Optimization of Tribological Properties of Nonasbestos Brake Pad Material by Using Steel Wool

Table 2

List of the ingredients in composites by weight percentage.

S. no.	Ingredients	Na01	Na02	Na03	Na04	Na05
1	Steel wool *	0	4	8	12	16
2	Copper fiber	5	5	5	5	5
3	Antimony trioxide	1.5	1.5	1.5	1.5	1.5
4	Alkyl benzene phenolic resin	11	11	11	11	11
5	NBR rubber	3	3	3	3	3
6	Synthetic graphite	10	10	10	10	10
7	Molybdenum disulphide	2	2	2	2	2
8	Zirconium silicate	2	2	2	2	2
9	Friction dust	12	12	12	12	12
10	Synthetic barites *	32	28	24	20	16
11	Vermiculite	7	7	7	7	7
12	Calcium carbonate	14.5	14.5	14.5	14.5	14.5
	Total	100	100	100	100	100

∗bold font refers to varying composition (i.e. 2 varying ingredients in the base composition).