玻璃纤维增强 PA66 齿轮材料的摩擦学特性研究

IF 2.9 3区 工程技术 Q2 ENGINEERING, CHEMICAL
Xinmin Li, Zhengjie Qiu, Wing San Tony Hung, Ulf Olofsson, Löwer Manuel, Chaoqun Duan
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引用次数: 0

摘要

聚酰胺 66(PA66)是常用的聚合物齿轮材料之一。本文使用针盘摩擦磨损试验机重点研究了玻璃纤维增强 PA66 复合材料在自啮合接触中的摩擦学特性。同时还研究了玻璃纤维含量、PV(接触压力与滑动速度的乘积)和润滑对试样摩擦学特性的影响。结果表明,在干滑动条件下,玻璃纤维增强 PA66 比 PA66 表现出更高的摩擦系数和特定磨损率。这可能是由于在滑动过程中剥离的玻璃纤维充当了研磨颗粒,对表面产生了侵蚀作用。在油脂润滑条件下,PA66 + 33% GF 的摩擦系数和比磨损率最低,这是因为其强度较高。在干滑动条件下,随着 PV 值的变化,所有试样在 30 MPa-m/s 时的摩擦系数和比磨损率都最高。在油脂润滑条件下,随着 PV 值的变化,所有试样在 4 MPa-m/s 时的摩擦系数和特定磨损率都最大。在大多数实验条件下,添加润滑脂可改善 PA66 复合材料的摩擦和磨损。然而,在低 PV 值条件下,PA66 和 PA66 + 13% GF 在润滑脂润滑下的特定磨损率高于干滑动条件下的磨损率。这可能是由于润滑脂会降低 PA66 和 PA66 + 13% GF 的表面机械强度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Study on Tribological Properties of Gear Material PA66 Reinforced by Glass Fibers

Study on Tribological Properties of Gear Material PA66 Reinforced by Glass Fibers

Polyamide 66 (PA66) is one of the commonly used polymer gear materials. This paper focuses on the tribological properties of glass fiber reinforced PA66 composites in self-mated contact using a pin-on-disc tribometer. The effects of glass fiber content, PV (the product of the contact pressure and sliding speed), and lubrication on the tribological properties of the specimens are also investigated. The results show that the glass fiber reinforced PA66 exhibit higher coefficients of friction and specific wear rates than PA66 under dry sliding conditions. This is probably due to the peeled glass fibers during the sliding process acting as abrasive particles which have an aggressive effect on the surface. Under grease lubricated conditions, PA66 + 33% GF has the lowest coefficient of friction and specific wear rate due to its higher strength. Under dry sliding conditions, all specimens show the highest friction coefficient and specific wear rate at 30 MPa·m/s with the change of PV value. Under grease lubricated conditions, all specimens show the highest friction coefficient and specific wear rate at 4 MPa·m/s with the change of PV value. The addition of grease improves friction and wear of PA66 composites under most of the experimental conditions. However, the specific wear rates of PA66 and PA66 + 13% GF under grease lubrication are higher than those under dry sliding conditions at low PV values. This may be due to the fact that greases can reduce the surface mechanical strength of PA66 and PA66 + 13% GF.

Graphical abstract

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来源期刊
Tribology Letters
Tribology Letters 工程技术-工程:化工
CiteScore
5.30
自引率
9.40%
发文量
116
审稿时长
2.5 months
期刊介绍: Tribology Letters is devoted to the development of the science of tribology and its applications, particularly focusing on publishing high-quality papers at the forefront of tribological science and that address the fundamentals of friction, lubrication, wear, or adhesion. The journal facilitates communication and exchange of seminal ideas among thousands of practitioners who are engaged worldwide in the pursuit of tribology-based science and technology.
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