Electrical resistivity of pitch during heat treatment
β Scribed by John A. Sharp
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- English
- Weight
- 512 KB
- Volume
- 66
- Category
- Article
- ISSN
- 0016-2361
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π SIMILAR VOLUMES
The molecular constitutions of the coexisting anisotropic and isotropic phases of a heattreated petroleum pitch were studied as a function of heat treatment time. The results show that the coexisting phases. which were isolated by high temperature centrifuging, contain different proportions of simil
Both heating and cooling processes for mesophase formation from various pitches have been followed by in situ ESR measurements. In addition to signal intensity and linewidth, the saturation phenomenon of the signal intensity with changing microwave power was measured during heat treatment and coolin