Nano organic solvent silicasol and preparation method thereof

A technology of organic solvent and silica sol, applied in the field of nanomaterials, can solve the problem that organic silica sol cannot be absolutely water repellent and so on
CN1699166AInactive Publication Date: 2005-11-23UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
UNIV OF ELECTRONICS SCI & TECH OF CHINA
Publication Date
2005-11-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a nano organic solvent silicasol and preparation method, which mainly comprises SiO2 particles, organic solvent and end blocking agent by the proportion of SiO2 particles 5-15%, organic solvent 94.5-83.5%, end blocking agent 0.5-1.5%.The grain diameter of SiO2 is between 10-100 nanometer, the pH of the sol system be between 6-9. The sol is prepared through the conventional method for organic solvent silicon oxide sol with a boiling point higher then that of water. The preparation method employs sodium silicate as the raw material.
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Description

technical field

[0001] The invention belongs to the technical field of nanometer materials, in particular to a nanometer organic solvent silica sol and a preparation method thereof. Background technique

[0002] SiO 2 Sol (also known as silica sol) is a polymer amorphous SiO 2 A colloidal solution of particles dispersed in a solvent. After American Bird invented the use of ion exchange to produce silica sol in 1941, silica sol has gradually been widely used in the manufacturing fields of fibers, fabrics, paper, coatings, adhesives, paints, ceramics, medicine, food, precision casting and electronic industries. ground application. Now, in the semiconductor industry, silica sol is used for precision polishing of silicon wafers, and the application prospect is very broad.

[0003] Silica sol can be divided into water-solvent silica sol or organic solvent silica sol according to the different properties of the solvent. Water solvent silica sol SiO 2 Its concentration is gen...

Claims

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