Tribological and mechanical behaviours of resin‐based friction materials based on microcrack filling

Li, Lekai; Gao, Guixiong; Jin, Tao; Zhuang, Jian; Song, Wei; Ma, Yan; Liu, Guoqin; Cao, Feipeng; Yuan, Shengwang; Zhang, Zuo‐Feng

doi:10.1049/bsb2.12055

Cited by 3 publications

(2 citation statements)

References 53 publications

(58 reference statements)

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“…Wear surface morphology such as spalling pits, wear debris, cracks, furrows and scratches are used to determine the wear mechanism of the friction material and to explain the wear behavior 27 . Figure 8A–E show typical SEM images of FCG0, FCG3, FCG6, FCG9 and FCG12, respectively.…”

Section: Resultsmentioning

confidence: 99%

Evaluation of tribological properties of silane‐treated rapeseed straw fiber reinforced friction polymer composites prepared by wet granulation

Zhang,

Qi,

et al. 2023

Polymer Composites

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Reinforcing fibers play a key role in improving the tribological properties of friction polymer composites. Cellulose reinforcing fibers were extracted from rapeseed straw waste and prepared as friction composites based on wet granulation, and the effects of heat and rapeseed straw fiber (RSF) additions on the tribological properties were systematically investigated. The addition of RSF induced an important transformation of the major wear mechanism to abrasive wear, especially at 9 wt%, where the abundant tribo‐films contributed to the stability of the friction coefficients (fade rate 6.8%, recovery rate 106.6%), resulting in a 37.5% increase in wear resistance compared to no addition. Furthermore, XRD, FTIR and SEM analyses showed that the silane‐ethanol solution modification contributed to the good performance of RSF.Highlights Rapeseed straw fiber (RSF) and granulation technology for polymer composites. Addition of RSF transforms adhesive and fatigue wear into abrasive wear. Friction models are developed to clarify the wear mechanism transformation. A 37.5% increase in wear resistance was achieved when RSF was added at 9 wt%.

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Section: Resultsmentioning

confidence: 99%

Evaluation of tribological properties of silane‐treated rapeseed straw fiber reinforced friction polymer composites prepared by wet granulation

Zhang,

Qi,

et al. 2023

Polymer Composites

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“…Consequently, non-asbestos organic friction compounds, particularly those without asbestos, have been progressively created. As one of the promising alternative organic fillers, polyether ether ketone (PEEK) has been employed as reinforcing fibers [22]. As a well-known high-performance polymer, PEEK displays exceptional wear resistance, extreme temperature stability, and a good rigidity-to-mass ratio.…”

Section: Introductionmentioning

confidence: 99%

Tunable Thermal, Mechanical, and Tribological Properties of Polybenzoxazine-Based Composite for Vehicle Applications

Guo

Chen

et al. 2023

Coatings

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In this study, a series of composites comprising polyether ether ketone (PEEK) and carbon fiber (CF)-reinforced polybenzoxazine for high-temperature friction materials for vehicle brake applications were developed using a high-temperature compression molding technique. The objective of this research was to systematically investigate the thermal, mechanical (tensile and flexural), and tribological performance of friction materials made from polybenzoxazine-based composites by varying the PEEK/CF mass ratio. Our study reveals the substantial improvement effect of the increased content of PEEK fibers on the thermal conductivity, the coefficient of friction, and the friction strength of the polybenzoxazine-based composite materials. Meanwhile, the introduction of carbon fibers was found to have a monotonic positive effect on the mechanical (tensile and flexural) properties and wear performance of the polybenzoxazine-based composites. The polybenzoxazine-based composites exhibit high mechanical strength, with a tensile strength of 50.1–78.6 MPa, Young’s modulus of 10.2–24.3 GPa, a flexural strength of 62.1–88.3 MPa, and a flexural modulus of 13.1–27.4 GPa. In addition, the polybenzoxazine-based composite with a PEEK/CF mass ratio of 75:25 exhibits a high and stable coefficient of friction (0.33) and a specific wear rate (1.79 × 10−7 cm3/Nm at room temperature). Subsequent to the wear test at ambient temperature, the worn surfaces of five polybenzoxazine-based composite samples with various PEEK/CF mass ratios were studied using electron microscopy technology (SEM). The observation of small cracks and tiny grooves on the worn surfaces indicates a combined abrasive and adhesive wear mechanism of the material. Our experimental results clearly reveal superior mechanical properties and excellent tribological characteristics. As a result, these composites show promising potential for the application of friction materials in terms of vehicle braking system applications.

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Effect of Polymer Ether Ketone Fibers on the Tribological Properties of Resin-Based Friction Materials

Liu

et al. 2023

Materials

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Resin-based friction materials (RBFM) are widely used in the fields of automobiles, agriculture machinery and engineering machinery, and they are vital for safe and stable operation. In this paper, polymer ether ketone (PEEK) fibers were added to RBFM to enhance its tribological properties. Specimens were fabricated by wet granulation and hot-pressing. The relationship between intelligent reinforcement PEEK fibers and tribological behaviors was investigated by a JF150F-II constant-speed tester according to GB/T 5763-2008, and the worn surface morphology was observed using an EVO-18 scanning electron microscope. The results showed that PEEK fibers can efficiently enhance the tribological properties of RBFM. A specimen with 6 ωt% PEEK fibers obtained the optimal tribological performance, the fade ratio was −6.2%, which was much higher than that of the specimen without the addition of PEEK fibers, the recovery ratio was 108.59% and the wear rate was the lowest, which was 1.497 × 10−7 cm3/(Nm)−1. The reason for the enhancing tribological performance was that, on the one hand, PEEK fibers have a high strength and modulus which can enhance the specimens at lower temperatures; on the other hand, molten PEEK at high temperatures can also promote the formation of secondary plateaus, which are beneficial for friction. The results in this paper can lay a foundation for future studies on intelligent RBFM.

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Tribological and mechanical behaviours of resin‐based friction materials based on microcrack filling

Cited by 3 publications

References 53 publications

Evaluation of tribological properties of silane‐treated rapeseed straw fiber reinforced friction polymer composites prepared by wet granulation

Evaluation of tribological properties of silane‐treated rapeseed straw fiber reinforced friction polymer composites prepared by wet granulation

Tunable Thermal, Mechanical, and Tribological Properties of Polybenzoxazine-Based Composite for Vehicle Applications

Effect of Polymer Ether Ketone Fibers on the Tribological Properties of Resin-Based Friction Materials

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