Study on preparation and embrittlement damage of iron powder/carbon fiber reinforced resin composite materials
A nanoiron(Fe)powder modified with coupling agent was mixed with pre-treated carbon fibers,immersed in epoxy resin matrix and stirred to prepare nano Fe powder/carbon fiber reinforced resin composite materials.The embrittlement damage behavior of the composite materials was studied under high-temperature aging and water immersion aging environments.The re-sults showed that resin would undergo embrittlement damage after high-temperature aging and water immersion aging,and the ad-dition of carbon fiber and nano Fe powder would have a certain inhibitory effect on this damage;the tensile strength and fracture toughness of the nano Fe powder/carbon fiber reinforced composite materials with 3.0％carbon fiber by mass fraction decreased slightly as the high-temperature aging time prolonged after adding 4.0％nano Fe powder by mass fraction,at the same time,the resin still adhered tightly to the nano Fe powder and carbon fiber after embrittlement damage;and the nano Fe powder/carbon fi-ber reinforced composite material with 3.0％carbon fiber and 4.0％nano Fe powder by mass fraction still maintained a high level of fracture toughness after water immersion aging.
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