WANG Quan, SHI Tiejun, ZHANG Yan, et al. Latent curing of polybiguanide/epoxy resin[J]. CIESC Journal, 2015, (1): 464-470.DOI: 10.11949/j.issn.0438-1157.20140904.
A new latent curing agent for epoxy resin was synthesized via melted polycondensation of dicyandiamide (DICY) and hexamethylenediamine. The structure of the curing agent was analyzed with FTIR
XPS
1H NMR. The optimum ratio
suitable curing temperature and curing kinetic parameters of this epoxy resin curing system were studied with DSC. The phase structure of the cured epoxy resin was investigated with XRD. The thermostability of the cured epoxy resin was obtained by TG. Comparing with the DICY/EP curing system
curing temperature dropped by nearly 70℃. Latency performance was fine as curing degree was less than 10% within 30 days. Thermostability was nice as thermal decomposition temperature exceeded 300℃.