Materials Literature
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Application of FHI hydroupgrading isodewaxing technology developed by Fushun research institute of petroleum and petrochemicals(FRIPP) in 400 kt/a diesel fuel hydrogenation plant was analyzed.The results show that FHI technology can significantly decrease sulfur content and nitrogen content in catalytic diesel fuel,si…
The active brazing method of C/SiC ceramic matrix composite to Nb alloy is discussed.The wettability of Ti-and Cu-based brazing alloys respective on C/SiC ceramic matrix composite and Nb alloy is studied,and the diffusion features of microcosmic elements on brazing connection interfaces of the two brazing alloys are i…
The degradable super hydrophobic plastic film was prepared with polylactic acid(PLA) and poly(propylene carbonate)(PPC) by phase separation method.The effects of material proportion,treatment time and temperature of solvent on the wettability of the plastic films were discussed.When PLA(wt%) was 70%,the treatment time…
By means of the first-principles method,we investigate the change rule of crystal structure, magnetic structure and d electronic structure of Mn atom for magnetic shape memory alloy Mn_2NiGa in the martensitic phase transition.The results show that in the martensitic phase transition for Mn_2NiGa, a Jahn-Teller distor…
High voltage and ultra high voltage transmission have become the development trend of power transmission.With the improvement of the transmission voltage level,corona discharge has become an important factor affecting safety and stability of high voltage system.In this paper,the threshold de-noising method of signal r…
Along with the development of genetic engineering technology,the clinical application of protein and polypeptide drugs are paid more and more attentions.However,the disadvantages such as immunogenicity,toxicity and short half-life of protein and polypeptide drugs limit their further application and development.Since p…
The strengthening effect of a new type of silane coupling agent on furan resin for foundry was presented.The effect of the production process and the environment on this reinforcing agent was studied.The performances such as the service life of the new silane coupling agent has been explored,and the strengthening mech…
Parametric design of low pressure casting aluminum alloy wheel(H0157) was done.Combining finite element strength analysis with optimization design together,the process of automotive aluminum alloy wheel was studied.It provides an advanced method of aluminum alloy wheel design to the designers.It makes full use of the…
From the experimental verification and cost analysis,the coating and bath performance of matt tin plating were compared between stannous methanesulfonate and stannous sulfate electrolyte.The results show that the stannous methanesulfonate electrolyte has superiorities both on coating and bath performance,but has almos…
Based on multi-jacquard bar Raschel lace craft design practice,and focussed on the technological features of band edge cut lace,band edge cut lace is classified and the principle of its separation is expounded with their process designs of straight edge lace,wave edge lace,eyelash edge lace and other forms of lace edg…
The corrosion behavior of Ti-Pd alloy in formic acid solution was investigated by electrochemical method and immersed corrosion method in combination with SEM and XRD.The results show that as the temperature of formic acid solution goes up,the corrosion resistance of Ti-Pd alloy will go down.When the temperature is at…
The melting process for vermicular graphite cast iron RuT300 in medium frequency induction furnace of 12 kg was discussed.Using FeSiMg5RE5 alloy as vermicular agent,Si-Ba alloy as inoculants and the pit method of vermicularizing treatment process,the effects of process parameters such as the addition of vermicular age…
Calcium carboxylates of tung oil diacid were prepared by adding methyl of C21 diacid(TMAA)as raw material and liquid sodium hydroxide to liquid calcium chloride simultaneously,toluol as solvent.The thermal stability of PVC was determined by means of the Congo-red test and torque rheometer process tests.And its effect…
The multi-pulse chaotic dynamics of a simply-supported symmetric cross-ply composite laminated rectangular plate with the parametric and forcing excitations is investigated.Based on the two-degree-of-freedom non-autonomous nonlinear dynamical system with strong coupled nonlinear terms,the extended Melnikov method for…
In order to improve the quality of hard coatings on high aluminum alloy surface,a comparison between two different aging processes is carried out for 7A04 aluminum alloy after solution treatment to determine a heat treatment process which is suitable for hard films prepared by magnetron sputtering method.After determi…
Hydroxypropyl-chitosan is a king of water-soluble chitosan,compared with chitosan,it is better advantages in some characteristics,such as hygroscopicity and absorbability,antibacterial activity and adsorptive.In addition,properties and their mechanism of the hydroxypropyl chitosan were described in detals,at last,it w…
The continuous cooling transformation(CCT) curve of 25MnVC steel is determined with Formastor-F full-automatic phase transition instrument and the law of its structure transformation at different cooling rates is studied.Through comparing the CCT curve of 25MnVC steel with that of 25MnVK steel,it is found out that the…
Finite element analysis of the steel bar connecting sleeve by using DEFORM-3D,from the appearance 、the stress and damage of the three perspective,that compared the four rough pieces to achieve the goal to optimize the selection ultimately.The results show that the maximum stress of cold heading in the new process redu…
The effect of reactive polyethersulphone on the properties of 6421 bismaleimide resin for RTM were investigated by SEM and mechanical properties tests.The results showed that the impact toughness of the 6421 resin was significantly improved by rPESU.The rPESU formed a continuous phase in 6421BMI resin when rPESU conte…
PbS nanoparticles with different morphologies,such as spherical,cubical,spindle-shaped,shuttle-shaped and rod-like,were prepared in W/O microemulsion solutions containing P-Octyl polyethylene glycol phenylether(OP),n-pentanol,cyclohexane and water.Morphologies of PbS nanoparticles were characterized by transmission el…