Papers by Keyword: Aluminum Foil

Abstract: Metal aluminum surface can be corroded easily in acid and alkaline environment. Inspired by the self-cleaning lotus leaf, the development of superhydrophobic metal surfaces to prevent metals from corroding is enjoying tremendous popularity amongst scientists and engineers. In this work, superhydrophobic surface was obtained on aluminum foils via a facile neutral sol solution immersion process and post-modification in ethanol solution of heptadecafluoro-1,1,2,2-tetradecyl trimethoxysilane (FAS-17) solution through a hydrothermal synthesis technique. Scanning electron microscopy (SEM), X-ray diffraction (XRD) and water contact angle measurement are used to investigate the morphologies, microstructures, chemical compositions and wettability of the produced films on aluminum substrates. The results indicated that the superhydrophobic surface, configured of a rough labyrinth structure with convexity and notch, has robust hydrophobility, which had a static water contact angle of 165.6 ± 2.8° and a water roll-off angle of <1°, exhibited long-term durability and stability in air. The present research work provides a new strategy for the simple preparation superhydrophobic films on aluminum foil for practical industrial applications.

Abstract: To investigate pinholes in 8079 Aluminum foil, optical microscopy and scanning electron microscope with energy dispersive spectrometer were adopted. Results show that four types of pinholes in 8079 aluminum foil, (1) small size, rod-shaped, (2) pinhole in groove, (3) hole with big size, (4) crumpled pinholes. Big compounds along with all rolling and heat treatment processes cause the small rod-shaped pinhole. The big compound contains elements of Al-Fe-O.

Abstract: In order to realize the adhesion between low-density polyethylene film and aluminium foil. Several nanofibre arrays were fabricated on low-density polyethylene film by template method to imitate strong adhesive nanohairs on the feet of gecko lizards. The results showed that the nanofiber arrays greatly improved the peel stength between low-density polyethylene film and aluminium foil and met the actual requirement. The peel strength increased with the decrease of the adjacent distance of the nanofibre arrays. when the distance and height of nanofibre kept unchangable, the peel strength increased with the deccrease of the diameter of the nanofire when the diameter is larger than 500nm. The peel strength decreased with the deccrease of the diameter of the nanofibres when the diameters were smaller than 500nm. The peel strength increased with the increase of the height of the nanofibres when the heights of nanofibres were lower than 5μm. When the heights of nanofibres were higher than 5μm, the peel strength decreased with the increase of the heights of nanofibre arrays.

Abstract: The direct evaporative cooling conditioner experimental research is carried out in this paper. Analyze the influence of inlet air dry ball temperature and relative humidity to air conditioner cooling capacity and cooling efficiency, which has certain guiding significance to improve the direct evaporative cooling air conditioner performance.

Abstract: Existing household aluminum foil roll machine-controlled cutting machine, finished product rate is low，raw materials waste. To improve product quality, we have the original equipment, based on the design transformation, to reach the job performance requirements.

Abstract: In packaging market, Vacuum Plate of Aluminum by UV offset printing is light impediment effectively, moisture-proof, and forgery-proof and reaches the request of the green packaging production. Thus, the packaging of Vacuum Plate of Aluminum is used widely. This study was a true experimental research. The test form employed was the printing quality control strip from international printing specification. It was used to record and analyze the color variance between Vacuum Plate of Aluminum and Aluminum Foil with white board and no white board using UV Offset Printing. The study indicated the comparison of Tone Value Increased & the difference of Color Gamut Range among these three packaging materials via C, M, Y, K four colors tone value and RGB area testing, and results reveals that the tone value on the Vacuum Plate of Aluminum with white board increased most among these three materials; the dot gain percentage of the Vacuum Plate of Aluminum is less than 15% which with the highest stability than others. All signature findings are given in Fig.1 and Fig.2. These results are entirely consistent with research hypotheses.

Abstract: First,this document explains the characters about Aluminum and its alloy materials in light without heat absorption,the fast heat condution and so on. Second,the doucument demonstrates that Aluminum and its alloy materials have been applied in the roofs, windows and doors,floor strata,the walls etc..Last, based on aluminum and its alloy materials in energy-saving advantages, the engineers should take them into account in architectural design,construction and maintenance.

Abstract: Capacitor bushings are one of the key components in power transformers. Although their price is a negligible part of the total price of the power transformer, their quality has a significant effect on performance and reliability of power transformers. In high voltage capacitor bushings, the intensity of voltage and electric field on bushing abacus is very high. This high intensity is also observed in flange parts. The amount of multi layer insulator among the electrodes or floating plates in capacitor bushing make equi-potential surfaces and reduction of electric field in these areas can greatly improve the capacitor bushing performance. In this paper, we investigate the reduction of field intensity and electrical tension and also improvement in voltage control by displacing floating plates which are in the form of aluminum foils stick to impregnated paper. To calculate the field intensity, we used the MAXWELL software using FEM (Finite element method). Using this new method of placing capacitor core its effect on voltage profile reduction and field electrical tension is shown. Over voltage and pollution effects are also investigate on power transformer bushings.

Abstract: Two identical zigzag-shapes and an aluminum zigzag shape foil were combined as a slice testing piece. Each of the pieces was connected with AC. 110 V and AC. 12 V. The result indicated that the piece, whose tooth was 10mm wide with intervals of 15 mm, displayed an electromagnetic shielding effectiveness (EMSE) of 30 mG with the load current of AC. 110 V. The EMSE of another piece, whose teeth wide was 5 mm with intervals of 10 mm, was 20 mG in the load current of AC. 12 V. This result proved that samples were with EMSE under the alternating current.

Abstract: A new TiCN-coated aluminum foil for capacitor was prepared by multi-arc ion plating method. The effects of cooling process and mass flow ratio of C2H2 to N2 for deposition on specific capacitance were investigated. Using SEM and XRD, the surface micrograph and phase transformation were analyzed and the temperature sensitivity of specific capacitance was discussed. The results show that specific capacitance of TiCN-coated aluminum foils was as high as 1600μF/cm2, which is higher than the traditional etching process increases by about 2-fold. It was found that composite foil has a strong temperature sensitivity, with the temperature increasing, the aluminum foil surface of TiCN particles were found a gradual trend of growing up, crystal structure from amorphous to crystalline transition, when the temperature was higher than 200°C, the specific capacitance decreased more quickly.