Combined Effect of Nano-SiO₂and Nano-Al₂O₃on Improving the Tribological Properties of Kevlar Fabric/Phenolic Laminate in Water

Abstract

2015): Combined effect of nano-SiO 2 and nano-Al 2 O 3 on improving the tribological properties of Kevlar fabric/phenolic laminate in water, Tribology Transactions, Abstract The combined effect of nano-SiO 2 and nano-Al 2 O 3 as fillers on the tribological properties of Kevlar fabric/phenolic laminate (KFPL) in water was investigated. Results showed that the single addition of nano-SiO 2 at proper content decreased the friction coefficient of KFPL to an ultra-low value at the cost of the increased wear rate. And the single addition of nano-Al 2 O 3 at proper content reduced the wear rate of KFPL with fluctuating the friction coefficient curve.Excitingly, the combined addition of nano-SiO 2 and nano-Al 2 O 3 endowed KFPL with not only ultra-low friction coefficient originated from nano-SiO 2 , but also improved wear resistance benefited from nano-Al 2 O 3 . This means that the combined addition of nano-SiO 2 and nano-Al 2 O 3 can bring the positive effects of the two fillers into full play, and inhibit their negative aspects to some extent.

Synergism of hollow MoS2 nano-particles and WS2 micro-particles on improving the tribological properties of carbon fiber fabric reinforced phenolic-based composites

“…22,23 With further research study, two or more kinds of additives have been chosen to modify the tribological properties of polymer-based composites. [24][25][26][27] Li et al, 28 Kim et al 29 and Zalaznik et al 30 investigated the effect of filler size on the tribological properties of polymer-based composites. However, in practice, polymer-based composites modified by carbon fibers, micro-particles and nanoparticles are still unsatisfactory for tribological properties.…”

“…The results indicate that the transfer film contains phenolic resin and WS 2 has been formed on the counterface during sliding (Figure 5(a) and (b)), resulting in the decreases of friction coefficient of PF-1. 26 Previous studies revealed that the doping of inorganic particles enhances the wear resistance of polymer-based composites by improving the hardness of matrix. [2][3][4][21][22][23] Nevertheless, in the present study, doping of WS 2 micro-particles decreases the wear resistance of CF/PF composites, and the reason might be related to the changing of matrix mechanical properties.…”

High-Temperature Tribological Behavior of HDPE Composites Reinforced by Short Carbon Fiber under Water-Lubricated Conditions

“…the polymer materials possess high corrosion resistance compared to traditional metal materials and relatively low wear rate in water-lubricated environments; these factors make the polymer materials widely applied as a seal and bearing in water [16][17][18]. The different types of additives were also used to promote the water lubrication capacity and wear resistance of polymer materials, such as rubber, polyether-ether-ketone (PEEK), and phenolic [19][20][21]. It is reported that the addition of microcapsules can cause the decrease in the friction coefficient and wear loss of ultrahigh molecular weight polyethylene (UHMWPE).The palmityl palmitate was released and attached to the surface of the counterpart during the sliding process, preventing the direct contact between composites and counterpart [4,22].…”

Development of highly performant hybrid materials based on phthalonitrile resin for a simultaneous ballistic and nuclear shielding protection

“…Another rapidly growing area of research is the development of hybrid composites for the same purpose of an improved ballistic protection. In addition to the polymeric matrix and the fibers, the hybrid compositions contain an additional discontinuous phase, generally being nanosized inorganic particles, such as Aluminium oxide (Al 2 O 3 ), 15,16 Silicon carbide (SiC), 17 Silicon dioxide (SiO 2 ), 18 Carbon Nano Tube (CNT) 19 and so on. The aim of these reinforcements is to ameliorate the toughness of the polymeric matrix while providing, in certain cases, better efficiency in stopping high velocity projectiles due to their high hardness.…”