Standard Test Method for Thermal Oxidative Resistance of Carbon Fibers
5.1 The test is used to determine the oxidative resistances of carbon fibers as a means of selecting the most stable fibers for incorporation in high-temperature fiber-reinforced composite systems. It can be used for quality control, material specification, and for research and development of improved carbon fibers. Factors that influence the oxidative resistance and should be reported are fiber identification, precursor type, fiber modulus, and any information on impurities, particularly metals. Also note that the presence of finish on the fiber can affect the oxidative resistance, and thus, alternative specimen preparations that enable the evaluation of finish effects are included.
1.1 This test method covers the apparatus and procedure for the determination of the weight loss of carbon fibers, exposed to ambient hot air, as a means of characterizing their oxidative resistance.
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units which are provided for information only and are not considered standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard information, see Section 8.
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