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,we synthesise the cellulose tris(3,5-2-dime thylphenylcarbamate) chiral stationary phase and the amylose tris(3,5-2-dimethylphenylcarbamate) chiral stationary phase.Then we make the mixed chiral stationary phase.we present the enantioseparation for 15 racemates with hexane / isop ropanol(90∶10,v/v),the m…
The blend porous membranes of biomedical polyurethane(BPU) and poly(L-lactic acid)(PLLA) were prepared by the immersion precipitation phase inversion method.The influences of different BPU/PLLA mass proportions on the coagulation of polymer/dioxane(DO)/water ternary systems was investigated,and the structure and perfo…
以溶胶-凝胶法制备的TiO2粉末为载体,偏钒酸铵和水合钨酸铵溶液为浸渍液,采用分步浸渍法制备了V2O5-WO3-TiO2催化剂,以聚乙烯醇-硅溶胶为黏合剂,采用涂覆法将催化剂粘合于经硫酸和钛酸丁酯溶胶处理过的不锈钢板板材表面,获得不锈钢板负载的V2O5-WO3-TiO2催化剂.采用XRD、FT-IR和SEM等表征手段对催化剂进行表征,结果表明,V2O5-WO3-TiO2催化剂可均匀负载于不锈钢板表面.采用氨选择性催化还原氮氧化物法研究了催化剂的脱硝性能,结果表明,在空速8000L·(kg·h)-1和反应温度360℃的条件下,NOx脱除率超过92％,且制备的催化剂具有良好的稳定性和耐硫性.
Nano-TiO2/PVC paste composition films,which were prepared by ATBC,PVC paste resin and nano-TiO2,were studied in the irradiation condition of UV light.GPC,SEM,FT-IR and other special analyses were used to characterize the films.The results indicate that the degradation efficiency of nano-TiO2/PVC composition films is i…
Facilities made of iron and steel are liable to severe corrosion in marine environment,and their corrosion under alternating wetting-drying condition of splash zone is particularly severe.Thus the corroded surface morphology and corrosion product composition of DH36 steel used for offshore platform in simulated marine…
Crepe effect fabric can be designed and produced by adopting the method of crepe tissue structure and hard twist weft which is different from warp-weft yarn,and crepe effect can be increased by processing.In this paper,the production key points of 9.5 Tex combed cotton crepe are designed by analyzing the choice of raw…
In this paper water-soluble boric acid ester,sodium benzoate and phytic acid were used as anti-corrosion composite additives in water-based lubricating and cooling fluids for optical equiments.Effects of contents of each additive in composites on anti-corrosion and anti-rust were investigated in detail by testing cast…
Purpose: Cellulose acetate (CA) was blended with polyethyleneglycol (PEG) having different molecular weight at various mixing conditions to enhance melt-processibility of CA, which might prevent the harmful effect resulted from the introduction of phthalic plasticizer. Methods: To establish optimal plasticizing condit…
Annealing experiment was performed,and the samples before and after annealed were studied by SEM(Scanning Electron Microscope) and EDS(Energy Disperse spectroscopy).The hardness of samples was tested.The reasons causing the hardness inhomogeneity in hot-rolled product of H13 steel were analyzed.The results show that t…
High velocity long-rod kinetic energy projectile penetrating into multilayer spaced metal plates was simulated,the residual length and the residual velocity of kinetic energy projectile with different velocity were analyzed.The result indicates the abrasion of the kinetic energy projectile result in the decrease of ve…
The mechanism of influence of normalization on improvement of the electromagnetic properties of non-oriented silicon steel is described and the results of research on the normalization process as well as the high temperature coiling process of the non-oriented silicon steel at home and abroad are reviewed.The status q…
The inner environment of Proton Exchange Membrane Fuel Cells(PEMFC) has great influence on the property and service life of the pile.Aiming at the operation features of air-cooled PEMFC,on the basis of analyzing the control mode of fuel cells'temperature and humidity,the authors study the influence on humidity charact…
Effect of carbon content variation on microstructure of as-cast Mn6 series steel was analyzed.The relationship between carbon content and austenite stability of as-cast Mn6 series steel was studied.The results show that when the carbon content is below 0.93%,pearlite and martensite can been partly observed in as cast…
YAG is widely applied as a new chemical material because of some excellent performances in the chemistry.The pure superfine YAG powders are prepared via the co-precipitation method after calcining the precursor of YAG at 1100℃.The superfine YAG powders have better dispersion and narrow particle size distribution range…
NiOOH and NiOOH coated with CoOOH were prepared by liquid phase oxidation method,using spherical nickel hydroxide,CoSO4 and NaOH as raw materials and K2S2O8 as the oxidant.The crystal structure of NiOOH was proved to be β-NiOOH by X-ray diffraction test.Three kinds of NiOOH electrodes were prepared with the ways of ad…
The hot water extraction was utilized to extract polysaccharide in this paper.Temperature,time and the ratio of water to material were optimized by orthogonal experiment.The optimized extraction conditions were temperature of 85 ℃,time of 300 minute,and the ratio of water to material of 20∶1.Under the above condition…
Anti-corrosion is a very important subject in the oil industry,corrosion is an important factor restricting the oil industry development.So,research and application of corrosion protection technology have great significance.The causes of corrosion in oil production and the influence factors of corrosion are reviewed,t…
With chitosan as the raw material,chitosan microspheres were prepared through crosslinked by formaldehyde and epichlorohydrin under microwave irradiation.The influence of synthesis conditions on adsorption capacity of chitosan microspheres was investigated.The microstructure and morphology of crosslinked chitosan micr…
A series of HZSM-5 zeolite samples with different n(SiO2)/n(Al2O3) ratios and crystal sizes were hydrothermally synthesized and physically mixed with a methanol synthesis component(CuO-ZnO-Al2O3) to form hybrid catalysts.The direct synthesis of dimethyl ether(DME) from syngas was carried out over the prepared hybrid c…
Alumina coating was fabricated onto NiTi alloy surfaces via a liquid phase cathode plasma technique.The phase structure and surface morphology of coatings were examined by X-ray diffraction and scanning electron microscope.The coating consists of γ-Al2O3 and α-Al2O3.The result showed that alumina coating structure was…