Materials Literature
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In the photoelectrochemical cells(PECs),the electrolyte plays an important role in the electron transfer process.In order to improve the overall efficiency of photoelectrochemical cells,it is necessary to seek out the optimal electrolyte.In this paper,the influences of six types of electrolytes on the Ⅰ-Ⅴ properties o…
By using liquid chemical deposition method,silver nitrate as raw material,hydrazine hydrate as reducing agent,polyvinylpyrrolidone(PVP) as disperse agent,ultrafine silver powder was prepared by dropping silver nitrate into reducing solution at room temperature,and then separated by filtrating with millipore filter.The…
Starting with moisture-transfer mechanism of absorption quick dry fiber,ramie,cotton,modified polyester/cot-ton(80/20) blend yarn,modified polyester/ramie(75/25) blend yarn are used as materials to produce 5 plain fabrics,then the series indexes of property of wet comfortableness property are tested.The result shows t…
The title centrosymmetric binuclear complex,[Cu2(C2O4)(C12H8N2)2(C3H7NO)2](ClO4)2(1),was synthesized by the reaction of 1,10-phenanthroline,2,5-dihydroxy-1,4-dithiane and Cu(ClO4)2·6H2O.Then the complex was characterized by IR spectra and elemental analysis.The thermal decomposition of the complex was studied by TG te…
Research on the influence of the electric pulse on the solidification structure of oriented silicon steel was preformed.Electric pulses in different parameters were applied to molten steel and results were compared.The result shows that solidification structure of oriented silicon steel can be improved by the electric…
The stiffness property of the section-changed plate spring with fiber composite materials embedded shape memory alloy(SMA) was studied.First,basic mechanical properties of the SMA material most in use was analyzed and restrained recovery characteristics based on the Brinson constitutive model were discussed.Based on t…
The title compound((H3NCH2CH2NHCH2CH2NH3)2[(HPO4)2Mo5O15],Mr=1121.99) is synthesized by hydrothermal reaction.It crystallizes in a triclinic system with space group P-1 and unit cell parameters :a= 0.980 6(2)nm,b= 0.995 2(2)nm,c=1.468 0(3)nm,α= 95.46(3)°,β= 98.88(3)°,γ= 95.70(3)°,V=1.399 6(5)nm3,Z=1,Dc = 2.648 mg/m3,…
The pyrolysis characteristics of extruded polystyrene(XPS) was studied using combined analysis of thermogravimetry and Fourier transform infrared spectrometry(TG-FTIR).It showed that the initial melt temperature was about 78 ℃,the melt temperature was 100 ℃,the melt flow temperature was 212 ℃.Thermogravimetric rate of…
The application of magnesium alloys in rail transportation,explore the necessity of magnesium alloy used on train make it lightweight,conclude that magnesium alloys due to its unparalleled advantages about performance and resources will replace steel and aluminum materials.
The effects of Nb-V addition,heating temperature and holding time on surface decarburization of spring steel 60Si2MnA were studied.And the relationship between the decarburization layer depth and heating temperature,holding time was discussed using fick's second law.Besides,the mechanism of Nb-V on reducing surface de…
Due to harsh and inconstant production conditions in collieries,a variety of non-normal damage and failures easily happen to the sliding shoe of the shearer,among which,wearing is the most serious problem.In order to improve the wear resistance of the sliding shoe of the shearer,the material of the sliding shoes is pr…
The temperature rise characteristics of three types of discharge coils under three conditions are compared based on the temperature rise tests discharge coils with rated load,temperature rise test of second short-circuit of rated voltage and temperature rise test of discharge of rated power.The temperature rise situat…
The effects of solution-cold rolling-aging process on the mechanical properties,electrical conductivity and microstructure of Cu-Zn-Ni-Al alloy with high strength electrical conductivity and elasticity were studied.The results show that the tensile strength,yield strength and electrical conductivity of the alloy incre…
Chromaticity value is an important factor index of evaluating the morphology of the thin films surface.Currently the research work about the effects of various environmental factors on the surface chromaticity of thin films is a little,and most of them focused on a single factor.In this paper,the surface chromaticity…
In order to develop one kind of fiber film with sustained drug delivery,poly(L-lactic acid)/flurouracil(PLLA/FU) composite nanofiber film were prepared by electrospinning.The influence of mass fraction of PLLA and relative ratios of fluorouracil on the morphology of the composite nanofibers was discussed.The mechanica…
Unsaturated wet-strength agent was synthesized with styrene(St),glycidyl methacrylate(GMA) and isoprene,which contains some reactive groups such as carbon-carbon double bonds and epoxy groups.Fourier-Raman spectrometer was used to analyze the structure of polymer.Through a large number of experiments,it is showed that…
A porous anodic aluminum oxide (AAO) template was prepared by using two-step anodizing in association with step-by-step voltage decrement. On resultant AAO template, single crystal Ni nanowire arrays were prepared by alternating current electrodeposition. The morphology and structure of Ni nanowires were characterized…
The (1-x)(0.5NaNbO3-0.5KNbO3)-x(0.8Na0.5Bi0.5TiO3-0.2K0.5Bi0.5TiO3)(x=0,0.01,0.02,0.03,0.04 and 0.05) (KNN-BNKT) lead-free piezoelectric ceramics were prepared by the HPLC method of coated.The effects of BNKT-doped amount on the phase structure,dielectric and piezoelectric properties of KNN ceramics were investigated.…
In order to prepare water-oil repellent and fire retardant textile finishing agent,1H,1H,2H,2H-perfluorooctyl acrylate(FA) and acryloyloxy-1,3-bis(diethylphosphoramidate)propan(BisDEAEPN) were copolymerized with 2-hydroxyethyl acrylate(HEA) and stearyl methacrylate(SMA) by emulsion polymerization to form fluorinated p…
On the basis of preparation procedure of normal urea-formaldehyde (UF) resin, a UF resin-based formaldehyde scavenger was gotten. By 13C-NMR and GPC, molecular structure and molecular weight distribution of this formaldehyde catcher were characterized. The formaldehyde scavenger was mixed with a basic UF resin adhesiv…