公开(公告)号：US20080045411A1

公开(公告)日：2008-02-21

申请号：US10530491

申请日：2003-12-16

申请人： Martin Morters ,  Helmut Mangold ,  Monika Oswald ,  Kai Schumacher ,  Heinz Lach ,  Gerrit Schneider

发明人： Martin Morters ,  Helmut Mangold ,  Monika Oswald ,  Kai Schumacher ,  Heinz Lach ,  Gerrit Schneider

IPC分类号： C01B33/12 ,  B01J21/08 ,  C01B33/141 ,  C03C3/04 ,  B24B1/00

CPC分类号： C03C3/04 ,  B82Y30/00 ,  C01B33/1417 ,  C01B33/1485 ,  C01B33/183 ,  C01P2004/50 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2006/10 ,  C01P2006/12 ,  C01P2006/22

摘要： Pyrogenic silicon dioxde powder with a BET surface area of 30 to 90 m2/g, a DBP index of 80 or less, a mean aggregate area of less than 25000 nm2 and a mean aggregate circumference of less than 1000 nm, wherein at least 70% of the aggregates have a circumference of less than 1300 nm, It is prepared by mixing at least one silicon compound in vapour form, a free-oxygen-containing gas and a combustible gas in a burner of known construction, igniting this gas mixture at the mouth of the burner and burning it in the flame tube of the burner, separating the solid obtained from the gas mixture and optionally purifying, wherein the oxygen content of the free-oxygen-containing gas is adjusted so that the lambda value is greater than or equal to 1, the gamma value is between 1.2 and 1.8, the throughput is between 0.1 and 0.3 kg SiO2/m3 of core gas mixture and the mean normalised rate of flow of gas in the flame tube at the level of the mouth of the burner is at least 5 m/s. The powder can be used as a filler. A dispersion containing the powder according to the invention. The powder can be used as a filler in rubber, silicone rubber and plastics. The dispersion can be used to prepare glass items.

摘要翻译： BET表面积为30〜90m 2 / g，DBP指数为80以下，平均聚集面积小于25000nm 2的热解二氧化硅粉末， 并且平均聚集体周长小于1000nm，其中至少70％的聚集体具有小于1300nm的周长。它是通过将至少一种蒸气形式的硅化合物，含游离氧的气体和 在已知结构的燃烧器中的可燃气体，在燃烧器的口部点燃该气体混合物，并将其燃烧在燃烧器的火焰管中，分离从气体混合物获得的固体并任选地进行净化，其中游离的 调节含氧气体，使得λ值大于或等于1，γ值在1.2和1.8之间，生产量在0.1至0.3kg之间，核心的SiO 2 / m 3 气体混合物，并且在燃烧器口处的火焰管中的气体的平均归一化流速为l 东5米/秒。 粉末可用作填料。 含有本发明粉末的分散体。 该粉末可用作橡胶，硅橡胶和塑料中的填料。 分散体可用于制备玻璃制品。