Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Monomer casting polyamide 6 (MCPA6) was modified by zeolite whose microstructure owns nanoscale holes which has excellent interfacial compatibility with MCPA6. The zeolite / MCPA6 composites were prepared by anionic in-situ polymerization. FTIR indicated that the addition of zeolite did not cause adverse reaction in t…
Catalytic combustion technology can effectively reduce the temperature of the combustion reaction and significantly inhibit the formation of NOx. Perovskites catalyst materials have high stability, varied chemical composition, and low cost etc. A combination of catalytic combustion technology and perovskite catalyst m…
The results of development and studies of humidity-sensitive elements based on a carbon-nanotube bundle are presented. It has been demonstrated that arrays of nanotubes grown by the low-temperature plasma-chemical method on planar silicon structures have exceptional sensitivity to humidity. The ratio of the structure…
Atomic layer deposited Al2O3/III-nitride interfacial charge properties were investigated experimentally. Substantial amount of positive interface fixed charges (> 1.8×1013cm-2) were observed on all the orientations of GaN and Ga-polar AlGaN. These interface charges bring large impact on electron transport especially i…
This study is concerning the influences of nitrogen content and aging precipitates on pitting corrosion resistance properties of high nitrogen austenitic stainless steel (HNS) through potentiodynamic polarization method. The microstructure of aged HNS is analized by scanning electron microscopy (SEM). The main results…
The process of explosive hardening of hadfield steel by a new flexible explosive was researched, and the change of hadfiled steel metallurgical structure was observed. The results show that: 1. Three times of explosive hardening by using 3mm explosive fill the demands of process (the surface hardness above 350HB,the h…
In order to achieve the GIS fault detection and defect type recognition, four typical defect models were designed and discharge tests are carried out aiming at insulation defect as well as discharge characteristics in the GIS .With a large number of ultra high frequency envelope signal ,a method of domain feature extr…
Hydrogen sensing characteristics of graphite based Schottky diodes fabricated by printing colloidal graphite on bare n-type Si substrates and those partly covered with Pt nanoparticles (NPs) was investigated. Decoration of Si substrates with Pt NPs was performed by electrophoretic deposition. We demonstrate that the p…
Structures of Dibenzo-18-crown-6(DB18C6), Di-methyl-dibenzo-18-crown-6(DMB18C6), Di-tert-butyl-dibenzo-18-crown-6(DTBB18C6), Di-tert-amyl-dibenzo-18-crown-6(DTAB1C6) and their complexes with strontium ion were optimized based upon DFT at B3LYP using 3-21G basis. The binding energy of crown ethers with Sr2+ was calcula…
To study the structure-property relationships of new chiral liquid crystalline materials based on menthol and explore their potential applications, a monomer 4-(4-allyloxybenzoyloxy) phenyl-4-menthyl-oxyacetyloxybiphenyl-4-carboxylate (LCM) and the corresponding homopolymer (LCP) were synthesized. The chemical structu…
Condensate polishing filter materials are water-insoluble organic polymers. But in air-cooled condenser, high temperature condensing water in summer which approaching and exceed 60°C, which may result in filter materials degradation and release impurities. This paper discusses dissolution characteristics of four kinds…
The finite element method (FEM) is used to investigate the near-field enhancement of gold paired-strips nanoantennas. The integral enhanced localized field within 100nm thin slab is 2.4 times larger than single-strip gratings.
As the inductance of magnetic cores is the most important parameter for their service performance. Four coupling models of EE-type ferrite cores are established to analyze the relationship between surface quality and the inductance of ferrite cores. Besides, 3D FEM simulation of different models is made by ANSOFT MAXW…
In a scanning electron microscope (SEM), the electron beam emitted from an electron gun is focused by a lens and then scanned onto the substrate. The SEM images are obtained by detecting the secondary electrons produced by the interactions between the primary electrons and the substrate material. Currently, various ki…
It is important to know the profiles of partial discharge (PD) signals caused by different interior defaults in GIS and measured by outer ultra-high frequency (UHF) antenna prior to their default identifications. In this paper, four classes of typical physical models in GIS were structured and tested to produce UHF PD…
The aluminum (Al) tube beam was reinforced by CFRP, and the low speed impact test was performed with five different lay-up sequences and two different laminate thicknesses. Stable symmetric crushing mode accompanying one or two layers of lobes with plastic hinge were observed in all specimens. Each direction of carbon…
Lipase from Candida rugosa (CRL) was used to catalyze the transesterification of vinyl acetate with 2-hydroxymethyl-1,4-benzodioxan in ionic liquid microemulsions (H2O/[BmiPF6, water in 1-butyl-3-methylimidazolium hexafluorophosphate), and the results demonstrated that CRL could preserve higher catalytic activity in H…
According to the electric field intensity of oblique hundred-needle electrodes (OHNE), the discrete equations based on the indetermination linear current density were established by the boundary element integral equations (BEIE) The non-uniform distribution of the current flowing from hundred-needle electrodes was ima…
Power transformer is one of the most important power transmission equipments in the power system. The reliability and operational efficiency of power system is directly related to its performance and quality. The insulation paper used in oil-immersed transformer cannot resist high temperature, and the significant diff…
because of the existence of non-linear loads,they will be inpouring a lot of harmonic current to the power system,in order to restrain harmonic,we have to take relevant measures to restrain. This paper introduces three measures of harmonic restraint firstly, expounds the active power filter, and then it analyses the w…