Advanced Materials Research Vols. 779-780

Abstract: Following during development of electric vehicles and other modern-life appliances, numerous lithium-ion batteries are fabricated and used every year, and their consumption is constantly expanding. However, the battery life of the lithium-ion batteries is about 3 to 5 years, and there are some hazardous and noxious substances in spent lithium-ion batteries. Therefore, it is necessary to recycling these spent batteries with some resourceful and environment friendly technology. In this work, we propose a novel technology of resourceful disposing and utilizing oxide cathode materials from spent power lithium-ion batteries, which is using the recovered compounds from spent lithium-ion batteries to capture carbon dioxide from fossil fuel plant. The detailed technical routes of laboratory scale test and bench scale test are also given in the work.

Abstract: The calcium aluminates carbonates are prepared as mediumhigh temperature CO₂ sorbents. The sorbent exhibited excellent performance with 53 wt% capacity and 99% stability in TGA test for 15 h. However, using the sorbent in a fixed-bed reactor, it was found that the stability rapidly decreased to about 35% after 10 cycles. Hence, development of regeneration methods for reusing this spent sorbents is critical to economic consideration toward CO₂ capture technology. The calcium aluminates carbonates sorbent makes up layered structure including cations formation (Ca²⁺, Al³⁺) and lamella anions (CO₃^2-, OH), which can be re-constructed under aqueous conditions. Aqueous hydrolysis provides an efficient route to reactive sorbent. The results showed that CO₂ capacity could be recovered to around 50 wt% with 98% stability in TGA test for 15 h for spent sorbents. The reactive mechanism of sorbent is worthy to further discussing.

Abstract: This paper describes the development trend of new textile material, which is elaborated with the example of PLA fibre to illustrate the advantage of synthetic fibre. Additionally, the application of compounding technology in clothing is briefly introduced.

Abstract: Like lotus leaf and rose petal, the canna leaf also has excellent super hydrophobicity.The purpose of this paper is to systematically study the super hydrophilicity of canna leaf. Using SEM to observe the morphology of the canna leaf, and analytical balance to measure the adhensive force between water droplet and the leaf . This paper shows that the first type of the canna leaf which has co-exsitence of the nanocrumb and micro-scale convex cells has the high contact angle and low contact angle hysteresis similar to lotus leaf. The another type on the leaf has high contact angle but high adhesion in a certain extent like the rose petal effect, whose microstructure unitarily simple has the micro convex cells, do not distributed anything of nanoscale.

Abstract: This paper analyzes factors that affect the goodness of windows, establish a comprehensive evaluation attribute system, which includes five aspects: economical, energy-saving, environmental, healthy and comfort, safety. Puts forward a new weighting method by combining entropy weight and gray relational analysis, which considers both quantitative and qualitative analysis; and then, establishes a model of weighted TOPSIS to rank objectives being evaluated.Case study shown that this method is effective and reasonable in energy-saving window material comprehensive evaluation, provides support for multi-attribute decision making.

Abstract: The metal corrosion of ballast tank caused by ships ballast water that has been electrolysed has been studied in the laboratory by means of statically immersing metal sample in treated sea water. Experimental tests show that the corrosion rate in the electrolyzed seawater is larger than that in the natural seawater, but the increment of the corrosion rate is not more than 35% in the first 12 hours in the medium with a 5 mg/L initial chlorine concentration and the corrosion rate will decrease with time.

Abstract: Effects of casting temperature and RE refiner on microstructure of the hollow Al-Zn-Mg-Cu alloy drive shaft prepared by squeeze casting ( in express locomotive) were investigated in this paper. As the casting temperature increase from 720°C up to 780°C, the average grain size of the α-A1 primary grains increased from 32μm up to 51μm, and the average equivalent roundness changed irregularly. Meanwhile the variation range was not big and the roundness value ranged from 0.63 to 0.72. With the casting temperature up to 780°C, the average equivalent roundness was 0.71. When the refiner was adopted, the average grain size of the alloy decreased obviously. However, no obvious change was detected in the average equivalent roundness, which ranged from 0.73 to 0.78. With the refiner of 3wt% Al-10RE, the average grain size of the alloy and the average equivalent roundness were 35μm and 0.77, respectively.

Abstract: For running deviation of strip and camber deviation, a tension model was established on the discussion of the dynamic equilibrium state under tension. The friction difference of strips sides or workpiece wedge causes plain rolling camber, meanwhile housings elasticity inequality or roll tilt leads to axial shifting and camber deviation. In the digital simulation, the tension-drawing model is necessary to realize tension self-adjusting, and in the production, tension increments can be calculated for adjusting the two sides gaps.

Abstract: High Performance Ferrocement Laminate (HPFL) is a new strengthening structure method which needs to imbed the shear dowel on the strengthened material in order to ensure the associated work effect of high performance ferrocement laminate and the original structural member. This paper introduces the measures and examples of high performance ferrocement laminate. The way has the characteristic of good effect, low cost and simple construction methods, and it is suitable for the vast areas which need resisting earthquake.

Abstract: The V₂O₃ is used as raw material to smelt FeV80 alloy by means of electric aluminothermic process in the vanadium products factory of PanGang, resulting in serious corrosion of magnesia lining. In order to analyze the above issues, some lining samples were taken from the locations where the refractory contacts with molten slag after furnace cooling, and processed to conduct SEM analysis. The research results showed that the slag corrosion of magnesia lining proceeds mainly in form of dissolution, The solubility of MgO in molten slag increases from 3.3% to 41% with the increase of smelting temperature from 1900°C to 2200°C based on the phase diagram analysis. The corrosion rate of magnesia lining at temperature 2000°C, 2100°C, 2200°C are about 13, 22 and 33 times than that at temperature 1900°C, respectively. Therefore，to control the ferrovanadium processing temperature below 2000°C is conducive to prolong the service time of magnesia lining.