INVESTIGADORES
MAURI Adriana Noemi
artículos
Título:
Epoxy Networks based on solutions of silsesquioxanes functionalized with 3-glycidoxypropyl groups in diglycidylether of bisphenol A (DGEBA)
Autor/es:
ADRIANA MAURI; CARMEN RICARDDI; ROBERTO JJ WILLIAMS
Revista:
POLYMER BULLETIN
Editorial:
SPRINGER
Referencias:
Año: 2000 vol. 45 p. 523 - 530
ISSN:
0170-0839
Resumen:
In previous publications we reported the synthesis and characterization of
silsesquioxanes derived from the hydrolytic condensation of (3-glycidoxypropyl)
trimethoxysilane (GPMS) using diglycidylether of bisphenol A (DGEBA) as a solvent
[1,2]. The reaction product has aliphatic epoxy groups supplied by the silsesquioxane
and aromatic epoxy groups supplied by the solvent. Solutions containing 0, 25 and
50% aliphatic epoxy groups, were cured with different hardeners:
methyltetrahydrophthalic anhydride (MTHPA), ethylenediamine (EDA) and
benzyldimethylamine (BDMA). Silsesquioxane-modified epoxy networks showed a
significant increase in the elastic modulus in the rubbery state, the abrasion resistance
and the development of strain hardening in uniaxial compression tests.
