Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
In this paper, a structured Pt cathode is prepared by flame spraying and slurry coating. The microstructure of the cathode is characterized by SEM. The electrochemical behavior of single cell with the structured cathode is charac- terized by the electrochemical impedance spectroscopy. Effect of electrolyte/cathode int…
To provide a reference for future production of Jianyang big-eared goats,this paper analyses the changes in trace element contents in Jianyang big-eared goat’s faeces urine in different ages and gender groups.Test groups are divided into four groups,and ICP-OES 6300 radial instrument is used to measure the elements of…
A series of novel terpolymer microgels were synthesized by surfactant-free emulsion polymerization of N-isopropylacrylamide(NIPAM),2-acrylamide-2-methylpropanesulfonic acid(AMPS) and N-tert-butylacrylamide(NTBA) using N,N-methylenebisacrylamide(MBA) as crosslinker in the presence of ammonium persulfate(APS) as initiat…
In terms of the technological conditions of preparation,several typical preparation methods for oxide and noble metal nano-flower materials are introduced,such as electrochemical deposition method,chemical plating method,hydrothermal method,template method,polyol method,thermal evaporation method,low temperature solut…
CrN/Ag hard coatings are prepared by DC reactive magnetron sputtering at 800℃.With the aim of clarifying the effects of Ag conentent and heat treatment on the performance of the CrN/Ag hard coating,the coating microstructure,chemical compositions and hardness are characterized by XRD,SEM,and Vickers hardness tester.Th…
Pectin/chitosan films and calcium-crosslinked pectin/chitosan complex films were prepared.The effect of different proportions on swelling ratio of films and the release rate of tea polyphenols from crosslinked films were investigated.The results indicated that the lowest swelling ratio of pectin/chitosan films was 9.5…
In view of the importance of environment-friendly inter-process antirust solution for various metals in engineering,a solution with the pH value about 7-8 that consists of phytic acid,compound inhibitor and so on was prepared.Atmospheric exposure,lamination and corrosion tests results show that steel,copper alloy and…
The carbon-sulfur polymers as cathode materials were synthesized,and crystalline structures,spectroscopic characters were investigated by IR and Raman.The electrochemical testing indicated the different charge and discharge behaviours in two kinds of electrolytes.And the reason was preliminary studied.
In this paper,problems happened in the use of blowing-carding equipment in semi-worsted are analyzed in detailed with the importance of the blowing-carding units in the semi worsted yarn quality control described.Through the components and the characters analyses of the semi worsted blowing-carding equipment,improveme…
To improve mechanical properties and heat resistance of epoxy resin,epoxy-terminated phenolphthalein polyaryletherketone(E-PEK)was synthesized by reaction of epichlorohydrin with Poly(ether ketone)oligomer having potassium phenoxide terminal group prepared by condensation of phenolphthalein with 4,4'-difluorobenzophen…
Hot deformation behavior of 2A42/2%TiB2 composite was investigated at the temperature range of 380~500 ℃ and strain rate range of 0.01~1 s 1 via Gleeble-1500 thermal simulation machine and the DeformTM finite element simulation calculation.The results show that the flow stress decreases with increasing deformation tem…
Hyperbranched polyester(HBPE) was prepared by esterification of undecylenic acid with hydroxy-terminated hyperbranched polymer.Then the HBPE was sulfonated by using sodium hydrosulfite as sulfonation agent and with NaNO3 as catalyst forming sulfonate type hyperbranched polymer surfactant(SHBP).Effects of reaction time…
A novel two-dimensional(2 D) compound [Pr(1,3-pda)0. 5(nbca)2(H2O)2](pda = 1,3-phenylenediacetic acid,nbca = 5-nitro[1,1'-biphenyl]-3-carboxylic acid) was obtained through hydrothermal reaction and characterrized by means of elemental analysis,IR,TG-DSC and single crystal X-ray diffraction. The results show that the c…
PP/OMMT nanocomposites were prepared via melt blending PP with organic modified montmorillonite(OMMT)with cetrimonium bromide(CTAB),epoxy resin,isophorone diisocyanate(IPDI),octadecylamine(ODI)as intercalation agents.FTIR and XRD were applied to study the structure of the modified montmorillonite(OMMT).The morphology…
In the hybrid lithium ion supercapacitor system with composite LiNi1/3 Co1/3 Mn1/3 O2 as cathode,and activated carbon as anode,the influences of several electrolytes with different proportions of LiBF4 to Et4 NBF4(tetraethylammonium tetrafluoroborate) in acetonitrile on the supercapacitors were studied.The results sho…
A composite coating was prepared by means of micro-arc oxidation(MAO) and sol-gel technique on a magnesium alloy, the coating consisted of a micro-arc oxidation(MAO) sub-layer and sol- gel top- layer. The corrosion resistance of the composite coating was examined by cyclic heat-NaCl solution spray/dry test, while the…
The corrosion behavior of AZ91+0~0.65%(mass fraction)La magnesium alloy in 3.5% NaCl solution was studied by the static weightlessness experiments and potention dynamic polarization.The effects of La on the corrosion rate,corrosion potential and corrosion current of AZ91 magnesium alloy were characterized by scanning…
A phase-field model coupling with solute field and temperature field was established based on the binary phase-field model.The control equation was numerically solved with finite difference method.The dendritic growth in Al-Cu binary alloy non-isothermal solidification was simulated.And the effect of undercooling on t…
PA6nanofibers,the thickness of which is relatively uniform,were prepared by electrospinning in this paper.The influence of sampling method and sampling number on tensile test of nanofiber membrane was discussed in detail.The results show that dispersion degree of testing results is becoming smaller as the sampling num…
ZP protein is a family of proteins which possess a conserved ZP domain and generally play an important role in the fertilization process.In this study,a new ZP cDNA from Branchiostoma japonicum,which codes 927 amino acid residues,was found.By using SMART software,it was confirmed that the ZP protein contains three dom…