Materials Literature
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In order to control the cooling velocity of forgings in polymer quenchant at different cooling stage,a time-controlled quenching method was used.Adopting UCON E polymer quenchant and appropriate cooling parameters,the problem—not hard in oil and crack in water after quenching is solved for middle sized forgings made o…
Using the n-butyllithium as initiator,self-made cyclic ether modifier(modifier T),cyclohexane and hexane mixed solvent,the high-vinyl solution-polymerized styrene-butadiene rubber(SSBR) was prepared by anonic solution copolymerization,and its properties were investigated.The results showed that,modifier T gave good co…
A kind of aliphatic carboxyl acid resin(PS—COOH) was prepared with crosslinked polystyrene and succinic anhydride by Friedel-Crafts acetylation functional reaction and the bonded cellulose chiral stationary phase was obtained by the reaction of the chlorided carboxylic acid resin(PS—COCl) and the cellulose phenylcarba…
The business activities of the foreign epoxy enterprises,the development of the novel epoxy resins,epoxy curing agents and modifiers and the technical progress in epoxy adhesive,coating,UV curing procuct and composite from 2008 to 2009 were reviewed.
Unsaturated polyester resin samples with 0%,35%,45%,55%(WT)magnesium hydroxide respectively were synthesized by 1,2-propanediol,phthalic anhydride,maleic anhydride and styrene.And their flame behavior was investigated by dual cone calorimeter.The result indicated that the ignition time of samples containing magnesium…
A series of effective measures in the processes of cone winding,sizing and air-jet weaving in producing Lyocell LF/Pearl cotton yarn are introduced.Optomizing size formula and sizing process,property selecting main air jet pressure and timming as well as use of rubber temple instead of metal temple are the keys in int…
Three Schiff base oxovanadium complexes have been synthesized and characterized with element analyses,IR and 51V NMR spectrum.They have been studied that the particle size of drug-loaded liposome and the apparent morphology.IR spectrum and inhibition of liver tumor cells of the complex and the drug-loaded liposomes we…
A novel 2D Cobalt-Vanadium coordination polymer of [Co(PyHbim)2V2O6]n (PyHbim=2(2-pyridyl) benzimidazole)was synthesized under the hydrothermal condition. The structure was characterized by elemental analysis, IR and X-ray single crystal diffraction. The crystal structure of the complex belongs to monoclinic system, s…
Binder is an important part of Li-ion batteries,which can directly impact the performance of battery.Water-based binder has drawn attention in recent years because the introduction of water-based binder to the film coating process of lithium-ion battery can make the production process environmental friendly and reduce…
Two new B-Anderson-type polyoxomolybdates [4,4′-bpyH2][4,4′-bpyH][Cr(OH)6 (Mo6O18)] (1) and [4,4′-bpyH]3[Al(OH)6(Mo6O18)]·2H2O (2) have been prepared under hydrothermal conditions and characterized by elemental analyses,IR spectra and single-crystal X-ray diffraction.Both 1 and 2 are discrete structures.1 contains two…
In order to analyze the harmonics in ferromagnetic resonance accurately,using the harmonic decomposition ability of Fourier,fast Fourier algorithm(FFT) is adopted to analyze the harmonic frequency domain.The various harmonic components are separated so that the harmonic components which are imperceptible in the origin…
To get a UV absorber(RSD-CAH),the benzene acrolein(CAH) was grafted on the multi-amino compound named RSD.Silk fabric was treated with this kind of UV absorber.The antibacterial and anti-UV performances of the treated silk fabric were tested,and moisture absorption,water absorbability and washable performances of the…
Oxyanion-initiated polymerization has been greatly developed in recent years.The monomers have been expanded from methacrylate monomers with a β-positioned donor group in the ester moiety to oxetane monomers and methacrylate monomers with hydroxyl group,and some novel hybranched polymers are obtained.The new progress…
A ternary complex with the formula of [Dy(p-MBA) 3 phen]2(p-MBA = p-methylbenzoic acid;phen = 1,10-phenathroline) was synthesized via the solution method.Elemental analysis,infrared spectra,molar conductance,thermogravimetry and derivative thermogravimetry(TG-DTG) were used to characterize the title complex.The result…
The performances of a H3PW12O40/Al2O3 heteropoly acid catalyst prepared by incipient wet impregnation method were evaluated for glycerol dehydration to acrolein.The activity stability of the catalyst was investigated in a continuous flow fixed-bed reactor,and the fresh and coked catalysts were characterized by BET,SEM…
Strong-acid cation exchange resin Amberlyst-15 used as catalyst,glycerol triacetate was synthesized from acetic anhydride and glycerol.The reaction conditions of the reaction were investigated.And the optimum conditions of molar ratio of glycerol to acetic anhydride,esterification time and reaction temperature is 1∶3,…
The degradation mechanisms of polymer base material of radar absorbing material(RAM) used by stealthy aircrafts in the nature circumstance,sunshine,oxygen,temperature,rain and salt frog,were introduced in this article.The methods of protection were also put forward.
A physical model of the shielding effect in nanometric systems is constructed.Based on electrodynamics,the distribution of charge and electric potential and the parameters of the shield in nanometric systems are obtained.With Cu and Ag as samples,the influences of radius and material on the distribution of the charge…
At present explosives such as trinitrotoluene(TNT) was widely applied in industry and military.However,trinitrotoluene was a class of high toxic carcinogenic material.It would endanger people's health if this kind of explosives material penetrated from soil into groundwater.The detection methods for characterization t…
Taking Weifang montmorillonite as raw material,the adsorption of 1831(octadecyl trimethyl ammonium chloride)on the mortmorillonite was studied in this paper.A new adsorption model was developed to describe the adsorption isotherm,and the mechanism of the change of adsorptive capacity with contact time and pH was exami…