Kinetics and mechanism of high-temperature pyrolysis of polyacrylonitrile

Carbon fibres

“…At the same time, the high elastic and strength characteristics of carbon fibre composites with a carbon matrix in combination with their unique heat stability (in non-oxidizing media), chemical resistance and useful tribological characteristics mean that they have prospective applications in various other fields, from the manufacture of highly accurate casting moulds with long service life to the replacement of asbestos composites in Influence of testing temperature on strength (1) and modulus of elasticity (2) of carbon-carbon composite [252].…”

“…2. 43 Influence of oxidized PAN fibre treatment temperature on width (1) and thickness (2) of carbon fibre crystallite.…”

“…As can be seen from Table 2.15, the process of heteroatom removal in carbonization of oxidized PAN fibres over wide ranges of temperature and rate of heating is characterized by low effective activation energy and zero or near-zero apparent order of the reaction. These features arise from an effective autocatalysis, which is realized under the influence of molecular sections containing polyconjugated carbon-carbon bonds [1,2]. The catalytic nature of the process influences its energetics and helps to explain the preferential proceeding of condensation processes, starting from a certain stage, and therefore the delay in destruction processes.…”

“…The advantages of Influence of relative content of organic fibres on impact toughness of carbon plastic with high-strength (1) and high-modulus (2) fibres [245].…”