Asbestos-free lining of hydraulic disc brake for motorcycle and preparation method thereof
A technology for disc brakes and motorcycles, applied in friction linings, chemical instruments and methods, mechanical equipment, etc., can solve the problems of unstable friction coefficient, poor heat resistance, etc. Small, good effect of high temperature friction performance
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preparation example 1
[0045] Preparation example 1: The raw material ratio of modified aramid fibers is shown in Table 1. 1.6 kg of aramid fibers are wound on a cylindrical glass frame, and the glass frame is ultrasonically cleaned in 10 kg of acetone solution with a mass fraction of 10%. After drying for 1 hour, soak the aramid fiber in 16 kg of phosphoric acid solution with a mass fraction of 24%, and heat it to 30°C. Brush the mixed solution of 5 kg of modified epoxy resin activation solution and 15 kg of resorcinol-formaldehyde resin solution with a mass fraction of 15% on the aramid fiber, then put the aramid fiber at 3.8KPa, and dry it at 90°C for 4h .
preparation example 2
[0046] Preparation example 2: The raw material ratio of modified aramid fibers is shown in Table 1. 2.0 kg of aramid fibers are wound on a cylindrical glass frame, and the glass frame is ultrasonically cleaned in 15 kg of acetone solution with a mass fraction of 13%. After drying for 1.5 hours, soak the aramid fiber in 18 kg of phosphoric acid solution with a mass fraction of 26%, and heat it to 35°C. Brush the mixed solution of 7 kg of modified epoxy resin activation solution and 17 kg of resorcinol-formaldehyde resin solution with a mass fraction of 18% on the aramid fiber, then put the aramid fiber at 4.0KPa, and dry it at 95°C for 4.5 h.
preparation example 3
[0047] Preparation Example 3: The ratio of raw materials for modified aramid fibers is shown in Table 1. 2.4 kg of aramid fibers are wound on a cylindrical glass frame, and the glass frame is ultrasonically cleaned in 20 kg of acetone solution with a mass fraction of 15%. Dry after 2 hours, soak the aramid fiber in 20 kg of phosphoric acid solution with a mass fraction of 28%, and heat it to 40°C, keep it warm for 1 hour, take it out, wash it repeatedly with 40 kg of distilled water until neutral, Brush the mixed solution of 9 kg of modified epoxy resin activation solution and 18 kg of resorcinol-formaldehyde resin solution with a mass fraction of 15% on the aramid fiber, then dry the aramid fiber at 4.2KPa at 100°C for 5 hours .
[0048] Raw material ratio of modified aramid fiber in table 1 preparation example 1-3
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