PDF(Pubmed)
Abstract：
Braking systems are extremely important in any vehicle. They convert the kinetic energy of motion into thermal energy that is dissipated into the atmosphere. Different vehicle groups have different nominal and maximum speeds and masses, so the amount of thermal energy that needs to be absorbed by the friction pads and then dissipated can vary significantly. Conventional friction materials are composite materials capable of withstanding high temperatures (in the order of 500-600 °C) and high mechanical loads resulting from braking intensity and vehicle weight. In small vehicles traveling at low speeds, where both the amount of thermal energy and its density are limited, the use of slightly weaker friction materials with better ecological properties can be considered. This work proposes a prototype composite friction material using flax fibers as reinforcement instead of the commonly used aramid. A number of samples were prepared and subjected to laboratory tests. The samples were prepared using components of plant origin, specifically flax fibers. This component acted as reinforcement in the composite friction material, replacing aramid commonly used for this purpose. The main tribological characteristics were determined, such as the values of the coefficients of friction and the coefficients of abrasive wear rate. For this purpose, an authorial method using ball-cratering contact was used. The results were analyzed using statistical methods. It was found that the composite material using flax fibers does not differ significantly in its tribological properties from conventional solutions; so, it can be assumed that it can be used in the vehicle\'s braking system.
摘要：
制动系统在任何车辆中都非常重要。它们将运动的动能转化为散发到大气中的热能。不同的车辆组有不同的标称和最大速度和质量，因此，需要被摩擦垫吸收然后消散的热能的量可以显著变化。传统的摩擦材料是能够承受高温(约500-600°C)和由制动强度和车辆重量引起的高机械载荷的复合材料。在低速行驶的小型车辆中，热能的数量和密度都是有限的，可以考虑使用具有更好生态特性的稍弱的摩擦材料。这项工作提出了一种原型复合摩擦材料使用亚麻纤维作为增强代替常用的芳纶。制备多个样品并进行实验室测试。样品是使用植物来源的成分制备的，特别是亚麻纤维。该成分在复合摩擦材料中起到增强作用，取代通常用于此目的的芳纶。确定了主要摩擦学特征，例如摩擦系数和磨料磨损率系数的值。为此,使用了一种使用球形接触的作者方法。结果采用统计学方法进行分析。发现使用亚麻纤维的复合材料在摩擦学性能上与常规溶液没有显着差异；因此，可以假设它可以用于车辆的制动系统。
