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 the case of open-pit bench blasting,the dynamic finite element software ANSYS/LS—DYNA was used to simulate the blasting vibrations by two different equivalent simulation methods.The equivalent load is applied to the elastic boundary around the blasthole and the equivalent load is applied to the excavation contour s…
To improve the processability of the polyimide molding powder,a novel molding powder with twisted structure was prepared with 1,3-bis[4-(3-aminophenoxy)benzoyl]benzene(BABB) and pyromellitic dianhydride(PMDA).The component,morphological structure,melt viscosity,thermal stability of molding powder and the mechanical pr…
Microstructure and its effect on mechanical properties,especially toughness of a nuclear pressure vessel steel SA533B heavy plate were investigated.Granular bainite and some polygonal ferrite were identified in the steel by optical microscopy,scanning electron microscopy and transmission electron microscopy.Tensile pr…
Talcum Powder(Talc) filled polyamide 6(PA6)/polypropylene(PP)/maleic anhydride grafted polypropylene(MAPP) blends were prepared by extrusion and subsequent injection molding.Effects of Talc and compounding sequence(one-step compounding and PA6 masterbatch method) on the morphology and mechanical properties of PA6/PP/M…
Sol-gel method was introduced to prepare nano porous SiO2 antireflection film.The effects of the preparation process on the transmittance of SiO2 film have been studied,and optical properties of the film is characterized by UV-vis spectrophotometer.The results show that the best performance of SiO2 antireflection film…
Hydrogen is usually used as a temporary component to adjust the mechanical and processing properties of titanium alloys through modifying the microstructure.The effect of hydrogenation on the room temperature compression properties was studied with compression test,and the microstructure evolution and phase transforma…
A phase diagram of 1,3,3-trinitroazetidine(TNAZ) and 3-amino-2,4,6-trinitroanisole (ANTA) was draw by origin software and the sensitivity, thermal stability, and detonation performance of the eutectic mixture were tested in order to design a potential TNT replacement for melt-cast explosive. The results show that when…
The fire retarded synergistic agents of montmorillonoite(MMT),zinc borate(ZB) and MnO2 were respectively blended with the intumescent fire retardant(IFR) to prepare the fire retarded korean pine wood flour/polypropylene composites.The fire retarded synergistic effect was evaluated by the thermal analysis of TG,DTG and…
In order to seek for the reasons why one-stage RO of seawater is corrosive to Q235 carbon steel,dynamic coupon tests were carried out to research on the corrosion properties of Q235 carbon steel in seawater and one-stage RO of seawater,and the surface appearance of plates and corrosion components were analyzed.Results…
The preparation of gelatin peptides with specific molecular weight distribution had attracted wide attentions for higher value application of officinal gelatin and collagen.However,the separation of gelatins with specific molecular weight distribution was difficult because of its dispersity and inhomogeneity.In this s…
Pd-Ag/CeO2-ZrO2-La2O3-Al2O3 catalysts were prepared by the co-impregnation method.Low temperature nitrogen adsorption-desorption,X-ray diffraction(XRD),H2-temperature-programmed reduction(H2-TPR),Ultra violet-visble difuse reflectance spectroscopy(UV-Vis DRS) and X-ray photoelectron spectroscopy(XPS) were carried out.…
Studied the atomic percentages and binding energies of oxyen on the oxide films of conventional polycrystalline 304 stainless steel(CP-304) and bulk nanocrystalline 304 stainless steel(BN-SS304) prepared by severe rolling technique at 900℃ for 24h by X-ray photoelectron spectroscopy(XPS).There were molecular state(O0)…
TIP TIG welding is a new welding technique invented by Ing.Siegfried Plasch and Patented in 1999.In this paper,the characteristics of TIP TIG welding process and the principle are introduced.TIP TIG is a relatively new process which effectively provides TIG welding at MIG/MAG welding speeds.For TIP TIG a secondary osc…
The single crystal of benzotrifuroxan(BTF) was cultured using the mixed solvent of water and methanol.BTF was characterized by using the X-ray single-crystal diffraction analysis,mass spectrometry,nuclear magnetic resonance spectrometry,element analysis and FT-IR technique.The results show that the crystal is orthorho…
The status and trend application and research of the free-cutting nonleaded brass alloy are expounded,and the main characteristics of bismuth brass,silicon brass which is widely produced and used are introduced emphatically.The development of a new type of the free-cutting nonleaded tellurium bismuth brass has been di…
The concentration and characterization in stack gas and fly ash from two secondary aluminum metallurgy plants and one secondary lead metallurgy plant were investigated.The results showed that the concentrations of PCDD/Fs in stack gas released from the two secondary aluminum metallurgy plants were 2.14 and 0.88 ng TEQ…
Through copolymerization using 1,2-dibromoethane and N,N,N’,N′-tetramethylenediamine as raw materials, a water-soluble oligomer quaternary ammonium as an Anti-Swelling Chemical were synthesize indoors. Research shows that the best synthetic process conditions is in the reaction temperature for 70, the reaction time is…
A novel Keggin-type phosphotungstic acid H7[P(W2O7)6]/2-amino pyridine electropolymerization(PW/PAP) modified glassy carbon electrode was fabricated by electrodepositing H7[P(W2O7)6] onto 2-amino pyridine electro-polymerized glassy carbon electrode.The electrochemical behaviors of PW/PAP modified electrode were invest…
Nb-Ti-Mo pipeline steels with or without La addition were fabricated.Effects of rare earth La and coiling temperature on microstructure and mechanical properties of the steels were investigated by means of TEM,SEM and EDS analysis,and tensile and impact tests.The results show that the morphology of inclusions in the L…
Laser diffraction method was applied to measure the particle size distribution of medium density fiberboard(MDF) sanding dust.The results presented a wide size distribution of MDF sanding dust.More than half of the dust particles were small particles with diameters less than 50μm,among which,suspended particles with a…