Materials Literature
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A porous tussah silk fibroin scaffold was prepared by freeze drying.The relationship between tussah silk fibroin concentration and pore size and porosity was analyzed.The drug release performance of the scaffold with 5-FU was also investigated.It was shown that the scaffold possessed even pore distribution,large pore…
A series of waterborne acrylic resins were synthesized by using E10p(glycidylester of versatic acid),acrylic monomers,and applied to coil coatings.It was of benefit to the resin stability and film performance,when E10p was charged into the system with the mixed monomers togeter.It was found that E10p dosage would affe…
C/C-SiC composites have many advantages,such as low weight,high Young's modulus,high thermal conductivity,low coefficient of thermal expansion,high reliability,and good thermal stability,therefore they are excellent hot structure materials.Reaction bonding procedures,including coating protection of C fiber,optimizatio…
The Na-Al-H complex hydride was prepared by reactive ball milling (NaH/Al+CeCl 3 ) and (NaH/ Al+CeCl 3 /yKH) (y=0.02, 0.04) composites under a hydrogen pressure of 3 MPa at room temperature, using NaH and Al powder as raw materials, as well as 2% (molar fraction, x) CeCl 3 and 2% CeCl 3 /yKH (y=0.02, 0.04) as dopant,…
N-[(2-hydroxy-3-trimethylammonium) propyl] chloride chitosan(HTCC) was synthesized successfully with 2,3-epoxypropyl trimethyl ammonium chloride(EPTAC) as a modifier,which had good water-solubility.The chemical structure of HTCC was characterized by FT-IR and 1H NMR.The antifungal activities of HTCC were examined agai…
Bonding between tungsten and 0Cr13 steel using a 90W-6Mn-4Ni(mass fraction) powder mixtures/Ni multi-interlayer,was carried out in vacuum at 1 100 ℃ for 10 min,30 min,60 min,120 min with 5 MPa.The microstructures,composition distribution and fracture characteristics of the joints are studied by scanning electron micro…
Ball milling-liquid phase oxidation method was adopted to obtain the surface modified short carbon fibers(SCF).The modified SCFs with different dimensions are used to fabricate the short carbon fiber/epoxy resin composites(SCF/EP) by extrusion process.The surface morphology and wettability of the modified SCFs are cha…
The development of the clothing equipment automation process is introduced in this paper.It has developed from a purely hand-made equipment,mechanical equipment,electric equipment to automation equipment;and the early exclusive-function sewing equipment also evolved into multi-function production equipment.Finally,the…
Many industrial processes,such as organic chemistry industry,print industry,and paint spraying,emit organic waste gas,which has polluted atmospheric environment.The mechanisms,characteristics,and applications of various treatment technologies for organic waste gas are introduced.
Objective To investigate the clinical value for electrocardiogram(ECG)monitoring in potassium supplementing of patients with hypokalemic periodic paralysis(HOPP).Methods 87 patients of HOPP in our office were divided into two groups:experiment group(50 cases)and control group(37 cases).The experiment group accepted EC…
This paper investigated the properties of ZnO∶H thin films.We found that hydrogen played an important role on structural and properties of ZnO∶H thin films.With the changing of H2 flow ratio,the effects of H doping manifested as passivating vacancy defects,shallow donor doping and etching action.When the H2 flow ratio…
A kind of polyurethane(PU) prepolymer was synthesized by isophorone diisocyanate(IPDI) and polytetramethylene ether glycol(PTMG).Together with epoxy resin E44,the PU prepolymer was used to synthesis a modified epoxy resin which was solidified by methyl-hexahydro-benzoic-anhydride(MeHHPA) and self-made DBU p-toluenesul…
Aiming to rolls working layer extensive spalling of centrifugal composite high chromium cast iron rolls during the heat treatment, metallographic examination and chemical analysis were carried out. And then the effective improvement measures were put forward and used successfully. Good practice effects were achieved.
In order to improve electrochromic property of tungsten oxide(WO3) thin film,PEG-doping WO3 films were prepared by peroxopolytungstic acid sol-gel method.The effect of annealing temperature on microstructure and electrochromic properties of the PEG-doping WO3 films was investigated.X-ray diffraction(XRD),transmission…
Permeation is an important step in the technological process of cooking silkworm cocoons. Permeation uniformity of cocoon layers is directly related to the output and quality of reeled silk. In present study,a fluorocarbon surfactant named FCL-41 was added in the process of cocoon cooking to improve the permeation uni…
The polyaniline(PANI)-modified 312 stainless steel electrode was successfully fabricated through electrochemical polymerization of aniline on the stainless steel electrode and its anticorrosive property was investigated by polarization curve measurements,time-dependent analysis and electrochemical impedance spectrosco…
For the purpose of understanding the quaternary Fe-rich phases of hypereutectic Al-Si alloy,Al-22Si-3Fe-1.8Mn alloy was studied by X-ray diffraction,scanning electron microscopy(with EDS) and optical microscopy.The results show that there are three quaternary Fe-rich phases and the crystal structure of them is consist…
In order to study the effect of La2O3on joint microstructure and mechanical properties,tungsten insert gas( TIG) welding of MGH956 alloy was performed without La2O3and with 2%,4% La2O3as filler materials respectively. The joint microstructure and fracture surfaces were analyzed by testing method such as optical micros…
Modified isocyanate adhesive was used to prepare wheat straw particleboard,the influence of resin content and density on the physical and mechanical properties and thermal stability was studied.The thermal stability and the feature of glued joint section of wheat straw particleboard were analyzed by scanning electron…
The processing technology of nitrite-free sausages fermented by Lactobacillus plantarum at lower temperature was studied using fresh meat as raw material.Based on the single factor experiments,the effects of inoculum,fermentation temperature and time on the sensory quality of sausage fermented by L.plantarumwere inves…