Materials Literature
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A point of view that the carbon fiber has composite structure is proposed.The relationship between the practical elasticity coefficient of carbon fiber and the crystallinity,micro-fiber orientation and pore conditions was researched based on the micro mechanics theory for mechanical properties of composite materials,t…
Zinc coatings were mechanically deposited from the electrolyte solution containing nano-TiO2 particles.Microstructure of the coatings was studied by means of scanning electron microscopy(SEM),energy-dispersive X-ray spectrosmeter(EDS)and X-ray diffraction(XRD).The density of the coatings was measured and the corrosion…
This paper introduces the main reasons for Ti based metal oxide anodes' degradation including dissolution and desquamation of coating,passivation of Ti substrate,poisoningof coating,mechanical damage,unreasonable working conditions and so on.According to the recent measures taken by domestic and international research…
Sulfate-reducing bacteria (SRB) which can withstand a certain dissolved oxygen is not strictly anaerobic. However, the study of corrosion by SRB bacteria in the aerobic condition is still limited. In this study, corrosion behaviors of Q235 carbon steel in SRB’s aerobic seawater were studied by the electrochemical impe…
The polyester(PET) draw textured yarn(DTY) has a complex end-use from different weaving machines.The influences of physical properties,apperance properties and dyeabilities of DTY on weaving and parameters adjustment are investigated.
This article compared and analyzed some test results of X70 SAWH pipe with different alloy content design,such as chemical composition,tensile test,impact test,DWTT and etc.The results indicated that the effect of Mo on pipeline steel strength is great,while the effect of Mo on toughness is not great.The properties of…
Based on the ring rolling theory and the principle of invariable volume during the rolling process,the design principle of flange blanks and the limit scope of process parameters were determined for producing high neck flanges.The closed ring rolling process of the flange blanks was simulated by a finite element model…
This paper introduces in details a new kind of summer cool quilts characteristic of moisture absorbable,breathable and antibiotic,and made of Outlast acrylic fiber,bamboo pulp fiber and moisture absorbable and breathable polyester fiber and designed in special structure.Concrete technical points in the production of t…
The cold-rolled polycrystalline molybdenum strip was laser shocked by the Thales laser with the maximum output laser pulse energy of 12.5 J,and the microhardness and microstructure of shocked specimens were analyzed.The results show that laser shock at high strain rate can achieve a double effect of forming and modifi…
A novel photo-Fenton-like(PFL) system using a Keggin-type iron-substituted heteropoly anion PW11O 39 Fe(Ⅲ)(H2O) 4[PW11Fe(Ⅲ)(H2O) ] as photocatalyst was employed to the photocatalyt ic degradation of dimethylphthalate(DMP).The experimental results showed that a complete DMP degradation and a 43% total organic carbon(TO…
Experiment adopt enzyme method to produce the chitosan,which taking the raw material of aspergillus niger.We measures the value number of degree of deacetylation,viscosity,yield with difference condition via experiment many times,thus make sure the best experiment condition.Compare with the reaction in the microwave m…
Oleic acid,formic acid and peroxide were used to synthesize epoxidized oleic acid,afterward,epoxidized calcium(zinc) oleate were synthesized by double decomposition reaction.The products were used as thermal stabilizers in PVC.Investigation of thermal stability of epoxidized calcium(zinc) oleate was investigated by me…
The process,equipment,raw materials and the operating procedure for the preparation of a water-in-water emulsion retention aid and its application were introduced.The results show that this retention aid has the advantage of high retention rate,low cost and worth of popularization.
The paper introduces and analyzes domestic titanium concentrate and utilization status,titanium and titanium alloy smelting(ingot casting) and processing situation,thus proposes contermeasures of accelerating the development of titanium and titanium alloy industry in Qinghai province,firstly compiling Qinghai province…
In this paper we report on the structural,magnetic and magnetocaloric properties of the first-order phase transition materialMn1.3Fe0.7-xVxP0.45Si0.55(x=0,0.05,0.1,0.15).The XRD results show that the compounds crystallize in the Fe2P-type hexagonal structure with space group of P-62m.The lattice constants and unit cel…
Object To prepare the endotoxin adsorption materials by using Poly(vinyl alcohol)(PVA) as the carrier and different Amines as affinity ligands and then proceed to evaluate their adsorption capability and blood compatibility.Method PVA was graft-polymerized respectively by ethylendiamine(PN-1),hexane diamine(PN-2),trie…
The pretreatment process of the carrier of Cu/SiO2 catalyst for hydrogenation of nitrobenzene to aniline and the influence of process conditions on pore structure of silica gel were investigated.The catalytic activity of Cu/SiO2 catalysts prepared by using pretreated and unpretreated carriers was evaluated.The results…
In this article,mechanical properties of a new type of foam-core sandwich composites are studied.The core was made by inserting thin-walled circular tubes into a PU foam,resulting in a significant reinforcement in its Z-directional properties.The sandwich composites were further fabricated by using FRP(fiber reinforce…
Lab experiments show that the appropriate algorithm of DOA(Direction Of Arrival) estimation is the key of transformer PD(Partial Discharge) detection by ultrasonic array sensors.A modified FastDOA algorithm is proposed for transformer PD orientation with ultrasonic array signals,which adds an expansion coefficient to…
Objective: To investigate the tissue distribution,pharmacokinetics and antitumor effects of rsTRAIL in animals.Methods: Radioisotope tracer labeling combined with trichloroacetic acid precipitation method was used to study the tissue distribution and excretion of rsTRAIL in nude mice.ELISA was used to determine the se…