Sie befinden Sich nicht im Netzwerk der Universität Paderborn. Der Zugriff auf elektronische Ressourcen ist gegebenenfalls nur via VPN oder Shibboleth (DFN-AAI) möglich. mehr Informationen...
Morphologies and thermal properties of alkoxysilane terminated polyurethane/epoxy resin composites
Ist Teil von
Cai liao gong cheng = Journal of materials engineering, 2010-11 (11), p.60-65
Erscheinungsjahr
2010
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
Two kinds of alkoxysilane terminated urethane oligomers (PUSi), polytetramethyleneoxide glycol (PTMEG) urethane oligomer (PTSi) and polycaprolactone (PCL) urethane oligomer (PLSi), were directly synthesized via reacting diols of PTMEG and PCL with isocyanatopropyltriethoxysilane (ICPTES), respectively. PUSi/epoxy composites were prepared via sol-gel process and the reaction of amine curing agent and epoxy resin. The structure of PTSi and PLSi were characterized by FTIR. The morphology and thermal properties of the composites with different ratio of PLSi and PTSi were investigated with SEM, DMTA and TGA analysis. The results showed that a "sea-island" phase structure was formed in PUSi/epoxy composites, and that the compatibility between PUSi and epoxy was improved with adding PLSi. And also, when the mass ratio of PLSi and PTSi was 1:1, the PUSi/epoxy system had a highest temperature value at 5% mass loss, reaching to 275 degree C, an increase of 100 degree C when compared with that of neat amine-cured epoxy