Zaghloul Moustafa Mahmoud Yousry, Steel Karen, Veidt Martin, Heitzmann Michael T
School of Mechanical and Mining Engineering, The University of Queensland, Brisbane 4072, Australia.
Centre for Advanced Materials Processing and Manufacturing (AMPAM), The University of Queensland, Brisbane 4072, Australia.
Polymers (Basel). 2023 Jan 30;15(3):694. doi: 10.3390/polym15030694.
High wear rates and frictional coefficients have always been the primary reasons for limiting the service life of critical elements such as pumps, couplings, bushings, bearings and gears. The premature and erratic failures are costing the industries extensive amounts of money every year. Additionally, under severe service conditions, the wear resistance requirements are higher, which greatly hinders the application of neat thermoplastics in different sectors. Hence, it is vital to enhance the tribological characteristics of thermoplastics. The mechanical and tribological properties of Polyamide 6, Thermoplastic Polyurethane, and glass fibre reinforced (GFR) Polyadmide 6 Composites of variable fibre volume fractions were investigated. Pin specimens of Polyamide 6 reinforced with (25%, 33%, and 50%) by volume of fibres were fabricated by an injection moulding process. The specimens were tested for tensile, compression, hardness, and wear under dry abrasive conditions using a pin-on-disc setup. Furthermore, the samples were scanned using micro-computed tomography (micro-CT), and the worn-out samples were analysed using field emission scanning electron microscopy. The experimental results showed that the fibre volume fraction was inversely proportional to the wear resistance of the prepared composite materials. This research will enable the industry partners to supply cutting-edge technologies to the global oil and gas industry that not only minimizes the well running cost but also improves the well resilience.
高磨损率和摩擦系数一直是限制泵、联轴器、衬套、轴承和齿轮等关键部件使用寿命的主要原因。过早和不稳定的故障每年给行业造成大量资金损失。此外，在恶劣的使用条件下，对耐磨性的要求更高，这极大地阻碍了纯热塑性塑料在不同领域的应用。因此，提高热塑性塑料的摩擦学特性至关重要。研究了不同纤维体积分数的聚酰胺6、热塑性聚氨酯和玻璃纤维增强（GFR）聚酰胺6复合材料的力学和摩擦学性能。通过注塑工艺制备了纤维体积分数为（25%、33%和50%）的聚酰胺6增强销试样。使用销盘装置在干磨条件下对试样进行拉伸、压缩、硬度和磨损测试。此外，使用微型计算机断层扫描（micro-CT）对样品进行扫描，并使用场发射扫描电子显微镜对磨损样品进行分析。实验结果表明，纤维体积分数与制备的复合材料的耐磨性成反比。这项研究将使行业合作伙伴能够向全球石油和天然气行业提供前沿技术，不仅可以将油井运行成本降至最低，还能提高油井的恢复力。
