Materials Literature
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On the basis of preparation procedure of normal urea-formaldehyde (UF) resin, a UF resin-based formaldehyde scavenger was gotten. By 13C-NMR and GPC, molecular structure and molecular weight distribution of this formaldehyde catcher were characterized. The formaldehyde scavenger was mixed with a basic UF resin adhesiv…
The flame-resistant polyethylene(PE) composite material was prepared by filling modification of PE with intumescent flame-retardant Deflam.The effects of the addition amount of Deflam on the mechanical properties,thermal stability and flame retardancy of PE were investigated.The results show that with the increase of…
Supercapacitors,named electrochemical supercapacitors,are a new energy storage devices between batteries and conventional capacitors.The research progress in the electrode material,such as carbon materials,metal oxides,conductive polymer,in China and abroad were discussed.
In this paper,low cycle fatigue properties of one pass equal channel angular pressed(ECAP) magnesium alloy AZ31 have been investigated.It shows that the material exhibits cyclic softening drastically at plastic strain amplitude of 0.5%,while exhibits cyclic softening slightly or cyclic stable at strain amplitudes no m…
The low melting glass used as a binder for high-temperature plain carbon steel was synthesized by P2O5,ZnO,and Na2O,then modified with B2O3,Fe2O3,MnO,CoO,and NiO.The results of DTA and XRD showed that the low-melting glasses could be changed to glass-ceramic with heat treatment.Zinc phosphate was precipitated from the…
Reactive action of aluminum chloride(AlCl_3) on PE/PP/PS blending progress was examined. The influences of AlCl_3 content on mechanic properties of PE/PP/PS alloy and crystallization behavior of PP were studied, too. The results show that, there has an effective compatibilization with adding moderate content of AlCl_3…
The nanophosphor Eu_(0.12)Y_(1.78)Ca_(0.10)O_(3-δ) was synthesized by homogeneous precipitation method under ul-trasonic condition.The structures,composition and morphology of the nanophosphor Eu_(0.12)Y_(1.78)Ca_(0.10)O_(3-δ) were characterized by X-ray diffraction(XRD),energy dispersive spectrometre(EDS),inductively…
Silane surface treatment on metal surfaces has been regarded as a more environmentally friendly and effective organic surface treatment method in comparison with phosphating treatment.Generally speaking,silane surface treatment is actually a process in which a silane solution is applied on the surfaces of metals.The e…
This paper described a novel polymerization process-initiator-fragment incorporation radical polymerization(IFIRP) that can be used for catalytic emulsion polymerization for the synthesis of a series of soluble hyperbranched PEGDMA nanoparticles polymers.In the emulsion solution formed by sodium dodecyl sulfate(SDS) i…
16MnV/9Cr18MoV/16MnV sandwich composite plate was produced by process of cutting,forging and hot rolling after centrifugal casting.The microstructure of hot rolling plate showed that one side of 16MnV/9Cr18MoV had clear interface and the other side of 9Cr18MoV/16MnV had blurry transition zone.The composition analysis…
The interaction between mustard gas(HD) and sodium dodecylsulfate(SDS) was analyzed by NMR information,e.g.chemical shift,diffusion,relaxation and the nuclear overhauser effect(NOE).The chemical shift results indicated that HD was located around H4,H3 and H5 of SDS,and the hydrolysates of HD were near with H5.The rati…
The extreme result of insulators contamination discharge is contamination flashover,in order to obtain effective characteristics of contamination discharge,we used the fractal theory to extract fractal dimension and multi-fractal characteristics of leakage current waveform by performing a number of experiments in the…
The poly(ethylene oxide)(mPEO) was polymerized with ring-opening polymerization of ethylene oxide with living anionic polymerization using self-made diethylene glycol monomethyl ether potassium as initiator.Its molecular weight is 2 000,molecular weight distribution 1.07,one end is methoxy,and the other hydroxyl.Then,…
The corrosion behaviors of rusted N80 steel in NaCl solution were studied by linear polarization, electrochemical impedance spectroscopy(EIS) and surface analysis techniques.The results indicated that the control step of the corrosion process changed from electrochemical reaction to diffusion process,the charge transf…
Self-healing microcapsules were synthesized by encapsulating epoxy resin /butyl glycidyl ether within the poly(urea-formaldehyde) coating via in-situ polymerization.The optimum reaction conditions for the prepolymer were to control the pH value at 9～10,the reaction temperature at 60～65 ℃,and the reaction time at 1 h.T…
ZSM-5-filled hydroxyl terminated polybutadiene(HTPB)-based polyurethane(PU)membranes(PU-ZSM-5),were prepared by a two-step polymerization process,and were used as membrane material to recover,isopropyl acetate(IPAC),from aqueous solution by pervaporation(PV).The chemical structure,morphology and thermal stability of t…
We had prepared rare earth-functional polymer light-emitting materials using the PPhPA as the ligand with Eu complexation,and introduced the second ligand phenanthroline.Using infrared spectroscopy,fluorescence spectrophotometer,scanning electron microscopy and X-ray diffraction,we analysed the complexes' structure an…
The all solid-state electrochromic devices with symmetrical structure(SSECD,ITO||PANI||electrolyte ||PANI||ITO) and asymmetric structure(ASECD,ITO||PANI||electrolyte||TiO2||ITO) were prepared by using polyaniline(PANI) as the electrochromic material.Titanium dioxide thin films were prepared by pulling method,and after…
Benzene homologues-containing waste gas was treated by catalytic combustion with Pt/Pd catalyst.The catalytic combustion experiment results show that benzene homologues-containing waste can effectively be oxidized by Pt/Pd catalyst.When inlet temperature of the reactor is 250 ℃ and the space velocity is 20 000 h-1,the…
GaN polycrystalline film was synthesized by CVD using metallic gallium and ammonia as source materials on Al2O3(1111) substrate,and Al film was used as buffer layer.X-ray diffraction(XRD),field emission scanning electron microscopy(FESEM),atomic force microscopy(AFM),and photo-luminescence(PL) were used to characteriz…