Materials Literature
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A systematically theoretical research on Cu+—exchanged zeolite catalyst(Cu—ZSM—5) was performed. First of all, a whole geometric configuration includes integrated straight and sinusoidal channel of ZSM—5 model was building. Then a thorough examination was made of the effects of placing Cu+ in each of potential cation-…
Effect of aluminum on microstructure and mechanical properties of Cr8WMo2V2SiNb steel was investigated by metallographic examination and SEM.The results show that aluminum can refine as-cast microstructure,carbides and grain size.Aluminum also can increase critical point while improving the appearance of ferrite in qu…
Objective A novel strategy for unltra-sensitive detection of proteins based on both the multifunctional gold nanoparticle(Au NP) probes and the magnetic bead(MMP) was developed.Methods the multifunctional Au NP probes were labeled with both two kinds of proteins and thiol-terminated oligonucleotides strand:detection a…
The titanium-containing apatite coating(TCAC) with honeycomb-like structure was fabricated on single crystal silicon by a hybrid sol-gel approach including preparation of hybrid sol containing calcium,phosphorous and titanium,immersion and spin of specimens in hybrid sol,desiccation of hybrid sol,and calcination of hy…
Nano-sheet carbon films(NSCFs) were fabricated on Si wafer chips by means of quartz-tube-type microwave plasma chemical vapour deposition(MWPCVD).In order to further improve the field emission(FE) current density,a 2-nm Ti film was prepared on the samples by using electron beam(EB) evaporation.The FE characteristics o…
Projectile is a major component of artillery.Through research on projectile grain the smooth surface and ignited surface treatment mechanical system.Processing method of projectile grain is improved.Introduced the processing methods of the works of research on the surface of projectile grain treatment mechanical syste…
A kind of porous scaffolds of calcium alginate for tissue engineering, which can be assembled in nerve conduits, was made by the method of casting/freeze-drying. Through IR, SEM, the equilibrium swelling ratio of the porous scaffolds of sodium alginate in cross linkers of different consistencies, the mechanical proper…
Based on the aging mechanism and the detailed reaction mechanism of three-way catalytic converter(TWC),a kinetic model of TWC,including aging process,was established.In combination with CFD software,an aging characteristic model of two-dimension single-channel of TWC was established according to fast aging bench test…
[Objective]The aim was to provide the theoretical basis for the application of chitosan and chitoan-Cu in agriculture.[Method] The antifungal activity of chitosan and chitosan-Cu against six plant pathogenic fungus was investigated by the growth rate method,and the regression equation was established and EC50 was calc…
Phosphorylation sodium alginate(PSA)membrane was synthesized by phosphorus pentaoxide,triethyl phosphate and phosphoric acid,then modified by ferrocene as a linking reagent;Chitosan(CS)was modified by acetyl ferrocene.PSA-Ferrocene/CS-acetylferrocene bipolar membrane(mSA/mCS BPM)was prepared by a paste method,named as…
The effect of matrix molecular weight and dispersed phase content on morphology of polypropylene(PP)/poly(ethylene-octyl olfin) elastomer(POE)blends were studied by gel permeation chromatograph(GPC),scanning electron microscope(SEM)and by torque rheo-meter. The results show that dispersed phase particle size and size…
The embedded atom method (EAM) potential is important for the computer simulations of physical properties of metals.We present an EAM potential with simple form for the fcc metals Ni,Al and their alloys.The lattice constant,the cohesive energy,the vacancy formation energy and three elastic constants (C_(11),C_(12),C_(…
In order to correctly adjust reduction of top rolls system of 5 rolls flattener that was being used for solving the problems to flatten strip.Combined with the adjusting characteristics of double eccentricity flattener,the effect of the angle of 2 eccentricity shafts on reduction was analyzed by analytical method.The…
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…