Materials Literature
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Sodium hypophosphite was introduced into trivalent chromium sulfate plating bath to prepare electrodeposited decorative chromium-phosphate alloy coating(9%~16% P).The influence of phosphorus content on the performance of the electrolyte and coating was studied.The corrosion resistance of electrodeposited Cr coating wa…
PS/EPDM melting blends were in-situ compatibilized by Friedel-crafts alkylation reaction.Effects of the amount of anhydrous aluminum chloride(AlCl3) on Friedel-Crafts alkylation between polystyrene(PS) and EPDM and properties of PS/EPDM blends were examined.The results showed that a copolymer of PS-g-EPDM can be forme…
In order to solve the problem of oil pollution in the effluent,the copolymethacrylate fiber with absorbing function was prepared by suspension polymerization.The composite needle material was manufactured with the copolymethacrylate fiber which had been reinforced by polyester or polypropylene according to certain pro…
In order to select the appropriate solvent for the separation of 4-chloromethylbenzonitrile and 4-(1H-1,2,4-Triazol-1-ylmethyl)benzonitrile mixture,the static equilibrium method was used to measure the solubility of the two solid solutes in different solvents and provided the essential data for the industrial separati…
Paligorskite had a lot of excellent characteristic. After the physical chemical treatment as acid activation,surface modification of silane coupling agent and polymer matrix nanocomposites constituted,the characteristic can be greatly improved. Therefore,paligorskite was wild used. The modification of paligorskite and…
The corrosion and electrochemical behavior of long-term aging on 17-4PH stainless steel in different solutions has been measured by electrochemical methods.The solutions consisted of chlorine ion sulphuric acid and neutral.Electrochemical potention dynamic reactivation test.The polarization curves re-sults demonstrate…
The reasons of high-directivity,high-efficiency,miniaturization and large scanning range of antennas designed by left-handed materials are explained.The research progress on antennas design by left-handed materials based on both resonant metal structures and composite right/left-handed transmission line(CRLH TL) struc…
Epoxy resin(ER) system was prepared by ER with Methyl hexahydrophthalic anhydride(Me-HHPA) as curing agent and imidazole as accelerator respectively.The curing process of ER/Me-HHPA system was investigated by the dynamic scanning calorimetry(DSC) method,obtaining the influence of heating rate on DSC cures.The kinetic…
Corrosion resistance performance of Cu-containing bridge weathering steels under marine atmosphere was studied by cyclic wet/dry corrosion test and the effect of Cu on the rust layer was also investigated by XRD and SEM method. The results showed that,the corrosion depths and corrosion rates both decreased with the in…
The key technology of the liquid core heavy reduction rolling mill is the roller's normal life cycle in a poor work condition,which is the guarantee of continuous production.The built-up welding roller and roll-sleeve type roller are simulated and calculated in this paper,using material H13(4Cr5MoV1Si) which has bette…
Lignosulfonate had been modified by the reaction of epichlorohydrin.The optimal formula for this complex materials was 30 % epoxy lignosulfonates(LER),60 % linear low-density polyethylene(LLDPE),and 10 % dioctyl phthalate(DOP).The mechincal behavior and biodegradability of the blend were excellent.
A uniform design experimental method was employed to discuss the interactive influence of Cl concentration,pH values and temperature on the pitting susceptibility of X120 pipeline steel in HCO-3+Cl solutions by a potentiodynamic scan technique.The experimental results indicate that Cl concentration,pH values and tempe…
The relative molecular weight and molecular weight distribution of polyacrylonitrile(PAN) precursor fiber were determined by gel permeation chromatography(GPC),the difference of molecular weight and its distribution between domestic and foreign fibers were contrasted.The results show that,domestic precursor fiber has…
The paper analyzes theoretically micro casting stress and cutting stress in casting piston ring,introduces the principle and methods for measuring residual stress of piston ring by using resistance strain gauge method.Through stress testing of different techniques for six sets of casting piston ring,it thinks about th…
A Fe-Ni-W alloy coating was obtained on the inner surface of cylinder liner made of 45 steel. The appearance,microhardness,corrosion resistance and wear resistance of the Fe-Ni-W alloy coating were studied by visual evaluation,microhardness tester,neutral salt spray test,NaCl immersion test,and dry friction and wear t…
The precursor of ZnO thin film was deposited on the conductive glass substrates by homogeneous precipitation method.Then ZnO thin film used for photoanode of dye-sensitized solar cell(DSSC) was obtained by thermal decomposition of the precursor.The structure and surface morphology of the ZnO thin films were characteri…
The influences of triphenyl phosphite(TPPi) as lithium-ion battery electrolytes stabilizers,on the stability and electrochemical properties were studied.Adding 0.1%TTPi in the lithium-ion battery electrolyte and through the normal temperature storage,regular sampling analysis to detect electrolyte physical index,using…
Absorbent can be applied to safeguard electrical equipment,while this application makes the faulty equipment detection results deviate from the verity value,as a consequence of which the measured value can not show the real condition of the faulty equipment.By imitating on-site faulty equipment,some experiments have b…
A series of amphoteric polymeric electrolyte was prepared and their antibacterial activities and dissolving behaviour in water were investigated.A series of quaternized N,O-2-carboxyethyl chitosans(QCECs),which exhibit typical behaviour as amphoteric electrolyte,were obtained through the chemical modifications of N,O-…
In recent years,porous silicon is widely used in the field of micro-transducer technology due to its characteristics of good optics,calorifics,electrics and mechanism.More and more attention are paid on various method and theory of P type porous silicon's electrochemistry etching.The effect of using organic solvent in…