One chemical approach using nitric acid as the solvent to decompose thermosetting epoxy resin was discussed. The samples were prepared by using different kinds of curing agents, namely polyamide (PA651), isophorone di...One chemical approach using nitric acid as the solvent to decompose thermosetting epoxy resin was discussed. The samples were prepared by using different kinds of curing agents, namely polyamide (PA651), isophorone diamine (IPDA), 4,4'-diaminodiphenylmethane (DDM) and 2-ethyl-4-methy-imidazole (EMI-2,4) and different kinds of epoxy resins, namely bisphenol-A epoxy resin(E-44), bisphenol-A epoxy resin(E-51), N,N,N',N' teraglycidy 4,4' diaminodiphenyl methane (AG-80) and diglycidyl-4,5-epoxycyclohexane-1,2-dicarboxylate (TDE-85). Their effects on decomposition rate were investigated and the decomposition products were analyzed by Infra-red (IR) spectra, and Gas Chromatography-Mass Spectrometry (GC-MS). Based on conclusions drawn from experiments, the mechanism of degrading thermosetting epoxy resin with nitric acid was envisaged tentatively.展开更多
基金Sponsored by the National Natural Science Foundation of China(Grant No.50973023and50773016)Program for New Century Excellent Talents in University(Grant No.NCET-09-0060)
文摘One chemical approach using nitric acid as the solvent to decompose thermosetting epoxy resin was discussed. The samples were prepared by using different kinds of curing agents, namely polyamide (PA651), isophorone diamine (IPDA), 4,4'-diaminodiphenylmethane (DDM) and 2-ethyl-4-methy-imidazole (EMI-2,4) and different kinds of epoxy resins, namely bisphenol-A epoxy resin(E-44), bisphenol-A epoxy resin(E-51), N,N,N',N' teraglycidy 4,4' diaminodiphenyl methane (AG-80) and diglycidyl-4,5-epoxycyclohexane-1,2-dicarboxylate (TDE-85). Their effects on decomposition rate were investigated and the decomposition products were analyzed by Infra-red (IR) spectra, and Gas Chromatography-Mass Spectrometry (GC-MS). Based on conclusions drawn from experiments, the mechanism of degrading thermosetting epoxy resin with nitric acid was envisaged tentatively.