Soluble ceramic fiber this is an alkaline earth silicate fiber mainly composed of SiO2, MgO and Cao. Because it has certain solubility in human body fluid and reduces the damage to human health, it is called soluble fiber.

Chinese name:Soluble ceramic fiber

Main components:SiO2、MgO、CaO

varieties:Loose fiber, needled blanket, etc

characteristic:Certain solubility in body fluids

Due to the introduction of MgO, Cao and other components, it is beneficial to expand the viscosity range of fiber forming, improve the fiber forming conditions, and improve the fiber forming rate and fiber softness. However, due to the introduction of MgO, Cao and other components, Cao · SiO2, Cao · MgO · 2SiO2 and other low melting point compounds are generated, resulting in the reduction of fiber heat resistance.

Therefore, generally soluble fiber belongs to low-grade ceramic fiber, and its products are mostly used as backing materials for industrial kilns. In order to improve the heat resistance of soluble fiber, ZrO2 was introduced to increase the viscosity of glass phase, inhibit the grain growth rate of fiber after thermal crystallization, and improve the heat resistance of soluble fiber. 

At present, the United States, Britain and France have successively developed such products and put them on the market as commodities.

The varieties of soluble fiber include bulk fiber, needled blanket, wet vacuum molding products, etc.