Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Carbon ceramic composite friction material and preparation method thereof
The invention discloses a carbon ceramic composite friction material and a preparation method thereof. The carbon ceramic composite friction material is prepared from the following raw materials in parts by weight: 5-10 parts of short carbon fibers, 15-25 parts of ceramic fibers, 15-25 parts of calcium sulfate whiskers, 10-15 parts of microporous filler, 3-5 parts of a friction increasing regulator, 3-5 parts of a friction reducing regulator, 0.2-0.5 part of superfine silicon carbide, 0.05-0.1 part of a dispersing agent, 3-6 parts of polysilazane and 3-5 parts of high-temperature-resistant phenolic resin. And 0.5-1 part of polytetrafluoroethylene powder. Polysilazane is adopted to treat short carbon fibers, so that the carbon fibers form a good ceramic high-temperature-resistant layer, and high-temperature oxidation of the carbon fibers in the carbon-ceramic composite friction material is effectively prevented; the use amount of phenolic resin is reduced, and the high-temperature stability of the carbon-ceramic composite friction material is improved. Through cooperation of the friction-increasing modifier, the friction-reducing modifier, the calcium sulfate whiskers, the microporous filler and the polytetrafluoroethylene, the friction coefficient is kept stable at high temperature during braking, and abrasion caused during high-load braking is reduced. Long-time high-temperature sintering is not needed in the production process, and energy-saving and environment-friendly preparation of the carbon-ceramic friction material is achieved.
本发明公开一种碳陶瓷复合摩擦材料及其制备方法。所述碳陶瓷复合摩擦材料采用的原料按照重量份计为：短切碳纤维5‑10份、陶瓷纤维15‑25份、硫酸钙晶须15‑25份、微孔填充物10‑15份、增摩擦调节剂3‑5份、减摩擦调节剂3‑5份、超细碳化硅0.2‑0.5份、分散剂0.05‑0.1份、聚硅氮烷3‑6份、耐高温酚醛树脂3‑5份；聚四氟乙烯粉0.5‑1份。采用聚硅氮烷处理短切碳纤维，使碳纤维形成良好的陶瓷耐高温层，有效防止碳陶瓷复合摩擦材料中碳纤维高温氧化；减少酚醛树脂的用量，提升碳陶瓷复合摩擦材料的高温稳定性。通过增摩擦调节剂、减摩擦调节剂、硫酸钙晶须、微孔填充物、聚四氟乙烯的协同，保持刹车高温时摩擦系数稳定，减少高载荷刹车时造成的磨损。生产过程无需长时间高温烧结，实现了节能环保制备碳陶摩擦材料。
Carbon ceramic composite friction material and preparation method thereof
The invention discloses a carbon ceramic composite friction material and a preparation method thereof. The carbon ceramic composite friction material is prepared from the following raw materials in parts by weight: 5-10 parts of short carbon fibers, 15-25 parts of ceramic fibers, 15-25 parts of calcium sulfate whiskers, 10-15 parts of microporous filler, 3-5 parts of a friction increasing regulator, 3-5 parts of a friction reducing regulator, 0.2-0.5 part of superfine silicon carbide, 0.05-0.1 part of a dispersing agent, 3-6 parts of polysilazane and 3-5 parts of high-temperature-resistant phenolic resin. And 0.5-1 part of polytetrafluoroethylene powder. Polysilazane is adopted to treat short carbon fibers, so that the carbon fibers form a good ceramic high-temperature-resistant layer, and high-temperature oxidation of the carbon fibers in the carbon-ceramic composite friction material is effectively prevented; the use amount of phenolic resin is reduced, and the high-temperature stability of the carbon-ceramic composite friction material is improved. Through cooperation of the friction-increasing modifier, the friction-reducing modifier, the calcium sulfate whiskers, the microporous filler and the polytetrafluoroethylene, the friction coefficient is kept stable at high temperature during braking, and abrasion caused during high-load braking is reduced. Long-time high-temperature sintering is not needed in the production process, and energy-saving and environment-friendly preparation of the carbon-ceramic friction material is achieved.
本发明公开一种碳陶瓷复合摩擦材料及其制备方法。所述碳陶瓷复合摩擦材料采用的原料按照重量份计为：短切碳纤维5‑10份、陶瓷纤维15‑25份、硫酸钙晶须15‑25份、微孔填充物10‑15份、增摩擦调节剂3‑5份、减摩擦调节剂3‑5份、超细碳化硅0.2‑0.5份、分散剂0.05‑0.1份、聚硅氮烷3‑6份、耐高温酚醛树脂3‑5份；聚四氟乙烯粉0.5‑1份。采用聚硅氮烷处理短切碳纤维，使碳纤维形成良好的陶瓷耐高温层，有效防止碳陶瓷复合摩擦材料中碳纤维高温氧化；减少酚醛树脂的用量，提升碳陶瓷复合摩擦材料的高温稳定性。通过增摩擦调节剂、减摩擦调节剂、硫酸钙晶须、微孔填充物、聚四氟乙烯的协同，保持刹车高温时摩擦系数稳定，减少高载荷刹车时造成的磨损。生产过程无需长时间高温烧结，实现了节能环保制备碳陶摩擦材料。
Carbon ceramic composite friction material and preparation method thereof
一种碳陶瓷复合摩擦材料及其制备方法
ZHENG SHIYANG (Autor:in)
13.12.2024
Patent
Elektronische Ressource
Chinesisch
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