Materials Literature
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This article introduces the closed-four wedges mandrel structure of recoilers mandrel in aluminum strip cold rolling mill.It analyzes the mandrels characteristics and poses a calculating method for expanding and collapsing force.
For improving the accuracy and automation level of contact angle calculation,a dynamic and static contact angle calculation software system based on MATLAB GUI(Graphical user interface) was implemented,which could calculate contact angle manually or automatically.Of the automatic mode,the level set method was used to…
Dense and highly ordered Titania nanotube(TiNT) arrays were fabricated by electrochemical anodic oxidation.Then,the Fe nanoparticles were deposited on the surface of TiNT by both direct-current magnetic sputtering and electron beam irradiation processes separately to improve their opto-electronic performance.The surfa…
The mechanism and research progress in the toughening of thermosetting resins(including epoxy,phenolic,cyanate ester,and bismaleimide resins) using liquid carboxyl terminated butadiene nitrile rubber(CTBN) were reviewed.The present problems under study were pointed out and the study direction of CTBN toughening of the…
Based on the pollution characteristics of vaporizing materials in oil-contaminated field,coarse sand,fine sand and loam were collected and loaded in columns respectively firstly.Then diesel oil was spilled on porous media surface.The mass loss of oil was determined by weighing the column before and after oil volatiliz…
A novel 3-oxa-pentamethylene bridged dinuclear C1-ansa-titanocene(Ⅷ) was synthesized by treating two equivalents TiCl4(THF)2 with the corresponding tetralithium salts of the ligand which were prepared by the nucleophilic addition of sodium cyclopentadienide with 2,2′-di(3-hexylidenyl cyclopenta-1,4-dienyl)ether.After…
The deterioration process of iron oxide red alkyd primer/carbon steel electrode subjected to dry-wet cycles of 30 times in 3.5% NaCl solution was investigated by means of electrochemical impedance spectroscopy.Four models of equivalent circuit of coating deterioration at different stages were established,and the varia…
Objective To present the preparation of chemical-bond doxorubicin-loaded pH-sensitive amphiphilic copolymer micelles using dialysis method based on the synthesis of amphiphilic graft copolymer butyryl-carboxymethyl-chitosan(BR-CM-CS).Methods The critical micelle concentration(CMC)was measured by pyrene fluorescent pro…
The dynamic mechanics and phase separation behavior of epoxy with shape memory modified by fluorinated poly(ether ether ketone) terminated with —OH(6F-PEEK) was characterized by DMA and SEM respectively.DMA result shows that there are two glass transition temperatures in this material.The cured epoxy phase showing hig…
High-silicon Mg-9Al-6Si aluminum alloy prepared by conventional casting was homogenized,and then treated by one-pass forward extrusion and eight-pass reciprocating extrusion,respectively.The effects of different extrusion techniques on microstructure and compression property were investigated.The results show that for…
Progress of nanocomposite of polyurethane(PU)/polyacrylate(PA)/montmorillonite(MMT) in recent years was illustrated,which included the purification and organic modification of MMT,molecular design of PA,structural analysis of MMT composite,preparation of PA/MMT compound emulsion and preparation of waterborne PU/PA/MMT…
This paper generalizes the detection analysis of SF6 decomposition products,and discusses the influencing factors in comparing,calibrating and measuring the detected devices.The attention value of the decomposition product content for identifying equipment fault is also analyzed.
This paper introduced the design and development of medical bandagesbased on multiply composites knitting fabrics with the bamboo fiber.The improvment of characteristics,dyeing and finishing and shaped processing were studied such as antibacterial,stitch structure,extensibility,comfortable and appearance of the dressi…
To get the aromatic nano-particles used in aromatic fibers,the supercritical CO2 assisted atomization(SAA) was used in the micronization of the chitosan blended with the lavender essential oil.The effect of various operating conditions,such as materials ratio,pre-expansion pressure,pre-expansion temperature and the fl…
Ba2Ti9O20 main phase was prepared using BaCO3 and TiO2 powders as raw materials by solid state reaction method.In order to reduce the sintering temperature of Ba2Ti9O20 ceramic,liquid phase coating process was used to dope B2O3 using H3BO3 solution as precusor.The effects of B2O3 doping on the sintering and dielectric…
cyanate ester was a kind of new polymer materials used in the laminate in recent years,which has well heat resistance,low dielectronic constant and low dielectronic loss and good moisture and heat resistance.Tish paper reviewed the progress of improving toughness and toughing mechanism of cyanate ester which was used…
In order to improve the surface hardness and wear resistance of the Zn-Al alloy mold manufactured by arc spraying,the electroplating treatment needs to be applied on the surface of the Zn-Al alloy.And thus,the copper layer was prepared by electroplating on the mold surface.The pores and inclusions in both Zn-Al alloy…
By using CuSO4·5H2O as raw materials,the micro size of copper powders were prepared by pre-reduction method using glucose in the ethylene glycol medium,and the micro silver type of copper-coated powders were directly obtained through replacement reaction method.By means of experiment of conductivity,and analysis of th…
The approach to improving surface corrosion resistance of 6063 aluminum alloy was studied,and the mechanism of surface corrosion resistance was discussed in theory.The results indicate that reasonable chemical composition is of advantage to corrosion resistance,its property is better as Mg,Si mass ratio at about 1.55.…
The crystallization metastable zone width of pure xylitol solution and xylitol solution containing sorbitol or glucose was determined by laser light scattering method. The effects of super saturation and additives on crystal growth rate at different crystallization temperatures were studied. The results showed that cr…