A new kind of resin-based wet friction material: Non-woven fabrics with isotropic fiber networks as preforms
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ISSN 2223-7690 CN 10-1237/TH
RESEARCH ARTICLE
A new kind of resin-based wet friction material: Non-woven fabrics with isotropic fiber networks as preforms Yewei FU*, Le ZHOU, Tao YIN, Zhongyao LUO, Hejin LI, Lehua QI State Key Laboratory of Solidification Processing, Shaanxi Province Key Laboratory of Fiber Reinforced Light Composite Materials, Northwestern Polytechnical University, Xi’an 710072, China Received: 21 August 2019 / Revised: 26 August 2019 / Accepted: 03 September 2019
© The author(s) 2019. Abstract: As an alternative to short fibers, non-woven fabrics (NWFs) were made using different types of long fibers to optimize the performance of paper-based friction materials and their technology. In this investigation, the fillers and resin were impregnated into these NWFs to prepare three kinds of wet friction material. The tribological, mechanical, and thermal properties of the new wet friction material were studied. The results indicate that the dynamic friction coefficient of the new friction material is approximately 0.12 and the static friction coefficient is approximately 0.15; the better wear rate is 0.81334 × 10−14 m3·(N·m)−1. In addition, the temperature for 10% mass loss yielded 100 °C enhancement and the tensile strength was improved by 200%, compared to previously reported values. Most importantly, the advantages include a simple preparation flow, low cost, and resource conservation. This is a promising approach for the future development of paper-based friction materials. Keywords: non-woven fabric; wet friction material; continued friction film; green manufacture speed
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Introduction
Friction materials are widely used in automatic transmissions and clutches in automobiles [1–3]. Fiberreinforced resin-based friction material (FRRBFM) is an important category of friction material that is usually composed of fibers, adhesives, friction modifiers, and fillers [4–6]. As a kind of reinforcement, fibers impart physical strength to friction materials and provide thermal shock resistance. Cai et al. [7] studied the effect of the aspect ratios of aramid fiber on the mechanical and tribological performances of friction material. Li et al. [8] proposed the idea of a carbon fiber reinforced resin-based friction material. Paper-based friction material is an important class of wet friction material, which is a kind of oil-immersed, polyporous FRRBFM. To improve the performance of a paper-based friction material, many researchers have undertaken theoretical studies on the composition of raw materials [1–6]. Recently, Zhou et al. [1] studied * Corresponding author: Yewei FU, E-mail: [email protected]
the effect of the synergistic effect of liquid carboxylated nitrile rubber and epoxy resin on a soft paper-based friction material. Fei et al. [2] electrodeposited silicon carbide particles on a paper-based friction material to enhance its performance. However, the current approaches for the preparation of paper-based friction materials are still based on the papermaking process. As such, the preforms have l
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