Abstract
Recently the requirements for the performance and applicability of the thermal insulation materials have become intensified. Responding to these requirements, many kinds of insulation materials are being developed excellent in heat resistance, thermal shock resistance, insulating property, strength, applicability, etc. Synthetic inorganic fiber is one of the representative insulation materials among the porous materials excellent in insulating properties and its application becomes much wider.
Here I would like to introduce the outlines and new applications of glass fibers, rockwool fibers, ceramic fibers and alumina fibers which are now widely used. Among these fibers, I can select the following three fibers which are having the novelties and newness.
1. Light weight and high strength molded shapes of ceramic fibers.
2. Fire resistant refractory board of alumina fibers up to 1, 800°C.
3. Reusable thermal insulation tiles for the space orbitor.
