Study on the co-curing mechanism of hydrogenated carboxyl nitrile butadiene rubber and bismaleimide resin
The bismaleimide resin(BMI)was used as the base phase,carbon fiber as the reinforcement,and hydrogenated carboxyl nitrile butadiene rubber(HXNBR)as the viscoelastic material.Molecular dynamics simulation was used to reveal the co-curing mechanism of HXNBR and BMI at 180℃.By changing the content of silane coupling agent KH550 and processing assistant WB212,a BMI embedded co-curing damping composite(ECCDS)with excellent properties was designed.The vulcanization test result indicated that the addition of KH550 and WB212 increased the degree of crosslinking and vulcanization property of the damping material.The infrared spectrograph and micromorphology analysis confirmed that a large number of new chemical functional groups were generated between HXNBR and BMI,and an interpenetrating mesh structure was formed,which significantly improved the interlayer bonding properties of the composite material.
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