Materials Literature
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The degradation behavior of an Intershield 300 ENA301 organic coating on 907A steel in a simulated deep sea environment was studied in an autoclave,in comparison with that under atmospheric pressure.The results indicated that the high-pressure accelerated the degradation process of the coating.The degradation modes of…
A method for preparing ACR-g-VC resin was introduced.The synthesis process and toughening mechanisms of ACR-g-VC resin were studied.ACR-g-VC resin was a kind of special PVC resin with high impacting toughness,good comprehensive properties,and would have wide development prospects.
A four-step reaction synthesized 5-(4-nitro-1,2,5-oxadiazol-3-yl)-5H-[1,2,3]triazolo[4,5-c][1,2,5] oxadiazolium inner salt(NOTO).The first step is the oxidation of diaminofurzan(DAF) with Caro's acid giving 3,3'-diamino-4,4'-azoxyfurazan(DAAzF) in yield 88.8%.The second one is the reduction of DAAzF by Zn dust(this te…
The physical properties of Fe3Al and anti-perovskite Fe3AlH were calculated by using first-principles method.The lattice constants,elastic constants and magnetic properties of Fe3Al and Fe3AlH at ferromagnetic(FM) and paramagnetic(PM) states were obtained.The results indicate that the lattice constants at ferromagneti…
Polycrystalline zinc oxide thin films co-doped with In-N(INZO) were prepared on Si and SiO2/Si substrates by modified Ion Beam Enhanced Deposition(IBED) method.In2O3 and ZnO powders were mixed and pressed as the sputtering target.Mixing beam of argon and nitrogen ions implanted into the deposited films during sputteri…
Polymethylmethoxysiloxane(PMOS) was employed as the crosslinking agent of polydimethylsiloxane (PDMS).High-crosslinked PMOS phases were in-situ formed and the average crosslink density increased as the loading of PMOS went up.The residual mass at 500℃was 66%,the pyrolysis reaction order was 0.974 and the activation en…
The features and behaviors of Viscose,Tencel and hemp are introduced with production practice of their blended yarn analyzed and the design of technological parameters and key technical measures in production discussed.Optimal parameters arrangement of various process are used to guarantees a smooth spinning and high…
The development of new inferior superhard-superhard materials were introduced,and the reasons of high hardness,high strength of diamond were discussed from the point of ligand field theory and atomic structure,and then halo map of hard-superhard materials was supplemented and corrected,in order to guide the future res…
Through metallographic analysis,SEM spectrum analysis and nitrogen oxygen content detection methods,cause analysis of low elongation percentage onΦ40 specifications of HRB400 hot-rolled reinforcing steel are presented.Results show that high contents of oxygen,nitrogen and impurities are main reasons of low elongation…
C-shaped SiC fibers with different sectional curve were prepared,and electromagnetic parameters as well as microwave absorbing properties of those fibers were studied.C-shaped SiC fiber is electric loss material.When the sectional radian of C-shaped fibers increases,electric permittivity and loss decrease,while the fi…
OBJECTIVE To study the release rate in vitro of roxatidine acetate hydrochloride pulstile controlled-release pellets(RPCP).METHODS The effects of different dissolution methods,dissolution medium and stirring rate were investigated.The releasing mechanism and characteristics were explained,too.RESULTS The release behav…
Mulberry silk is one of the few export commodities which hold a monopoly position in China. However, silk industry fell into the bottom in the 90th of last century, and it has been gradually grew back during recent decades. After entry into WTO, the dramatic change of international trading environment for silk industr…
The thermal decomposition processes taking place in solid state NH4Al(SO4)2·12H2O were studied in Argon with TG-DTA/DTG and XRD techniques.TG-DTA curves showed that the decomposition proceeded through five well-defined steps in Argon and the mass loss of the thermal decomposition of NH4Al(SO4)2·12H2O was in good agree…
Xylanase was used to treat poplar APMP pulp to improve the pulp drainability.The effects of xylanase treatment on drainability and strength properties of poplar APMP pulp were studied.The results showed that xylanase treatment can effectively improve the drainability of poplar APMP pulp and the pulp strength propertie…
Yb_ 14 MnSb_ 11 single crystal clusters were prepared by a Sn-flux method.X-ray diffractometry,scanning electron microscopy and electron dispersive X-ray spectroscopy were used for characterizing the Yb_ 14 MnSb_ 11 single crystal clusters.Growth mechanism of the crystal clusters was discussed.Electrical transport pro…
The research progress of thermal expansion of magnesium alloys and magnesium matrix composites is introduced briefly,and the temperature,the volume fraction of reinforcement,reinforcement particle size,the shape of reinforcement particle,the kind of reinforcement particle and heat treatment and others which influence…
Using Hainan kaolin as raw material to prepare alumina powder can reduce the cost,improve the kaolin's additional value,and have significance role to Hainan economic development. Orthogonal experiment was carried out to study the influence of concentration of HCl,the temperature of acid and drygelatin calcining temper…
The advantages,anticorrosion mechanism and the research status of chlorinated polyether resins,along with their application in coatings were introduced.The application prospects of chlorinated polyether resins were forecasted.
Objective:To investigate the effect of celecoxib on the expression of GRO-α in retina of diabetic rats.Methods:Forty healthy male SD rats were divided randomly into four groups as normal control group,diabetes group(DM),diabetes+distilled water group(DM+DW),diabetes+celecoxib group(DM+C),with 10rats in each group.Diab…
The wet processing of COOLMAX/cotton moisture-management blends was described.Singeing temperature was controlled at 900℃,alkali dosage was 8～10 g/L for scouring,and 180～190 g/L for mercerizing,setting temperature prior to dyeing was 195℃,dyestuffs selected should have excellent fastness to light and perspiration,and…