Materials Literature
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The composition and layout of a horizontal hydraulic pressure straightening machine was described.The roller chain driving motor power of feeding table,transfer roller motor power and bar stock turnover torque were analyzed and calculated.The design parameters of the corresponding parts were then determined.Actual pro…
In this paper,the flame retardant EPDM cable materials was prepared by EPDM used as matrix,silica used as reinforcing agent,magnesium hydroxide and aluminum hydroxide used as flame retardant.The effect content of reinforcing agent and flame retardant on EPDM property was studied.Mechanical performance and morphology o…
Spongy NiFe2O4 clusters were synthesized via solvothermal process with poly(vinylpyrrolidone)(PVP) and hexamethylenetetramine(HMTA) as additives.The samples were characterized by XRD,VSM,SEM,TEM,BET and ICP.The results show that when PVP and HMTA are added to the reaction system together,the as-synthesized spongy NiFe…
Electronic backscatter diffraction(EBSD) is a relatively new technique used in scanning electron microscopy to analyse the polycrystal microscopic structure and texture.The sample preparation has great effect on the imaging quality.According to the experiment of preparation of commercial pure titanium,some essential o…
A number of uniaxial stress-controlled cyclic loading experiments are conducted for extruded AZ31 magnesium alloy in order to investigate the influence of tension-compression asymmetry on fatigue properties.The cyclic strain amplitude,peak strain and energy parameter are studied.The results show that the hysteresis lo…
A solid-state displacement reaction was induced to synthesize calcium carbonate during mechanochemical processing.Calcium chloride and sodium carbonate were mixed together and milled at room temperature,and then the as-milled powder was heat-treated at 350 ℃ for 1 h.The calcite nanoparticles were gained by removing th…
The studied coating system consists of two parts,i.e.,epoxy zinc-rich coating as a primer and bituminous epoxy coating as finish.The EIS of the coating system in accumulated water in crude oil storage tank was studied,and the equivalent circuit models of the coatings during the course of immersion was put forward.The…
The mechanism of photochemical degradation of leucomalachite green(LMG) in solvent media has been investigated with a laboratory-built photochemical degradation(PCD) device.Spectrometric characteristics of LMG and it main degradation products suggested that LMG had deassociated under UV irradiation.The kinetics of the…
The polycrystalline samples of Pr0.45(Ca1-xSrx) 0.55MnO3(x=0.0,0.2,0.4,0.6) were prepared by solidstate reaction.Influence of Sr2+ substi-tution for Ca2+ at A site on magnetism was studied through the measurements of X-ray diffraction(XRD) spectrum,the magnetiza-tion-temperature(M-T) curves and electron spin resonance…
This paper analyzes the status of continuous annealing products LSt12 and LSt13 of Pangang.The results show that the controlling condition of continuous annealing products is good in the chemical composition and the structure property aspects.The main surface defects of products are crosswise stripe and indentation,th…
Engineering design concept of the prototype of continuous lead smelting process via swirling column is analyzed,major issues in furnace structure and control process of the process are discussed and feasibility and reliability of this new technology are preliminarily evaluated starting from the principle of direct lea…
1,3,4-Oxadiazole derivatives have been widely applied as organic electron transport and emmiting materials because of their thermo and chemical stabilities and highly electron affinity.In this paper the recently progreess on the liquid crystals containing 1,3,4-oxadiazole units has been reviewed.Including the linear a…
The current situation of the resource of water-insoluble potash ore deposit in China was described in this paper.Its research actualities,the typical production process and problems of existence of extracting potassium from the resource of insoluble potash ore deposit at home and abroad was summarized,the research sta…
The Mg-4Zn-1.5RE alloy is introduced briefly.A small rolling machine is used for multi-pass rolling,the influences of annealing temperature and time on microstructure of the rolled plate after different annealing process are also analyzed.Meanwhile,the second phase in the alloy TEM images and the EDS are observed.The…
The research progress of polytetrafluoroethylene(PTFE) porous membranes at home and abroad was summarized in this paper.Application of some modification methods such as fill modification,chemical processing modification,high energy irradiation grafting,plasma processing,plasma grafting polymerisation,ion beam implanti…
The mass-lightening design of the force-bearing structure for some satellite platform was studied by using finite element method in MSC.NASTRAN software in this paper.The new gridding composite grid stiffened cylinder was chosen.The objective of the optimization was to minimize the weight of the structure.Design varia…
The force of steel wire was analyzed during the carding process,and the requirements of needling process about trail steel wire of wool yarn clothing were explained.Meanwhile,the contrastive analysis of performance between trail steel wire,oval steel wire and round steel wire was carried out.It introduced specificatio…
Hot rolling is one of the most important steps of controlling texture and precipitation in the production of Hi-B electrical steels.It is observed that extremely elongated secondarily recrystallized grains present in laboratory-scale hot rolled sheets rather than in industrially hot rolled sheets.To understand the und…
The effect of film-forming solution concentration on the properties of methylcellulose(MC)/wheat gluten(WG) edible complex film was studied.The results showed that the tensile strength(TS) and oxygen barrier of the edible film were increased with increasing film solution concentration.The break elongation rate(E) and…
Titanate nanowhiskers were synthesized by a hydrothermal method with nano-sized titanate dioxide rutile as the titanate source,and then the modified titanate nanowhiskers were obtained by loading tributyl phosphate(TBP) on the surface of the titanate nanowhiskers.The morphology and structure of the titanate nanowhiske…