OBRABOTKAMETALLOV Vol. 27 No. 2 2025 technology a b Fig. 3. Aramid Fiber (a); Basalt Fiber (b) Sheets Ta b l e 1 Mechanical Properties of Aramid and Basalt [22] Properties Aramid Basalt Tensile strength (GPa) 2.9–3.4 3.0–4.84 Elastic modulus (GPa) 70–112 79.3–93.1 Density (g/cm³) 1.43 2.90 Methods Based on the analysis of literature data, and considering the role and properties of components, two compositions of brake friction composites were proposed for experimental wear tests. The tribological tests of materials for friction and wear were implemented using the pin-on-disk kinematic scheme. The selected compositions were developed taking into account the unique properties of each component, which allows creating a strong, durable, heat-resistant, and cost-effective friction material. Each component plays an important role in ensuring the necessary characteristics of the braking system. Material Preparation 1. BFC1: basalt fiber, calcium carbonate filler, polymer binder, graphite friction modifier, and balancing ingredients. The proposed composition is based on previous research and includes: – Basalt: 30 wt. %; – Calcium carbonate: 30 wt. %; – Phenolic resin: 20 wt. %; – Graphite: 10 wt. %; – Other fillers – alumina: 5 wt. %, copper: 5 wt. %. 2. BFC2: aramid fiber, barium sulfate filler, polymer binder, graphite friction modifier, and balancing ingredients. The proposed composition based on previous research and includes: – Aramid: 30 wt. %; – Barium sulfate: 30 wt. %; – Phenolic resin: 20 wt. %; – Graphite: 10 wt. %; – Other fillers – aluminum oxide: 5 wt. %, copper: 5 wt. %.
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