Comprehensive study of thermal degradation behavior of carbon fiber flexible sucker rods: Product characteristics, kinetics and thermodynamics

Carbon fiber flexible sucker rods (CFSR) are important as an essential component of oilfield extraction and their potential energy resource after decommissioning is very important. This research presents a detailed examination of the pyrolysis kinetic triplets and product characterization of CFSR that used a thermogravimetric analyzer (TGA), thermogravimetric-Fourier transform infrared spectroscopy (TG-FTIR) and gas chromatograph-mass spectrometer (GC-MS). The results revealed that the CFSR reaction interval was between 240 and 550 degrees C. Model fitting and the Criado method were used to determine the reaction control mechanism, and the average activation energies obtained by four model-free methods were 201.52(FWO), 201.93(KAS), 217.96(FM), and 202.29(Starink) kJ/mol. The byproducts consist mainly of acids, aromatics and hydrocarbons. In addition, the regenerated carbon fibers have a smooth surface and almost no residual resin as the temperature climbs to 600 degrees C. The results of the study facilitate the process optimization of carbon fiber composites and provide theoretical guidance and data support for subsequent development and utilization.The results of the study facilitate the process optimization of carbon fiber composites and provide theoretical guidance and data support for subsequent development and utilization.

Automated summary

This study presents a detailed examination of the pyrolysis kinetic triplets and product characterization of carbon fiber flexible sucker rods (CFSR). The results facilitate the process optimization of carbon fiber composites and provide theoretical guidance and data support for subsequent development and utilization.