Читать книгу Industrial Carbon and Graphite Materials - Группа авторов - Страница 260

Hubert Jäger1, Wilhelm Frohs2, Ferdinand von Sturm3, Otto Vohler3, †, and Erhard Wege3,†

1 Institute of Lightweigth Engineering and Polymer Technology (ILK), Hohlbein Straße 3, Dresden, 01307, Germany

2 SGL Carbon GmbH, Werner‐von‐Siemens Straße 18, Meitingen, 86405, Germany

3 Sigri GmbH, Werner‐von‐Siemens Straße 18, Meitingen, 86405, Germany

The production processes for polygranular carbon and graphite materials are equivalent to those applied in the ceramic industry. As the granular carbon raw materials do not melt under heat treatment, they have to be glued together by a binder component that is viscous under mixing and forming conditions. Most important however is that this binder is later thermally converted to coke or char. This conversion is the result of manyfold chemical reactions like cracking, polymerization, and polycondensation. To fulfill this task the binder has to be of carbonaceous nature as well. The production scheme of synthetic carbon and graphite is shown in Figure 6.1.1.1.

Self‐sintering carbons have been developed from carbonaceous mesophase. Their high prices have limited a broader industrial application, although their material properties are very promising.