Materials Literature
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Acid-soluble collagen(ASC) and pepsin-soluble collagen(PSC) from the skin of crocodile(Crocodylus) were prepared and comparatively characterized.Both collagens displayed a distinct absorption peak at 232 nm in their UV absorption spectra.SDS-PAGE analysis showed that the peptide chain composition of ASC and PSC reveal…
Sulfuryl chloride solution and electrolyte tetrachlorodibenzo aluminum lithium bought from the markets are of high content of moisture and impurities.As a result,its discharge performance is lower than expected.A method on improving the preparation process was introduce in this paper.Firstly,the sulfuryl chloride solu…
This article introduces a study of cationic nanometer composite emulsion which contains cationic adhesives,cationic formaldehydeless crosslinking agent,cationic surfactant,silver nanoparticles,etc.and its functional finishing technology for fabric.It has revealed that the finished fabric has good anti-microbial and ul…
The combustion characteristics of a gasoline direct injection(GDI) engine with exhaust gas trap(EGT) were studied.The results show that the engine cyclic variation increases with adding negative valve overlap(NVO) angle;this can be overcome by advancing properly ignition timing to stabilize combustion.The flame propag…
Chemical reduction of exfoliated graphite oxide has been considered as one attractive potential approach for large-scale production of graphene nanosheets,and its exfoliation step has a major influence on the quality of product.In this paper,alternating electric field was used to exfoliate graphite oxide into graphene…
Sealing quality directly affects the service life of the anode anodic oxidation coatings.For the anodic oxidation coatings intended for exterior buildings,the phosphoric/chromic acid immersion with prior nitric acid treatment test method is specified as arbitration method in european standard.The effect of the prior n…
The non-contact electric eddy current displacement sensor system was applied to real-time monitor the preform thickness change throughout the vacuum assisted resin infusion(VARI) process.The compaction behavior of the preform during the VARI process was discussed.And the effect of the post-filling time on the preform…
Four types of different alloy composition are obtained,adding the fourth element Ni,to improve the formability of Cu-Zr-Ti alloy.The amorphous samples of quaternary of Cu-Zr-Ti-Ni are prepared by rapid quenching.The experimental results indicate: The addition of element Ni enhances the amorphous formability of the Cu-…
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…