METHOD FOR THE PREPARATION OF BORON NITRIDE POWDER
    1.
    发明申请
    METHOD FOR THE PREPARATION OF BORON NITRIDE POWDER 审中-公开
    硝酸硼粉的制备方法

    公开(公告)号:WO2010106541A1

    公开(公告)日:2010-09-23

    申请号:PCT/IL2010/000220

    申请日:2010-03-17

    Abstract: This invention is directed to a process for the preparation of boron nitride powder, particularly a fine powder with a low degree of contamination, which demonstrates good caking, heat conductivity and dielectric properties. Specifically, a process for the preparation of amorphous boron nitride (a-BN) is provided wherein the process comprises: mixing powders of boric acid and a carbamide at a temperature in the range of about 250-300°C, thereby forming: ammonium polyborates; boron imide or a mixture thereof and ammonia; and heating of the materials formed in step (a) to a temperature in the range of about 500-600°C, thereby forming a powder of a-BN.

    Abstract translation: 本发明涉及一种制备氮化硼粉末,特别是具有低污染度的细粉末的方法,其表现出良好的结块,导热性和介电性能。 具体地,提供了一种制备无定形氮化硼(a-BN)的方法,其中该方法包括:在约250-300℃的温度范围内混合硼酸和脲的粉末,由此形成:聚硼酸铵 ; 硼酰亚胺或其混合物和氨; 和将步骤(a)中形成的材料加热至约500-600℃的温度,从而形成a-BN的粉末。

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