US 4,235,836 A · Method for making thermal insulating, fire resistant material

Abstract

The invention relates to thermally insulating, fire resistant material and its production. A problem associated with fire resistant material comprising refractory material and a binder is the tendency, in use, of the material to disintegrate due to bond failure. In the invention, hollow particles of a glass or of a ceramic are combined with a binder to give a material where the proportions of binder are such that the material is capable of deformation at high temperatures (e.g. up to 1100.degree. C.) without fracture or loss of cohesion. A specific example consists of 93% by weight of hollow spherical particles of pulverized fuel ash and 7% by weight of sodium silicate binder. The material is particularly useful in the protection of steel structures.

Claims3

Dependent claims

A method of making a thermally insulating, fire resistant material which comprises the steps of

(i) pressing into a shape a mix consisting of hollow spherical particles of pulverised fuel ash and sodium silicate;
and
(ii) curing the pressed mix to give the thermally insulating, fire resistant material;
in which method the proportions of particles and sodium silicate in the mix are such that the thermally insulating, fire resistant material consists essentially of from 90% to 95% by weight of the particles and from 5% to 10% by weight of the sodium silicate.

1 more element

Dependencies are inferred from the claim text.

Method for making thermal insulating, fire resistant material

Life of this patent

Method for making thermal insulating, fire resistant material

Life of this patent

Abstract

Claims3