If bubbles appear in the production of special conductive carbon black, it will cause the disconnection of the connection point during application. What are the types of bubbles that can be classified?
1. Restoration foam: This is a green foam produced due to insufficient reduction.
2. Oxidation bubbles: These are bubbles caused by incomplete oxidation of conductive carbon black, with high levels of impurities such as carbonates, sulfates, and organic matter, and insufficient or unstable concentrations.
3. Glaze foam: The deposited carbon or decomposition products are not completely burned out before the glaze melts. When the glaze melt seals the blank, the gas produced by oxidation decomposition is not easy to escape and can only remain in the glaze layer of the conductive carbon black to form glaze foam.

The main reasons for the formation of conductive carbon black glaze bubbles are high content of high-temperature decomposition products in the glaze, low initial melting temperature of the glaze, and premature vitrification of the glaze surface; Improper atmosphere control during the strong reduction stage can lead to carbon deposition, etc.
Editor: Zyqun