123. Herstellung von Kohlenstoffasern aus Steinkohlenteerpech

✍ Scribed by I. Romey

• Publisher: Elsevier Science
• Year: 1976
• Tongue: English
• Weight: 128 KB
• Volume: 14
• Category: Article
• ISSN: 0008-6223
• DOI: 10.1016/0008-6223(76)90256-6

✦ Synopsis

speed liquid chromatography, especially the gel permeation chromatography offers new possibilities for the characterisation of complex mixtures of hydrocarbons like pitch. This method makes possible a qualitative measurement of the molecular weight distribution of quinoline soluble pitch fractions, which gives much more detailed information than the empiric solvent extraction methods. Furthermore promising methods of the quantitative measurement of the molecular weight distribution are shown, i.e. for example the determination of average UV-extinction coeffizient of individual chromatographic fractions in correlation with molecular weight measurements.

predict the ultimate strength of carbon-carbon composites.

M. CARBON FIBERS AND COMPOSITES

, PYROCARBON 122. The properties of coal-based carbon fibres 118. Actomatic and multiple determination of the softening point of pitches by Kraemer-Sarnow I. Letizia and F. Calderone (Electtrocarbonium S.p.A.