Materials Literature
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Automatic temperature control systems which included adjusting circle systems for vapor pressure and cocoon brusing were designed to solve such problems as temperature fluctuation which is hard to control when cocoon brushing and quality instability of silk.Through tests,we can automatically control the temperature wh…
A metallurgical model concerning the co-effect of the Nb solute drag and the complex carbonitride precipitates pinning is proposed to predict the recrystallization austenite grain growth of low carbon Nb-containing microalloyed steels.The analysis,both predicted and experimental,reveals the precipitate pinning plays a…
A series of SPEEK/PES blend membrane with different PES content were prepared by blending modification of SPEEK and PES with the casting method and characterized by many methods.These key parameters were firstly obtained and reported,such as the ion exchange capacity(IEC),water uptake,proton conductivity of the membra…
Ionic liquids(ILs)have attracted increasing interests for SO2 capture due to their unique physico-chemical properties.In this paper the characteristics and advantages of ILs over traditional absorbents are introduced.The recent progress of ionic liquids for SO2 removal,including the solubility of SO2 in guanidinium-ba…
A new series of poly(bisbenzothiazole)s(PBTs Ⅲ1,2) containing 4-tert-butylcyclohexylidene and alkene units were prepared from 1,1-bis(4-amino-3-mercaptophenyl)-4-tert-butylcyclohexane dihydrochloride(BAMPBCH\52HCl) and alkene dicarboxylic acids by direct polycondensation.Their chemical structures were characterized by…
Recycling economy,the best way to achieve sustainable development and harmony between man and nature,is a new mode of socio-economic development.Viewed from the practical experiences of developed countries,the development model of recycling economy can only be achieved with the guarantee of a complete legal system.Amo…
Grade transition is quite common in the polymerization process due to diversified market demands.Optimal grade transition could minimize the amount of off-specification polymer and transition time while meeting operational and safety requirements.Numerical optimization based on the nominal model is typically insuffici…
The technical characteristics of argon tungsten arc welding for AZ31B magnesium alloy plates with 2 mm thickness were discussed.The microstructure,phase composition,mechanical properties and fracture morphology of welding joints were investigated using metalloscope,X-ray diffractometer,universal tensile testing machin…
The meloxicam/PLA(polylactic acid) microspheres are prepared by the solvent evaporation method,choosing the methylene chloride as a good solvent and the polyvinyl alcohol(PVA)as a dispersed agent,and the biodegradable material-polylactic acid(PLA) as a drug carrier.The morphology of microspheres are analyzed through b…
Nano-particles of ZnO,Si3N4,Fe3O4,ZrC and SiO2 were dispersed in the solution of Tween 80 at first,and then were added to the copper plating solutions,respectively.The Cu-ZnO,-Si3N4,-Fe3O4,-ZrC and-SiO2 plating on PET fabrics were prepared in the laboratory.The plated fabrics were investigated by means of SEM,EDS,XRD…
A new synthesis strategy for fluorescent silver nanoclusters was developed.During this synthesis process,without any other reductants,only facile biomaterials,i.e.,eggwhite proteins,were used as materials and scaffolds for preparation of silver nanoclusters.By simple incubation process under the optimum conditions,thi…
The influences of 1,10-phenanthroline on the deposit rate,structure,morphology and surface resistance are investigated.It is found that adding an optimum amount of Phenanthroline to the plating solution will not only increase significantly the deposition rate of the copper deposits,but also decrease markedly the surfa…
Taking an asynchronous traction motor used for high-speed EMU for example,this paper builds up the mathematical model and physical model for motor field-circuit coupling.Electromagnetic of motor is calculated by using the numerical analysis method of time-stepping finite element,and the main electromagnetic performanc…
In this paper,the MCNP code is used to calculate neutron transmission through various materials of 1–40 cm thickness in energy range of 0.025 eV to 20 MeV.The materials are principal shielding materials of PE,water,concrete,Fe,Cu,Pb and PE/BC4composite,and the additives of B4C and Gd2O3.The following results were obta…
Objective The purpose of this study was to assess the effects of differently synthesized diamonds on the flexural strength of dental resins.Methods Three groups resins were prepared in the same modify and compound process respectively with uniform quantity of detonation nanodiamond(DND),still pressure diamond(SPD), an…
The research on diagnosis of XLPE power cable insulation is of a great importance for realizing the cable insulation aging status and ensuring the power transmission system in safe and reliable operation.Therefore,we put forward a new method,using electromagnetic wave propagation velocity in an XLPE cable as the crite…
The blowing behavior of expandable microspheres(Expancel)in LDPE compounds was investigated in this paper.The morphology and thermal properties of Expancel were characterized.And then,Expancel were mixed into LDPE compound.The effect of blowing temperature,cross-linking degree and Expancel content on the blowing prope…
Influence of holding time and tempering time in the direct inter-critical quenching and tempering(DLT) process on microstructure and properties of 9Ni steel was investigated.The results show that under the same tempering conditions,the highest cryogenic toughness is obtained when holding time in inter-critical region…
In order to study the slag resistance of bricks with different matrix,corrosion testing for the crucible samples with three different formulations were made choosing slag A.The microscopic structure of them were observed by scanning electron microscope,energy disperse spectroscopy and X-ray diffraction.The results wer…
In order to improve the electrochemical cycle stability of La-Mg-Ni system(A2B7-type) hydrogen storage alloy,the Si is slightly added in the alloy,La0.75Mg0.25Ni3.3Co0.2Six(x=0,0.05,0.1,0.15,0.2) hydrogen storage alloys were prepared by casting.The electrochemical performances and microstructures of the alloys were de…