Advanced Materials Research Vol. 977

Abstract: In this paper, a kind of fibrous TiO₂ has been prepared through hydrothermal synthesis and a paper fabricated from the fibrous TiO₂ has been obtained. The composition, morphology, and size of the fibrous TiO₂ were characterized by using X-ray diffraction (XRD) and scanning electron microscope (SEM) respectively. And the morphology of the paper was characterized by polarizing microscope. The thickness, softness, and writing properties of the paper were detected by a vernier caliper and a pen. The results indicate that the diameter of the fibrous TiO₂ is ~ 200 nm, the thickness of the fabricated paper is ~ 0.35 mm, and the paper can be tolerated writing by a UM-100 ball pen. The excellent properties of the prepared paper may change the applications of fibrous TiO₂ in papermaking industry.

Abstract: Contaminated soils in the environment remain being a significant issue during land application. Numerous methods have been suggested in recent years for remove, treating and beneficial uses of heavy metal-containing soils. In this research, the basic characteristics and the geochemistry of metals in the soils were studied, and which were subjected to percolation test. The results of experimental leaching tests of soils are subjected to model calculations. In addition, the separation processes, hydrocyclone treatment, is designed to separate coarse and fine-grained particles by high settling velocity of particles. The FLUENT flow simulations are help to demonstrate to liquid-solid flow and the simulation results are feedback to the hydrocyclone operation and design.

Abstract: In this study, the effect of scrap ratio on the mechanical and corrosion properties of Zr-1Nb-0.7Sn-0.1Fe alloy was studied. Oxygen content in the ingot cake increased rapidly with increasing fraction of scrap, which can be attributed to the surface oxide of scrap cake made of small pieces of turning, chips, etc. Iron content was not changed much, suggesting scrap materials was well reserved in the iron-free container. As-cast structure of Zr-1Nb-0.7Sn-0.1Fe alloy with the scrap:sponge ratio displayed basket-weave α phase and no appreciable change of the cast structure was observed with change of scrap fraction. The strength increases with increasing fraction of scrap, which can be attributed to the increase of oxygen content. The ductility decreased slightly with increase of scrap fraction. The increase of oxidation resistance with increasing fraction of scrap also can be linked to the increase of oxygen content.

Abstract: In order to investigate the possible effect of the scrap inclusions in recycling, microstructure and deformability of Zr-Nb based alloys cast with the addition of iron and iron oxide were studied. No visible iron oxide inclusions were observed in the arc-melted cake, suggesting that Zr and Fe₂O₃ reacted completely to dissociate Fe₂O₃ into Fe and O in the Zr. No oxide peaks were observed by XRD analyses. In Zr-Nb alloy melted with iron oxide, the oxygen content reached up to 3150 ppm. Zr-1.2 Nb alloys with high oxygen contents exhibited needle-shaped α phase. and the the thickness of needles decreased. In Zr-1.2Nb alloys with over 2000 ppm they are brittle and cracked during rolling process. In some region of the fracture surface brittle fracture feature such as vein-like pattern was observed. In the fractograph, no brittle second phase particles were observed. EDS spectra. It is apparent that Zr-Nb alloys with the addition of iron oxide during the handling of scrap materials exhibit the extremely brittle behavior.

Abstract: High styrene is the copolymer of high content styrene and butadiene, non polar polymers. It performances flexibility and elasticity at high temperature, can mold process. It has better compatibility with natural rubber. In the role of sulfur vulcanizing agent, can produce vulcanization, realize crossing. Tennis prepared by optimization formulation of high styrene has excellent performance, high strength, good elasticity and production and use value.

Abstract: Researched the surface-enhanced Raman scattering on nanoparticle in terahertz range, and proved the existence of the same phenomenon-Raman enhancements in the terahertz band. By studying the electromagnetic enhancement principle of surface-enhanced Raman scattering, proposed to using finite difference time-domain to simulate the surface-enhanced Raman scattering of nanoparticles in the terahertz irradiated. Simulation results show that the FDTD method can effectively simulate the scattering of nanoparticles in terahertz band, resulting in surface-enhanced Raman scattering from the visible and infrared bands extended to the terahertz band, and the result provides basis for terahertz waves and surface-enhanced Raman scattering the combined application.

Abstract: Green packaging has become an international trend This article analyzes the necessity of the packaging design by using the green packaging material on the ground of the present situation of the polluted environment by the waste of packaging material, the development trend of green packaging material , the classification of green packaging materials and the green packaging design.

Abstract: For the effect of environmental temperature on the rubber material stress-strain relationships, rubber tensile specimens, compression specimens and shear specimens were made. Through the electronic universal testing machine Instron 5500R, the stress-strain curves of three kinds of specimens at different temperatures were obtained. The test results showed that the stress-strain relationship of rubber material was typically nonlinear. As the temperature increased, the elastic modulus of rubber material decreased.

Abstract: High strength fly ash ceramsite concrete has the advantages of low density, high compressive strength, but the brittleness is too large, limiting its application in engineering. In order to solve this problem, we used Carbon fiber in the orthogonal test. The results show that Carbon fiber can obviously improve the tension compression ratio of fly ash ceramisite concrete, improve the strength of fly ash ceramsite concrete brittleness.

Abstract: Proximate and ultimate analysis, X-ray diffraction, infrared spectroscopy and thermal analysis experiments were carried out to study the spontaneous combustion oxidation based characteristic of six Jurassic coal samples from North Shaanxi in West China and three Permo-carboniferous coal samples from East China. The results showed that the characteristic of north Shaanxi Jurassic coal was low ash, low sulfur, high volatile, high oxygen content and amorphous structure. More type and quantity of reactive functional groups existed in the original Jurassic coal, such as carboxyl, methyl, methylene and ether oxygen. And the characteristic temperatures of north Shaanxi Jurassic coal sample in the oxidation and spontaneous combustion process was lower than other coal samples, due to the participation in the reaction with oxygen of the more active functional groups.