Preparation of Cocoon Plate and Carbonization

Abstract

Cocoon carbon of maintained cocoon shape(bulky property) is used for several usage. Plate cocoon carbon from flat sheet cocoon(Gunma ×200) would be used for several application. Cocoon plates were prepared by hot-press method for several sheets of flat sheet cocoon. The largest values of bulkiness density and bending stress for cocoon plate were 1.26 g/cm³ and 55.9 MPa, respectively. Cocoon plate was dissolved in water at room temperature.
Several kinds of cocoon plate carbon were obtained from cocoon plate at 400°C∼1000°C, 1500°C, 1900°C in nitrogen atmosphere. Carbonization yield decreased with increasing carbonization temperature, and the value of it was 32% at 800°C. Crystalinity of cocoon plate carbon was classified into the hard carbon material by X-ray diffraction method.