Composition dependence of tensile yield stress in filled polymers

Turcsányi, Béla; Pukánszky, Béla; Tüdős, F.

doi:10.1007/bf01730605

Cited by 313 publications

(260 citation statements)

References 5 publications

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“…Thus, the efficiency of stress transfer between the particles and the polymer becomes important to determine the dominant effect of the particles on the properties of the composite. Pukanszky et al [43,44] have proposed a semi-empirical relationship for predicting the strength of composite materials, which purports to take into account the interfacial bonding between the nanoparticles and the polymer:…”

Section: Compressive Propertiesmentioning

confidence: 99%

Toughened carbon fibre-reinforced polymer composites with nanoparticle-modified epoxy matrices

et al. 2016

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In the current work, the microstructure and fracture performance of carbon fibre-reinforced polymer (CFRP) composites based upon matrices of an anhydride-cured epoxy resin (formulated with a reactive diluent), and containing silica nanoparticles and/or polysiloxane core-shell rubber (CSR) nanoparticles, were investigated. Double cantilever beam tests were performed in order to determine the interlaminar fracture energy of the CFRP composites, while the single-edge-notched bend specimen was employed to evaluate the fracture energy of the bulk polymers. The fracture energy of the bulk epoxy polymers increased from 173 J/m 2 for the unmodified polymer to a maximum of 1237 J/ m 2 with the addition of 16 wt% of CSR nanoparticles. The toughening mechanisms were identified as (a) localised plastic shear yielding and (b) cavitation of the CSR particles followed by plastic void growth of the matrix. The steady-state propagation value of the interlaminar fracture energy of the CFRP composites increased with increasing nanoparticle concentration, from 1246 J/m 2 for the unmodified epoxy matrix to a maximum of 1851 J/m 2 with 4 wt% of silica nanoparticles and 8 wt% of CSR nanoparticles. Crack growth in the CFRP composites was dominated by fibre-bridging toughening mechanisms. The efficiency of the transfer of toughness from the bulk polymers to the carbon fibre composites was considered. The measured fracture energy of both bulk and composite materials decreased at a test temperature of -80°C, compared with room temperature, i.e. 20°C. Nevertheless, the toughening effects of both the silica and CSR nanoparticles on the bulk epoxy polymers and the CFRP composites, compared with the unmodified epoxy polymers, were still evident even at the lower temperature. Indeed, the toughening effect of the silica nanoparticles was greater at -80°C than at room temperature.

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Section: Compressive Propertiesmentioning

confidence: 99%

Toughened carbon fibre-reinforced polymer composites with nanoparticle-modified epoxy matrices

et al. 2016

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“…[43]. In the present work, the yielding model of Pukansky [44] was used, in which the yield stress terms were replaced by hardness:…”

Section: Microhardness Of Nanocompositesmentioning

confidence: 99%

UV-nanoimprint lithography and large area roll-to-roll texturization with hyperbranched polymer nanocomposites for light-trapping applications

Lazo

Teuscher

Leterrier

et al. 2012

Solar Energy Materials and Solar Cells

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“…The strength of interfacial adhesion can be expressed quantitatively by a simple 12 model developed earlier for the description of the composition dependence of the tensile yield stress and tensile strength of particulate filled composites [8,9,43].…”

Section: Interfacial Adhesion Reinforcementmentioning

confidence: 99%