CN107892789A - 一种耐高温汽车刹车片 - Google Patents
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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Abstract
本发明公开了一种耐高温汽车刹车片，包括钢背和贴在钢背上的摩擦材料，摩擦材料的原料包括:酚醛改性树脂、端羟基液体聚丁二烯橡胶、丙烯酸酯橡胶、丁腈橡胶粉、复合改性石墨、矿物纤维、片状钛酸钾、碳纤维、钢纤维、碳化硅纤维、钼纤维、人造石墨粉、硅酸锆、氧化铝、硫酸钡、硫化锡、八苯基倍半硅氧烷、六方氮化硼；复合改性石墨按照以下工艺进行制备:将酚醛改性树脂、硅烷偶联剂KH‑550、天然鳞片石墨、纳米二氧化硅、纳米二氧化钛、纳米氧化铝、正硅酸乙酯和苯基三乙氧基硅烷加入乙醇中混合均匀，在常温下搅拌1‑2h，升温至55‑70℃，搅拌20‑40min后蒸发、烘干，干燥粉碎，经350‑400目筛过滤后得到。
Description
技术领域
本发明属于汽车技术领域，具体涉及一种耐高温汽车刹车片。
背景技术
刹车片一般由钢板、粘接隔热层和摩擦块构成，钢板要经过涂装来防锈，涂装过程用SMT-4炉温跟踪仪来检测涂装过程的温度分布来保证质量。
刹车的工作原理主要是来自摩擦，利用刹车片与刹车碟(鼓)及轮胎与地面的摩擦，将车辆行进的动能转换成摩擦後的热能，将车子停下来。一套良好有效率的刹车系统必须能提供稳定、足够、可控制的刹车力，并且具有良好的液压传递及散热能力，以确保驾驶人从刹车踏板所施的力能充分有效的传到总泵及各分泵，及避免高热所导致的液压失效及刹车衰退。车子上的刹车系统分为碟式和鼓式两大类，但是除了成本上的优势外，鼓式刹车的效率远比不上碟式刹车，因此所讨论的刹车系统将仅以碟式刹车为主。
发明内容
发明目的：本发明提供一种耐高温的汽车刹车片。
技术方案：一种耐高温汽车刹车片，包括钢背和贴在钢背上的摩擦材料，所述摩擦材料的原料按重量份包括:酚醛改性树脂25-35份、端羟基液体聚丁二烯橡胶15-30份、丙烯酸酯橡胶5-15份、丁腈橡胶粉5-10份、复合改性石墨1-8份、矿物纤维5-15份、片状钛酸钾5-15份、碳纤维5-10份、钢纤维10-25份、碳化硅纤维5-10份、钼纤维2-5份、人造石墨粉3-8份、硅酸锆3-5份、氧化铝1-2份、硫酸钡3-8份、硫化锡2-5份、八苯基倍半硅氧烷1-3份、六方氮化硼3-8份；
上述复合改性石墨的制备是按重量份将5-15份酚醛改性树脂、2-8份硅烷偶联剂KH-550、50-65份天然鳞片石墨、5-10份纳米二氧化硅、3-10份纳米二氧化钛、1-5份纳米氧化铝、3-8份正硅酸乙酯和1-5份苯基三乙氧基硅烷加入100份乙醇中混合均匀，在常温下搅拌1-2h，升温至55-70℃，搅拌20-40min后蒸发、烘干，然后粉碎，经350-400目筛过滤后得到上述复合改性石墨。
具体地，所述钢背上的摩擦基材的原料中，酚醛改性树脂、端羟基液体聚丁二烯橡胶、丙烯酸酯橡胶、丁腈橡胶粉的重量比为25-35:15-30:5-15:5-10。
具体地，所述摩擦基材的原料中，矿物纤维、片状钛酸钾、碳纤维、钢纤维、碳化硅纤维、钼纤维的重量比为5-15:5-15:5-10:10-25:5-10:2-5。
具体地，所述摩擦基材的原料按重量份包括：酚醛改性树脂25份、端羟基液体聚丁二烯橡胶15份、丙烯酸酯橡胶10份、丁腈橡胶粉5份、复合改性石墨8份、矿物纤维8份、片状钛酸钾15份、碳纤维5份、钢纤维18份、碳化硅纤维4份、钼纤维5份、人造石墨粉5份、硅酸锆6份、氧化铝1.5份、硫酸钡8份、硫化锡5份、八苯基倍半硅氧烷4.2份、六方氮化硼7份。
具体地，所述酚醛树脂为腰果壳油三聚氰胺改性酚醛树脂、橡胶改性酚醛树脂、硅改性酚醛树脂中的一种或者多种与钼酚醛树脂、钡酚醛树脂的混合物。
具体地，所述碳纤维为浓硫酸氧化碳纤维。
具体地，所述人造石墨粉为石墨化程度为98％的100目人造石墨粉。
具体地，所述按重量份将6.3份酚醛树脂、5份硅烷偶联剂KH-550、60份氧化天然石墨、12份纳米二氧化硅、7.3份纳米二氧化钛、5.2份纳米氧化铝、6份正硅酸乙酯和3.5份苯基三乙氧基硅烷加入100份乙醇中混合均匀，在常温下搅拌2h，升温70℃，搅拌33min后蒸发、烘干，然后粉碎，经350目筛过滤后得到所述复合改性石墨。
具体地，所述纳米二氧化硅的平均粒径为20-35nm；所述纳米二氧化钛的平均粒径为35-50nm；所述纳米氧化铝的平均粒径为30-60nm。
有益效果：与现有技术相比，本发明的优点在于：采用的材料无昂贵的材料，且制备过程简单不复杂，制备出的刹车片耐高温效果好。
具体实施方式
下面结合具体实施方式，进一步阐明本发明。
一种耐高温汽车刹车片，包括钢背和贴在钢背上的摩擦材料，摩擦材料的原料按重量份包括:酚醛改性树脂25-35份、端羟基液体聚丁二烯橡胶15-30份、丙烯酸酯橡胶5-15份、丁腈橡胶粉5-10份、复合改性石墨1-8份、矿物纤维5-15份、片状钛酸钾5-15份、碳纤维5-10份、钢纤维10-25份、碳化硅纤维5-10份、钼纤维2-5份、人造石墨粉3-8份、硅酸锆3-5份、氧化铝1-2份、硫酸钡3-8份、硫化锡2-5份、八苯基倍半硅氧烷1-3份、六方氮化硼3-8份；
上述复合改性石墨的制备是按重量份将5-15份酚醛改性树脂、2-8份硅烷偶联剂KH-550、50-65份天然鳞片石墨、5-10份纳米二氧化硅、3-10份纳米二氧化钛、1-5份纳米氧化铝、3-8份正硅酸乙酯和1-5份苯基三乙氧基硅烷加入100份乙醇中混合均匀，在常温下搅拌1-2h，升温至55-70℃，搅拌20-40min后蒸发、烘干，然后粉碎，经350-400目筛过滤后得到上述复合改性石墨。具体地，所述钢背上的摩擦基材的原料中，酚醛改性树脂、端羟基液体聚丁二烯橡胶、丙烯酸酯橡胶、丁腈橡胶粉的重量比为25-35:15-30:5-15:5-10。
所述复合改性石墨优选的重量份为：将6.3份酚醛树脂、5份硅烷偶联剂KH-550、60份氧化天然石墨、12份纳米二氧化硅、7.3份纳米二氧化钛、5.2份纳米氧化铝、6份正硅酸乙酯和3.5份苯基三乙氧基硅烷加入100份乙醇中混合均匀，在常温下搅拌2h，升温70℃，搅拌33min后蒸发、烘干，然后粉碎，经350目筛过滤后得到所述复合改性石墨。
所述摩擦基材的原料中，矿物纤维、片状钛酸钾、碳纤维、钢纤维、碳化硅纤维、钼纤维的重量比为5-15:5-15:5-10:10-25:5-10:2-5。
另一种配方为摩擦基材的原料按重量份包括：酚醛改性树脂25份、端羟基液体聚丁二烯橡胶15份、丙烯酸酯橡胶10份、丁腈橡胶粉5份、复合改性石墨8份、矿物纤维8份、片状钛酸钾15份、碳纤维5份、钢纤维18份、碳化硅纤维4份、钼纤维5份、人造石墨粉5份、硅酸锆6份、氧化铝1.5份、硫酸钡8份、硫化锡5份、八苯基倍半硅氧烷4.2份、六方氮化硼7份。
所述酚醛树脂为腰果壳油三聚氰胺改性酚醛树脂、橡胶改性酚醛树脂、硅改性酚醛树脂中的一种或者多种与钼酚醛树脂、钡酚醛树脂的混合物。
所述碳纤维为浓硫酸氧化碳纤维。
所述人造石墨粉为石墨化程度为98％的100目人造石墨粉。
所述纳米二氧化硅的平均粒径为20-35nm；所述纳米二氧化钛的平均粒径为35-50nm；所述纳米氧化铝的平均粒径为30-60nm。
Claims (9)
1.一种耐高温汽车刹车片，其特征在于：包括钢背和贴在钢背上的摩擦材料，所述摩擦材料的原料按重量份包括:酚醛改性树脂25-35份、端羟基液体聚丁二烯橡胶15-30份、丙烯酸酯橡胶5-15份、丁腈橡胶粉5-10份、复合改性石墨1-8份、矿物纤维5-15份、片状钛酸钾5-15 份、碳纤维5-10份、钢纤维10-25份、碳化硅纤维5-10份、钼纤维2-5份、人造石墨粉3-8份、硅酸锆3-5份、氧化铝1-2份、硫酸钡3-8份、硫化锡2-5份、八苯基倍半硅氧烷1-3份、六方氮化硼3-8份；
上述复合改性石墨的制备是按重量份将5-15份酚醛改性树脂、2-8份硅烷偶联剂KH-550、50-65份天然鳞片石墨、5-10份纳米二氧化硅、3-10份纳米二氧化钛、1- 5份纳米氧化铝、3-8份正硅酸乙酯和1-5份苯基三乙氧基硅烷加入100份乙醇中混合均匀，在常温下搅拌1-2h，升温至55-70°C，搅拌20-40min后蒸发、烘干，然后粉碎，经350-400 目筛过滤后得到上述复合改性石墨。
2.根据权利要求1所述的一种耐高温汽车刹车片，其特征在于：所述钢背上的摩擦基材的原料中，酚醛改性树脂、端羟基液体聚丁二烯橡胶、丙烯酸酯橡胶、丁腈橡胶粉的重量比为25-35:15-30:5- 15:5-10。
3.根据权利要求1所述的一种耐高温汽车刹车片，其特征在于：所述摩擦基材的原料中，矿物纤维、片状钛酸钾、碳纤维、钢纤维、碳化硅纤维、钼纤维的重量比为5-15:5-15: 5-10:10-25:5-10:2-5。
4.根据权利要求1所述的一种耐高温汽车刹车片，其特征在于：所述摩擦基材的原料按重量份包括：酚醛改性树脂25份、端羟基液体聚丁二烯橡胶15份、丙烯酸酯橡胶10份、丁腈橡胶粉5份、复合改性石墨8份、矿物纤维8份、片状钛酸钾15份、碳纤维5份、钢纤维18份、碳化硅纤维4份、钼纤维5份、人造石墨粉 5 份、硅酸锆6份、氧化铝1.5份、硫酸钡8份、硫化锡5份、八苯基倍半硅氧烷4.2份、六方氮化硼7份。
5.根据权利要求1所述的一种耐高温汽车刹车片，其特征在于：所述酚醛树脂为腰果壳油三聚氰胺改性酚醛树脂、橡胶改性酚醛树脂、硅改性酚醛树脂中的一种或者多种与钼酚醛树脂、钡酚醛树脂的混合物。
6.根据权利要求1所述的一种耐高温汽车刹车片，其特征在于：所述碳纤维为浓硫酸氧化碳纤维。
7.根据权利要求1所述的一种耐高温汽车刹车片，其特征在于：所述人造石墨粉为石墨化程度为98%的100目人造石墨粉。
8.根据权利要求1所述的一种耐高温汽车刹车片，其特征在于：所述按重量份将6.3份酚醛树脂、5份硅烷偶联剂KH-550、60份氧化天然石墨、12份纳米二氧化硅、7. 3份纳米二氧化钛、5.2份纳米氧化铝、6份正硅酸乙酯和3.5份苯基三乙氧基硅烷加入100份乙醇中混合均匀，在常温下搅拌2 h，升温7 0 °C ，搅拌 33min后蒸发、烘干，然后粉碎，经350目筛过滤后得到所述复合改性石墨。
9.根据权利要求1所述的一种耐高温汽车刹车片，其特征在于：所述纳米二氧化硅的平均粒径为20-35nm；所述纳米二氧化钛的平均粒径为35-50nm；所述纳米氧化铝的平均粒径为30-60nm。
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