The tribological behaviors of the polyurethane coating filled with nano-SiO2 under different lubrication conditions

2008 ◽  
Vol 39 (2) ◽  
pp. 188-194 ◽  
Author(s):  
Hao-Jie Song ◽  
Zhao-Zhu Zhang ◽  
Xue-Hu Men
Keyword(s):  
Polyurethane Coating ◽  
Nano Sio2 ◽  
Tribological Behaviors ◽  
Lubrication Conditions

scholarly journals Influence of nano-SiO2 on the bonding strength and wear resistance properties of polyurethane coating

2019 ◽  
Vol 26 (1) ◽  
pp. 77-83 ◽  
Author(s):  
Fangfang Wang ◽  
Lajun Feng ◽  
Huini Ma ◽  
Zhe Zhai ◽  
Zheng Liu
Keyword(s):  
Wear Resistance ◽  
Friction Coefficient ◽  
Wear Rate ◽  
Composite Coating ◽  
Network Structure ◽  
Bonding Strength ◽  
Coating Layer ◽  
Steel Substrate ◽  
Polyurethane Coating ◽  
Nano Sio2

Abstract To improve the wear resistance of polyurethane (PU) coating and its adhesion to the steel substrate, a series of simple and practicable techniques were designed to mix nano-SiO2 with PU powder to cast a coating layer onto the steel. When the addition of nano-SiO2 was small, a network structure of PU-SiO2 was produced. It improved the wear resistance of the composite coating and its adhesion to the steel substrate. When the addition of nano-SiO2 was excessive, agglomerated nano-SiO2 particles not only affected the bond between the PU resin and the steel substrate but also became abrasive materials, intensifying the abrasion of the composite coating during friction. It resulted in lower bonding strength and poorer wear resistance of the composite coating. The wear rate and friction coefficient of 2 wt.% SiO2/PU composite coating were 1.52×10−6 cm3/min N and 0.31, respectively. Its wear resistance was about 10 times as high as that of the pure PU coating. Furthermore, a simple and practicable installation was designed to test the bonding strength between the coating and the steel substrate. The bonding strength between 2 wt.% SiO2/PU composite coating and the steel substrate was 7.33 MPa, which was 39% higher than that of the pure PU coating.

Tribological properties of Tin-based Babbitt bearing alloy with polyurethane coating under dry and starved lubrication conditions

2015 ◽  
Vol 90 ◽  
pp. 22-31 ◽  
Author(s):  
Dongya Zhang ◽  
John K.L. Ho ◽  
Guangneng Dong ◽  
Hui Zhang ◽  
Meng Hua
Keyword(s):  
Tribological Properties ◽  
Polyurethane Coating ◽  
Starved Lubrication ◽  
Bearing Alloy ◽  
Lubrication Conditions

Morphology and Tribological Behaviors of In Situ Polymerized Nano-SiO2/Polyacrylate Nanocomposites

2011 ◽  
Vol 266 ◽  
pp. 161-165
Author(s):  
Xiao Lan Hu ◽  
Yan Jie Li ◽  
Yan Ming Dong
Keyword(s):  
Friction Coefficient ◽  
Adhesive Wear ◽  
Interfacial Polymerization ◽  
In Situ Polymerization ◽  
Scratch Resistance ◽  
Nano Sio2 ◽  
Tribological Behaviors ◽  
Sio2 Nanocomposites ◽  
Polymerization Method

An interfacial polymerization method for polyacrylate resin was adapted to fabricate nanocomposites with nano-SiO2 particles via in situ polymerization. The tribological behaviors of the nano-SiO2 nanocomposites are briefly discussed in terms of types of functionalization and nanoparticle loading. Nano-SiO2 functionalization with three silanes improved the nanoparticles interfacial interaction and compatibility in the nanocomposites, resulted in lower friction coefficient and wear mass. And the results of DSC also testified that. The wear mass and friction coefficient of the nanocomposite containing 3 wt% nanoparticles with KH570 silane are 50.8mg and 0.20, respectively. Results of RCA show that the incorporation of the nano-SiO2 into the polyacrylate resin improves the scratch resistance significantly. Results of SEM indicate that the neat polyacrylate resin is dominated by adhesive wear, going with tearing resin, while all nanocomposites containing 3 wt% nanoparticles with silane are dominated by particle adhesive, going with soft adhesive wear.

Tribological Behaviors of Carbon Fiber Reinforced Epoxy Composites Under PAO Lubrication Conditions

2016 ◽  
Vol 62 (3) ◽  
Author(s):  
Fuyan Zhao ◽  
Chuanping Gao ◽  
Honggang Wang ◽  
Tingmei Wang ◽  
Bernd Wetzel ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Epoxy Composites ◽  
Fiber Reinforced ◽  
Tribological Behaviors ◽  
Carbon Fiber Reinforced ◽  
Lubrication Conditions

Tensile and tribological behaviors of PEEK/nano-SiO2 composites compounded using a ball milling technique

2008 ◽  
Vol 68 (15-16) ◽  
pp. 3073-3080 ◽  
Author(s):  
G. Zhang ◽  
A.K. Schlarb ◽  
S. Tria ◽  
O. Elkedim
Keyword(s):  
Ball Milling ◽  
Nano Sio2 ◽  
Tribological Behaviors ◽  
Ball Milling Technique

Tribological behaviors of epoxy composites under water lubrication conditions

2016 ◽  
Vol 95 ◽  
pp. 333-341 ◽  
Author(s):  
C.P. Gao ◽  
G.F. Guo ◽  
F.Y. Zhao ◽  
T.M. Wang ◽  
B. Jim ◽  
...  
Keyword(s):  
Water Lubrication ◽  
Epoxy Composites ◽  
Tribological Behaviors ◽  
Lubrication Conditions

ZrO2-Al2O3 LAMINATED CERAMICS AND THEIR TRIBOLOGICAL BEHAVIORS

2005 ◽  
Vol 12 (01) ◽  
pp. 75-84 ◽  
Author(s):  
ZEHUA ZHOU ◽  
PEIDAO DING ◽  
SHOUHONG TAN ◽  
JUNSI LAN
Keyword(s):  
Mechanical Properties ◽  
Wear Mechanisms ◽  
Dry Friction ◽  
Bending Strength ◽  
Water Lubrication ◽  
Fatigue Wear ◽  
Tribological Behaviors ◽  
Dry Pressing ◽  
Lubrication Conditions ◽  
Better Than

ZrO 2- Al 2O3 laminated ceramics of 3 layers were prepared by dry-pressing and pressureless sintering, and their mechanical properties and toughening mechanisms were studied. Furthermore, their tribological behaviors and wear mechanisms under dry friction and water lubrication conditions were also investigated, and compared with those of monolayer ZrO 2- Al 2O3 ceramics under the same conditions. The results show that the bending strength, fracture toughness and hardness of the laminated ceramics are all better than those of the monolayer ceramics, moreover the friction factor and wear rate of the laminated ceramics are clearly lower than those of the monolayer ceramics. The excellent mechanical properties of the laminated ceramics, especially toughness, result mainly from effects of residual stress in the specially-designed layer, interface structure and phase transformation together. Good tribological properties of the laminated ceramics are supposed due to the high toughness and low shearing stress in the wear surface. The friction and wear of the composites are effectively decreased by water lubrication because of the transformation of the main wear mechanisms from abrasive and adhesive wear under dry friction to tribo-chemical and fatigue wear under water lubrication.

scholarly journals The Synergistic Effects of Sio2 Nanoparticles and Organic Photostabilizers for Enhanced Weathering Resistance of Acrylic Polyurethane Coating

2020 ◽  
Vol 4 (1) ◽  
pp. 23 ◽  
Author(s):  
Thien Vuong Nguyen ◽  
Tuan Anh Nguyen ◽  
Thi Hau Nguyen
Keyword(s):  
Synergistic Effects ◽  
Sio2 Nanoparticles ◽  
Nanocomposite Coating ◽  
Polyurethane Coating ◽  
Nano Sio2 ◽  
Aging Test ◽  
Before And After ◽  
Acrylic Coatings ◽  
Acrylic Polyurethane ◽  
Weathering Resistance

This study aims to evaluate the synergical effects of SiO2 nanoparticles (nano-SiO2) and organic photostabilizers (Tinuvin 384 (T384) and Tinuvin 292 (T292)) on the weathering resistance of acrylic polyurethane coating. Data obtained from infrared (IR), field emission scanning electron microscopy (FESEM), and weight loss of coatings (before and after aging test), suggest that the SiO2 nanoparticles play a dual role, as both reinforcer and UV absorber, thus improving effectively both the mechanical properties and the weathering resistance of polyurethane acrylic coatings. The nanocomposite coating containing 2 wt % nano-SiO2, 2 wt % T384, and 1 wt % T292 exhibits excellent weathering and abrasion resistances, offering a durable outdoor application.

Polyurethane coating in the prevention of nickel dermatitis

1971 ◽  
Vol 103 (1) ◽  
pp. 58-60
Author(s):  
J. C. Moseley
Keyword(s):  
Polyurethane Coating

Biocompatible polyurethane coating for use in pulsatile ventricular asist dvices

2012 ◽  
Vol 60 (S 01) ◽  
Author(s):  
D Wehner ◽  
K Stadtherr ◽  
K Beckenlehner-Lukas ◽  
A Gessner ◽  
C Schmid ◽  
...  
Keyword(s):  
Polyurethane Coating
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