A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 60-56-0, Name is 1-Methyl-1H-imidazole-2(3H)-thione, molecular formula is C4H6N2S. In an article, author is Shi, SH,once mentioned of 60-56-0, COA of Formula: C4H6N2S.
Development and characterization of imidazole derivative cured bisphenol A epoxy materials for flip-chip underfill applications
This paper is targeted to provide underfill manufacturers and electronic packaging companies with general information about imidazole derivative cured bisphenol A epoxy materials. Four selected imidazole derivatives and one bisphenol A epoxy resin were investigated in this paper. Differential Scanning calorimetry (DSC) was used to study the curing kinetics of the prepared formulations and glass transition temperature (Tg) of the cured formulation. Thermo-Mechanical Analyzer (TMA) was used to investigate the heat flex temperature and coefficient of thermal expansion (CTE). Dynamic-Mechanical Analyzer (DMA) was used to measure the storage modulus (E’) and cross-linking density (rho) at the temperature range from 25 degrees C to 250 degrees C of the cured materials. A rheometer was used to investigate the viscosity (eta) of these formulations. The effects of the curing agent type and concentration on the curing kinetics, Tg, CTE, E’, rho, and eta were then investigated. The correlation between CTE (above Tg) and crosslinking density was examined and discussed.
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