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    • 4. 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。