Results 21 to 30 of about 25,326 (262)
Shuiwen dizhi gongcheng dizhi, 2023 In order to explore the effectiveness of salt and heat tracers in a fracture-matrix system, a fracture-matrix test model is designed. The tracer tests with different tracers are carried out.
Rui DING +4 more
doaj +1 more source
Study on Electrical Properties of PALF Reinforced Bisphenol-A Composite
MATEC Web of Conferences, 2018 These days, composite materials successfully substitute the traditional materials due to its various significant applications. This paper examines the influence of fiber orientation and fiber length on electrical properties of PALF reinforced Bisphenol-A
Vinod B., Sudev L. J.
doaj +2 more sources
Applied Sciences, 2019 Polyethylene cables, as important transmission equipment of modern power grid, would inevitably be slightly damaged, which seriously threatens the safety of the power supply.
Youyuan Wang +3 more
doaj +1 more source
Thermal conductivity and dielectric properties of bismaleimide/cyanate ester copolymer
High Voltage, 2017 The blend was synthesised with bismaleimide (BMI) resin and bisphenol A-based cyanate ester (BADCy) resin. The BMI/BADCy copolymer showed excellent dielectric and thermal conductivity properties. The volume resistivity of the copolymer was a little lower
Lin Wan +3 more
doaj +1 more source
Early hydration heat release and strength evolution of cemented backfill with graded fine tailings
工程科学学报, 2023 In this work, the early hydration reaction and mechanical evolution characteristics of graded fine tailing cemented backfill are studied. The hydration exothermicity and electrical resistance characteristics of backfill slurry with different lime sand ...
Yun-peng KOU +5 more
doaj +1 more source
Preparation of Graphene and Its Effect on Conductivity Epoxy Resin
Cailiao gongcheng, 2018 High quality graphene and its epoxy composites were prepared by exfoliation of first stage FeCl3-GICs with sodium borohydride (NaBH4) aqueous solution, followed by compounding with epoxy resin.
QIAO Xu, LIN Zhi, LIN Xiao-dan
doaj +1 more source
Effect of Environmental Temperature on the Insulating Performance of Epoxy/MgO Nanocomposites
Applied Sciences, 2020 This article reports on the development of nano-MgO/epoxy resin composites with various mass ratios via a solution blending method. The influence of MgO nanofillers on the thermal properties and the effect of environmental temperature on the insulating ...
Guanghui Ge +3 more
doaj +1 more source
Energies, 2017 The insulating performance of oil is vulnerable to particles especially the conductive particles. This paper investigated the influence of copper particles of micrometer size on the breakdown strength and frequency-dependent properties of vegetable oil ...
Jing Zhang +4 more
doaj +1 more source
Electrical properties evaluation of double‐layer nano‐filled oil‐paper composites
IET Science, Measurement & Technology, 2021 Oil‐paper composite is the main insulation system in oil‐filled transformers. In recent years, the use of nanotechnology to improve the electrical and thermal properties of transformer oil has become a field of research interest.
Amr M. Abd‐Elhady +2 more
doaj +1 more source
Comparison of Methods to Quantify Volume During Resistance Exercise [PDF]
Journal of Strength and Conditioning Research, 2009 The purpose of this investigation was to compare 4 different methods of calculating volume when comparing resistance exercise protocols of varying intensities. Ten Appalachian State University students experienced in resistance exercise completed 3 different resistance exercise protocols on different days using a randomized, crossover design, with 1 ...
McBride, Jeffrey M. +5 more
openaire +4 more sources