High-performance bismaleimide resins with low cure temperature for resin transfer molding process
HIGH PERFORMANCE POLYMERS(2017)
摘要
High-performance bismaleimide resin systems (here coined LBMI resin series) based on 4,4-bismaleimidodiphenylmethane, 2,4-bismaleimidotoluene, bisphenol A bisallyl ether, 4,4-bis[2-(1-propenyl)phenoxy]benzophenone, 2-allylphenol, and cumene hydroperoxide for resin transfer molding (RTM) process with low cure and post-cure temperatures (180 degrees C) have been developed. Considering the optimum formulation conditions, the injection temperature is in the range of 70-160 degrees C, and the pot life at 100 degrees C is determined to be approximately 100 min. After curing at 180 degrees C for 6 h, the resins exhibit high thermal resistances, excellent mechanical properties, and exceptionally low dielectric loss. Among others, these findings render the materials suitable for the use as high-performance resins for the production of advanced composites via RTM technique and with low cure temperatures.
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关键词
Bismaleimide,resin transfer molding,low cure temperature
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