Materials Literature
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Aimed at the problems of the deformation,cracks and fatigue damage of crystal wheel in poor working conditions,and resulting in unqualified casting ingot in continuous casting and rolling production of electrician aluminum rod,based on the experimental data,the thermal-stress field of the crystal wheel was simulated b…
Li doped NiO samples were prepared by sol-gel method.The effects of Li doping on the thermal electric properties of NiO were investigated in detail.The results show that no impurity phase exists in the substitution of Li at Ni site.The electrical conductivity and Seebeck coefficient of Ni1-xLixO samples were measured…
The compound Zr-Al-Ti multi-metal tanning solution was modified by various small molecular organic acidity ligands and trace amount of chromium ligands. when n(metallic ion)∶n(lactic acid)∶n(citric acid)=1∶0.1∶0.1 and n(metallic ion)∶n(chromium metal)=1∶0.05, the stability and reactivity of tanning liquor modified is…
A ceramic material of Ti3AlC2 was sintered with Ti,Al and C powders as raw materials by a reaction sintering technology.Effect of process parameters on the physical properties of the ceramic material was investigated.The friction and wear behavior of the prepared material was analyzed.The results demonstrate that Ti3A…
In order to investigate the distribution of carboxylic group in emulsion polymerizations which use carboxylic monomers as main functional monomers,according to the fact that carboxylic group in different existing forms(including carboxylic group on the surface of particle,embedded in particle and in aqueous phase) has…
Along with the development of sciences, the polymer materials are widely applied in daily life, and the flame retarding technology and the application of flame retardant has attracted much more attentions. The flame retardant is a kind of special auxiliary chemical which is used for modifying the combustibility of the…
The main advances in HC-trap technology till now are reviewed.The emphases are put on the hydrocarbon constitute in the cold start exhaust,the choice of zeolite adsorbents for dutrex such as toluene,the influence of pore and surface structure on toluene adsorption performance.Finally,the developing tendency for HC-tra…
Antioxidation activity of resveratrol on oil was studied using Schaal oven-storage method by testing peroxide value(POV).The results showed that resveratrol possessed good antioxidant effects on oil.The antioxidation effect was dose-dependent within 0.01%~0.06% additive amount of the resveratrol.Resveratrol added with…
Based on the multigroup calculation feature of the MCNP code,the multigroup function is extended.The coupled code is used to calculate the burnup with the lattice homogenous code WIMS.The 69-group resonance and self-shield macroscopic neutron cross-section,is generated by the WIMS code to simulate the fuel cell and th…
Complex [Sr2(pdc)2(H2O)7]·H2O(1, H2 pdc=2,3-pyrazinedicarboxylic acid) has been synthesized and characterized by single-crystal X-ray diffraction studies and FT-IR. Structural determination reveals that there are two crystallographically independent strontium ions in 1. The coordination geometry of Sr(1) is a nine-coo…
The thermal stress and vibration characteristic of original structure of gasoline engine manifold catalytic converter are calculated with the fluid-structure thermal simulation.The heat transfer boundary conditions,such as the temperature of fluid boundaries and stress distribution,are calculated.Then,the thermal stre…
The influences of annealing and pre-deformation on the precipitation behavior in AA1235 alloy sheet were investigated by XRD,TEM,optical microscopy and tensile test.The solid solubility of Fe and Si in the experiment alloy was analyzed by X-ray method,the TTP curve in the temperature range from 325 ℃ to 400 ℃ was obta…
PCL-b-PEG with different composition and functional groups were used to prepare microspheres with different surface properties by means of the double emulsion solvent evaporation method.Then,the biomineralization of microspheres was performed in the 1.5 simulated body fluid(1.5SBF).The effects of the hydrophilicity,ro…
This article studies on extraction methods of polysaccharides form sea cucumber capsules: enzymatic and ultrasonic extraction method;hydrogen perocide,active carbon decolorization method;the effect of potassium acetate and trichloroacetic acid deproteinization to the yield of sea cucumber polysaccharide.The article al…
The effect of CPE content,monomer ratio,swelling temperature and reaction time on grafting rate,molecular weight,tensile property and microcosmic structure of ACS resin was investigated in detail.The research results showed that when CPE content was 30%,monomer ratio(St/AN)was 2∶1 by weight,swelling temperature was 40…
MoP/TiO2-SiO2-Al2O3 catalysts with different TiO2 contents were prepared by insitu sol-gel method.On a model compound of quinoline,hydrodenitrogenation(HDN)activity of the catalysts was tested in a fixed bed reactor.The results show that the optimum conditions of the in situ reduction are as follows:H2flow rate is 60…
The two kinds of coating made from quartz powder and high-alumina bauxite respectively were applied to pouring the castings under the same conditions for researching the impermeability and stripping of the coatings.Microstructures of coating section and the phases of coating on the casting were observed and analyzed b…
In order to overcome the numerical divergence of the conventional finite-difference time-domain(FDTD) that has been widely applied to dispersive media,an efficient dispersive FDTD method based on Drude model is presented and the difference formula of dispersive FDTD is deduced in this paper.The method is demonstrated…
Nano-HZSM-5/polyacrylic acid sodium salt(PAAS)/KOH/polyvinyl alcohol(PVA) electrolyte with high conductivity was prepared by adding PAAS as plasticizer,nano molecular sieve HZSM-5 and KOH into PVA matrix.XRD,SEM and electrochemical performance tests were taken.The ionic conductivity of alkaline polymer electrolyte cou…
The InP quantum dots(QDs) were synthesized via a colloidal chemical method with white phosphorus(P4),indium acetate(In(Ac)3),stearic acid and 1-octadecene(ODE) as phosphorus source,indium source,surfactant and solvent,respectively.The structure,size and shape of the quantum dots were analyzed by XRD and TEM.The result…