Impervious graphite

Graphite imperméable

A composite material

Impervious graphite is a composite material made of 80 to 85% of synthetic graphite and 15 to 20% of phenolic resin depending on the selected graphite grade. It is used to manufacture corrosion resistant process equipment such as heat exchangers, columns, or ejectors for the most corrosive applications.

The manufacturing process of impervious graphite includes two main steps. First synthetic graphite is manufactured. Then this material is impregnated with phenolic resin to make impervious and enhance it mechanical characteristics. The impervious graphite manufacturing process is described here. 

Impervious graphite has noteworthy properties. It shows an outstanding thermal conductivity and a very low adhesion angle. It has a high compression strength but limited tensile and flexural strengths. 

Impervious graphite is corrosion resistant against most common acids (e.g. hydrochloric acid, sulfuric acid, and hydrofluoric acid) and solvents. It has a limited resistance against oxidizing media (e.g. nitric acid) and bases (e.g. amines, potash and caustic soda).

 

Technical documentation

 

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MIW1-EN Synthetic Resin Impregnated Graphite GAB GPX (SI units)

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MIW1-US Synthetic Resin Impregnated Graphite GAB GPX (US units)

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MIW2-EN Corrosion Resistance of Resin Impregnated Graphite GAB GPX (SI units)

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MIW2-US Corrosion Resistance of Resin Impregnated Graphite GAB GPX (US units)

GAB Neumann GmbH

Alemannenstrasse 29

79689 Maulburg

Germany

Tel: +49 (7622) 6751 0

Fax: +49 (7622) 6751 20

info@gab-neumann.de

GAB Neumann GmbH | Alemannenstrasse 29 | D-79689 Maulburg | Phone +49 (7622) 6751 0 | Fax +49 (7622) 6751 20 | E-Mail info@gab-neumann.de | www.gab-neumann.com

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