Mullins effect tear strength
WebMullins effect refers to the phenomenon that under large deformations, stiffness reaches the maximum for the first test compared to those in the following test at the same or even … WebIn most cases, the increase in the percentage of NBR with the presence of nano silica enhances hardness, modulus and toughness, however, it reduces tensile strength, tear strength and elongation at break. It was found that nano silica has a catalytic effect on the mixture, and NBR has a catalytic effect on the decomposition of NR.
Mullins effect tear strength
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Web12 apr. 2024 · This phenomenon has been proposed by Mullins 8 for about 50 years; however, there was still no consensus on the physical source and the mechanical model of Mullins. 9 Physical explanations of the Mullins effect included bond rupture, 10 molecules slipping, 11 filler rupture, 12 disentanglement, 13 and double-layer model. 14 WebThe result of Mullins effect of rubber composite filled with CaCO3 is in good agreement with the result of bound rubber: higher bound rubber leads to higher stress to pull the rubber composites.
Web17 iul. 2024 · The polyester prepolymer (Trademark H1342, viscosity 1100 mPa·s, density 1.25 × 10 3 kg·m −3, Shore A hardness 90 at 25 °C, tear strength 100 N/mm, tensile strength 47 MPa, gelation time 15 min, melting point 80 °C) was purchased from Huatian Rubber & Plastic Technology Co., Ltd., Zibo, China. WebLoading–unloading cycles showed a strong stress-softening (Mullins) effect, especially at 8.3 wt.% nanotubes ( Fig. 12.19B ), which is hardly explained by a hydrodynamical model [256], which could be related to some degree to CNT alignment occurring in …
The Mullins effect is a particular aspect of the mechanical response in filled rubbers, in which the stress–strain curve depends on the maximum loading previously encountered. The phenomenon, named for rubber scientist Leonard Mullins, working at the Tun Abdul Razak Research Centre in Hertford, can be idealized for many purposes as an instantaneous and irreversible softening of the stress–strain curve that occurs whenever the load increases beyond its prior all-time maxim… WebHindawi
Web30 oct. 2024 · The mechanical properties and strengthening effect of Mullins effect under compression mode were investigated systematically. Experimental results indicated that …
Web1 ian. 1986 · This finding led Mullins [2] to propose that a high strength rubber requires crosslinks consisting of weak co- valent bonds, whereas crosslinks consisting of strong … jerma985 susWebLoading–unloading cycles showed a strong stress-softening (Mullins) effect, especially at 8.3 wt.% nanotubes ( Fig. 12.19B ), which is hardly explained by a hydrodynamical model [256], which could be related to some degree to CNT alignment occurring in … jerma age 2022Web1 ian. 2012 · The full Mullins effect in the modified hyperelastic model, with stress softening and residual strain from the virgin state, is assumed to be a combination of damage, energy dissipation, and time ... jerma985 sus faceWebThe Mullins effect could be observed in the stress–strain curves of EMA/NBR TPV and EMA/NBR/ZDMA TPV during the uniaxial loading–unloading cycles. Compared with … jerma985 real nameWebThe gels can rapidly recover their stiffness and toughness by 76% and 60%, respectively, after 30 min of resting at room temperature. The possible toughening mechanisms and … jerma ageWeb21 sept. 2024 · Grand fir wood was even comparable with Norway spruce in the case of density and compressive strength. The thermal treatment resulted in a decrease in density, swelling, wettability, modulus of rupture, and toughness while increasing compressive strength. The effect of the thermal treatment was similar for all tested species. lambang letkolWeb1 oct. 2024 · Strengthening effect of mullins effect under tearing mode and its reversibility for zinc dimethacrylate-reinforced thermoplastic vulcanizates based on … jerma ai voice