Preparation method of silica
Patent Information
- Authority / Receiving Office
- CN ยท China
- Current Assignee / Owner
- XIAMEN UNIV
- Publication Date
- 2011-04-20
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Abstract
Description
Technical field
[0001] The invention relates to a method for preparing silica materials, in particular to a method for preparing silica using super / subcritical fluid to participate in carbonization reaction (supercritical carbonization reaction) coupled with supercritical fluid drying (supercritical drying). Background technique
[0002] Silica powder is an amorphous white powder. It is a non-toxic, odorless, and non-polluting non-metallic material. Its microstructure is flocculent and net-like quasi-particle structure. This special structure makes it have unique properties, such as: special optical and electrical properties, high magnetoresistance, nonlinear resistance, and high strength, high toughness, and good stability at high temperatures. It is widely used in catalyst carriers, decolorizers, matting agents, thermal insulation materials, rubber reinforcing agents, plastic fillers, ink thickeners, soft metal polishing agents, insulating and thermal insulation fillers, filler...