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Research and Development

Ceramic porosification technology

During Isolite’s over 90-year-long history, we have accumulated techniques to porosify ceramics, and devoted ourselves to further research.
Porosification technology can impart various functions to products by applying and combining techniques such as selection of pore shape, control of pore diameter, adjustment of porosity and material optimization.
Here we introduce two main ceramic porosification technologies Isolite has established.

1. Method of adding pores internally

Method of adding pores internally

Techniques for adding internal pores are mainly used for insulating firebricks. The main effect is to reduce thermal conductivity (improving thermal insulation) and realize lightweight. We have established a technology to produce low-density insulating firebricks with a bulk density of 1.0 g/cm3 or less from high density raw materials such as silica and alumina.
Various physical properties can be added by selecting the pore volume, pore diameter and pore shape.
As processing becomes easier by adding pores, it is possible to meet complicated shape requirements.

2. Method of making layers of inorganic fibers

The technique of making layers of inorganic fibers is used for secondary processed products made from ceramic fiber. By making layers of ceramic fibers in air and needle punching, it becomes a flexible blanket shape.

When inorganic fibers are layered in water, it is possible to make into various shaped products which is lightweight and durable with a bulk density of 250 kg/m3.