Effect of Molecular Orientation on the Fracture Behavior of Carbon Black-Filled Natural Rubber Compounds
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TLDR
In this paper, the fracture behavior of carbon black-filled natural rubber compounds, differing in filler content, was studied performing tensile tests in biaxial loading conditions, using a central notched cross-shaped specimen.Abstract:
The fracture behavior of carbon black-filled natural rubber compounds, differing in filler content, was studied performing tensile tests in biaxial loading conditions, using a central notched cross-shaped specimen. The test consisted of two steps: a drawing step was initially performed loading the specimen in the direction parallel to the notch plane, up to different draw ratios, and then the specimen was loaded in the direction normal to the notch plane up to fracture. Using a fracture mechanics approach, the fracture toughness was evaluated as a function of the draw ratio applied in the drawing step. A correlation between the fracture phenomenology observed and molecular orientability and orientation was attempted.read more
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References
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Stress-Induced Crystallization around a Crack Tip in Natural Rubber
TL;DR: In this paper, X-ray diffraction around cracks in a cis-1,4-polyisoprene sample drawn at low ratio, λ < 3.5, was used to measure the local draw ratio and then the local stress around the crack tip.
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Transition between Cohesive and Interfacial Failure in a Laminate
TL;DR: A theoretical condition for deflexion of Griffith crack meeting a plane perpendicular interface in a thick plate of uniform elastic properties was derived in this paper, which suggests that a short crack should be diverted along the interface when R ad co /4π(1 − V 2 )
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Reinforcement of natural rubber
Liliane Bokobza,Olivier Rapoport +1 more
TL;DR: In this article, a molecular analysis based on measurements of chain orientation was performed on filled natural rubber and showed that at intermediate strains, the increase in the moduli can be explained by the inclusion of rigid particles in the soft matrix and from molecular interactions between the rubber and the filler.
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Molecular Aspects of the Fatigue and Fracture of Rubber
TL;DR: A short review highlighting molecular mechanisms controlling the fracture of rubber and rubber reinforcement, with emphasis on the importance of mechano-chemistry, was published in Rubber Chemistry and Technology in 1991 as mentioned in this paper.
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Tear Strength of Carbon-Black-Filled Compounds
D. K. De,A. N. Gent +1 more
TL;DR: In this paper, the authors measured the tear strength of carbon-black-filled compounds over a wide range of temperature ranges and found that the strength of the tear is strongly dependent on the type of carbon black, and sensitive to the particular elastomer used.