Patent · US Active

Method and apparatus for producing carbon foam boards

US12187649B2 · kind B2 · utility

0Cited by

1References

11Claims

0Family size

Assignee

Nippon Kornmeyer Carbon Group GmbH · DE

Inventors

David Klein · Fontana, US
Michael GERADS · Bonn, DE

Key dates

Filing date	Jan 24, 2024
Grant date	Jan 7, 2025
Priority date	—
Expiry date	Jan 24, 2044

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC04B2235/661
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A method for producing carbon foam boards from starch for use as an insulation material or a filter is disclosed. The method is suitable for producing fine-pored carbon foam boards having a mainly homogeneous structure. This is achieved by sprinkling at least one very thin layer of foamable starch powder onto a temperature-resistant boardlike substrate, introducing the starch-powder-coated substrate into a furnace, introducing air, argon or nitrogen into the furnace until an internal pressure of ≈720 mbar to ≈1000 mbar has been established, heating the furnace to a foaming temperature of 180° C.-450° C. to foam the starch powder, maintaining the temperature over a prolonged duration of up to 10 hours to stabilize the foamed starch into a foam board.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.