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Effect Of Cashew Nut Shell Liquid (Cnsl) On Tribological Behavıor Of Brake Pad Composite

Harun YANAR, Gencaga PURCEK, H. Huseyin AYAR, Effect Of  Cashew Nut Shell Liquid (Cnsl) On Tribological Behavıor Of Brake Pad Composite, SERBIATRIB ‘19, 16th International Conference on Tribology, Kragujevac, Serbia, 15 – 17 May 2019 

Abstract: Effect of CNSL addition as a friction modifier on the wear characteristics and mechanical properties of non-asbestos composites brake pad was investigated. For this purpose, the content of CNSL in the matrix structure was only changed in the range of 0 - 5 wt.% and six different compositions were prepared. Only the amount of resin were changed, other ingredients in the mixture were keept constant.  The brake-pad samples were tested for their friction and wear behavior on a pin-on-disk type test configuration according to the NF F 11-292 French standard. It was observed that coefficient of friction of composite decreased with increasing CNSL contents up to 2wt % level, above which  coefficient of friction  increased.  Specific wear rate however, linearly decreased  with increasing the amount of CNSL content in the matrix. On the other hand, CNSL addition to the composite matrix decreased the some mechanical properties such as hadness, compressive strength and elastic module of sample, while increased the compressibility values. 
 
Keywords: Composite brake pad/shoes, Friction material, CNSL ingredient 

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