A non-contacting electrical resistivity measurement device was used for measuring the electrical resistivity of cement paste incorporated with retarder.The hydr
A Kind of homogeneous resin, which can be used as thermal resistant adhesive and matrix for composite,was prepared by bis(4-maleimidophenyl)methane (BMI), 4,4&#
λ-MnO2 was prepared by column method from normal spinel LiMn2 O4 with purity of 99.38%.The influence of LiMn2 O4 grain size and acidity of leaching solution on