scholarly journals Effect of different contents of nano-SiO2 particles on water diffusion behavior in insulating oil

AIP Advances ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 105022
Author(s):  
Qian Wang ◽  
Shiling Zhang ◽  
Wenxin Tian ◽  
Xiong Liu ◽  
Dongyuan Du ◽  
...  
Keyword(s):  
Water Diffusion ◽  
Diffusion Behavior ◽  
Nano Sio2 ◽  
Insulating Oil ◽  
Sio2 Particles

scholarly journals The Effect and Associate Mechanism of Nano SiO2 Particles on the Diffusion Behavior of Water in Insulating Oil

Materials ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 2373 ◽  
Author(s):  
Wenxin Tian ◽  
Chao Tang ◽  
Qian Wang ◽  
Shiling Zhang ◽  
Yali Yang
Keyword(s):  
Free Volume ◽  
Breakdown Voltage ◽  
Volume Fraction ◽  
Mean Square Displacement ◽  
Nano Particles ◽  
Dynamics Simulation ◽  
Water Molecules ◽  
Nano Sio2 ◽  
Insulating Oil ◽  
Sio2 Particles

Moisture has a significant effect on the internal insulation performance of transformers, and is closely related to the breakdown voltage of transformer insulating oil. In the present work, we studied the effect of nano-SiO2 particles on the diffusion of water in insulating naphthenic mineral oil using molecular dynamics simulation. Six models were established, three of which contained nano-SiO2 particles together with water concentration of 1 wt.%, 2 wt.%, or 3 wt.%. For each model variations in free volume, mean square displacement, and interaction energy were assessed. The addition of nano SiO2 particles was found to reduce the free volume fraction of the model and as well as the free motion of water molecules in the oil. These particles also increased the interaction between the oil and water molecules, indicating that insulating oil containing nano-particles has a greater binding effect on water. The diffusion coefficient of water in oil containing nano-SiO2 particles was reduced, such that water molecules were less likely to diffuse. The results also show that these particles adsorb water molecules in the oil and to reduce diffusion. Consequently, the addition nano-scale SiO2 particles could potentially improve the breakdown voltage of the insulating oil.

Water Diffusion Behavior in Epoxy Resins with Various Fluorine Contents

2006 ◽  
Vol 60 (4) ◽  
pp. 392-397 ◽  
Author(s):  
Liang Li ◽  
Yin Chen ◽  
Shanjun Li
Keyword(s):  
Epoxy Resins ◽  
Water Diffusion ◽  
Diffusion Behavior

Largely improved toughness of PP/EPDM blends by adding nano-SiO2 particles

Polymer ◽  
2007 ◽  
Vol 48 (3) ◽  
pp. 860-869 ◽  
Author(s):  
Hong Yang ◽  
Xiaoqing Zhang ◽  
Cheng Qu ◽  
Bo Li ◽  
Lijuan Zhang ◽  
...  
Keyword(s):  
Nano Sio2 ◽  
Sio2 Particles

Double Sealing of Ultrasonic Micro-Arc Oxidation Coating on Pure Magnesium by Nano-SiO2 Particles and SiO2 Sol Sealing Agent

2014 ◽  
Vol 1030-1032 ◽  
pp. 48-51
Author(s):  
Wei Wei Sun ◽  
Mu Qin Li ◽  
Yan Gao ◽  
Jiang Liu
Keyword(s):  
Corrosion Resistance ◽  
Bone Growth ◽  
Corrosion Current ◽  
Pure Magnesium ◽  
Infrared Spectrometry ◽  
Nano Sio2 ◽  
Micro Arc Oxidation ◽  
Sio2 Particles ◽  
Si Content ◽  
Sealing Coating

A double sealing coating was prepared on ultrasonic micro-arc oxidized pure magnesium substrate by adding nano-SiO2 particles as additive in the plating solution and coating SiO2 sol as sealing agent. The bonding characters of SiO2 sol was analyzed by Fourier transformed infrared spectrometry (FTIR). The compositions and morphology of seal coating were characterized by energy-dispersive X-ray spectroscopy (EDS) and scanning electron microscopy (SEM), respectively. The corrosion resistance of the micro-arc oxidized and the sealed pure magnesium substrate were studied. The results showed that the Si content increased gradually with the addition of nano-SiO2 particles and the SiO2 sol sealing. It was benefit to create bioactive MgSiO3, which promoted the bone growth. The double sealed pure magnesium had a self-corrosion potential shifted positively by 60mV as well as a self-corrosion current density decreased by a half in a 3.5wt% NaCl solution, showing good corrosion resistance.

Performance of Cement Systems with Nano-SiO2 Particles Produced by Using the Sol–Gel Method

2010 ◽  
Vol 2141 (1) ◽  
pp. 10-14 ◽  
Author(s):  
I. Flores ◽  
K. Sobolev ◽  
L. M. Torres-Martinez ◽  
E. L. Cuellar ◽  
P. L. Valdez ◽  
...  
Keyword(s):  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Nano Sio2 ◽  
Sio2 Particles

Teratogenic responses of zebrafish embryos to decabromodiphenyl ether (BDE-209) in the presence of nano-SiO2 particles

Chemosphere ◽  
2017 ◽  
Vol 178 ◽  
pp. 449-457 ◽  
Author(s):  
Shu-Ju Chao ◽  
Chin Pao Huang ◽  
Pei-Chung Chen ◽  
Chihpin Huang
Keyword(s):  
Zebrafish Embryos ◽  
Decabromodiphenyl Ether ◽  
Nano Sio2 ◽  
Sio2 Particles ◽  
Bde 209
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