Research Status of Fe_3Al Intermetallic Compounds
The development course,properties,preparation,application and tendency of Fe3Al intermetallic compounds were reviewed.
Materials Literature
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Optimization of Microencapsulation Formulation of Jade Perch Oil and Its Effects on Fatty Acid Compositions
The microencapsulation formulation of refined oil from jade perch viscera was optimized to attain the maximum microencapsulation efficiency(MEE) by orthogonal array design,and the microstructure of microcapsules were observed under SEM and their fatty acid composition was analyzed by GC-MS.The optimum formula for micr…
The study of the self-assembly behavior of the polypeptides-chitosan composite system
Biocompatible amphiphilic polypeptide-chitosan was used to prepare nanoparticles by self-assembly and ion gel methods.The self-assembly behavior of the polypeptides-chitosan composite nanoparticles such as morphology,particle size,Zeta potential and critical micelle concentration(CMC) were studied by transmission elec…
Influence of pre-fatigue on tensile properties of 3D-C/SiC composites
The tensile tests were conducted at room temperature with a three-dimensional-woven C-fiber-SiC-matrix composite (3D-C/SiC) under 106 sinusoidal tension to tension constant amplitude loading at frequency of 20 Hz and 0.1 stress ratio at 1 300 ℃under 120 MPa,80 MPa,respectively. The tensile fracture morphologies of 3D-…
Displacement cooking technology with additives added
The effects of some cooking additives such as anthraquinone,sodium dodecyl benzene sulfonate and the water-soluble quinone additive CT-1 in two kinds of displacement cooking processes were studied.The results indicate that all of above additives have effects on both of the two displacement cooking processes,and the ef…
Synthesis and characterization of 5-substituted indolinospironaphthooxazine dyes
Three 5-substituted indolinospironaphthooxazine dyes was synthesized using phenylhydrazine,p-methyl phenylhydrazine hydrochloride,p-chlorophenylhydrazine hydrochloride,3-methyl-2-butanone,methyl iodide and 2,7-dihydroxynaphthalene as materials.The structure of three target compounds were characterized by elemental ana…
Knitted Fabric Stitching Inspection Using Window Segmentation Technology
In the textile and clothing industry,few have been designed for fabric manufacture.This paper mainly researched on the knitted fabric stitching inspection.It brought forward a method with a window segmentation technology to segment the seam images.The BP neural network was designed to conduct the classification work.T…
Experimental Analysis About the Hydraulic Rolling Machining of the Eccentric Sleeve for Large Straight Side Press
By using hydraulic rolling device, an experiment has been carried out on rolling machining the eccentric ex-circle surface of the large straight side press. The experimental result shows that the hydraulic rolling can not only reduce the surface roughness, but also reinforce the surface; furthermore, it also completel…
Mechanical Properties of Ti-50.8%Ni Alloy at Different Temperature
The mechanical properties of Ti-50.8%Ni shape memory alloy wire are investigated at different temperature from-50℃ to 110℃.The relationship of mechanical properties,residual-strain and yield-platform with temperature is described.The results show that at different temperature the material performs different mechanical…
Progress of catalysts for direct dehydrogenation of methanol to formaldehyde
In this paper,the development of the study on the catalysts for direct dehydrogenation of methanol to formaldehyde was described.Three classes of the catalysts:metals and metal-oxides,alkali salt,and molecular sieve based catalysts were introduced.The influences of different catalysts on the conversion of methanol and…
Influence of sodium dodecylbenzene sulfonate on hydrogen peroxide synthesis from fuel cell
Three kinds of oxygen electrodes were prepared by modifying carbon black materials with different mass concentrations of sodium dodecylbenzene sulfonate(SDBS) as surfactant.The electrocatalytic activity of the electrodes was investigated by using polarization curve test.The results show that oxygen reduction is increa…
Research of Metallization Process of Multilayer Co-fired AIN Ceramic
AlN ceramic is widely used in many fields because of its high thermal conduction,good insulation and innocuity.Multilayer co-fired AlN ceramic is a type of high performance ceramic that is printed in thick film to form multilayer circuit and fired in a certain atmosphere in high temperature.Metallization is a key proc…
Synthesis of Fluorinated Biphenol Ester Liquid Crystal Material
Fluorinated phenylboronic acid was synthesized from fluorinated bromobenzene by Grignard reaction under nitrogen at -10 ℃ and then coupling with p-bromophenol by PdCl2 to obtain fluorinated biphenol.Fluorinated biphenol ester liquid crystals were synthesized by esterification of fluorinated biphenol with alkyl benzoyl…
Preparation and Characterization of Proton Conducting Sulfonated Poly(phthalazinone ether nitrile ketone ketons)s
Sulfonated poly(phthalazinone ether nitrile ketone ketone)s copolymers(SPPENKKs) are synthesized in high molecular weight via direct polycondensation from SDFKK,DFKK,2,6-dicholobenzonitrile(DCBN) and DHPZ.FT-IR and 1H-NMR scattering are used to characterize the structures of SPPENKKs.TGA is used to study the thermal p…
Current research situation and development of manufacturing vacuum brazed diamond tools
Vacuum brazing technology is a new technique for making diamond products that developed in recent years.This paper summarizes the advantages of such technique,research and current situation on materials for vacuum brazing,relevant specialized equipments,technology and tools.It also draws the prospects on this techniqu…
The New Concept of Thermal Endurance of Electrical Insulation System and Insulating Material
Thermal endurance of electrical insulation has drawn great attention. Researchment has been carried out and concepts also have been updated. Some academic definitions as thermal endurance, thermal endurance index and the grades of thermal endurance have been changed. For some vague words ‘the limits of temperature’ an…
AN APPROACH TO MAGNETIC PARTICLE DETECTION TECHNOLOGY USED FOR ANGLE WELD JOINT ON SMALL SIZE TUBE SOCKET BASED ON YOKE MAGNETIZATION METHOD
As an effective non-destructive detection method,the magnetic particle detection is widely used for ferromagnetic parts and components in power plants to detect defects on their surface or near the surface,but in magnetic particle detection of angle weld joints on small size tube sockets,the probability of discovered…
Electrical Properties of a Single Microcoiled Carbon Fiber
Regular microcoiled carbon fibers with a double helix structure have been synthesized by the catalytic pyrolysis of acetylene at 750～790 ℃ by the use of Ni powder as a catalyst and thiophene as a promotor. The resistance measurements by a standard four-probe technique and I-V curves of a single microcoiled fiber are p…
Study on CO selective oxidation over Ru-La-O/γ-Al_2O_3 and regeneration of catalyst in hydrogen-rich gas
Ru-La-O/γ-Al2O3 composite oxide catalysts with various La2O3 contents were prepared by two-step impregnation method,and the selective oxidation of CO in the hydrogen-rich gas over the prepared catalysts was studied in a fixedbed micro-reactor.The catalysts were characterized by means of TPR and XRD,and the effect of L…
Recent developments of epoxy resin systems containing silicon
In this paper,the mechanism of flame retardant epoxy resin systems containing silicon was simply discussed.The epoxy resin system containing silicon and curing agent system containing silicon were discussed thoroughly,and flame retardant properties of its cured compounds were demonstrated elaborately.The synergistic e…