Materials Literature
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Ammonia synthesis catalysts are considered as the research starting point of basic heterogeneous catalysis. Ruthenium-based catalysts are the second generation catalysts for ammonia synthesis following the fused iron catalysts for its mild condition such as low temperature and pressure. The advance on the activity inf…
The influence of magnetic field on corona onset voltage was studied in the earthed atomizing corona discharge,and the charging mechanism was studied in earthed atomizing corona discharge under magnetic field.Eventually,the charging mechanism of earthed atomizing discharges under magnetic field was analyzed.The results…
The effect of cooling rate on the microstructural evolution of solidified Zn-27Al alloys was studied. Cylindrical samples with a diameter of 1 mm,2 mm and 5 mm were prepared by copper mould casting,and ribbons were prepared by melt spinning.The microstructures of the obtained samples were characterized by scanning ele…
Drug dissolution is a valid marker to evaluate biological availability of preparation and its uniformity for drug quality control and dissolution test system is apparatus to be used specially for estimate drug dissolution by pharmacopeia.So,dissolution test system is a key factor to evaluate drug dissolution.In this a…
According to the current market demand,a full-automatic sheet extruder with integrated process of sucking,moulding and punching was designed to improve the production efficiency of sheet extruder.This sheet extruder has several advantages such as high efficiency,convenience operation,better quality,saving energy and f…
The equilibrium geometries of the ground state of AlF(X1∑+) have been calculated using different method and basis sets.The conclusion is gained that the method B3P86/6-311++G(3df,3pd) is the most suitable for the energy calculation of AlF by comparing the experimental data.The harmonic frequency and whole potential cu…
The micron calcium carbonate and magnesium carbonate were used as the inorganic filler.Dualistic compound filler filled Polyethylene's influence for the material function had been studied.The compound inorganic particles' synergistic hybridization effect was studied by inorganic activation experimentation,comparing th…
The homogeneous dielectric barrier discharge(DBD) in atmospheric air is most favorable for polymer surface modification due to the low cost of operation and the ability of ambient on-line continuous uniform processing.In this paper,polypropylene(PP) films are treated using a homogeneous DBD plasma in atmospheric air.T…
The starch/polyvinyl alcohol(PVA) composite membranes were prepared through blending PVA with starch without any chemical treatment.The starch/PVA membranes were characterized by the mechanical assay,swelling test and FTIR analysis.The blood-compatibility of the blending films was evaluated by using the hemolysis assa…
The effect of tetraphenyl resorcinol diphosphate(RDP)and aluminum hydroxide flame retardants on PC/ABS alloy properties was studied.ABS-g-MAH graft copolymer was chosen to be the compatibilizer,and the influence of ABS-g-MAH dosage on the PC/ABS property alloy was also studied.The results showed that the addition of f…
The preparation techniques and properties of lignocellusic-based polyurethane as well as the progress on enhancement of their flame resistant properties were reviewed.The lignocellusic-based polyurethane materials can be synthesized from diisocyanate and bio-polyol.The bio-polyol could be obtained from the degradation…
Magnetic composite microsphere is a novel material composed of magnetic material and organic polymer.The development of the biological coupling modification on magnetic composite microsphere and its applications in biomedical fields are reviewed in this paper.In addition some problems and prospect of this material are…
Hydrogen addition will influence the characteristics of spray atomization and combustion of diesel oil,and emission characteristics of hydrogen/diesel engine.The modified KIVA-3V codes was used to study the characteristics of NOx and particulate emission of hydrogen/diesel engine and the effect of hydrogen addition on…
In this paper,2-hydroxybenzoic acid is used as additive to control the crystallization of CaCO3.The polymorph and morphology of crystals are characterized by X-ray diffraction(XRD)、scanning electron microscopy(SEM) and thermogravimetric analysis(TGA).As the results have shown,both spherical vaterite and calcite are pr…
The microstructure and mechanical properties of 1Cr17Ni1 ferrite-martensite dual-phase stainless steel with different Si-Al content were investigated by OM,SEM,resistivity test and unidirectional tensile test.The results show that a small amount of Si(1%) can improve the strength dramatically due to the role of soluti…
The molecular dynamics simulation combined with the simulated annealing method are used to study the melting behaviors of free cobalt clusters and two kinds of supported cobalt clusters with cluster size ranging from 400 to 20000 atoms.Gupta potential is used for the cobalt -cobalt interactions in Co clusters.Influenc…
Nano-carbon materials were synthesized by the catalytic decomposition of acetylene at 400 ℃ and 420 ℃ in a chemical vapor deposition process using iron supported on sodium chloride as catalyst.The catalyst was examined by X-ray diffraction,scanning electron microscopy and energy dispersive spectroscopy.The results sho…
The preparation of the jute/epoxy composite plate and the effect of the fiber content and length on the tensile strength,tensile modulus,bending strength and modulus were investigated.The tensile fracture morphology of the composites was observed by SEM.The tensile and bending properties are improved comparing with pu…
The fading reaction of 2,3,7-Trihydroxy-9-Salicyl Fluorone solution oxidized by H2O2 can be greatly catalyzed by Nickel(Ⅱ) in sodium by droxide solution at 45 ℃.The optimum experimental condition of the reaction was studied and a new catalytic kinetic method of trace Ni(Ⅱ) determination was proposed based on the upper…
The process of association reaction in telechelic polymer solution was investigated by dissipative particle dynamics(DPD)simulation method.We studied the effect of some master factors such as the reaction degree,the length of telechelic polymers and the concentration of telechelic polymers on the product morphology.Wi…