The electrochemical
corrosion behavior of
carbon fiber/
vinyl ester resin composite (CF/VE), which was used for sucker
rods in the oil field, was studied under the simulated service conditions in the oil field (3%(mass fraction) NaCl aqueous solution immersion at 65℃).
Galvanic corrosion experiment between the CF/VE composite and the alloy used as joints linking the composite sucker rods and metal suckers was performed. Meanwhile, the effect of galvanic corrosion on the
absorption behavior and the static and dynamic mechanical properties of the CF/VE composite was investigated. The results show that in a polarization system, there will be a cathode reaction of oxygen absorption on the surface of the composite and an anode reaction which is mainly depended on the concentration of the hydroxyl (OH-). A slight acceleration of the absorption behavior of the CF/VE composite is caused by the galvanic corrosion. In addition, the galvanic corrosion results in more decrease in the interlaminar shear strength (ILSS) and flexural strength of the CF/VE composite because of the occurrence of hydroxyl at the interface of the CF/VE composite.