The main materials used to make ceramic fiber insulation include:
Aluminosilicates
These are the most common materials used in ceramic fiber insulation. They contain a mixture of aluminum oxides and silicon oxides. Aluminosilicates provide good insulation properties at high temperatures.
Silica:
Pure silica or silicon dioxide is also used as a raw material in some types of ceramic fiber insulation. Silica provides good thermal resistance up to around 1200 °C.
Alumina:
Aluminum oxide is used to improve the high temperature stability and durability of some ceramic fiber insulation products. Alumina has a high melting point of over 2000 °C.
Zirconia:
Zirconium oxide is added to some ceramic fiber formulations to improve insulation properties at very high temperatures over 1500 °C. Zirconia has a melting point above 2700 °C.
Refractory additives:
Other oxides like magnesia, chromia and titania are sometimes included in ceramic fiber mixes to improve thermal properties, stability and durability at specific high temperatures.
Fiberglass:
Glass fibers made from silica, alumina and other metal oxides are also used in some types of high temperature insulation to provide mechanical strength and high temperature stability to the material.
China ceramic fiber insulation Supplier use most important raw materials used to make ceramic fiber insulation include different proportions of aluminosilicates, aluminum oxide, silica, zirconia and other refractory metal oxide additives. These minerals provide the requisite high temperature stability, durability and insulation properties for ceramic fiber insulation products.