Materials Literature
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The X-ray diffraction(XRD) has been used to analyze phase composition of magnesite clinker from calcinated brucite with different process conditions.The major phase of raw brucite powder is Mg(OH)2 with content up to 85.9% and major impurities are Mg3Si2(OH)4O5,CaCO3 and CaMg(CO3)2.Most of Mg(OH)2 are decomposed into…
The molybdenum disulfide nano-materials exhibited a layered structure,higher surface area,stable cycling performance,extraordinary applications were found in lubrication,catalysis,anode material,and so on.The current advances in preparation of MoS2 with different morphologies were reviewed.The preparation methods and…
In this paper, the ternary blend damping materials with MJLCP and IPN polyacrylate were prepared by situ composite through dispersing PBPCS into polyacrylate core-shell structure. MJLCP was wrapped in IPN polyacrylate according to IR and TEM experiments, however the adding PBPCS affected the normal morphology of core-…
Through reviewing previous studies on eco-environmental compensation and eco-environmental compensation mechanism,this paper concludes that eco-environmental compensation in coal mining area is a general term for activities of compensating and rehabilitating the broken eco-environment because of coal resource exploita…
The some performances(such as water resistance,mechanical properties,bonding strength,thermal stability and other performances) of waterborne polyurethane(WPU) adhesives are usually lower than those of solvent types adhesives,so it's necessary to modify WPU.The modified methods of WPU adhesives,including changing poly…
2-benzoyl-Benzoic acid was prepared from phthalic anhydride and different substituted benzene through Friedel-Crafts reaction,which reacted with various amine compounds to afford Benzophenone acylamide derivatives in total yields of 71.2%~91.7%.The induction of acylamide group can enhance the stereoselectivity of phot…
Copper alloy wires with silver coating were prepared by chemical liquid plating.In this study,the effect of coating composition,main salt concentration and reaction time on the property of suspension wire were investigated.It was found that the resistivity of suspension wire firstly decreases and thereafter increases…
How to reduce the harmness of the crystallization of calcium sulfate in hydrometallurgy process is still a world-wide difficult task up to now.In the past decades,extensive investigations have been done on hydrometallurgists in order to avoid the scale formation of calcium sulfate and its hydrates on the wall of react…
Aim To study the influence of nano-diamond cathode electeophoretic processes on the proportion and the stability of field emission current and light.Methods Observe the surface and structure of the coating by using metaloscope,microscopy,scanning electron microscopy(SEM),X-ray diffraction(XRD) and Raman spectroscopy.T…
The development process of non-deslagging molten aluminum distributor was introduced in the paper.The principle of slag formed in the ingot is discussed.The molten aluminum distributor was reformed by aid of the principle and it was successful finally.
Four random poly(ether ether ketone ketone) copolymers (PEEKK-X /PEEKK-A)s were prepared via nucleophilic aromatic substitution polycondensation of 9,9-bis(4-hydroxyphenyl) xanthene ( BHPX),1,4- bis(4-fluorobenzoyl) benzene and bisphenol A ( BPA ).The PEEKK-X /PEEKK-A copolymers were characterized by FTIR,DSC,TGA and…
To overcome the demerits of currently used techniques of producing porous metals,a novel electrolyte jet electrodeposition method was presented.The related techniques of producing porous metal nickel by using jet electrodeposition were introduced,preparation of the porous metal nickel samples with different porosities…
In this paper,the application of EBG based ultra-thin radar absorbing material(RAM)to the reduction of the backward RCS of helical antenna array is investigated.This RAM is realized by loading lumped resistors between the patches of EBG,and the ground plane of the helical antenna array is replaced by EBG RAM to reduce…
Research progress in hyhdrogels with cyclodextrin moieties is reviewed.The results indicate that introduction of cyclodextrins into hydrogels can remarkably improves their properties,such as response rate to change in environmental conditions,the drug loading capacity and drug release behavior.
The diffraction screen of a two-dimensional rectangular grating is analyzed and calculated using one-dimensional grating superposition and Fourier transformation.The analytic solution and numerical simulation of the diffraction field are given.The hexangular aperture with three differently oriented gratings is treated…
The modeling and simulation of semi-batch external loop spray ethoxylation reactor was studied.By analyzing the characteristics of the reactor,a mathematical model and numerical algorithm were developed to describe the behavior of the reactor.The model took the vapor-liquid transfer,kinetics,vapor-liquid equilibrium,v…
A sort of 4-(1-pyrenny1)-butyl alkyl ester was synthesized by the esterification. The structures were characterized by infrared spectrum (IR) and 1H nuclear magnetic resonance spectrum(1H-NMR),and the heat stability was compared of these luminophors in normal and in high temperature. The results show that the long cha…
Poly oligo(ethylene glycol) methacrylate-block-polystyrene (POEGMA-b-PS) brushes were prepared via surface-initiated consecutive atom-transfer radical polymerization on initiator-immobilized silicon.The block length of the two blocks was modulated by adjusting reaction time.The characterization results indicated that…
Co1-xZnxFe2O4 ferrite aerogels are prepared via ethanol-water heating and supercritical fluid drying(SCFD).The samples are tested by XRD,BET,VSM,ICP and TEM.The results indicate that as-synthesized spinel ferrite aerogels have high saturation magnetization,coercivity and specific surface area,and the properties of CoZ…
High quality zinc blende CdSe nanocrystals were successfully synthesized using an environmental friendly method.Pre-synthesized cadmium decanoate was used as the Cd precursor and selenium powder dissolved in octadecene was used as the Se precursor.The use of expensive and toxic tributylphosphine or trioctylphosphine w…