Materials Literature
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A new unsymmetrical isomeric photochromic diarylethene, 1-[2-methyl-3-naphthalen-2-[2-methyl-5-(10-phenanthrenyl)-3-thienyperfluorocyclopentene, was designed and synthesized. Its photochromic and fluorescent properties were also investigated in detail. The compound exhibited excellent photochromism, changing from colo…
This paper describes partial discharge (PD) performances of electronic transformers which play an important part in switching power supply which has lower lose, smaller size and high efficiency compared with the traditional line-electric power supply. Electronic transformers in switching power supply always worked und…
Sulfonated endcapped poly (arylenethioethersulfone) copolymer (SPTES) was synthesized through direct copolymerization of sulfonated monomers and poly (vinyl alcohol) (PVA) was crosslinked with SPTES by the dehydration method. The mechanical characteristics of polymer actuators are investigated. Nafion actuators as a c…
Abstract C17H11ClMn0.50N3O2, monoclinic, P21/c (no. 14), a = 8.542(1) Å, b = 16.186(2) Å, c = 11.652(2) Å, β = 103.160(3)°, V = 1568.6 Å3, Z = 2, Rgt(F) = 0.0415, wRref(F2) = 0.1069, T = 293 K.
In this paper, the ageing degree of recovered asphalt collected from old asphalt mixture is firstly estimated by comparing with virgin asphalt. Then, two kinds of different recycling agents are selected to mix with recovered asphalt. The influence of recycling agent type and content on regenerated asphalt performance…
Life cycle energy consumption and environment emission assessment model of vehicle new energy fuels is established. And life cycle energy consumption and environmental pollutant emissions of new energy fuels are carried out. Results show that the full life cycle energy consumption of alcohol fuels is highest, and the…
A novel aurous complex containing thiourea and thiocyanate as the mixed ligands is synthesized by the ISRC method in this paper. Its formula is determined as [Au (tu)2 ]SCN H2O by elemental analysis. The electrochemistry studies show it is a typical ionic compound and its conductivity reaches 13×10-4 Sm2mol-1. TG stud…
Over the past several years, the inherent scaling limitations of electron devices have fueled the exploration of high carrier mobility semiconductors as a Si replacement to further enhance the device performance. To ensure effective gate control, semiconductors with ultrathin body thickness are needed. At such regime,…
The single side SiO2 antireflective film was prepared by roller coating method on solar glass, and the SiO2 sol was prepared using sol-gel method via two steps reactions. The thickness of the film can be adjusted by controlling the roller speed, and the variation of the film thickness can alter the transmittance peak…
Cellulose is regarded as a kind of biomass with high quantity, the proper utilization could realize energy recovery and high-value product recovery. Cellulose degradation is of great importance for its utilization. This article introduced the isolation, characteristic and the mutual effect of compound cellulose degrad…
The effective strain size and distribution of Al-5Ti-1B alloy deformed by equal channel angular pressing (ECAP) were investigated through the finite element simulation by the die with outer corner ψ=0°, 20°, 30° and the friction coefficient f=0, 0.2, 0.3. The simulation results show that the effective strains decrease…
Polyethylene/montmorillonite (PE/MMT) nanocomposites were prepared by in situ polymerization. The dynamic mechanical properties and phase structure of PE/MMT nanocomposites at different MMT concentrations (from 0.1 to 1.2 wt %) were studied. The storage modulus of PE/MMT nanocomposites is higher than that of the polym…
A new photochromic diarylethene compound 1-(2-cyan-3-phenyl)-2-[5-(4-cyanobenzene) -2-methyl-3-thienyl] perfluorocyclopentene was synthesized. And their properties inculding photochromis, fluorescence in both hexane and solid films, reaction kinetics of cyclization and cycloreversion were studied. And its absorption m…
Nickel base multi-component alloy Ni-PNi-Cu-PNi-W-P and Ni-Co-P were prepared using electroless plating methodand examined by scanning electronic microscope, x-ray diffractometer and x-ray flourometer respectively on its morphology, component and structure characteristic. Thermodynamic stability of the three samples w…
Solidification experiment a graphite mold was carried out on ternary alloy Al-4.61Cu-0.92Si and typical dendrite microstructure was obtained. The influence of heat treatment on microsegregation between the dendrite, and the amount and morphology of the non-equilibrium eutectic phases were studied. Line scans results s…
2-dimensional (2D) electronic materials such as graphene have emerged as attractive candidates for tunnel devices and circuits for achieving ultra-high energy-efficiency. This paper highlights a few novel tunnel device and circuit concepts based on graphene. Major challenges of 2D materials relevant to such applicatio…
The present article describes one new adsorbent, polyaniline modified by 3-oxa-diglycolamide. Polyaniline was synthetized by reversed-phase microemulsion method and 3-oxa-diglycolamide was synthetized by our laboratory. The factors effecting on adsorption were studied. It shows good adsorption performance on Cu2+ion.
철 이온을 담지시킨 BEA 제올라이트에서 $N_2O$ 가 분해되는 반응을 조사하여 열처리 온도가 촉매의 활성에 미치는 영향을 고찰하였다. $N_2O$ 분해 반응 실험 결과, Fe/BEA 촉매에 대한 열처리 온도가 증가함에 따라 $N_2O$ 분해 활성이 현저히 줄어들었다. 열처리 온도의 증가에 따른 Fe/BEA 촉매의 입자모양 및 크기의 변화는 크지 않았지만, 열처리 온도 증가에 따라 비표면적이 크게 줄어들었다. 또한 열처리온도가 증가함에 따라 ${\beta}$ 구조의 결정성이 크게 낮아지는 것을 확인하였고, 열처리 온도가 높아질수록 SiO 구조는 증가하거나 크게 변…
We report the growth and characterization of a Si-doped, n-type AlGaN layer with 45% Al composition. For the application of n-type AlGaN layers with high Al compositions in ultraviolet emitters, we fabricated an n-Al 0.45 Ga 0.55 N layer with high crystalline quality and high electrical conductivity by inserting Al 0.…
In order to understand the effect of β-diketone ligands containing carbazole group on luminescent europium (III) complexes, a series of europium (III) complexes (Phen)Eu (DBM)3-nLnwith 1-(9-Ethyl-9H-carbazol-3-yl)-4,4,4-trifluorobutane-1,3-dione (L) were synthesized and investigated contrastively (n = 0, 1, 2, 3; DBM:…