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A series of novel resin systems were prepared using a novel thermosetting bismaleimide containing phthalide cardo structure (BMIP), diglycidyl ether of bisphenol A epoxy resin (DGEBA) and 4,4'-diamino diphenyl sulfone (DDS). The cure mechanism of the mixture was studied by Fourier transform infrared (FTIR) spectroscopy and differential scanning calorimetry (DSC). The FTIR results demonstrated the...
The precipitates and precipitation behavior in Al–0.16wt.%Zr–0.30 wt.%Yb–0.18 wt.%Cr alloy at 500°C is studied. By adding Zr, Yb and Cr in combination, a relatively high density of coherent and well-dispersed L1 2 -structured (Al, Cr) 3 (Zr, Yb) dispersoids are uniformly precipitated during homogenization at 500°C. These dispersoids are coherent with the sizes remaining essentially...
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