Materials Literature
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In order to obtain the dynamic mechanical properties of polycarbonate(PC)material in ambient temperatures,high strain rate dynamic compressive mechanics experiments of PC are done using split Hopkinson pressure bar(SHPB)technique at three different ambient temperatures:-50 ℃、+15 ℃ and +50 ℃.The availability of the dat…
Using the empirical Brenner potential,the force constant matrix and vibrational modes of(10,10) single-walled carbon nanotubes(SWCNTs) with monovacancy were calculated,based upon which their nonresonant Raman spectra were calculated by the empirical bond polarizability model.It was found that the monovacancy-induced R…
A series of Gd3+xAl2-x(x=0,0.1,0.2,0.3) alloys were prepared in a high-frequency floating furnace.The effects of minor substitution of Al by Gd on the microstructure and magnetic entropy of Gd3Al2 alloy were investigated.The results show that the microstructure of Gd3+xAl2-x alloys is the same with Gd3Al2 alloy.The cu…
Super high strength steel 30CrMnSiNi2A and TC18 Ti alloy were surface-modified by different methods.The contact corrosion behavior and corrosion sensitivity of the surface-modified and unmodified super high strength steels coupled with surface-modified and unmodified Ti alloys as well as the surface protective effecti…
The researches on polyhydroxyalkanoates(PHAs) microbiological synthesis from food wastes were summarized and analyzed.The structure and properties of polyhydroxyalkanoates,microorganisms of PHAs synthesis and PHAs microbiological synthesis using food wastes were discribed in this paper.The prospects of future research…
In order to understand the characteristics of protein expression and regulation in pupae of Bombus hypocrite queens and the molecular mechanism of their development, we investigated the proteome of pupae in different developmental stages using two-dimensional gel electrophoresis. The results show that 81, 80 and 75 pr…
Tung oil was used as raw material to synthesize eleostearic acid.As-synthesized eleostearic acid was allowed to react with diethylenetriamine,and relevant synthesized product was finally allowed to react with methyl methacrylate to yield eleostearic acid imidazoline derivative.The molecular structure of the synthesize…
The aggregated the raw CNTs were dispersed by the ultrasonic dispersion method,then the surface modification of the dispersed CNTs were disposed by acidification,sensitization and activation.Ni coated layers were deposited on the surface of the CNTs by electroless plating and a heat treatment was endured for them.The…
The seam strength of ultravioresistant polyester-cotton plain weave fabric,common polyester twill and polyester-cotton plain weave fabric were tested by using the orthogonal analysis experiment for studying the effect upon the seam strength of the ultravioresistant fabric which was presesed by the ultraviolet screener…
Al2O3/YAG eutectic in situ composite ceramics were prepared by double side laser zone remelting(DSLZR) with aiming at investigating the melting and solidification rules of oxide eutectic ceramics with large size under DSLZR condition.The solidification microstructures were characterized by SEM,XRD and EDS.The results…
The first-principles density functional theory(DFT) and the periodic slab model are used to investigate the adsorption of methanol on Ir(111) surface.The adsorption energies,structures,vibrational frequencies and density of states are calculated.The results show that the favorite adsorption occurs at the top site.The…
Preudo-boehmite was prepared from Al2(SO4)3 18H2O and NH4 HCO3,then γ-Al2O3was gained by the calcination,and Pt-Sn-K/γ-Al2O3 catalyst was prepared by impregnation and temperature-programmed reduction with γ-Al2O3 as support.XRD,mercury porosimetry and BET were used in characterization of both γ-Al2O3 and Pt-Sn-K/γ-Al2…
In order to solve the serious corrosion problems and significant security risks of the desulfurization wet chimneys in Shanxi province plant power,many anti-corrosion programs were fully investigated and experimented.Ultimately,hybrid polymeric material as a new anti-corrosion technology was selected.In this paper,we…
It synthesised the schiff base lanthanide complexes {[M(NO3)2]·2H2O;M=La,Nd,Sm} by N,N′-bis(salicylaldehyde-o-phenylenediamine)(L) ligand with rare earth metal salts.The corresponding complexes were charactered with infrared spectroscopy(IR),UV-visible spectroscopy(UV),thermal weight(TG/DTA) and molar conductivity.The…
The dynamic recrystallization(DRX) and austenite grain size of low carbon high niobium steel after recrystallization under different deformation condition was studied by Gleeble-3800 thermo-mechanical test system.The results show that the low carbon high niobium steel is easy to promote the DRX behavior at higher defo…
Choosing two kinds of inorganic nucleating agent nano-silicon dioxide(nano-SiO2)and organic montmorillonite(OMMT)with different topologies structure,their effects on cell morphology and structure of foam products prepared by PVC coating was studied.Cell morphology can be observed by using SEM,and cell diameter,foaming…
This paper systematically introduces several anti-pollution flashover technology currently widely used in electric power industry,and describes its principle and performance,which not only provides reliable counter measures for external insulating anti-pollution flashover work of electric transformer and distribution…
The synthesis of polyether modified polysiloxane was studied and the best choice of technology was discussed.The synthesis of polyether modified polysiloxane materials during the synthesis ratio,catalyst amount,reaction time and temperature on the synthesis of polyether polysiloxane low conversion rate of hydrogen sil…
Hexabromocyclododecane was synthesized by electrophilic addition reaction of cyclododecatriene with bromine in the mixed solvents of propanol,isopropanol and chloroform.The effects of process conditions on reaction were studied.It showed that the optimum conditions were as follows: m(propanol):m(isopropanol):m(chlorof…
Hydrogen storage alloy composite TiV1.1Mn0.9Ni0.5+20%ZrCr2 was prepared via two-step arc melting method.Microstructure,cycle stability and synergetic effect of the hydrogen storage alloy composite electrode were studied by XRD,energy dispersive spectroscopy(EDS),inductively coupled plasma-optical emission spectrometry…