The effect of stoichiometric ratio of curing agent on the mechanical properties of epoxy resins
The modulus of matrix plays an important role in the mechanical properties of carbon fiber/epoxy composites. To observe the influence of type and content of curing agent on the modulus of epoxy, TDE-85 epoxy and two different types of curing agent, DETDA and DDS were used in this experiment. According to a calculation of curing agent, several samples with equivalence ratios of lively hydrogen equivalent and epoxy equivalent weight r as 0.5,0.75,1,1.25 were prepared. The tensile test and dynamic mechanical analyses were carried out. The results displayed that the modulus of TDE-85 was the lowest when ratio of lively hydrogen equivalent weight and epoxy equivalent weight was 1. On basis of the experiment result, the carbon fiber/epoxy composites with different modulus of matrix will be obtained to evaluate the effect of matrix.s modulus on the mechanical properties of the composites.
epoxy curing agent crosslinking network modulus
Wang Peng Sui Gang Yang Xiaoping
State Key Laboratory of Organic-Inorganic Composites,Beijing University of Chemical Technology, Beij State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Bei
国际会议
天津
英文
1-8
2011-10-26（万方平台首次上网日期，不代表论文的发表时间）