The use of 1,5-naphthalenediamine (ND) as curingagents for epoxy blends was studied. The epoxy monomerwas a standard diglycidyl ether of bisphenol Awhile as modifier a laboratory made copolyethersulphone(coPES) was considered. The coPES was addedat three percentages: 10, 20, and 30% wt. The stiffstructure of ND increased both viscosity and glasstransition temperature of the blends. The blends curedby ND showed higher viscosity compared to resinscured by 3,30-diammino diphenylsulfone or 4,40-methylenebis(2,6-diethylaniline). Blends with higher coPEScontent (20 and 30% wt) showed viscosity fluctuationsuggesting phase separation initiation but the combinationof high viscosity and reactivity hindered thedemixing process. This effect resulted in single glasstransition for all formulations confirming the absenceof phase separation
Titolo: | Influence of 1,5-naphthalenediamine on thermomechanical properties of epoxy/Copolyethersulphone Blends |
Autori interni: | |
Data di pubblicazione: | 2013 |
Rivista: | |
Handle: | http://hdl.handle.net/20.500.11769/8804 |
Appare nelle tipologie: | 1.1 Articolo in rivista |