Experimental Modeling of Wear Behavior of Filled Elastomer SBR under Dry Friction-Influence of Roughness

The wear behaviour of a filled styrene butadiene rubber (SBR) is investigated in this paper. The material contact used is plan /plan with a hard steel XC38. The influence of tribological parameters such as type contact (contact plan/plan under dry friction), relative motion between the contact surfaces (rotational disc/fixed elastomer sample), topography of the surface contact (roughness), loading (normal load or contact pressure), sliding friction and operating time or number of cycles is investigated. The highlighting of these parameters influence and analysis results permits us to formulate a wear model for the filled elastomer SBR. The model is based on the Archard law developed for metallic materials. The modification concerns the introduction of material parameters to take accounts the hyperelastic behaviour of elastomer due to the presence of amorphous phase. Particular interest is given to the influence of the surface state of the indenter given by the counterface arithmetic roughnessRaon the weight loss of the elastomer due to the wear phenomena. For a lower value (little to 6.3μm) of the arithmetic roughness, the weight loss is insignificant for different contact pressure and various sliding speeds. This effect is more noticeable at higher values of roughness and dependent on other tribological parameters. This results comfort other conclusion on the literature that express the influence of roughness by the geometric parameters of the micro-waves in the surface. The effects of the roughness can be explained by the ratio between the amplitude and wavelength of the corrugation. Indeed, we relate the roughness influence at the strain energy restored by material hyperelastic which also is, necessarily, a function of the velocity sliding and pressure contact.

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Friction and Wear Pattern of Silica-Reinforced Styrene-Butadiene Rubber (SBR) in Sliding Contact with a Blade Indenter

Lubricants ◽

10.3390/lubricants9110110 ◽

2021 ◽

Vol 9 (11) ◽

pp. 110

Author(s):

Budi Setiyana ◽

Muhammad Khafidh ◽

Mohammad Tauviqirrahman ◽

Rifky Ismail ◽

Jamari ◽

...

Keyword(s):

Coefficient Of Friction ◽

Friction And Wear ◽

Sliding Friction ◽

Styrene Butadiene Rubber ◽

Butadiene Rubber ◽

Stick Slip ◽

Wear Pattern ◽

Significant Difference ◽

Styrene Butadiene ◽

Wet Contact

This study investigated the friction and wear pattern of silica-reinforced Styrene-Butadiene Rubber (SBR) in sliding friction with a steel blade indenter. The experiments were conducted using a pin-on-disc tribometer at various applied loads and examined under dry and wet contact conditions. Analysis was focused on investigating the coefficient of friction and length of wear pattern spacing. Related to coefficient of friction identification, the abrasion theory was applied here. In addition, the stick-slip theory to identify the wear pattern spacing was also applied. Results of the experiments show that the overall coefficient of friction (COF) decreases along with the increasing applied loads. The COF in wet conditions is much lower at the beginning of sliding time than the COF in dry conditions. The wear pattern spacing increases with increasing loads. However, it seems that there is no significant difference in pattern spacing between the dry and wet contact condition. In general, the experimental results agree qualitatively with the analytical results.

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Design and development of a new portable test setup to study friction and wear

Proceedings of the Institution of Mechanical Engineers Part J Journal of Engineering Tribology ◽

10.1177/1350650119867795 ◽

2019 ◽

Vol 234 (5) ◽

pp. 730-742

Author(s):

Anahita Emami ◽

Seyedmeysam Khaleghian ◽

Tyler Bezek ◽

Saied Taheri

Keyword(s):

Friction And Wear ◽

Sliding Friction ◽

Normal Load ◽

Substrate Surface ◽

Wear Test ◽

Wear Testing ◽

Styrene Butadiene Rubber ◽

Butadiene Rubber ◽

Sample Holder ◽

Test Setup

In this paper, a novel portable sliding friction and wear test rig is introduced. Unlike other laboratory-based test setups, this setup can be used for both indoor and outdoor experiments. There is also no limitation on the size and type of the substrate surface that can be used for the friction and wear test in contrast to typical test rigs, which have some limitations for the size and type of substrate surface. A small six-wheel ground robot is developed to drag the sample on an arbitrary surface for a desired distance and velocity. A ground robot is an unmanned ground vehicle, capable of driving on the ground without humans on board. The speed of this robot can be measured and controlled precisely. The nominal normal load is adjusted using dead weights placed on the sample holder and the friction force is measured using a load cell. An adjustable sample holder was also designed and built to hold different-size specimens. The results of styrene–butadiene rubber block sliding on an asphalt track are presented to validate the test setup and illustrate the potential of the system for friction and wear testing. In addition, the effect of sliding velocity on the friction and wear is studied, and the correlation between the wear rate and the friction coefficient is investigated. These experimental results can be used to estimate the friction and life span of a tire tread compound on the real asphalt road. Finally, the formation of abrasion pattern observed on the rubber surface sliding on an asphalt track is discussed, which provides an insight into the understanding of dominant wear mechanism of tire tread compound on typical asphalt surfaces.

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Design and Preparation of Cross-Linked Polystyrene Nanoparticles for Elastomer Reinforcement

Journal of Nanomaterials ◽

10.1155/2010/352914 ◽

2010 ◽

Vol 2010 ◽

pp. 1-8 ◽

Cited By ~ 5

Author(s):

Ming Lu ◽

Jianjun Zhou ◽

Liansheng Wang ◽

Wei Zhao ◽

Yonglai Lu ◽

...

Keyword(s):

Spherical Shape ◽

Nano Particles ◽

Styrene Butadiene Rubber ◽

Butadiene Rubber ◽

Polystyrene Nanoparticles ◽

Filled Elastomer ◽

Tremendous Amount ◽

The Cross ◽

Elastomer Composites ◽

Styrene Butadiene

Cross-linked polystyrene (PS) particles in a latex form were synthesized by free radical emulsion polymerization. The nano-PS-filled elastomer composites were prepared by the energy-saving latex compounding method. Results showed that the PS particles took a spherical shape in the size of 40–60 nm with a narrow size distribution, and the glass-transition temperature of the PS nanoparticles increased with the cross-linking density. The outcomes from the mechanical properties demonstrated that when filled into styrene-butadiene rubber (SBR), nitrile-butadiene rubber (NBR), and natural rubber (NR), the cross-linked PS nano-particles exhibited excellent reinforcing capabilities in all the three matrices, and the best in the SBR matrix. In comparison with that of the carbon black filled composites, another distinguished advantage of the cross-linked PS particles filled elastomer composites was found to be light weight in density, which could help to save tremendous amount of energy when put into end products.

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Assessing the Mechanical Properties of Hyperelastic Composite Materials with Small Additions of Disperse Mineral Fillers. Part 1. Approximation of the Potential of the Hyperelastic Matrix

International Polymer Science and Technology ◽

10.1177/0307174x1704400806 ◽

2017 ◽

Vol 44 (8) ◽

pp. 29-32

Author(s):

A.N. Vlasov ◽

D.B. Volkov-Bogorodskii ◽

Yu.N. Karnet ◽

Yu.A. Gamlitskii ◽

V.I. Mudruk

Keyword(s):

Contact Layer ◽

Styrene Butadiene Rubber ◽

Butadiene Rubber ◽

Filled Elastomer ◽

Rubber Compounds ◽

Deformation Properties ◽

Pure Matrix ◽

Linear Effects ◽

Mineral Fillers ◽

Styrene Butadiene

The development of a procedure for assessing the effective deformation properties of filled, hyperelastic polymer composites (chiefly, rubber compounds) is presented. The rigid interphase contact layer is taken into account in the model of the elastomer composite. The filled elastomer can be regarded as a three-component system consisting of: filler particles (of different size); an interphase layer, which can be regarded as part of the modified matrix; the ‘pure’ matrix. In this first part of this study, the general organisation of the investigation is described, a model of the filled elastomer composite is formulated, and the problem of identifying the properties of the hyperelastic matrix is solved on the basis of a potential taking into account the non-linear effects of change in the rigidity of the polymeric material under elongation. The possibility of using the developed procedure to describe the deformation properties of the unfilled vulcanisate of styrene butadiene rubber, i.e. the ‘pure’ matrix, is also shown. The calculated deformation curve coincides completely with the experimental curve when the developed method is used to determine the coefficients of the equations.

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Tribological and Viscoelastic Behaviour of Carbon Black Filled Rubber

ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis, Volume 1 ◽

10.1115/esda2010-24547 ◽

2010 ◽

Cited By ~ 1

Author(s):

Bohdana Marvalova ◽

Iva Petri´kova´ ◽

David Cirkl

Keyword(s):

Carbon Black ◽

Sliding Friction ◽

Tensile Tests ◽

Mechanical Analysis ◽

Styrene Butadiene Rubber ◽

Butadiene Rubber ◽

Tribological Behaviour ◽

Rate Dependent ◽

Filled Rubber ◽

Styrene Butadiene

The paper describes a complex experimental research of tribological and mechanical properties of styrene-butadiene-rubber (SBR) filled with carbon black. Tribological properties of SBR rubber material are investigated experimentally using a home made device of ball-on-disc type. The response of SBR in sliding friction depends on sliding speed and on the loading force. The rate-dependent behaviour of carbon-black filled rubber is investigated in tensile tests with different loading rates and in relaxation tests. The viscosity-induced rate-dependent effects are described. The storage and loss moduli and phase angle δ dependency on different amplitudes and frequencies are determined by strain controlled dynamical mechanical analysis. The temperature dependence of dynamic and tribological behaviour of SBR is also investigated.

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