Materials Literature
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A kind of environmentally acceptable water-based anti-rust agent containing silicate as the major component was prepared by complexing with various anti-rust auxiliaries.The performance of resultant rust inhibitor was evaluated based on observation of appearance,immersion test in NaCl solution,humid test,measurement o…
Calcium aluminate glass is a good candidate of infrared material.However,the residual OH-in calcium aluminate glass and the poor glass-forming ability of calcium aluminate glass restrict its application.The infrared property and crystallization kinetics of calcium aluminate glass were studied.The results showed that t…
In this work,the enzymatic hydrolysis of squid ink was investigated to prepare natural melanin.Squid ink was hydrolyzed by papain,neutral protease,acidic protease,pepsin and tyrpsin,respectively,and pepsin was found to have the strongest ability to hydrolyze squid ink.Based on one-factor-at-a-time experiments,an L9(34…
The dissimilar steel of pearlitic steel(Q235)and austenite steel(1Cr17Mn6Ni5N) was welded by plasma arc welding.The microstructure of welded joint was observed by optical microscopy and scanning electron microscopy,the microhardness of welded joints was measured.The results indicate that the plank martensite hardening…
The research development on natural rubber(NR) nano-composite materials prepared by natural rubber with nano-SiO2,nano-organophilic montmorillonite,nano-CaCO3,nano-ZnO and carbon nano-tubes was reviewed.Adding nano-filler to NR improved properties and had new characteristics of nano-composite materials.
A novel method was developed for the synthesis of thioglycolic acid-capped CdTe quantum dots(QDs)in aqueous medium when tellurium dioxide worked as tellurium source and sodium borohydride acted as reductant.The influence of experimental conditions,including refluxing time,pH value,molar ratio of tellurium to cadmium a…
Some kinds of phosphors were synthesized with Eu/Dy coating ZnO nanocrystals by co-precipitation approach derived from Zn(AC)2·2H2O,NaOH as precursors.The crystal structure and size were characterized by the X-ray diffraction.Photoluminescence(PL) measurements show an intense red luminescence at 612 nm caused by trans…
This paper described the importance of rare earth permanent magnet and introduced its applications and production equipment and technology.
Aimed at normal and oblique penetration into semi-infinite concrete/limestone targets by a high-speed projectile,an axis drag force was employed to reflect the continuous variation of the nose shape.With considering the transverse load in the cases of asymmetrical mass abrasion and oblique penetration,a method was pro…
Flame retardancy of new phosphorus-nitrogen flame retardant(OP)based on aluminum dialkylphosphinate for nylon 6 was studied.The results showed that the flame retardant had good flame retardancy for nylon 6.When the loading of OP was 25 wt%,the LOI of the nylon 6/OP composite was more than 30 and the flame retarding cl…
This article gave the considerations of the TEOM RP1400a PM10 based on the operation principles,analyzed the conditions of negative value apperance,abnormal flow-rate,obvious non-continuous undulation on the monitor,abnormal display,etc.and proposed the corresponding solutions.
【Objective】 To investigate the effects of acute hypoxia on the electrophysiological properties of VSMCs in guinea-pig spiral modiolar artery.【Methods】 Whole-cell patch clamp recordings were performed to study the effects of acute hypoxia on the whole-cell membrane current,resting membrane potential(RP),membrane input…
Non-equilibrium molecular dynamics(NEMD) method and Tersoff potential energy function were used to simulate the vacancy structural defects effects on the lattice thermal conductivities of silicon thin films.The results of calculations demonstrated that the thermal conductivities of Si thin films decreased rapidly with…
Lotus seed pod procyanidins(LSPCs) were extracted with 70% aqueous ethanol solution and purified by AB-8 macroporous resin adsorption,and their stability and thermal degradation kinetics were investigated.LSPCs were found to be very stable under low temperature,light-avoiding and weakly acidic conditions.NaCl,sucrose…
The cellulose may dissolve in the NaOH/urea/thiourea compound resolver system.This experiment used the orthogonal experiment's method study the NaOH/urea/thiourea density the influence which dissolved to the cellulose,and the influence of each kind of dissolved condition to the dissolves effect.XRD,FT-IR are used to a…
To research the influences of various reasons on the alternating current(AC) pollution flashover voltage of hydrophilic insulator,calculation formulas for residual pollution layer resistance in consideration of arc root radius or neglecting of arc root radius were used,and the Obenaus model was used to calculate the p…
Thermally stimulated depolarization current(TSDC)was used to determine charge transportation and trap levels in dielectric.To investigate and improve TSDC measuring system,the TSDCs of polyester(PET) film cooperating with two types of electrodes,as well as temperature gradient in both types of electrodes,were measured…
Compositions and functional characteristics of peanut protein,film-forming mechanism of peanut protein and major properties including tensile strength,elongation rate during breaking,and water vapor permeability of peanut protein film have been reviewed in this paper.Meanwhile,the physical and chemical factors affecti…
Alumina leafy cluster with hierarchical structure in the form of nanoflakes ended in a bundle was obtained by solvothermal approach using Al(NO3)3·9H2O and CO(NH2)2 as main raw materials,ethanol-water mixture as solvent.The resulting materials were characterized by SEM,XRD,FTIR and N2 adsorption-desorption isothermal…
Nano-cadmium sulfide photocatalysts were synthesized by a solvothermal process in ethanol.Ethylenediamine(EDA),cadmium sulfate and thioacetamide were used as a complexing agent,cadmium source and sulfur source,respectively.The effects of amount of the complexing agent,the reaction temperature and the amount of deposit…