Materials Literature
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By way of cyclic voltametry the paper makes a study of the effect of adenine on the electrochemical properties of adrenaline in hydrochloric acid and sodium chloride of Ph1.0 1 and I 0.5 at a platinum electrode.The results show that adenine has stabilization on adrenaline and to some extent inhibits the oxidation of a…
A new type of Gemini surfactants 16-4-16 has been synthesized with Hexadecyl dimethyl tertiary amine and 1,4-dibromo-butane,and the viscosity and surface activity of the target product are detected.The results showed that the surfactant agent can greatly deceases the surface activity at lower concentration,also has be…
Aluminum oxynitride powders(ALON)were synthesized by carbothermal reduction method using γ-Al2O3 and activity carbon as raw materials.The rate of γ-Al2O3 and activity carbon,synthesizing temperature,holding time and removal of carbon impurity were studied in this paper.The prepared powders were analyzed by XRD and SEM…
Back-illuminated Al0.42Ga0.58N/Al0.5Ga0.5N P-I-N 64×1 solar-blind linear FPA of UV photodetector grown on sapphire by metalorganic chemical vapor deposition was fabricated.The cut-off wavelength is 285nm and the current responsivity at the peak wavelength of 275nm is 20mA/W under zero bias.The dark current of each pix…
Co2+Fe2+Fe3+-LDHs were synthesized in using co-precipitate method on fiber and degreased popped-corn.Some micron-tubes and nanoparticles of Co/Fe spinel ferrite were obtained by temperature programming.The micron-tubes and nanoparticles were characterized by XRD,FT-IR,TG-DTA,SEM,Mssbauer spectroscopy.It indicates tha…
The mechanical properties of 6061Al composites with uniform reinforcement of SiCP, centralized reinforcement of SiCP /6061Al, Si3N4 net reinforcement and 3-D weaving carbon fibre were investigated. The results indicate that compared with the uniform reinforced composite, the centralized reinforced composite shows lowe…
The influences of stirring time and surface modification of carbon black(CB) on the resistivity and electromechanical properties of CB filled epoxy matrix composites were experimentally studied.The test results indicate that the dispersion of CB in the epoxy can be improved with the increase of stirring time,which is…
In order to improve the surface quality of Al part after passivation treatment,its process flow and part defects frequently arisen,as well as some key points that should be grasped during aluminum passivation operation were detailed.The result shows that familiar defects control in aluminum process is achieved by maki…
5-(4-carboxphenyl)-10,15,20-tri(4-chlorophenyl)porphyrin(Ⅰ) was synthesized using p-chlorobenzaldehyde and p-carboxylbendehyde as the starting materials,and then two target compounds(Ⅲa、Ⅲb) were prepared by Ⅰ、dibromane and 5-fluorouracil.The optimum reaction conditions for synthesis of Ⅲa and Ⅲb was:when DMF was used…
Objective To test the cytotoxicity of synthetic poly(ethylene glycol)-D,L-lactic and glycolic acid-poly(ethylene glycol)(mPEG-PLGA-mPEG,PELGE) and the nanoparticles made of it in our lab for intravenous injection.Methods MTT-assay was used to evaluate cell relative proliferation rate(RGR) and cytoxicity of PELGE eluen…
The synthesis process of ethylenediamine modified poly(lactic acid)(EMPLA)and its hydrophilic properties were studied.EMPLA was synthesized by using lactic acid,maleic anhydride and ethylenediamine as raw materials,and process parameters was optimized.The performance and structure of Poly(lactic Acid)(PLA),maleic anhy…
The electrochemical behavior of o-nitrophenol on glasssy carbon electrode was investigated in Br by using Pt as auxiliary electrode,saturated calomel electrode as reference electrode.The results showed that the peak current was observed to increase and the peak voltage shifted to negative as the scan rate increased,wh…
The main approach and principle of organic silicon modified epoxy resin to improve its flexbility are claimed in this paper,which gives a discription of research developments of organic silicon modified epoxy resin in three aspects:research of silicon rubber modified epoxy resin,polysiloxanes modified epoxy resin and…
The effects of the plasticizer systems on the physical properties and dynamic properties of NR/ TPI vulcanizates were investigated.The results showed that the effects of plasticization with aromatic oil was better than that with peptizer B in NR/TPI(85/15) blends.After adding 2~4phr aromatic oil,the processability of…
The Effect of Ethylene Glycol on the Growth Rate of Different Calcium Carbonate Polymorphs at Conditions of Hydrate Inhibition in Natural Gas Production
In the paper, the synthesis of phosphorus-nitrogel containing flame retardant, MP,MPP,CN-329 and Melabis were studied, the yield of they were 95 %, 99 %, 60 %, 46.2 %. And they were characterized by FTIR,NMR,HPLC and element analysis. A new synthesis method of MPP was introduced. It was deduced which the application o…
The effect of Ca,La,Sr addition on the microstructure and mechanical properties of AZ91D alloy was analyzed by using X-ray diffraction,optical microscopy,scanning electron microscopy and energy dispersive spectrometer.The results show that the microstructure could be refined greatly by adding three elements of Ca,La a…
The transformation of the collector is key in the transformation of electric furnace cleaning sytem for Baosteel Branch of Baoshan Iron and Steel Co., Ltd.With the limited conditions,the filter air velocity of the collector will be high after the transformation.This paper discusses the feasibility of the application o…
Jet projectile charge (JPC) is a relatively new type of perforating jet mainly u sed for defeating concrete targets. Velocity profile is an important parameter t o investigate the penetration and performance of JPC. Since limited information such as X-ray radiographs and penetration depth can be obtained through the J…
Studied the microstructure and wear-resisting property of Cu-Ag Alloy extruded by ECAP.It shows that ECAP successfully make the grain refined,the grain size from 5 to 6μm to about 2.5μm;microhardness and wear-resisting property increase,the microhardness is 70%higher than that of the alloy before ECAP,the wear weight…