A Novel Hydrophilic PVA Fiber Reinforced Thermoplastic Polyurethane Materials for Water-lubricated Stern Bearing

Enhancement of Underwater Tribological Behavior of Hybrid Fabric Composites Using Ultrahigh Molecular Weight Polyethylene and Different Fillers

“…The results showed a worse underwater tribological performance than dry sliding. Some other studies have reached the same conclusion. − Liu − used UHMWPE and carbon nanotubes that were treated by cross-linking to improve the underwater tribological performance of a glass fabric/phenolic laminate composite. The result showed an improved under water tribological performance.…”

“…In Figure 4(c), the COF of Composite A fluctuates violently under water lubrication, 30 while the COF of Composite B and C is still stable under water-lubrication, because the UHMWPE matrix has a better water resistance than phenolic resin matrix. In Figure 4(d), the COF of Composite A fluctuates again under water-lubrication after soaking, 31,32 while the COF of Composites B and C is still stable because the UHMWPE matrix improves the water resistance and leads to stable COF of Composite B and C under water lubrication. However, for Composite A, the phenolic resin matrix absorbs water, reducing its strength under the effect of water, and as a result, the performance of phenolic resin decreases under waterlubrication.…”

Review of the evolution and prevention of friction, wear, and noise for water-lubricated bearings used in ships

“…The basic tribological properties test devices for specimen could perform different types of friction tests on specimens such as rotations, reciprocating, block on ring drive, micro-movement, scratching, and high-speed long stroke. It is necessary for WLBs to consider the corrosion of water on metals and the simulation of the sediment environment, so the basic tribological test devices of test block are generally customized, such as the ring-block test device [78], ring-plate test device [79], etc. These devices could simulate different operating conditions by changing the frictional wear method and time, motor speed, test environment, and preload force on the specimen.…”

“…Fiber materials used commonly are carbon fiber (CF), carbon nanofiber (CNF) or carbon nanotube (CNT), and glass fiber (GF). The wearresistant modifications by fibers [79,80,165,175,176,[214][215][216][217] and solid particles [164,168,171,172,218] are shown in Fig. 13, and some blending modifications [164,165,168,171,172,175,176] can simultaneously achieve the purpose of improving the friction reduction and wear resistance of the material.…”

Enhancement of the Water-Lubricated Tribological Properties of Hybrid PTFE/Nomex Fabric Laminate Composite via Epoxy Resin and Graphite Filler

“…In order to improve tribological properties underwater, some methods are proposed in the literature. Hu et al [ 30 ] studied hydrophilic PVA fiber-reinforced thermoplastic polyurethane materials for water-lubricated stern bearing. The results revealed that the addition of hydrophilic PVA fibers could improve the tribological properties of thermoplastic polyurethane (TPU) because hydrophilic PVA fibers improved the affinity and surface storage ability relative to water.…”