Preparation of UV-Curable Nanocomposite Varnish with High Wear Resistance

2012 ◽  
Vol 229-231 ◽  
pp. 121-125
Author(s):  
Bing Zhi Guo ◽  
Yun Zhao ◽  
Hong Bo Liu ◽  
Yang Jun Huang ◽  
Tong Ying Feng ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Performance Test ◽  
Uv Light ◽  
Sol Gel ◽  
Static Friction ◽  
Fracture Morphology ◽  
High Wear Resistance ◽  
Uv Curable ◽  
Nano Sio2 ◽  
Varnish Film

To enhance the interfacial interaction in silica nanoparticles filled polymer composites , nano-SiO2 gel was prepared by a sol-gel route, and then it was modified in situ through a reaction of silane coupling agent with hydroxyl on the surface of SiO2. The modified nano-SiO2 gel was added to the system of light-cured varnish to prepare UV light-cured nanocomposite varnish. The structures and properties of varnish were studied using Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and film performance test. The results showed that the modified nano-SiO2 was well dispersed in the varnish. After introduction of modified nano-SiO2, the fracture morphology of varnish film showed a corrugated shape, indicating the ductile fracture. The wear resistance of the varnish film increased by 50%, the coefficient of static friction reduced about 15%, and gloss improved to some extent.

scholarly journals Development of Silane-Based Coatings with Zirconia Nanoparticles Combining Wetting, Tribological, and Aesthetical Properties

Coatings ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 368 ◽  
Author(s):  
Sara Lopez de Armentia ◽  
Mariola Pantoja ◽  
Juana Abenojar ◽  
Miguel Martinez
Keyword(s):  
Stainless Steel ◽  
Wear Resistance ◽  
Sol Gel ◽  
Dip Coating ◽  
Zro2 Nanoparticles ◽  
High Wear Resistance ◽  
Surface Protection ◽  
Main Research ◽  
Aesthetic Appearance ◽  
Zirconia Nanoparticles

Silane-based coatings with nanoparticles have been widely used in applications related to surface protection. Between them, the improvement of corrosion resistance by increasing the hydrophobicity is one of the main research goals. However, most coatings present problems of low wear resistance and poor aesthetic appearance. Therefore, the overall goal of this research is to manufacture hydrophobic sol-gel coatings based on silanes which comply with good tribological and aesthetical properties. In the present study, stainless steel plates were coated with a silane-based solution containing zirconia nanoparticles by dip coating. Water–ethanol solutions with silanes (methyltrimethoxysilane (MTS) and tetrathoxysilane (TEOS)) and different percentages of ZrO2 nanoparticles were prepared. Gloss, color, contact angle, surface energy, wear resistance, and thickness of coating were analyzed to elucidate the effect of zirconium oxide on the performance of the coatings. Results demonstrate that the ZrO2–silane coatings on stainless steel offer a balanced combination of properties: low wettability, high wear resistance, and similar color and brightness compared to pristine stainless steel.

Study on Water-Lubricated Graphite Sliding Bearing Performance Test

2013 ◽  
Vol 655-657 ◽  
pp. 636-639
Author(s):  
Yang Yu ◽  
Wei Zhao
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Performance Test ◽  
Performance Testing ◽  
High Wear Resistance ◽  
Widespread Application ◽  
Sliding Bearing ◽  
Temperature Resistance ◽  
Shaft System ◽  
Bearing Friction

Water-lubricated graphite bearing has gradually obtained the widespread application, with its high wear resistance, high temperature resistance and self lubricating, This paper designed the water-lubricated graphite sliding bearing performance testing platform and studied the factors that could affect bearing friction wear rate and the vibration of bearing, such as load, speed and running time. The final results show that the water-lubricated graphite sliding bearing can basically meet the requirements of the blower shaft system.

Novel Uv-Curable Low-Shrinking Silanes as Precursors for the Sol-Gel-Process

1998 ◽  
Vol 519 ◽  
Author(s):  
S. Stein ◽  
N. Moszner ◽  
Th. Voelkel ◽  
V. Rheinberger
Keyword(s):  
Radical Polymerization ◽  
Uv Light ◽  
Sol Gel ◽  
Uv Curable ◽  
New Class ◽  
Sol Gel Process ◽  
Hydrolysis And Condensation ◽  
First Results ◽  
Alkoxy Groups

AbstractThe increasing interest in inorganic-organic nanocomposites which offer the possibility to build up both an inorganic and organic network by hydrolysis and condensation and by polymerization reactions, respectively, leads to the development of a new class of double bond functionalized silanes. These 2-vinylcyclopropyl silanes were synthesized e.g. by reaction of 1-methoxycarbonyl-2-vinylcyclopropane-l-carboxylic acid with 3-isocyanatopropyltriethoxysilane. Hydrolysis and condensation of the alkoxy groups as well as cocondensation with tetraalkoxysilanes lead to solvent-free liquid resins that can be cured by UV-light-induced radical polymerization of the vinylcyclopropane group. The synthesis and characterization of different 2-vinylcyclopropyl silanes, hydrolysation and condensation behavior and first results of the radical polymerization will be discussed.

Wear Resistance of Metal Oxide Sol-Gel Coatings Deposited over Ceramic Glazes

2009 ◽  
Vol 423 ◽  
pp. 47-53 ◽  
Author(s):  
R. Galindo ◽  
C. Gargori ◽  
S. Cerro ◽  
J. Badenes ◽  
G. Monrós
Keyword(s):  
Wear Resistance ◽  
Metal Oxide ◽  
Screen Printing ◽  
Sol Gel ◽  
High Wear Resistance ◽  
Oxide Coatings ◽  
Metal Oxide Films ◽  
Tio2 Anatase ◽  
Molar Composition ◽  
Ceramic Glaze

This paper analyse the wear resistance of high reflective metal oxide films of TiO2 (anatase), Fe2O3 (hematite), ZrO2 (Zirconia) and SnO2 (Casiterite) deposited by screen printing over a conventional ceramic glaze (molar composition 0,2CaO.0,15ZnO.0,05K2O.0,1Al2O3 0,45SiO2.0,05ZrO2). All oxide coatings increase the gloss of the substrate producing a lustre effect. Anatase films stand out for their high gloss valour and low roughness Ra. Likewise, all lustres improve the wear resistance of the glaze substrate. Hematite and casiterite coatings stand out for their relatively high wear resistance maintaining relatively high reflectivity.

UV Curable Organic-Inorganic Hybrid Materials

2000 ◽  
Vol 628 ◽  
Author(s):  
Guang-Way Jang ◽  
Ren-Jye Wu ◽  
Yuung-Ching Sheen ◽  
Ya-Hui Lin ◽  
Chi-Jung Chang
Keyword(s):  
Hybrid Materials ◽  
Colloidal Silica ◽  
Sol Gel ◽  
Solution Ph ◽  
Uv Curable ◽  
Inorganic Hybrid ◽  
Degradation Temperature ◽  
Sol Gel Process ◽  
The Stability ◽  
Thermal Degradation Temperature

This work successfully prepared an UV curable organic-inorganic hybrid material consisting of organic modified colloidal silica. Applications of UV curable organic-inorganic hybrid materials include abrasion resistant coatings, photo-patternable thin films and waveguides. Colloidal silica containing reactive functional groups were also prepared by reacting organic silane and tetraethyl orthosilicate (TEOS) using sol-gel process. In addition, the efficiency of grafting organic moiety onto silica nanoparticles was investigated by applying TGA and FTIR techniques. Experimental results indicated a strong interdependence between surface modification efficiency and solution pH. Acrylate-SiO2 hybrid formation could result in a shifting of thermal degradation temperature of organic component from about 200°C to near 400°C. In addition, the stability of organic modified colloidal silica in UV curable formula and the physical properties of resulting coatings were discussed. Furthermore, the morphology of organic modified colloidal silica was investigated by performing TEM and SEM studies‥

LUCEFIN GROUP 16MnCr5 (1.7131), 16MnCrS5 (1.7139)

Alloy Digest ◽  
2020 ◽  
Vol 69 (8) ◽  
Keyword(s):  
Wear Resistance ◽  
Fatigue Strength ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
High Wear Resistance ◽  
Medium Size ◽  
Case Hardening ◽  
Low Carbon

Abstract Lucefin Group 16MnCr5 and 16MnCrS5 are low-carbon, 1.2Mn-1Cr, alloy case-hardening steels that are used in the carburized or carbonitrided, and subsequently quench hardened and tempered condition. In general, these steels are used for small and medium size parts requiring high wear resistance and fatigue strength. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on forming, heat treating, machining, and joining. Filing Code: SA-864. Producer or Source: Lucefin S.p.A.

AIR-4

Alloy Digest ◽  
1963 ◽  
Vol 12 (2) ◽  
Keyword(s):  
Wear Resistance ◽  
Physical Properties ◽  
Tool Steel ◽  
Heat Treating ◽  
High Wear Resistance ◽  
Bethlehem Steel Corporation ◽  
Steel Corporation ◽  
Machining Characteristics

Abstract BETHLEHEM AIR-4 is a medium alloy air-hardening tool steel having low deformation, high wear resistance and hardness, deep hardening properties and adequate toughness for severe service. It has excellent free-machining characteristics. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, machining, and joining. Filing Code: TS-129. Producer or source: Bethlehem Steel Corporation.

BÖHLER M261 EXTRA

Alloy Digest ◽  
2015 ◽  
Vol 64 (12) ◽  
Keyword(s):  
Wear Resistance ◽  
Physical Properties ◽  
Compressive Stress ◽  
Precipitation Hardening ◽  
Heat Treating ◽  
Steel Grade ◽  
High Wear Resistance ◽  
Hardened Condition

Abstract Böhler (or Boehler) M261 Extra is a precipitation hardening steel grade for plastic molds with good machinability in the precipitation hardened condition. It is used in the processing of plastics by offering high compressive stress and high wear resistance. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on heat treating and machining. Filing Code: TS-732. Producer or source: Böhler Edelstahl GmbH & Company KG. See also Alloy Digest TS-736, September 2016.

YSS HAP72

Alloy Digest ◽  
2019 ◽  
Vol 68 (10) ◽  
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Powder Metallurgy ◽  
Tool Steel ◽  
High Speed ◽  
High Wear Resistance ◽  
Bend Strength ◽  
Temperature Performance ◽  
Very High

Abstract YSS HAP72 is a powder metallurgy high-speed tool steel with a very high wear resistance. This datasheet provides information on composition, hardness, and bend strength. It also includes information on high temperature performance. Filing Code: TS-779. Producer or source: Hitachi Metals America Ltd.

FINKL WF-XTRA

Alloy Digest ◽  
2000 ◽  
Vol 49 (1) ◽  
Keyword(s):  
Fracture Toughness ◽  
Wear Resistance ◽  
Tensile Properties ◽  
Heat Treating ◽  
High Wear Resistance ◽  
Optimum Diameter ◽  
High Production ◽  
Operating Temperatures

Abstract Finkl WF-XTRA has high wear resistance while retaining moderate fracture toughness. The alloy is recommended for larger die blocks. The optimum diameter for hardenability is 838 mm (33 in.). It is appropriate for use in high-production hammers where die temperatures may be above average or in presses with moderately high operating temperatures. This datasheet provides information on composition, microstructure, hardness, and tensile properties as well as fracture toughness. It also includes information on heat treating, machining, and joining. Filing Code: TS-570. Producer or source: A. Finkl & Sons Company.

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