Obtaining micro-tubes of carbon and activated carbon micro-tubes from eucalyptus tar pitch involves preparing coarse vegetal pitch by digestion with solution of water-alcohol
NOVELTY – Obtaining micro-tubes of carbon and activated carbon micro-tubes from eucalyptus tar pitch involves preparing coarse vegetal pitch by means of digestion with a solution of water-alcohol (40-60). This is followed by dry filtration at 100degreesC for 2 hr. The pitch fiber is then subjected to continuous spinning at 217-219degreesC. USE – For obtaining micro-tubes of carbon and activated carbon micro-tubes from eucalyptus tar pitch. ADVANTAGE – Carbon fibers are obtained with cylindrical cavities concentric to the axis of the fiber, along its longitudinal extension. Due to this characteristic, the fiber are denominated a carbon micro-tubes. DETAILED DESCRIPTION – Preferred Features: Continuous spinning involves using a centrifuge with an orifice of 0.45 mm, revolving at 100 to 150 m/min. This is followed by heat treatment for stabilization at 80degreesC for 4 hr, 120degreesC for 4 hr, and 270 degreesC for 4 hr in air atmosphere, and carbonization at 700-900degreesC in a flow of nitrogen.
Main Application Field
H08 (Petroleum products, other than fuels and lubricants – this includes hydraulic fluids and electrical oils even when of non-petroleum origin (C10M).)
INVENTORS:
LUEGO CARLOS ALBERTO
CAPOBIANCO GINO
OTANI CHOYU
POLIDORO HEITOR AGUIAR
OTANI SATIKA
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Patent number: BR200100257-A;BR200100257-B1
PATENT STATUS:
GRANTED
FOR ADDITIONAL INFORMATION:
parcerias@inova.unicamp.br
+55 (19) 3521-5207 / 2607
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