Phenolic resin is an important binder for refractory materials. Compared with asphalt, phenolic resin has good wetting properties for refractory materials and graphite, high residual carbon rate, good adhesion, and can be mixed and molded at room temperature. The molded body strength High, low content of harmful substances, can improve the working environment and other advantages, has been widely used as a binder for carbon-containing refractories. This article starts with phenolic resin, and analyzes and discusses the application of phenolic resin in magnesia-carbon bricks, aluminum-carbon bricks and other carbon composite shaped refractories, as well as in tundish dry materials, blast furnace anhydrous gun mud and other unshaped refractories.
The research of phenolic resin used in refractories mainly focuses on the modification of resin. Among them, the use of catalytic reactions to improve the structure and performance of resin residual carbon is a major trend in future research. Binder is an indispensable component in refractory materials, it plays the role of cementing the refractory material particles and powder together. The synthesis of a new type of network interpenetrating high-performance phenolic resin is another trend in future research. This method mainly focuses on changing the structure of the resin itself so that it has a more complex network structure than ordinary phenolic resin after curing. Improve the low-temperature baking strength and medium-temperature strength of the material, while reducing the amount of phenol and reducing the cost of phenolic resin.
