Materials Literature
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The liner polypropylene/organically-modified nano-montmorillonite(PP/nano-OMMT)composites were synthesized by means of melt intercalation in twin-screw extruder.By adding a mount of high melt strength polypropylene(HMS-PP)to PP/nano-OMMT composites,PP/HMS-PP/nano-OMMT composites foams were continuously foamed.Differen…
Multi-twist linnet yarn is made by use of different property raw material and special spinning and false-twist technology,including left twist,right twist and alternation twist etc.In this paper,basic performances of the multi-twist linnet yarn and pure flax yarn and its fabric are tested and analyzed with the result…
The nanofibers of polyvinylpyrrolidone/tetrabutyl titanate composites were prepared by using the electrospinning technique.Then,the pure TiO2 nanofibers were obtained by calcining at 500,600 and 700 ℃.The photocatalytic activity of the TiO2 nanofibers were studied by photocatalytic degradation of rhodamine B.The resul…
In this paper,conventional ethylene oligomerization processes to prepare 1-octene were summarized.both at home and abroad in recent years,ethylene tetramerization catalyst,the current department of the Cr catalyst for ethylene tetramerization was analyzed more sophisticated,the Cr-based catalyst(the main catalyst,liga…
The dimethyl ether steam reforming (DME SR) system, which is used to produce the hydrogen-rich gas for fuel cell feeding application, can be a promising fuel provider due to its property of being friendly to environment. The Pd-Ag-Au-Ni membrane is usually used in the DME SR system to separate and purify the hydrogen…
Anodic oxidation was adopted to prepare TiO2 nanotube arrays, which were prepared isobarically by the anodization of pure Ti in glycerol-based electrolyte containing NH4F and H2O at wide range of anodic voltage. The effect of anodic voltages, fluorine concentration, environmental temperature, the content of H2O and th…
In the present work,comparative experimental method has been employed to investigate the influence of regeneration temperature,regeneration time and the types and contents of activator on the properties of reclaimed epichlorohydrin(ECO) rubber prepared by the chemical dynamical desulfurization of copolymerized ECO.The…
The feasibility of the carbon fiber reinforcement technology with the continuum damage mechanics is discussesed.Concrete beams reinforced with carbon fiber are able to forecast the life of concrete structure.
Chitosan films were prepared by wet casting followed by natural withering (NW),vacuum drying (VD),and infrared drying (ID).Atomic force microscope (AFM) was used to study the effects of these three drying methods on the microstructural and micromechanical properties of the chitosan films.Results showed that VD and ID…
We report pulsed laser deposition synthesis and characterization of polycrystalline Fe1-xbCoxSi thin films on Si (111). X-ray diffraction, transmission electron, and atomic force microscopies reveal films to be dense, very smooth, and single phase with a cubic B20 crystal structure. Ferromagnetism with significant mag…
The effects of copper-microencapsulating and annealing on the electrochemical properties of La0.75Mg0.25Ni3.44Al0.06 hydrogen storage alloy electrode in different temperature has been systemically explored.It was indicated by experiments that copper-microencapsulating and annealing results in increasing cycling stabil…
The recent progress of increasing energy density of electrochemical capacitors(EC) was reviewed.The electrochemical performance of various EC with the different modified electrode materials and the emerging materials was presented in detail.The challenges which EC meets were pointed out,and the application prospects o…
The influence of thermal oxidative aging on dispersion stability of SBR latex was investigated.The results showed that,during the thermal aging,carboxylic acid which was produced in a oxidative decomposition reaction of nonionic surfactant caused the decrease of pH value,and then the reduction of pH value caused the d…
In order to study the galvanic corrosion of 7475 aluminum alloy,the galvanic corrosion of the 7475 aluminum alloy with TC18 titanium alloy is measured by means of current density of electric couples.The morphology and the depth of the corrosion surface are analyzed by a SEM and an optical microscope.The galvanic corro…
In plate rolling,width spread of each rolling pass has definite bearing on the width precision of the finishing products.Based on the conventional width spread model and technological characteristics of plate rolling process,a width spread coefficient computation model dedicated to multi-pass rolling process is derive…
Shielding effect and emission criterion of a screw dislocation near an interracial crisscross crack are dealt with in this paper. Utilizing the conformal mapping technique, the closed-form solutions are derived for complex potentials and stress fields due to a screw dislocation located near the interracial crisscross…
A series of polybenzobiso xazoles,including PBO,poly(1,4-naphthalene benzobisoxazole)(1,4-PNBO),poly(2,6-naphthalene benzobi soxazole)(2,6-PNBO),poly(2,5-thiophene benzobisoxazole)(PTBO) and poly-4,4′-(1,2-diphynylethylene benzobisoxazole)(4,4′-PDPEBO),were synthesized by polycondensation of 4,6-diamino-1,3-benzenedio…
A C/SiC/Si-SiC multilayer coating for protecting carbon/carbon(C/C) composites against oxidation was prepared by slurry and pack cementation.X-ray diffraction(XRD) and energy dispersive spectroscopy(EDS) analysis showed that the inner coating obtained from the slurry and pack cementation was a C/SiC gradient layer act…
NiMo supported catalysts were prepared using three composite supports, namely HY-Al2O3, TiO2-Al2O3, ZrO2-Al2O3. Effects of the support,the support composition and active metal loadings on the catalytic performance of the cata- lysts for diesel hydrodesulfurization were investigated. Characterization results of the cat…
The development status of the evenness instrument and the development of evenness testing expert systems were introduced.With the advances of computer technology,after decades of development,the yarn evenness instrument was getting mature.Based on Spectrum analysis,the mechanical,Capaitive and photoelectric test instr…