Functionalization of alumina particles to improve the performance of eco-friendly brake-pads

Abstract

Abrasives, such as oxides of alumina (Al), silica (Si), zirconia (Zr), chromium (Cr) etc., are added to raise the friction level and also to remove the glaze on the disc so that surface will be rejuvenated continuously during braking and will contribute to maintain the desired friction level. However, these inorganic particles have less adhesion with the resin/binder and hence are easily dug out during wearing process contributing to higher wear. If efforts are made to enhance the filler-matrix adhesion, not only the wear of friction material (FM) should reduce, the particles may stay for a longer time on the tribo-surface of the pads to contribute fully towards controlling the coefficient of friction (μ). In the present study, alumina particles were selected for siloxane treatment to improve the filler-matrix adhesion. Two types of eco-friendly (free from asbestos and Cu) brake-pads were developed using alumina as a theme ingredient (treated and untreated) keeping all the parent formulation identical. An additional type of brake-pads without alumina particles was also developed to observe the effect of abrasive particles on the tribo-performance. The performance properties (physical, mechanical, and tribological) of brake-pads were compared when evaluated in identical conditions. The tribo-testing was done on full-scale brake inertia dynamometer following the procedure in Japanese automobile standard (JASO C 406). It was observed that siloxane treatment affected both friction and wear of brake-pads in a beneficial way. Wear resistance got increased 35% for siloxane treated pads. Worn surfaces were analysed using scanning electron microscopy (SEM) and energy dispersive X-ray (EDAX) technique.

References

  1. [1]

    Bijwe J. Composites as friction materials: Recent developments in non-asbestos fiber reinforced friction materials-A review. Polym Compos 18(3): 378–396 (1997)

    Article  Google Scholar 

  2. [2]

    Chan D, Stachowiak G W. Review of automotive brake friction materials. Proc Inst Mech Eng Part D J Automob Eng 218(D9): 953–966 (2004)

    Article  Google Scholar 

  3. [3]

    Longley J W, Gardner R. Some Compositional Effects in the Static and Dynamic Properties of Commercial Vehicle Disk Brakes. ImechE C453/88 31–38 (1988).

    Google Scholar 

  4. [4]

    Jang H, Kim S J. The effects of antimony trisulfide (Sb2S3) and zirconium silicate (ZrSiO4) in the automotive brake friction material on friction characteristics. Wear 239(2): 229–236 (2000)

    Article  Google Scholar 

  5. [5]

    Handa Y, Kato T. Effects of Cu powder, BaSO4 and cashew dust on the wear and friction characteristics of automotive brake pads. Tribol Trans 39(2): 346–353 (1996)

    Article  Google Scholar 

  6. [6]

    Trezona R I, Allsopp D N, Hutchings I M. Transitions between two-body and three-body abrasive wear: influence of test conditions in the microscale abrasive wear test. Wear 225: 205–214 (1999)

    Article  Google Scholar 

  7. [7]

    Zum Gahr K H. Wear by hard particles. Tribol Int 31(10): 587–596 (1998)

    Article  Google Scholar 

  8. [8]

    Dwyer-Joyce R S, Sayles R S, Ioannides E. An investigation into the mechanisms of closed three-body abrasive wear. Wear 175(1–2): 133–142 (1994)

    Article  Google Scholar 

  9. [9]

    Gåhlin R, Jacobson S. The particle size effect in abrasion studied by controlled abrasive surfaces. Wear 224(1): 118–125 (1999)

    Article  Google Scholar 

  10. [10]

    Kelly D A, Hutchings I M. A new method for measurement of particle abrasivity. Wear 250: 76–80 (2001)

    Article  Google Scholar 

  11. [11]

    Matĕjka V, Lu Y F, Jiao L, Huang L, Martynkova G S, Tomasek V. Effects of silicon carbide particle sizes on friction-wear properties of friction composites designed for car brake lining applications. Tribol Int 43(1–2): 144–151 (2010)

    Article  Google Scholar 

  12. [12]

    Rajan B S, Balaji M A S, Saravanakumar S S. Effect of chemical treatment and fiber loading on physico-mechanical properties of Prosopis juliflora fiber reinforced hybrid friction composite. Mater Res Express 6(3): 035302 (2018)

    Article  Google Scholar 

  13. [13]

    Rajan B S, Balaji M A S, Noorani A B M A. Effect of silane surface treatment on the physico-mechanical properties of shell powder reinforced epoxy modified phenolic friction composite. Mater Res Express 6(6): 065315 (2019)

    Article  Google Scholar 

  14. [14]

    Basak R, Choudhury P L, Pandey K M. Effect of temperature variation on surface treatment of short jute fiber-reinforced epoxy composites. Mater Today Proc 5(1): 1271–1277 (2018)

    Article  Google Scholar 

  15. [15]

    Yang Y C, Jeong S B, Kim B G, Yoon P R. Examination of dispersive properties of alumina treated with silane coupling agents, by using inverse gas chromatography. Powder Technol 191(1–2): 117–121 (2009)

    Article  Google Scholar 

  16. [16]

    Lee C H, Park S H, Chung W, Kim J Y, Kim S H. Preparation and characterization of surface modified silica nanoparticles with organo-silane compounds. Colloids Surfaces A Physicochem Eng Asp 384(1–3): 318–322 (2011)

    Article  Google Scholar 

  17. [17]

    Abdelmouleh M, Boufi S, Belgacem M N, Dufresne A. Short natural-fibre reinforced polyethylene and natural rubber composites: effect of silane coupling agents and fibres loading. Compos Sci Technol 67(7–8): 1627–1639 (2007)

    Article  Google Scholar 

  18. [18]

    Kumar M, Bijwe J. NAO friction materials with various metal powders: Tribological evaluation on full-scale inertia dynamometer. Wear 269(11–12): 826–837 (2010)

    Article  Google Scholar 

  19. [19]

    Mahale V, Bijwe J, Sinha S. A step towards replacing copper in brake-pads by using stainless steel swarf. Wear 424: 133–142 (2019)

    Article  Google Scholar 

  20. [20]

    Aranganathan N, Bijwe J. Development of copper-free eco-friendly brake-friction material using novel ingredients. Wear 352: 79–91 (2016)

    Article  Google Scholar 

Download references

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Correspondence to Jayashree Bijwe.

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Vanvirsinh CHAUHAN. He received his master degree (M.E.) in mechanical engineering in 2008 from Gujarat University, Gujarat, India. He joined the State Government Engineering College as an assistant professor at Gujarat Technological University from 2011. Currently, he is pursuing Ph.D. from Indian Institute of Technology (IIT), Delhi, India. His research interests include friction materials, tribology, and noise-vibration.

Jayashree BIJWE. She did her Ph.D. from Indian Institute of Technology, Delhi (IITD), India, and is working as a professor in IITD since last 25 years. Her research areas cover tribology of polymer composites (dry bearings and materials, NAO Brake-pads and friction materials, and adhesives) and additives for oils and greases.

Ashish DARPE. He is a post-graduate in machine design from Visvesvaraya National Institute of Technology, Nagpur, India. He did his doctoral research at the Indian Institute of Technology Delhi in the area of rotor dynamics. He is currently a professor in the Department of Mechanical Engineering, IIT Delhi. His research interests include NVH, rotor dynamics, condition monitoring, and vibration and noise control.

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Chauhan, V., Bijwe, J. & Darpe, A. Functionalization of alumina particles to improve the performance of eco-friendly brake-pads. Friction (2021). https://doi.org/10.1007/s40544-020-0461-5

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Keywords

  • friction materials
  • brake-pads
  • siloxane treatment
  • friction modifiers
  • inertia brake-dynamometer