The range of thermal conductivity of friction materials is a critical issue since lower thermal conductivity leads to accumulation of frictional heat on the working surface, which results in excessive fade, while higher thermal conductivity leads to excessive heat flow towards back-plate resulting to “spongy brakes”. Therefore, thermal conductivity of the friction materials across the brake-pads should not be high while along the length of brake-pad; it should be high. To enhance the thermal conductivity, metals in the form of powder or fibres are used in the friction materials. Apart from improvement in thermal conductivity, strength and structural integrity, metals get actively involved in controlling the tribo-performance. Their role as improver of thermal conductivity and hence indirectly tribo-performance can never be known clearly. Keeping this in view, it was proposed to design a bulk of pad rather than the surface. Three types of pads with identical composition but differing in the bulk/body were designed by placing a thin fabric layer of Cu (2 mm away from surface) in one pad and two layers in other pad. The third pad did not contain any fabric. The developed pads were characterized for physical, chemical, thermal, and mechanical properties. Tribo-performance was evaluated on full-scale inertia dynamometer by following the JASO C 406 testing standard. It was concluded that Cu fabric inclusion led to improvement in thermal conductivity and heat exaction capacity, which in turn, improved the tribo-performance of pads significantly.

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导热系数在控制非石棉有机刹车片摩擦性能中的作用

摩擦材料的导热系数范围是一个关键问题，因为较低的导热系数会导致摩擦热量在工作表面上积累，从而导致过度褪色，而较高的导热系数会导致过多的热量流向背板，从而导致“海绵状”。刹车”。因此，摩擦材料沿刹车片长度方向的导热系数不应高；它应该很高。为了提高导热性，摩擦材料中使用了粉末或纤维形式的金属。除了提高导热性、强度和结构完整性外，金属还积极参与控制摩擦性能。它们作为导热性改进剂和间接摩擦性能改进剂的作用永远无法清楚地知道。考虑到这一点，建议设计大量的焊盘而不是表面。通过在一个垫中放置一层薄薄的铜织物层（距表面 2 毫米），在另一个垫中放置两层，设计了具有相同成分但体积/主体不同的三种类型的垫。第三垫不包含任何织物。开发的垫具有物理、化学、热和机械性能的特征。根据 JASO C 406 测试标准，在全尺寸惯性测功机上评估摩擦性能。得出的结论是，Cu 织物的夹杂导致导热性和热提取能力的提高，进而显着提高了垫的摩擦性能。通过在一个垫中放置一层薄薄的铜织物层（距表面 2 毫米），在另一个垫中放置两层，设计了具有相同成分但体积/主体不同的三种类型的垫。第三垫不包含任何织物。开发的垫具有物理、化学、热和机械性能的特征。根据 JASO C 406 测试标准，在全尺寸惯性测功机上评估摩擦性能。得出的结论是，Cu 织物夹杂导致导热性和热提取能力的提高，进而显着提高了垫的摩擦性能。通过在一个垫中放置一层薄薄的铜织物层（距表面 2 毫米），在另一个垫中放置两层，设计了三种成分相同但体积/主体不同的垫。第三垫不包含任何织物。开发的垫具有物理、化学、热和机械性能的特征。根据 JASO C 406 测试标准，在全尺寸惯性测功机上评估摩擦性能。得出的结论是，Cu 织物的夹杂导致导热性和热提取能力的提高，进而显着提高了垫的摩擦性能。热性能和机械性能。根据 JASO C 406 测试标准，在全尺寸惯性测功机上评估摩擦性能。得出的结论是，Cu 织物的夹杂导致导热性和热提取能力的提高，进而显着提高了垫的摩擦性能。热性能和机械性能。根据 JASO C 406 测试标准，在全尺寸惯性测功机上评估摩擦性能。得出的结论是，Cu 织物的夹杂导致导热性和热提取能力的提高，进而显着提高了垫的摩擦性能。