This acicular wollastonite powder uses high-purity wollastonite ore, processed through special crushing and grading processes, maintaining a high acicular aspect ratio. It forms a uniform support structure in the friction material matrix, solving the pain point of ordinary fillers causing large friction coefficient fluctuation and high wear rate. Its excellent thermal stability maintains structural stability in high-temperature friction environments, improving the service life and safety of brake products, while reducing the formula cost of friction materials. It complies with the ISO/TS16949 quality standard for the automotive industry and adapts to resin-based friction material systems.
Detailed parameters include SiO2 content of 52.0±0.3%, CaO content of 45.8±0.3%, acicular aspect ratio of 15:1, average particle size of 600 mesh (about 20μm), moisture content ≤0.1%, pH value of 9.0-10.0, ignition loss ≤0.15%, Mohs hardness of 4.5-5.0, friction stability coefficient ≥0.35, packaged in sealed iron drums with a single drum net weight of 25kg, and custom particle size and packaging forms are available according to customer needs.
It is mainly applied to automotive brake pads, clutch linings, engineering machinery brake linings, railway locomotive brake blocks and other friction material scenarios. It can be used as a functional filler and reinforcing agent for friction materials, improving the wear resistance and friction stability of friction materials, reducing the temperature sensitivity of friction coefficients, improving the service life and safety of brake products. It adapts to phenolic resin, epoxy resin and other resin-based friction material systems, helping friction material manufacturers improve product performance and market competitiveness.
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