Materials Literature
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Tb3+-doped Al2O3 films on silicon substrates were prepared by the sol-gel method.The Tb3+-doped Al2O3 films were characterized by differential thermal analysis/thermogravimetric analysis,X-ray diffraction,scanning electron microscope,atomic force microscope and photoluminescence spectra as well.The photoluminescence m…
In order to study the effect of intermolecular interaction between the hydrophilic headgroups and the hydrophobic one between hydrocarbon chains on the thermal behavior of amphiphile LB films,the phase behaviors of the LB films of octadecylamine and octadecylammonium octadecanoate were investigated by variable-tempera…
By adding the nucleating agents,the physical and mechanical performance of products acheieved the great of improving,for example,transparency,rigidity,resistance to impact,and so on.Nucleating agents for PP include inorganic,organic and polymer.The function,species and development overview at home and abroad of nuclea…
In order to research the decreasing problem of bearing capacity for structure members by chlorideinduced steel corrosion,the flexural performances of RC corroded beams strengthened with AFRP sheets under different ratio of corrosion(light-corroded:reinforcement mass loss is 2%,moderate-corroded: reinforcement mass los…
As the laser welding efficiency,quality and cost are superior to other welding methods,therefore,in the automotive industry has been widely used.Articles by the basic principles of laser welding,composition,characteristics,development trends in brief detailed description of the laser welding in car body manufacturing…
Objective To purify and renature the MarA protein of shigella flexneri 2a and study its biological activity.Methods His-tag MarA fusion protein was expressed in Escherichia coli as inclusion body with IPTG induction.Cells were then harvested,sonicated and centrifuged,and the inclusion bodies were isolated and purified…
The ITO film was prepared using In(NO_3)_3·4.5H_2O as the primary material and acetylacetone as the solvent,adding SnCl_4·5H_2O with the mol ratio In:Sn was 10∶1,using quartz glasses as the substrates.comparing with the existing techniques,the samples in this paper were annealed at(500 ℃) after each dip-coating, cycli…
ILSS,the bending property of BMI composites with different sizing on carbon fiber under different temperature and the failure mode of the sample in the bending proprety test are analyzed.The effect by the sizing on the mechanical behavior of CF/BMI composites is also analyzed.From these studies,it can be found that th…
Based on cavity expansion theory and modified fluid dynamics theory,the calculation method of depth of penetration on penetrating into semi-infinite metallic targets by spherical-nose steel projectiles is developed.According to the impacting velocity limit deduced by the limit of penetration,the calculation formula of…
Three novel ternary mixed complexes(1a~1c) were synthesized by the reaction of (AcO)2M[M=Mn(Ⅱ),Co(Ⅱ),Ni(Ⅱ)],imidazole and o-chlorobenzaldehyde salicylhydrazone Schiff base(HL) which was prepared by condensation of o-chlorobenzaldehyde and salicylhydrazone. The structures were characterized by IR,elemental analysis and…
The performance of a pressure swing adsorption (PSA) oxygen system with new tandem-type adsorbers was experimentally investigated. The effects of operating parameters,such as production duration,pressure equalization mode,product flow rate and adsorbents' properties,on the product purity and recovery of the new PSA ox…
The current investigation status of yttria stabilized zirconia(YSZ) thermal barrier coatings(TBCs) was briefly summarized.It is indicated that the traditional YSZ coating has the disadvantage of phase transformation during thermal cyclic and low ability of sintering resistance at high temperature.Because new type of r…
A new kind of flux-controllable permanent magnet synchronous machine (PMSM) with interior composite-rotor structure was proposed. Both NdFeB and AlNiCo permanent magnets are embedded in the rotor. It makes full use of the high remanent flux density, high coercive force of NdFeB, and the high remanent flux density, low…
A compound,called as N-ethyl-3,3-dimethyl-5-methoxy-spiroindoline-2,3'——naphthooxazine,is synthesized which contains naphthalene ring.The chemical structure is characterized with 1HNMR,IR and elementary analysis,and the photochromic properties are studied with UV and fluorescence spectrometers.The absorption spectrum…
The BaO doped 10NiO-NiFe2O4 composite ceramics were prepared with the cold isostatic pressing-sintering process,the effects of BaO content on the phase composition and electrical conductivity of 10NiO-NiFe2O4 composite ceramics were studied.The results show that the samples are mainly consisted of NiO and NiFe2O4 when…
ZnO particles were prepared by the molten salt method.Their growth mechanism and the influences of the preparation conditions on their crystal quality and optical properties were studied in detail.It was found that the ZnO particles prepared were single crystals with a hexagonal wurtzite structure.Their growth mechani…
A silicone surfactant D-529 for flexible PU foam is synthesized by the hydrosilation of silicone oil containing hydrogen and unsaturated polyether.The ether-capped Si-C surfactant(D-529) for flexible PU foam has been developed and studied.The results show that its structure and properties are similar to L-580.D-529 ha…
The paper is aimed to introduce development,production,standard,market and future development trend of attapulgite(palygorskite) clay products in Australia, trying to achieve understanding and use for reference for the countrymen.
In China and other countries,the up-and-down method recommended by IEC60507 is adopted as an artificial ice-coating experimental method in the research on flashover performance of ice-coated insulators,however the statistical characteristic of such a test method is not given and illustrated. Taking XP-160 insulator fo…
The formulations and the microstructure and wear resistance of SiO2-based ceramic coating prepared by thermal chemical reaction method were studied. The results show that the new substances are generated in both micron and 30% nano-SiO2 ceramic coating, when the mass ratio of aggregate and adhesive is 1∶1, curing at 6…