Abstract
Basalt fiber is an eco-friendly reinforcement fiber in fabricating polymer composites with high specific mechanical physicochemical, biodegradable, and wear resistant properties. This article firstly introduces the composition, morphology, functional group, and thermostability of basalt fibers. Subsequently, friction composites based on a newly designed formulation were fabricated with different content basalt fibers. According to the Chinese National Standard, the physical and mechanical properties and tribological performance of the friction composites were characterized and evaluated. Extension evaluation based on extenics theory was developed to evaluate the relationships between the coefficient of friction and content of basalt fiber. Furthermore, the possible mechanism of basalt fiber reinforced friction composites was proposed.
Highlights
Asbestos fiber has been a popular reinforcement used to fabricate brake pads over the past few decades, on account of its strength, resistance to heat and acid, chemical stability, and ease of machining [1]
Basalt fiber obtained by melting basalt shows amorphous SiO2, which was confirmed by widely-angle X-ray diffraction (WAXRD) of the samples (Figure 1a)
The physico-mechanical and tribological performance of the friction composites based on atypical non-asbestos organic (NAO) type formulation containing different contents of basalt fibers has been evaluated
Summary
Asbestos fiber has been a popular reinforcement used to fabricate brake pads over the past few decades, on account of its strength, resistance to heat and acid, chemical stability, and ease of machining [1]. In order to meet this need, many non-asbestos fibers have been developed, including mineral fiber [4,5,6,7], plant fiber [8,9,10,11], and artificial fiber such as Kevlar fiber [12], glass fiber [13,14], carbon fiber [15,16], etc. These fibers exhibit fairly good mechanical and friction properties. The others have some drawbacks more or less such as poor heat resistance, high cost, low-frequency braking noise, poor affinity with resin and other fillers, even harmful to human [7,17], these disadvantages severely limit their application in the automobile brake industry
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