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Structure–property Relations of 55 Nm Particle-toughened Epoxy by Quyen-Huyen Le; Hsu-Chiang Kuan; Jia-Bin Dai; Izzuddin Zaman; Lee Luong; Jun Ma is a Materials Science article available to read on EtoBox.

What is Structure–property Relations of 55 Nm Particle-toughened Epoxy about?

a b s t r a c t 55-nm rubber particles significantly toughened two epoxy systems without loss of Young's modulus, tensile strength and glass transition temperature. Transmission Electron Microscopy (TEM) showed that the nanoparticles are uniformly dispersed in matrix and have blurred interface with epoxy. 5 wt% rubber nanoparticles increased the critical strain energy release rate (G 1c ) of Jeffamine D230 (J230)-cured epoxy from 175 J/m 2 to 1710 J/m 2 , while the 10 wt% increased G 1c of diaminodiphenyl sulfone (DDS)-cured epoxy from 73 J/m 2 to 696 J/m 2 . This is explained by comparing the surface-surface interparticle distance and total particle surface of nanocomposites with those of composites. The higher the matrix stiffness, the more nanoparticles needed for toughening. Although the 10 wt% J230-cured nanocomposite showed a 50% larger size of stress-whitened zone than the 5 wt% J230-cured nanocomposite, the 5 wt% nanocomposite showed a higher toughness. These nanoparticles were found to pose barriers to the vibration of crosslinked matrix molecules, leading to higher glass transition temperatures. While the matrix shear banding caused by nanoparticle expansion and growth is

Who reads Structure–property Relations of 55 Nm Particle-toughened Epoxy?

Author

Quyen-Huyen Le; Hsu-Chiang Kuan; Jia-Bin Dai; Izzuddin Zaman; Lee Luong; Jun Ma

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0032-3861)

Published

2010

Language

EN

Field

Materials Science (Physical Sciences)