Study on Mechanical Properties and Durability of CFRP Reinforcement for Marine Environments
The study prepared carbon fiber fiber/epoxy resin(CFRP reinforcement)composites,studied the mechanical properties of CFRP reinforcement,and analyzed the durability of CFRP reinforcement in deionized water and salt solution erosion environments.The results show that CFRP reinforced composites have excellent mechanical properties.After impregnating CFRP reinforced composites with deionized water and NaCl solution,the mass change rate of CFRP reinforced composits will continuously increase with the prolongation of time and the increase of temperature.The interlayer shear strength retention rate and bending strength retention rate will continuously decrease with the prolongation of time and the increase of temperature.The influence of NaCl solution and high temperature on mechanical properties is greater.However,after immersion at 70℃ for 90 days in NaCl solution,the interlayer shear strength retention and bending strength retention of CFRP reinforced composites are 88.6％and 85.7％,respectively,indicating that CFRP reinforced composites can still maintain high mechanical properties in water or salt solution corrosive environments.Therefore,CFRP reinforced composites have good durability.
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