Studies on synthesis and characterization of hydroxyl-terminated polydimethylsiloxane-modified epoxy bismaleimide matrices

This work reports the development of hydroxyl-terminated polydimethylsiloxane (HTPDMS)-toughened tetraglycidyl diaminodiphenyl methane (TGDDM) epoxy matrix systems. The siliconized epoxy systems were further modified with various percentages of (5, 10 and 15 wt%) 10-phenyl-phenonoxaphosphine-3,8-di(...

Full description

Saved in:
Bibliographic Details
Published in:High performance polymers 2013-09, Vol.25 (6), p.622-633
Main Authors: Selvaganapathi, A., Alagar, M., Gnanasundaram, P.
Format: Article
Language:English
Subjects:
Bismaleimides
Epoxy resins
Flexural strength
Modulus of rupture in bending
Reduction
Siloxanes
Tensile strength
Thermal properties
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This work reports the development of hydroxyl-terminated polydimethylsiloxane (HTPDMS)-toughened tetraglycidyl diaminodiphenyl methane (TGDDM) epoxy matrix systems. The siliconized epoxy systems were further modified with various percentages of (5, 10 and 15 wt%) 10-phenyl-phenonoxaphosphine-3,8-di(2-hydroxy-3-(p-male-imidobenzoyloxy)propyl) ester-10-oxide (EPBMI) and cured by diaminodiphenyl sulfone. Thermal, mechanical and morphological properties of the prepared samples were studied by standard methods. In comparison with the unmodified epoxy resin, HTPDMS-incorporated TGDDM resin showed increased impact strength with a reduction in tensile strength, flexural strength and glass transition temperature (T g). But in the case of bismaleimide (BMI; EPBMI)-incorporated epoxy resin, tensile strength, flexural strength and T g showed an increasing trend. However, the introduction of both siloxane and BMI into epoxy influences the mechanical and thermal properties according to their percentage content. The morphology of the silconized and the BMI-modified epoxy systems was also studied by scanning electron microscopy.
ISSN:0954-0083
1361-6412
DOI:10.1177/0954008313477666