公开(公告)号：US08480990B2

公开(公告)日：2013-07-09

申请号：US12671375

申请日：2008-07-25

申请人： Syuji Sasaki ,  Hidetoshi Naito ,  Keishi Iizuka ,  Yasuhisa Nishi

发明人： Syuji Sasaki ,  Hidetoshi Naito ,  Keishi Iizuka ,  Yasuhisa Nishi

IPC分类号： C01B33/12 ,  B32B21/02 ,  C08K3/34

CPC分类号： C01B33/181 ,  Y10T428/2982

摘要： A silica powder containing an ultrafine powder in an amount of from 0.1 to 20 mass % and having an average sphericity of at least 0.85, wherein the ultrafine powder has, as the particle size measured by a dynamic light scattering particle size distribution measuring apparatus, an average particle size of from 150 to 250 nm, less than 10 mass % of the ultrafine powder having a particle size of at most 100 nm being less than 10 mass % (not including 0 mass %) and from 10 to 50 mass % of the ultrafine powder having a particle size exceeding 100 nm and not exceeding 150 nm.

摘要翻译： 含有0.1〜20质量％的超细粉末，平均球形度为0.85以上的二氧化硅粉末，其特征在于，超细粉末作为通过动态光散射粒度分布测定装置测定的粒径， 平均粒度为150〜250nm，小于10质量％（不包括0质量％）的小于10质量％的粒径为100质量％以下的超微粉末为10〜50质量％ 具有超过100nm且不超过150nm的超细粉末。

公开(公告)号：US20100204383A1

公开(公告)日：2010-08-12

申请号：US12671375

申请日：2008-07-25

申请人： Syuji Sasaki ,  Hidetoshi Naito ,  Keishi Iizuka ,  Yasuhisa Nishi

发明人： Syuji Sasaki ,  Hidetoshi Naito ,  Keishi Iizuka ,  Yasuhisa Nishi

IPC分类号： C08K3/36 ,  C01B33/12 ,  B32B1/00

CPC分类号： C01B33/181 ,  Y10T428/2982

摘要： To provide a silica powder which is excellent in flowability and packing properties and which is less likely to form a flash, a process for its production, and a composition having it incorporated in at least one of a rubber and a resin, particularly a sealing material.A silica powder containing an ultrafine powder in an amount of from 0.1 to 20 mass % and having an average sphericity of at least 0.85, wherein the ultrafine powder has, as the particle size measured by a dynamic light scattering particle size distribution measuring apparatus, an average particle size of from 150 to 250 nm, a content of particles having a particle size of at most 100 nm being less than 10 mass % (not including 0 mass %) and a content of particles having a particle size exceeding 100 nm and not exceeding 150 nm being from 10 to 50 mass %. A process for producing a silica powder, which comprises spraying a silica powder material to a high temperature zone of at least 1,750° C. formed by a burner for heat treatment, wherein the high temperature zone is formed in a range of from the forward end of the burner to 3.0-4.5 m therefrom, and to such a high temperature zone, a silica powder material containing from 0.05 to 10 mass % of a metal silicon powder is sprayed. A sealing material employing the silica powder of the present invention.

摘要翻译： 为了提供流动性和包装性能优异并且不太可能形成闪光的二氧化硅粉末，其生产方法和将其结合到橡胶和树脂中的至少一种中的组合物，特别是密封材料 。 含有0.1〜20质量％的超细粉末，平均球形度为0.85以上的二氧化硅粉末，其特征在于，超细粉末作为通过动态光散射粒度分布测定装置测定的粒径， 平均粒度为150〜250nm，粒径为100nm以下的粒子的含量小于10质量％（不含0质量％），粒径超过100nm的粒子的含量为 超过150nm为10〜50质量％。 一种二氧化硅粉末的制造方法，其特征在于，将二氧化硅粉末材料喷射到由用于热处理的燃烧器形成的至少1750℃的高温区域，其中，所述高温区域形成在前端 的燃烧器至3.0-4.5μm，并且在这样的高温区域喷射含有0.05〜10质量％的金属硅粉末的二氧化硅粉末材料。 使用本发明的二氧化硅粉末的密封材料。