Materials Literature
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The X-substituted cobalt tetraporphyrins (CoTXPP) (X=H, Cl, NO2) were easily bound to the side chains of the grafting particles poly(4-vinyl-pyridine-co-styrene)/SiO2 (P(4VP-co-St)/SiO2) via an axial coordination reaction to prepare supported catalysts CoTXPP-P(4VP-co-St)/SiO2. Structures of the CoTXPP-P(4VP-co-St)/Si…
As new materials with special characteristics,the negative refractive materials have been a focus.This paper introduces the unique characteristics of negative refraction,and expounded deeply the three ways to realize negative refraction,which are left-handed medium, chiral medium and photonic crystals,among them,the b…
The synthesis of hydrochloric acid doped polyaniline was preformed by using manganese dioxide instead of the ammonium persulfate oxidant,and the polyaniline coated silicon dioxide particle composites were obtained by adding a proper proportion of silicon dioxide particles to the oxidation-polymerization reaction syste…
the process and product performance of using low-cost production of high-strength low-alloy steel Q345B on ASP1700 in Jinan Iron and Steel production line.Developed by the chemical constituents of low-alloy steel Q345B adopt low-phosphorus low-silicon high manganese sulfur,do not use Nb,V,such as micro-alloying,throug…
Ethyl tertiary butyl ether(ETBE)was synthesized from ethanol and tert-butyl alcohol catalyzed by the Hβ zeolite,HY,HUSY,HZSM-5 and D-06 resin in a fixed-bed reactor.The comparison experiments were performed and the results showed the catalytic activity order of zeolite was:Hβ zeoliteHYHUSYHZSM-5,the catalytic activity…
A multi-layer graphite calorimeter for the measurement of depth-map of the absorbed dose and the energy of the electron beams,and a device of the semi-adiabatic graphite calorimeter for the measurement of the absorbed dose and the calibration of film dosimeter were developed for the requirement to the standard method…
The chloromethylation of crosslinked polystyrene(CPS) microspheres was performed using 1,4-bis(chloromethoxy)butane(BCMB) as the chloromethylation reagent.Then the nucleophilic substitution reaction between 5-amino salicylic acid and benzyl chloride groups on the CMCPS microspheres was conducted,and amino salicylic ac…
By introducing distribution function to characterize the polarization in films,GLD(Ginzburg-Landau-Devonshire) thermodynamic theory is used to investigate the influence of non-ferroelectric local distorted structure on polarization properties of ferroelectric thin films.The results show that non-ferroelectric local di…
Carbon fibers (CFs) were surface oxidized and aminated,respectively. The influence on the element contents and functional groups of the fiber surface was investigated with X-ray photoelectron spectroscopy (XPS). The oxygen content increased significantly and the (O+N)/C ratio was comparably higher after oxidation trea…
A fluorinated indiumphosphate,InF_2[PO_3(OH)]_2(NH_4)_3,has been prepared under ionothermal condition using deep-eutectic solvents of choline chloride and urea as solvent and template-delivery agents.The same material can not be observed with the presence of the same deep-eutectic mixture under normal hydrothermal pro…
The reinforcing of rigid polyurethane material by the glass fiber is prepared with the direct synthesis.The reinforcing results show obvious difference with the different ratio of length and diameter of glass fiber.When the content of glass fiber is 10%,the mechanical properties of RPU are optimal.The tensile elastici…
In this article is described the development of top carding mechanism of comber,discussed its carding function of double-side top comb in comber with the focuss on the structure of JZD double-side top comb and compared the impact of different top comb on the formed yarn quality.
With bright continuous annealing simulator,the microstructure and properties of 0.08C-1.7Mn-0.03Si steel treated with different overaging temperature and the phase transformation during continuous annealing process were studied.The results show that second phase was mostly of granular bainite and martensite in the spe…
The casting microstructure and its change during remelting of AlSi7Cu5 alloy cast by slope-liquidus method were researched.The results show that it has a significant impact on microstructure by cooling methods,casting molds and pouring methods.The microstructure of AlSi7Cu5 alloy obtained by slope liquidus method is u…
The defoaming mechanism of organoic silicon defoamers is described,and the application of organic silicon defoamer are reviewed.
Stretching and elastic recovery properties based on elongation of three kinds of PTT (Polytrimethylene terephthalate)/PET (Polyethylene terephthalate) self-crimping filaments with same linear density were tested. The testing results showed that there were typical two steps and two yield points in the force-elongation…
Cubic ZrO2 provides an excellent ionic conduction and is extensively used as electrolyte of solid oxide fuel cell(SOFC) in recent years.The ion electrical conductivity in solid is dependent on both carrier concentration(density) and mobility,while the conduction and diffusion of solid state ions are dependent on the s…
Viscosity and stability over time of PVC plastisols were studied based on compounds of a high-and a low-degree polymerization PVC paste resins,PSH-10 and CPM-31.When PSH-10/CPM-31=20/80,the plastisol provided the lowest viscosity.When PSH-10/CPM-31=50/50,the worst stability was observed.The viscosity and stability of…
Polycrystals of double-layered perovskite Nd2-2xCa1+2xMn2O7 (x=0.0～0.9) were prepared by solid-state reactions. With the Rietveld-Method,the samples' XRD pattern was fitted by the program FULLPROF. The compounds show the space group I4/mmm at the room temperature. The temperature dependence of the resistivity (80KT300…
Based on the empirical electron theory of solid and molecule(EET),the valence electron structure(VES) of(NiM)Al is calculated.Several parameters of mechanical properties involved in nA and ρLA are used to characterize and assess the effect of alloying elements on the ductility and hardness of NiAl intermetallic compou…