阅读说明：本技术 一种球形或角形粉体填料的制备方法、由此得到的球形或角形粉体填料及其应用 (Preparation method of spherical or angular powder filler, spherical or angular powder filler obtained by preparation method and application of spherical or angular powder filler ) 是由 陈树真 李锐 于 2019-02-22 设计创作，主要内容包括：本发明涉及一种球形或角形粉体填料的制备方法,提供包括T单位的球形或角形硅氧烷,其中,T单位＝R<Sub>1</Sub>SiO<Sub>3</Sub>-,R<Sub>1</Sub>为氢原子或可独立选择的碳原子1至18的有机基；以及在惰性气体氛围或真空条件下,对该球形或角形硅氧烷进行热处理,热处理温度为250度以上至750度以下,以使得球形或角形硅氧烷中的硅羟基发生缩合以得到缩合硅氧烷,最终获得球形或角形粉体填料。本发明还提供一种根据上述的制备方法得到的球形或角形粉体填料。本发明又提供一种根据上述的球形或角形粉体填料的应用。本发明提供的填料具有低诱电率、低诱电损失、无导电异物、无粗大颗粒和低放射性。(The invention relates to a preparation method of spherical or angular powder filler, and provides spherical or angular siloxane containing T units, wherein the T units are R 1 SiO 3 ‑，R 1 An organic group which is a hydrogen atom or an independently selected carbon atom of 1 to 18; and carrying out heat treatment on the spherical or angular siloxane under the inert gas atmosphere or vacuum condition, wherein the heat treatment temperature is more than 250 ℃ and less than 750 ℃, so that silicon hydroxyl groups in the spherical or angular siloxane are condensed to obtain condensed siloxane, and finally obtaining the spherical or angular powder filler. The invention also provides spherical or angular powder obtained by the preparation methodAnd (4) filling. The invention also provides the application of the spherical or angular powder filler. The filler provided by the invention has low dielectric rate, low dielectric loss, no conductive foreign matters, no coarse particles and low radioactivity.)