Materials Literature
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EVA/NBR/FR composites containing magnesium hydroxide(MH)and red phosphorus(RP)as flame retardants were prepared.Attapulgite(AT)was used to improve the mechanical properties,oil resistance,flammability,and thermal stability of the composites.It showed that upon introductiing 10phr AT,the tensile strength and elongation…
The mechanism of solidification during soft reduction in continuous casting was researched through m ould reduction experiments.The samples were analyzed by original position analyzer(OPA) and ordinary optical microscope.The results shows that the major segregation contents of GCr15 steel are C and P.The primary dendr…
The formation and evolution of deformation textures in nanocrystalline materials during plastic deformation are closely related to its plastic deformation mechanisms.In this paper,the texture type and research methods of deformation textures in nanocrystalline materials are introduced briefly,and the research developm…
In this work,silk fabrics were grafted and copolymerized with three kinds of fluorinated acrylate monomer(trifluoroethyl methacrylate,hexafluorobutyl methacrylate and dodecafluoroheptyl methacrylate) via atom transfer radical polymerization(ATRP) method to confer silk fabric with water repellence property.The effects…
Titanium loaded MCM-41 mesoporous material was prepared by post-impregnation method.The effects of loading with Ti on the structure and catalytic performance of silica mesoporous material have been researched.XRD,FT-IR,29Si MAS NMR,nitrogen adsorption-desorption isotherms and oxidation of styrene have been employed to…
To study effects of concentration of several ions in sedimentary water of oil tank to pitting corrosion on Q235 steel,hysteretic loops were measured by the electrochemical station CHI660. Results indicated that when the Q235 steel was most serious pitting-corroded,the concentrations of each ions were Cl-10 g/ L,SO2-41…
Chemically bonded magnesia-phosphate cement(MPC) is a new kind of rapid-hardening cementing material with early-strength, which can be used for rapid repair of concerte structures. In this study work, potassium-based MPC was made by 3 kinds of 1700 0C dead-burnt magnesia oxide(M) in different fineness together with in…
Low NOx combustion + SNCR technology is designed to treat the flue gas deNOx of CFB boilers.When the NOx concentration of intake gas were 280 mg/Nm3,the effluent gas were below 100 mg/Nm3.And the removal rate reached 65%.The gas quality of effluent after this treatment can reach the Emission Standard of Air Pollutants…
TiC0.81N0.48 coating and TiC0.61N0.44O0.15 coating deposited by medium temperature chemical vapor deposition,were characterized by Vickers hardness tester,X-ray diffraction(XRD) and confocal Raman spectrometer,and the effect of microstructure transformation on the hardness was investigated.Results show that the hardne…
Nanocrystalline Cu-50%Cr composite powders were prepared by high-energy ball milling.Effects of ball milling time and process control agent(PCA) on the grain size,microstructure and morphology of the composite powders were studied using X-ray diffraction(XRD),differential scanning calorimetry(DSC),scanning electron mi…
The process of Mo alloying was performed on the surface of TiNi alloys by double glow plasma surface alloying/metallurgy(DG-PSM) technology,and the cross-section and surface morphology of alloying sample were characterized by means of optical microscopy(OM),glow discharge spectrometer(GDS) and scanning electron micros…
A alkylaryl sulfonate hyperbranched polymer surfactant AAS-HBP with novel structure was synthesized through acyl chlorination and esterification with hyperbranched polymer HBP,dichlorosulfane and sodium m-carboxylbenzenesulfonate as raw materials.The structure of the product was characterized by IR and elemental analy…
The microstructure and properties of micro-arc oxidation(MAO)coatings for AZ31B Mg alloy in silicate electrolyte were investigated under the condition of DC pulsed power supply.XRD analysis showed that the oxidized coatings were composed of MgO and Mg2SiO3.A comparative study of the properties of the coatings under di…
As a kind of excellent magnetic materials,spinel ferrite can be used as microwave absorber,magnetic recording materials and other functional materials in practical application.Meanwhile,it has also good application prospect in catalyst,electronic information and biology technology fields,etc.Due to the greenhouse effe…
Calix [4] arene was synthesized by dealkylation reaction using p-tert-butylcalix [4] arene and phenol as raw material in the presence of anhydrous AlCl3.Then 5,11,17,23-four sulfo phenyl)-azo calix [4] arene was synthesized by coupling reaction using calix [4] arene and p-amino benzene sulfonic acid as raw materials.I…
The phenolic resol resins were modified by different amounts of urea in the synthesis stage.Then the modified resins were prepared to foams.The properties of modified foams were tested.The results showed that,with the increase in the amount of urea,water absorption,toughness and flame retardant property of the foam ro…
In this paper,30 % polyether benzamides spreading oil self-diffusion morphology and spreading speed on the water surface were investigated,and its film thickness and the activity of killing cercariae were evaluated.It was found that 30 % polyether benzamides spreading oil on the water surface can quickly self-diffusio…
Iron matrix composites reinforced with mixed size SiC particles were prepared by a powder metallurgy hot press resistance sintering technology.Investigation has been carried out on effect of mixed size reinforcing particles on the mechanical properties of the composites.It is found that the properties of the composite…
In order to explore the aged SBS modified asphalt recycling feasibility,The TFOT test was carried out.Recycled asphalt was obtained by adding rejuvenation agent.The routine test,fatigue test,TFOT test was carried out to recycled asphalt.The performance comparison between unaged SBS modified asphalt and recycled asphal…
The effects of three curing systems on the anti-reversion characteristics of the shoulder pad compound of tire were investigated.The results showed that,compared with conventional sulfur vulcanization system,the anti-reversion properties of the compounds with semi-efficient and equivalent vulcanization systems were im…