Effect of the particle size of nanosilica on the performance of epoxy/silica composite coatings

2005 ◽  
Vol 40 (15) ◽  
pp. 3927-3932 ◽  
Author(s):  
Junjie Yuan ◽  
Shuxue Zhou ◽  
Guangxin Gu ◽  
Limin Wu
Keyword(s):  
Particle Size ◽  
Composite Coatings ◽  
Silica Composite

scholarly journals Studying the Influence of Mica Particle Size on the Properties of Epoxy Acrylate/Mica Composite Coatings through Reducing Mica Particle Size by the Ball-Milled Method

Coatings ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 98
Author(s):  
Yaling Da ◽  
Jianxing Liu ◽  
Zixian Gao ◽  
Xiangxin Xue
Keyword(s):  
Particle Size ◽  
Ball Milling ◽  
Composite Coatings ◽  
High Energy ◽  
Particle Sizes ◽  
Epoxy Acrylate ◽  
Pencil Hardness ◽  
Uv Curable ◽  
Chemical Structures ◽  
Mica Composite

In this work, a series of epoxy acrylate (EA)/mica composite coatings were synthesized through introducing mica powders of different particle size into epoxy acrylate coatings and using an ultraviolet (UV) curing technique to investigate the influence of mica particle size on the coatings. Mica powders of different particle sizes were obtained by ball-milling for 4, 8, 12, 16, and 20 h with a planetary high-energy ball mill. The particle size and morphologies of ball-milled mica powders were characterized by laser particle size analyzer and scanning electron microscopy (SEM). The results indicated that planetary ball-milling reduced the particle size of mica powders effectively. Mica powders that were un-ball-milled and ball-milled were added into the epoxy acrylate matrix by a blending method to synthesize the organic-inorganic UV curable coatings. The optical photographs of the coatings showed greater stability of liquid mixtures with smaller particle size fillers. The chemical structures of EA/mica composite coatings were investigated by Fourier transform infrared spectroscopy (FTIR), and the conversion rate of C=C bonds was calculated. The results indicated that the C=C conversion of coatings with mica powders of smaller particle sizes was higher. Tests of mechanical properties and tests using electrochemical impedance spectroscopy (EIS) showed that pencil hardness, impact resistance, and coating resistance were improved due to the reduction of mica powders particle size.

Fabrication of Zirconia Coatings using Electrophoretic Deposition and Reactive Sintering

2002 ◽  
Vol 750 ◽  
Author(s):  
Ying Yuan ◽  
Xin Wang ◽  
Ping Xiao
Keyword(s):  
Particle Size ◽  
Thermal Treatment ◽  
Electrophoretic Deposition ◽  
Powder Mixture ◽  
Milling Time ◽  
Composite Coatings ◽  
Thermal Analyses ◽  
Reactive Sintering ◽  
Attrition Milling ◽  
Al Composite

ABSTRACTElectrophoretic deposition (EPD) technique has been used to fabricate green YSZ/Al composite coatings with controlled thickness and morphology. Such green coating was transformed into the YSZ/Al2O3 composite coating during following thermal treatment in air at temperatures up to 1200°C. Suspension for EPD was prepared by attrition-milling a mixture of yttria -stabilised zirconia (YSZ) and aluminium (Al) in acetyl-acetone (ACAC). The attrition milling reduced the particle size of the powder mixture. A mechanical alloying behaviour is believed to control the agglomeration and the breaking of large Al particles. Attrition milling also reduced the YSZ crystallite size, which can be attributed to the chemical reaction between YSZ/Al particles and ACAC. Thermal analyses and dilatometry measurements of the green compact indicate the temperature range for oxidation of Al and its effect on sintering of the coating. The coating obtained from EPD in the suspension after a longer milling time was found to have more uniform in microstructure.

Effects of ceramic particle size on microstructure and the corrosion behavior of cold sprayed SiCp/Al 5056 composite coatings

2017 ◽  
Vol 315 ◽  
pp. 314-325 ◽  
Author(s):  
Yingying Wang ◽  
Bernard Normand ◽  
Nicolas Mary ◽  
Min Yu ◽  
Hanlin Liao
Keyword(s):  
Particle Size ◽  
Corrosion Behavior ◽  
Composite Coatings ◽  
Ceramic Particle

Mechanical Milling Prepared Ultrafine Al2O3 Particles Utilized in Brush Plating Ni-P-Al2O3 Coatings and Influence of Heat Treatment to the Performance of the Coatings

2013 ◽  
Vol 395-396 ◽  
pp. 755-758
Author(s):  
Ai Zhi Yu ◽  
Lian Wang ◽  
Mao Dong Li ◽  
Jin Mei Lin ◽  
Wen Yu
Keyword(s):  
Heat Treatment ◽  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Abrasion Resistance ◽  
Mechanical Milling ◽  
Erosion Resistance ◽  
Composite Coatings ◽  
Brush Plating ◽  
Steel Substrates

In this paper, ultrafine Al2O3 particles were prepared by mechanical milling, and Ni-P-Al2O3 composite coatings were plated on Q235 steel substrates by brush-plating, which plating solutions were containing different concentrations Al2O3 particles. The morphology, phase and particle size distribution of the as-prepared Al2O3 particles, and the properties of the coatings after heat treatment were investigated. The results show that, the morphology of the as-prepared Al2O3 particles were spherical and almost size under 200nm, the coatings were uniformly thickness and the Al2O3 particles were uniformly dispersed in the coatings. Heat treatment could improve the performances of the brush-plating Ni-P-Al2O3 layers. After 1 hour heat treatment in 400°C, the layer which phosphoric content about 2.3wt% had high rigidity, good abrasion-resistance and adhesion strength, and the layer which phosphoric content about 10.1wt% has good erosion-resistance after 1h heat treatment in 600°C.

scholarly journals Silver nanocluster/silica composite coatings obtained by sputtering for antibacterial applications

2012 ◽  
Vol 40 ◽  
pp. 012037 ◽  
Author(s):  
M Ferraris ◽  
C Balagna ◽  
S Perero ◽  
M Miola ◽  
S Ferraris ◽  
...  
Keyword(s):  
Composite Coatings ◽  
Silver Nanocluster ◽  
Silica Composite
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