Toughening mechanism of epoxy modified with CTBN elastomer adhesive j oints
作者： M. Ochi , K. Mimura , H. Motobe
关键词: Toughness 、 Phase (matter) 、 Cavitation 、 Bond strength 、 Elastomer 、 Shear (sheet metal) 、 Composite material 、 Epoxy 、 Materials science 、 Adhesive 、 Materials Chemistry 、 Mechanics of Materials 、 General chemistry 、 Surfaces, Coatings and Films 、 Surfaces and Interfaces
摘要: The effect of modification with CTBN on the bonding properties an epoxy system cured 1-o-tolylbiguanide (TBG) was investigated and compared results ethylenediamine (EDA). TBG used as a model dicyandiamide, which is typical latent curing agent. bond strength toughness TBG-cured increased considerably addition modifier, whereas values for EDA-cured were not influenced by modification. In former system, cavitation CTBN-dispersed phase plastic deformation matrix observed in vicinity crack tip. These phenomena system. addition, crosslink density much lower than that Thus, it concluded high modified caused also shear yielding low-crosslinked matrix.
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