Materials Literature
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Zirconium oxide and product is one of the main raw materials of structural ceramics,conductive ceramics,functional ceramics,biological ceramic.Zirconium oxide has many characteristics,such as high melting point,high temperature resistant,small coefficient of thermal expansion,and thermal stability,good plasticity,etc.…
The influences of AEO surfactants on the celluloase bio-washing effect of denim finishing were investigated,and the mechanism of anti-backstaining through the interaction between AEO-9 and cellulase was primarily analyzed in this paper.The results showed that AEO surfactants can enhance the cellelase bio-washing effec…
In this paper the domesticated activated sludge was used as experimental material and two methods had been used to screen the strain which produced polyhydroxyalkanoate(PHA).Six strains were isolated and identified by physiological and biochemical identification,and they were P1(Pseudomonas),P2(Listeria),P3(Zoogloea),…
A conclusion was drawn that the fracture of No.2 punch for pressing powder block was a low-circle high stress fatigue one after the chemical analysis,macro and micro observation of the fracture surface, metallographic structure inspection,hardness testing as well as the fit clearance inspection between the mold and th…
The preparation and dynamic property of sodium carboxymethyl starch(CMS-Na)were studied by using with sweet potato starch as raw material,sodium chloroacetate as etherization reagent,sodium hydroxide as catalyst and aqueous solutions of ethanol as solvent. The effects of some factors on preparation,such as dosage of s…
In order to clarify the effect of the structural change of reactive polymer on its photoelectric properties,in-situ reaction and related applications,a monomer halogenated position method of changing 9,10-phenanthrenequinone( PQ) w ith high chemical activity w as proposed. With the Suzuki coupling of reactive polymer…
SiO2 nano-particles suspension was synthesized by modified sol-gel method with tetraethyl orthosilicate as raw materials.SiO2 nanoparticles were in-situ modified by vinyltris(β-methoxyethoxy) silane.The effect of factors,such as mass fraction of vinyltris(β-methoxyethoxy) silane,reaction time,reaction temperature on t…
Background: In recent years, with decreasing global fossil resources and increasing white pollution, renewable and biodegradable materials attract more and more attentions. Poly(butylene succinate)(PBS) has good mechanical property, biodegradability and processing performance, which is the focus of hot topics in the s…
Cu-Al alloy was treated at 2 GPa and 750 C for 10 minutes,and effects of high pressure treatment on the microstructure,mechanical properties and friction coefficient of Cu-Al alloy were investigated by metallurgical microscope and nanoindenter.The results show that after high pressure treatment at 2 GPa,the microstruc…
Wet-laid nonwoven and meltblown nonwoven are important materials in production of Lithiumion battery separator.The technological features of nonwoven used in battery separator are briefly stated.The current status of applications of polymeric nanofibers,nanofibrillated fibers as well as high-performance fiber in batte…
Objective To investigate glial fibrillary acidic protein(GFAP) lysine acetylated modification in the spinal cord tissue of amyotrophic lateral sclerosis(ALS) model mouse.Methods After 3 ALS mice about 4 months old were sacrificed with anesthesia,total protein was extracted by RIPA lysis buffer;GFAP and Pan-AC protein…
To get the explosion rule of shielded explosive detonated by impactor shock wave,the Held initiation criterion,shock wave theory and the hypothesis of augmentation area were applied to establish the corresponding model. For the rule of shielded explosive detonated by impactor shock wave,material characteristics were u…
The polyurethane prepolymer was synthesized based on diphenylmethane 4,4-diisocyanate(MDI) and glycidyl azide polymer(GAP).The graft-polymer was gained via reaction of residual-NCO groups on the prepolymer and residual-OH groups on NC.The FTIR spectroscopy and 13 C NMR were used to characterize the graftpolymer.The me…
Recent advances and trends for the investigation of synergy in traditional intumescent flame retardant,the modification of traditional intumescent flame retardant,and the application of polymeric char-forming agent in halogen free intumescent flame retardant were discussed.The problems that should be paid attention to…
In this paper,film-forming behavior of 316 stainless steel in seawater containing Na2MoO4 were studied by using electrochemical impedance spectroscopy test,scanning electron microscope and energy spectrum micro analysis.The results showed that the optimum conditions were 7 of pH,40 ℃ of temperature,72 h of time.In thi…
Effects of NaOH concentration,benzyl chloride and quaternary ammonium amount,reaction temperature and reaction time on grafting have been discussed by orthogonal experiment.The optimum conditions were obtained:dipping with 30% NaOH 20min,kenaf fiber reacted with 8mL benzyl chloride and 0.1g quaternary ammonium under 1…
The wick effect and combustion characteristic of the flaming process of flame retardant long glass fiber reinforced polyamide 6(PA6) are reviewed.Various flame retardant agents suitable for long glass fiber reinforced PA6 are highlighted.The comprehensive development trends are prospected based on the current status o…
In this paper,considering the ratio of Ag and melamine,Ag-doped graphite-like carbon nitride(Ag /g-C3N4) material was finally prepared by calcining with 6.25% the optimum doping amount of Ag.The photoluminescence(PL) behavior of this material was studied,which demostrates that it is selective for the detection of trac…
Use the Y(NO3)3.6H2O,Al(NO3)3.9H2O and Yb(NO3)3.5H2O as the raw material to prepare the Yb:YAG ceramic nano-powders by homogeneous precipitation method,with Urea as the precipitant,adding a certain amount of polyethylene glycol 400 as a Surface-Active Agent.The morphology,and the phase structure of prepared ceramic na…
Low temperature methanation catalyst BC-H-10 was evaluated in a 200 mL side-line device for 12 000 h with crude hydrogen as raw material in Beijing Dongfang Chemical Plant ethylene plant.The fresh and used catalysts were characterized by means of XRD and BET.The results showed that under the conditions of 160 ℃,2.80 M…