Enhanced fracture toughness of epoxy resins with novel amine-terminated poly(arylene ether sulfone)-carboxylic-terminated butadiene-acrylonitrile-poly(arylene ether sulfone) triblock copolymers

2002 ◽  
Vol 84 (8) ◽  
pp. 1556-1565 ◽  
Author(s):  
H. R. Kim ◽  
B. Y. Myung ◽  
T. H. Yoon ◽  
K. H. Song
Keyword(s):  
Fracture Toughness ◽  
Epoxy Resins ◽  
Triblock Copolymers ◽  
Arylene Ether

Thermal Behavior of Epoxy Resins Cured with an Amine-Containing, Thermoplastic Poly(arylene Ether Sulphone)

1999 ◽  
Vol 19 (3) ◽  
pp. 161-174 ◽  
Author(s):  
Oriana Motta ◽  
Antonino Rocca ◽  
Valentina Siracusa ◽  
Domenico Acierno
Keyword(s):  
Differential Scanning Calorimetry ◽  
Thermal Behavior ◽  
Kinetic Parameters ◽  
Epoxy Resins ◽  
Curing Agent ◽  
Cure Process ◽  
Scanning Calorimetry ◽  
Arylene Ether ◽  
Diaminodiphenyl Methane ◽  
Residual Heat

Abstract In this paper we carried out the crosslinking of the tetraglycidyl-4,4′- diaminodiphenyl methane epoxy resin by using a reactive poly(arylene ether sulphone) as curing agent. Differential scanning calorimetry was used to derive the kinetic parameters of the reactions involved in the cure process and to evaluate the extent of the reaction as a function of time by measuring the total (ΔHr) and the residual heat(ΔHresid) of the resin at different curing times. A comparatively slower reaction was found to take place when the resin was cured with the poly(arylene ether sulphone) that when it was cured with the conventional curing agent 4,4′-diaminodiphenyl sulphone.

Fracture toughness improvement of epoxy resins with short carbon fibers

2014 ◽  
Vol 20 (4) ◽  
pp. 1220-1222 ◽  
Author(s):  
Wei Dong ◽  
Heng-Chang Liu ◽  
Soo-Jin Park ◽  
Fan-Long Jin
Keyword(s):  
Fracture Toughness ◽  
Carbon Fibers ◽  
Epoxy Resins ◽  
Short Carbon ◽  
Toughness Improvement

Material characterization of blended epoxy resins related to fracture toughness

2007 ◽  
Vol 42 (23) ◽  
pp. 9859-9866 ◽  
Author(s):  
Andi Haris ◽  
Tadaharu Adachi ◽  
Yu Hayashi ◽  
Wakako Araki
Keyword(s):  
Fracture Toughness ◽  
Material Characterization ◽  
Epoxy Resins

Unusual fracture behavior of nanoporous polymeric thin-films

2005 ◽  
Vol 880 ◽  
Author(s):  
Andrew V. Kearney ◽  
Reinhold H. Dauskardt ◽  
Carol E. Mohler ◽  
Michael E. Mills
Keyword(s):  
Fracture Toughness ◽  
Pore Size ◽  
Fracture Resistance ◽  
Fracture Behavior ◽  
Volume Fraction ◽  
Porous Solids ◽  
Void Size ◽  
Polymeric Thin Films ◽  
Arylene Ether ◽  
Ductile Polymer

AbstractWe present surprising evidence that the fracture resistance of porous forms of poly(arylene) ether (PAE) films exhibit increasing fracture resistance with increasing porosity. Such behavior is in stark contrast to the fracture toughness of porous solids, which typically decrease markedly with increasing porosity. A fracture mechanics based model is presented to rationalize the increase in fracture toughness of the voided polymer film and explain the behavior in terms of the pore size and volume fraction. It is shown that a certain dependence of pore size and volume fraction is required to increase rather than decrease the fracture resistance. The research has implications for the optimum void size and volume fraction needed to enhance the fracture resistance of porous ductile polymer films.

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