Materials Literature
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The adsorption kinetics of bamboo charcoal and carbon nanotubes(CNT)for bisphenol A(BPA) and 4-nitroaniline(4NN) from aqueous solution was studied.The results show that the equilibrium adsorbing capacity(qe) of BPA and 4NN increases with the increase of initial concentration or temperature.On the same condition,the or…
The preparation methods and progress in development of SBS nanocomposites were reviewed in this paper. The studies on intercalation to prepare SBS nanocomposites were introduced in detail, and the application of SBS and SBS nanocomposites were also summarized.
The composites gained from the thermoplastic elastomer of the styrene-butadiene-styrene block copolymer(SBS) by filling the polypropylene(PP) were mainly discussed.The first step was to prepare the composites of different content of the thermoplastic elastomer SBS.The next step was to test the physical and chemical pr…
Li2CO3-doped ZnO varistor ceramics were prepared using oxide solid phase synthesis method. The effects of dopant amount on the electrical properties and energy band of ZnO varistor ceramics were studied. The results show that the voltage gradient of ZnO varistor ceramics increases from 529 V/mm to 2 170 V/mm with incr…
Based on the Fresnel diffraction integral and the complex Gaussian expansion for the hard-edge aperture function,a simple and analytical expression for calculating the diffraction field distribution of an apertured lens is presented.This analytical expression can overcome the difficulty in computing the diffraction in…
The recent progress of chiral Brnsted acid catalysts derived from BINOL was generally reviewed,including the structure changing on catalysts and substrates.The factors on effect of enantiomeric excess were introduced.
The oxidation of Si3N4-SiC materials containing different Si3N4 content at different temperatures was studied.Through analysis of the oxidation weight gain after oxidation,it is found that the higher content of Si3N4 and the higher temperature,the more complete the oxidation occurs,furthermore the oxidation weight gai…
Superconducting properties of YBCO thin films can be greatly improved by incorporating a small amount of BaZrO3.In this work,the influences of the different substrate temperatures on the epitaxial growth characteristics and superconducting properties of YBCO thin films are investigated.The solid-state reaction method…
A novel polymer containing ketal-protected group,poly(N-dodecylmethacrylamide-co-1,4-dioxaspiro nonane-2-methyl methacrylate) p(DDMA-DNMMA),was synthesized and prepared in LB film.The photolithography and photoreaction of the polymer were investigated by atomic force microscopy(AFM),UV-vis,FTIR,GPC and quartz crystal…
Mechanical properties of nano-composite ceramics,such as strength and toughness are superior to that of traditional ceramics,nano-compositing has become an effective way to improve the mechanical properties of traditional ceramics.Toughening and strengthening mechanisms of nano-composite ceramics were introduced,the m…
By the liquid chromatogram instrument Agilent 1100,the amino acid contents of spun silks produced by Silkworm,Cassava and Tussah were respectively investigated.The results showed that the amino acid content of spun Mulberry silk is the highest,followed by spun Cassava silk,spun Tussah silk is the least one;at the same…
A compact magnetostrictive actuator consisting of three Terfenol-D rods and surrounded by a magnetic coil was designed,which is more energy efficient.Based on electromagnetism principles,the relation of the actuator output with the length Terfenol-D rod,the size of the top end plate and the bottom end plate was deriva…
The physical and chemical characters of Migao were studied during storage.Thermal mechanical analysis techniques were used in order to evaluate the retrogradation of starch in Migao.The first transition with a peak temperature(Tp)at approximately 52.331℃ was characteristic for the melting of retrogradated amylopectin…
The Fe54Pt46 thin film was deposited on SiO2〈0001〉 substrate by magnetron sputtering system,then the as-deposited film was vacuum annealed at 650 ℃ in situ.The structure and magnetic properties of the film were investigated by means of X-ray diffraction and vibrating sample magnetometer.The results indicate that phase…
A layered porous calcium phosphate cement (CPC) scaffold was prepared by a salt-leaching method and cold isostatic pressing molding technology,imitating the structure of the flat bone. The phase composition,microstructure and compressive strength of the layered porous scaffolds were evaluated by X-ray diffraction (XRD…
Study the effects of Chitosan on fermented chili. By determining the total amount of acid , vitamin C, nitrite , the sum of bacteria, sensory quality and storage stability , the result showed: Chitosan can inhibit lactic acid fermentation of fermented chili the in the primary time,but there is little difference in the…
Mesoporous material is of much use in the fields of photochemistry,catalyst and separation etc,and it is one of hot spots of research.The research progress of the mesoporous materials is reviewed in this paper.And the classification and synthesis mechanism of the mesoporous materials are also outlined.The potential ap…
Phenolic resin-based activated carbons were prepared from phenolic resin by one-step carbonization activation technology with potassium hydroxide as activating agent. The surface functional group, specific surface area and the porous structures of the activated carbon were analysed by TG-DTA, FTIR and N2-BET. The resu…
Polycrystalline lead iodide (PbI2) thin films were deposited on glass substrates by electron beam evaporation method. The influence of different substrate temperatures on the structure,surface morphology and optical transmittance of the films was studied. XRD analysis shows the PbI2 films deposited at different temper…
With the development of computer science,the softwares are more and more used in textile industry.This paper takes advantage of the MATLAB software,which has powerful image processing toolbox and wavelet toolbox,to process the image of thin crosseetion of sizing,then to display the infiltration percentage and covering…