Advanced Materials Research Vols. 750-752

Abstract: Multifractal spectrums of sinter with different alkalinity were analyzed by multifractal software. The results show that sinter pore structure change from uniform to non-uniform with the improvement of alkalinity, Δα increases from 0.53 to 0.55. The structure of sinter pore is mainly microscopic by competition between macropores and micropores, Δf changes from 0.14 to-0.44. The distribution of sinter pores is quantitatively characterized by multi-fractal spectrum, which is consistent with transmission electron microscopy image.

Abstract: Thermal transport process in copper film was numerically simulated with Two-Temperature Model, in which finite difference method was used, and the result shown the temperature change process in electron-lattice system. Some parameters were changed to carry on further simulation. The affect of film thickness on the electronic relaxation time was analyzed. The affect of pump laser beam power on the electron temperature rise was discussed. The influence of electron-lattice coupling factor G on non-equilibrium thermal process was shown in simulations.

Abstract: In this paper, surface plasmon polaritions (SPPs) induced by a tightly focused and radially polarized vortex beam on a planar metal/dielectric interface is simulated and the properties of the SPPs self-interference are studied. It is shown that utilizing vortex beam can avoid the influence of the central zero-order angular spectrum. Besides, the impacts of various factors as different topological charge, substrates parameters and metallic film material on the generation of SPPs interference pattern are compared and analyzed.

Abstract: The surface tension of water in high magnetic fields up to 10T was investigated with aid of the high-magnetic-field tensiometer (HMFT). It was found that the surface tension of water linearly varied with the magnetic field intensity and increased by 0.48mN/m or 0.65% in 10T. The increase of the surface tension of water could be attributed to the increase in the number and stabilization of the hydrogen bonds in the magnetic field.

Abstract: This paper reveals the relationship between the changes of active functional groups in coal and gaseous products. Intelligent coal heating and oxidation trial furnace and GC-4085 series gas chromatograph are used for heating and gas analyzing, then use Fourier-transform infrared spectrophotometer instrument (FTIR) tests the reactive functional groups of coal under different temperatures. Analyzing result shows that: alkane side chains of aliphatic react in the whole process of heating and oxidation. -CH₂-, -CH₂-CH₂- and other bridged linkages crack into free radical groups when they are heated. CO, CO₂ and alkane gases are formed in the reaction. At about 110°C, ethane gas appears; stretching vibration of aromatics, carbonyl acid in the plane and unsaturated hydrocarbon key in aromatic hydrocarbon are relatively stable, which start to react after 140°C with very small amounts of ethylene and propylene gases produced. CO, CO₂ and alkane gases, which are produced by the reaction that peripheral side chains of coal adsorb surface complexes and the gases break away from the coal, are important parts for CO, CO₂ and alkane, etc. to generate in low temperature.

Abstract: This study presents a determination procedure of optimal shot-peening process conditions, wave profiles and thickness in order to precisely control and improve durability and fatigue life of wave cushion springs assembled into automobile automatic transmission clutch. For this shot-peening process, residual stress analysis was applied under various conditions. Experimental works were conducted to evaluate proposed approach by using X-ray diffraction residual stress measurement tester. It could be expected that this study provided guideline for wave spring optimal design and improving fatigue life.

Abstract: With the steps of the society moving forward, with the improvement of technology, with the residents material life becoming richer and richer, people start to pay more attention to enrich their spiritual life, rather than treat the jewelry simply as the symbol of wealth, moreover they are going to make it a way to show their personalities. Material mix-match, as one of the most important way of design, is also usually used in the field of jewelry design. Sequentially brings the new light spot for jewelry design on both visual and implicational hierarchies, and promotes the quality of jewelry. Thus human beings start to use material mix-match to define themselves. After many years of study of design, the authors gradually summarized the regular patterns/features/procedures of material mix-match for jewelry design.

Abstract: High-count cashmere is the inevitable requirement of the high-end yarn cashmere products.To the short of the high-count cashmere yarn production and the difficult of spinning,From raw material selection, technological process, equipment transformation, parameter optimization, temperature and humidity control and other aspects,we analysised the high-ount cashmere yarn production process and quality control system,The development of the woolen 48Nm cashmere yarn has been done,it is of first class.

Abstract: Lotus fiber is served as a novel kind of slender, soft and fragrant natural cellulose fiber which own perfect moisture absorption, good ventilation and culture meaning. However, current extraction approaches of lotus fiber usually exhibit low efficiency and high cost which limit its development and utilization. In this paper, based on the biological structure of lotus petiole, the steam explosion method is carried on for lotus fiber extraction from the separated vascular bundles. The morphologies of the samples exploded in different conditions of prepreg conditions, explosion pressure and residence times were sequentially characterized by SEM. The results show that the resulting lotus fiber is separated efficient while, under 5% sodium hydroxide prepreg conditions, the pressure is 1.5 MPa and residence time at 160 s. Therefore, this kind of steam explosion treatment can be proposed as the reasonable method for lotus fiber extraction. The present study can provide preliminary basis for the high efficiency production of lotus fiber through physical and mechanical method.

Abstract: Through the analysis of the structure and properties of camel wool, this paper has a more thorough understanding of camel wool and discusses the structure is how to influence on the properties, from the length, strength, fineness, crimp, fulling, moisture absorption, etc. There is very important significance on the application performance and product quality.