Formation of crust on natural rubber after ageing

Kamaruddin, Shamsul; Gac, Pierre-Yves Le; Marco, Yann; Muhr, Andreas

doi:10.1201/b11687-37

Cited by 2 publications

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“…Thermo-oxidative degradation of rubber components has been widely investigated in the literature [3][4][5][6][7][8][9][10]. Ageing could indeed induce severe modifications of the mechanical properties both in terms of constitutive response [11], failure properties under monotonic tension [12], crack propagation [13] and duration life [14].…”

Section: Scientific Backgroundmentioning

confidence: 99%

Investigation of thermo-oxidative ageing effects on the fatigue design of automotive anti-vibration parts

et al. 2018

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Abstract. Elastomeric parts found in automotive anti-vibration systems are usually massive. Ageing therefore leads to heterogeneous properties, usually induced by several mechanisms due to the availability, or not, of oxygen in the part's bulk. To better understand the effects of oxygen in the degradation process and on the fatigue properties, this paper aims at studying the ageing of a rubber material (semi-efficient vulcanization system) in aerobic (with oxygen) and anaerobic (without oxygen) conditions for a wide range of temperatures, relevant for under hood applications. The material studied here is a fully formulated compound NR/IR blend reinforced with carbon black. A specific protocol to perform ageing under anaerobic conditions was set up and validated. Numerous tests have been carried out to evaluate the consequences of ageing on monotonic tension and fatigue properties. A comparison of these consequences and of their kinetics is finally presented for ageing with or without oxygen.

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Section: Scientific Backgroundmentioning

confidence: 99%

Investigation of thermo-oxidative ageing effects on the fatigue design of automotive anti-vibration parts

et al. 2018

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“…Researchers have proposed several beneficial uses for waste tires, particularly since waste tires have the potential to be used as construction and building materials (due to their high strength and durability). Tests performed on a solid tire, produced in the 1920s and aged naturally in the woods for more than 80 years, have shown that whilst a crust had formed on the surface, the material located a few millimeters from the surface maintained the same properties as the natural rubber [ 7 ]. It is possible to infer that with the new additives used nowadays, tires are likely to have a higher durability, particularly if protected from contact with air and light.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigations on the Pull-Out Behavior of Tire Strips Reinforced Sands

Chen

Ferreira

et al. 2017

Materials

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Waste tires have excellent mechanical performance and have been used as reinforcing material in geotechnical engineering; however, their interface properties are poorly understood. To further our knowledge, this paper examines the pull-out characteristics of waste tire strips in a compacted sand, together with uniaxial and biaxial geogrids also tested under the same conditions. The analysis of the results shows that the interlocking effect and pull-out resistance between the tire strip and the sand is very strong and significantly higher than that of the geogrids. In the early stages of the pull-out test, the resistance is mainly provided by the front portion of the embedded tire strips, as the pull-out test continues, more and more of the areas towards the end of the tire strips are mobilized, showing a progressive failure mechanism. The deformations are proportional to the frictional resistance between the tire-sand interface, and increase as the normal stresses increase. Tire strips of different wear intensities were tested and presented different pull-out resistances; however, the pull-out resistance mobilization patterns were generally similar. The pull-out resistance values obtained show that rubber reinforcement can provide much higher pull-out forces than the geogrid reinforcements tested here, showing that waste tires are an excellent alternative as a reinforcing system, regardless of the environmental advantages.

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Formation of crust on natural rubber after ageing

Cited by 2 publications

References 0 publications

Investigation of thermo-oxidative ageing effects on the fatigue design of automotive anti-vibration parts

Investigation of thermo-oxidative ageing effects on the fatigue design of automotive anti-vibration parts

Experimental Investigations on the Pull-Out Behavior of Tire Strips Reinforced Sands

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