Materials Literature
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Low temperature thermal dechlorination process was a common technique of decomposing dioxins from municipal solid waste incineration ash.This technique can efficiently remove most dioxin congeners,but it was also easy to produce additional dioxin.In order to overcome the disadvantages of the technology and further imp…
Using the tungsten with purity of 99.99% as target,WO3 thin film was deposited on glass and ITO substrates by radio frequency(RF)reactive magnetron sputtering method.The flow ratio of O2 to Ar was 5∶25,and the pressure was 1.5Pa.All samples were annealed at 400℃for 1h.The influence of different input power on the phas…
A new type of 12% Cr heat-resistant steel with 3% Co, 3% W and trace B was quenched and tempered by vacuum heat treatment furnace, whose room temperature mechanical properties and metallographic structure supplied the specific requirements. However, the high-temperature short-time lasting performance was unqualified r…
Dimethyl ether is a new fuel which has good performance and the future development. There are mainly two preparation methods:twostep method and one-step method. From a long term,one-step production has high economic value,but the preparation of dimethyl ethe from CO2and hydrogenation is the future direction. Dimethyl…
The synthesis methods of poly( trimethylene terephthalate)( PTT) and its key raw material 1,3-PDO were summarized. The byproducts of PTT during the preparation and production process were introduced. The performance and application fields of PTT material were also briefly introduced.
We prepared a copper powder conductive adhesive with copper powder,epoxy resin, modified amine curing agent,coupling reagent KH-560,Sunkist toughener,thinner,etc.Our laboratory evaluated the effects on the conductive properties of the particle size,and amount of cupper powder,copper surface treatment,substrate and cur…
The effects of the complexion of methyl tin mercaptide and barium stearate on the poly(vinyl chloride) were studied,the result indicated that they improved the thermal stability of PVC. The decomposition temperature was greater than 208℃ when the heating rate is 5℃ /min and the decomposition rate is 5%. It showed good…
To improve the quality of ink jet printing of cotton fabrics, this paper studies sizing technology of digital printing with reactive dyed cotton fabrics, analyzes the effect of sizing formulation parameters on the digital printing result of cotton fabrics. The ink jet printing effects in different parameters have been…
Bound charges of poled PZT 95/5ferroelectric ceramics will be released under shock wave loading to form a high-power electrical energy output.For a shock loading perpendicular to the polarization direction,a model describing the depolarization and discharge process of PZT 95/5ceramic by normal shock-wave is proposed i…
During the experiment in the host plant,big and small key slot of 20CrMnTi cam shaft were fractured.Chemical analysis on fracture position of cam shaft,optical microscopy and scanning electron microscopy analysis on the microstructure and crack shape,hardness test of the cam shaft big key slot cross section and small…
For understanding the relationship between the expansion flow and process conditions, based on the DEFORM-3D software, the model of rigid-plastic FEM was established. The velocity evolution rule on the longitudinal symmetry plane was analyzed during the forming process through numerical simulation. The effect of extru…
A new cadmium(II) complex Cd(OBBA)2(2,2A-bipy)2 with 2-benzoylbenzoic acid(HOBBA) and 2,2-bipyridine(2,2A-bipy) as ligands has been synthesized. Crystal data for the complex are as follows: monoclinic, space group P21/c with a = 16.402(3), b = 10.4191(18), c = 23.395(4) A, β = 91.765(2)o, V = 3996.2(12) A3, Dc = 1.455…
Carriers of TiO_2,ZrO_2 and TiO_2-ZrO_2 with different ratios were prepared by sol-gel method.Some manganese-cerium(Mn-Ce) active components were loaded on these carriers by ultrasonic immersion.The catalysts were characterized by scanning electron microscopy(SEM),X-ray diffraction(XRD),X-ray photoelectron spectroscop…
For improving computation efficiency of the direct simulation Monte Carlo(DSMC)method and overcoming the difficulty of prior knowledge about particle weight before the starting of DSMC simulation,a new predefined solution method of the particle weight is introduced,which can be obtained by analyzing its definition and…
Mn-Zn ferrite Mn0.3Zn0.7Fe2O4was prepared by sol-gel/combustion process,and the preparation conditions were investigated.The samples were characterized by XRD,SEM,TG-DSC,Network analyzer,and so on.The results showed that the pure Mn-Zn ferrite with a uniform particle size of about 160 nm could be formed when pH value…
The production,source,composition and characteristics of kitchen garbage were introduced.The traditional processing methods and modern recycling technologies were discussed,including landfill,composting,incineration,solid feed and biological treatment.For the production of kitchen garbage reduction,recycling,harmless…
Shear experiment on friction stir welded 2024-T3 aluminum alloy stiffened panel specimens is conducted to obtain the buckling behavior and carrying capability of the structure. Finite element method(FEM) is applied to analyze the stability performance of the simplified structure model and the results are compared with…
A magnetic measurement apparatus for steel element based on LabView has been designed.The measuring principle of the device and the realization of hardware and software are discussed.The apparatus consists of sensor,pulsed field generator and data acquisition system.Pulsed field is generated by discharging the capacit…
The chlorosulfonated polyethylene anti- corrosion coating was modified by using rare earth additives. The technical indicators testing showed that the comprehensive anti- corrosion ability had been markedly improved,and could meet the general heavy anti- corrosion requirement. The practical effect of pilot products is…
The enhanced poly(lactic acid)/glass fiber(PLA/GF) composite materials with KH550 were prepared by melt compounding and compression molding technologies.Their morphology and mechanical properties were studied by FE-SEM and materials testing machine.The results showed that the surface of GF was covered by the PLA matri…