✦ LIBER ✦

Carbonization of high-temperature resins

✍ Scribed by Satya B. Sastri; James P. Armistead; Teddy M. Keller

Publisher: Elsevier Science
Year: 1993
Tongue: English
Weight: 662 KB
Volume: 31
Category: Article
ISSN: 0008-6223
DOI: 10.1016/0008-6223(93)90116-r

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✦ Synopsis

The pyrolysis of two high-temperature thermosetting polymers has been studied as potential carbon precursor materials. Both resins are easily processed into shaped and void-free components.

The polymers and corresponding pyrolysates exhibit outstanding thermal properties. As the heat treatment is progressively increased, a carbonaceous mass is produced yielding a high char yield. As the pyrolysis temperature was raised to 7OO"C, the density increased and remained at a fairly constant value to I2OO"C. Further heat treatment to 2700°C resulted in a reduction in the density. Shrinkage appears to occur at about the same rate as free volume is being produced within the developing pyrolysates causing collapse to essentially microporous systems.

Kev Words-Carbon-carbon comDosites. urocessability, shrinkage, thermal and oxidative stabilities, de&ity, char yield, pyrolysate.

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