Thermal insulation materials suitable for use at high temperatures, and process for making said materials
AssigneeMersen Scotland Holytown Limited
InventorsIan BARTLETT, Marcin TODA
Life of this patent
Estimating the term…
Abstract
A process for making a thermal insulation material based on carbon and which includes carbon fibers, suitable for use at temperatures above 1,500° C. The process includes providing carbon fibers with embedded carbon black particles; cutting or milling said carbon fibers to obtain short carbon filaments; preparing a slurry by introducing the short carbon filaments in a liquid phase that includes a binder capable of forming a carbon residue upon pyrolysis under non-oxidizing conditions; casting the slurry into a mold capable of separating the slurry into a wet green body and a liquid phase; and drying and heat treating the wet green body to obtain a thermal insulation material.
Claims18
1-17. (canceled)
A process for making a thermal insulation material comprising carbon fibers, the process comprising:
- providing carbon fibers with embedded carbon black particles;
- cutting or milling the carbon fibers to obtain short carbon filaments with an average length not exceeding about 2,000 μm;
- preparing a slurry by introducing the short carbon filaments in a liquid phase comprising a binder capable of forming upon heat treatment at a temperature of at least 700° C. under non-oxidizing conditions a carbon residue representing 10% or more of the initial mass of the binder;
- casting said slurry into a mold to separate the slurry into a wet green body and a liquid phase;
- and
- drying and heat treating the wet green body to obtain a thermal insulation material.
Dependencies are inferred from the claim text.