20C烷基的碳原子连接的部分或全部氢原子,RII表示1-20C的烃基或通过用卤原子或原子取代部分或全部氢 附着于1-20C烃基的碳原子的原子,Y表示可水解基团,a表示1〜3的整数,b表示0〜2的整数,条件是a + b为1〜3的整数。 和导热性润滑脂组合物,其包含(A)50-95重量%的上述表面处理的氮化铝粉末和(B)5至50重量%的至少一种基础油,其选自液体硅酮,液体烃 和氟代烃油,并且如果需要,(C)0-30重量%的选自氧化锌,氧化铝,氮化硼和碳化硅粉末的增稠剂。
    • 8. 发明授权
    • Silicone grease composition
    • 硅油组合物
    • US06255257B1
    • 2001-07-03
    • US09453469
    • 1999-12-02
    • Kunihiro YamadaTakayuki TakahashiKenichi Isobe
    • Kunihiro YamadaTakayuki TakahashiKenichi Isobe
    • C10M10750
    • C10M169/02C10M169/00C10M2201/061C10M2201/0613C10M2201/062C10M2201/087C10M2201/10C10M2229/04C10M2229/0405C10N2210/02C10N2210/03C10N2220/021C10N2220/082C10N2240/00C10N2250/10
    • A silicone grease composition having high thermal conductivity, comprising (A) 50 to 95 weight % of a mixture of an aluminum nitride powder &agr; having an average particle size of 0.5 to 5 &mgr;m and an aluminum nitride powder &bgr; having an average particle size of 6 to 20 &mgr;m, wherein the aluminum nitride powders &agr; and &bgr; are mixed so that the &agr;/(&agr;+&bgr;) ratio by weight is from 0.1 to 0.9 and the average particle size after mixing is from 1 to 10 &mgr;m, (B) 5 to 15 weight % of organopolysiloxanes having a viscosity of from 50 to 50,000 cs at 25° C. and represented by formula R1aSiO(4−a)/2, wherein R1 represents at least one group selected from saturated or unsaturated univalent hydrocarbon groups containing 1 to 18 carbon atoms and 1.8≦a≦2.2, and (C) 0 to 35 weight % of at least one inorganic compound powder having an average particle size of 0.5 to 100 &mgr;m selected from the group consisting of zinc oxide, alumina, boron nitride and silicon carbide powders.
    • 一种具有高导热性的硅氧烷润滑脂组合物,其包含(A)50至95重量%的平均粒度为0.5至5μm的氮化铝粉末α和平均粒径为6的氮化铝粉末β的混合物 至20微米,其中将氮化铝粉末α和β混合,使得α/(α+β)重量比为0.1至0.9,混合后的平均粒度为1至10微米,(B)5 至15重量%的有机聚硅氧烷,其在25℃下具有50至50,000cs的粘度并由式R 1a SiO(4-a)/ 2表示,其中R 1表示选自饱和或不饱和的一价烃基中的至少一个基团, 至18个碳原子和1.8 <= a <= 2.2,和(C)0-35重量%的至少一种平均粒度为0.5-100微米的无机化合物粉末,选自氧化锌,氧化铝, 氮化硼和碳化硅粉末。