Applied Mechanics and Materials Vols. 217-219

Abstract: The tensile properties of basalt filament were measured and compared with these of E-glass fiber. The plain basalt filament fabric (PBFF), twill basalt filament fabric (TBFF) and plain glass filament fabric (PGFF) that woven by the CSW-03 loom under the same fabric density were used to make diaphragm preforms. Thermoplastic acrylic resin was chosen to coat on the diaphragm preforms using Werner Mathis AG LTF97885 coating machine when the coating thickness is 0.1mm, curing time is 30min. Tensile test was carried out on the diaphragm performs and coating diaphragm by 3380Instron advanced testing machine. Effect of curing temperature (<200°C) on tensile properties of diaphragm materials was investigated. The coating PBFF and the coating TBFF were compared to analysis the effect of organization structures on the elastic modulus. The results indicated that the best elastic modulus of diaphragm materials was achieved when the curing temperature was 120°C. PBFF is more suitable for diaphragm materials than PGFF and TBFF. The proposed curing temperature for making diaphragm with different elastic modulus ranges from 100°C to 140°C.

Abstract: Based on domestic and foreign research data on the baseball sports injury, analysis of the vulnerable parts and joints of structural characteristics of baseball players, in order to protect vulnerable parts and joints, this article combining the ergonomics theory, to improve the existing baseball sportswear, explore and new material D3O used in baseball protective clothing. The research results will help to avoid and reduce the degree of injury of the baseball player in training and competition, in line with the concept of competitive sports people-oriented.

Abstract: A series of ZnIn₂S₄ photocatalysts were synthesized via a surfactant-assisted hydrothermal method at 120 °C for 6h. The products were characterized with X-ray diffraction (XRD), UV-vis diffuse reflectance spectra (DRS) and field emission scanning electron microscope. The results indicated that the series of samples have similar profiles in the XRD and DRS detection. The addition of surfactants were not promote the regular and uniform marigold-like microspheres morphology. The photocatalytic activities of the as-prepared samples were evaluated by photocatalytic degradation of methyl orange solution under visible light irradiation.

Abstract: o improve the electrical properties of PSZT piezoelectric ceramics, a ceramic powder Pb0.94Sr0.06(Zr0.52Ti0.48)O3 (PSZT) with Nb2O5 was designed. The power was prepared by solid state sintering. The surface structure of sample was characterized using SEM, and the crystal structure of the sample was examined by XRD. The capacitance and dielectric loss of sample was measured by Tonghui Electronics TH2618 capacitor tester. The result of microstructure and electrical properties show that Nb2O5 inhibit crystal growth when the contents of Nb2O5 is less than 0.5.wt%, but excessive Nb2O5 cause pyrochlore phase producing while the contents of Nb2O5 more than 0.5wt.% . The excellent piezoelectric properties are achieved in the ceramics with 0.5wt.% Nb2O5:εr=1504,tanδ=0.0065,d33=336pC/N, kp=0.562.

Abstract: The visible-light photocatalytic degradation of an azo dye Reactive Deep Blue K-R by BiOI and BiOCl_0.2Br_0.1I_0.7 photocatalysts was investigated. When the reaction proceeded for 1 h under the conditions of 15mg/l Reactive Deep Blue K-R solution and PH=3, the visible-light degradation degrees of Reactive Deep Blue K-R were 93% and 52% for BiOCl_0.2Br_0.1I_0.7 and BiOI, respectively.Moreover, the photodegradation of Reactive Deep Blue K-R by BiOI and BiOCl_0.2Br_0.1I_0.7 followed a first-order reaction kinetic and the values of k for BiOI and BiOCl_0.2Br_0.1I_0.7 are 0.911h-1 and 1.981h-1, respectively. BiOCl_0.2Br_0.1I_0.7 exhibits better visible-light-responsive photocatalytic performance for photodegradation of Reactive Deep Blue K-R than BiOI due to the smaller particle size, the larger specific surface area and the stronger redox potential of BiOCl_0.2Br_0.1I_0.7.

Abstract: In this study we report on the synthesis and characterization of thermally stable polycrystalline diamond (PCD) using Ni-based alloys catalyst as a sintering aid and the B-doped diamond powder in the infiltrating way. The samples were treated at 5.6 GPa and 1200–1480 °C for 10 min in China-type cubic high pressure apparatus. Scanning electron microscopy showed significant intergrowth of the diamond particles sintered in the presence of Ni-based alloy. X-ray diffraction showed the phase change of the samples sintered at the different temperature. Differential thermal analysis (DTA) and thermogravimetric analysis (TG) showed the sample was significantly more heat-resisting compared to conventional PCD. The results showed that the appropriate conditions of thermally stable PCD sintered were 5.6GPa and 1200–1480 °C.

Abstract: In this paper, the low-silicon palladium-platinum tailing is used to produce autoclaved aerated concrete. The influences of water binder ratio, palladium-platinum tailing content, lime content and conditioning agents on the compressive strength of the autoclaved aerated concrete are investigated. Optimal raw material formulation and procedure are determined for the autoclaved aerated concrete. The compressive strength and frost resistance of autoclaved aerated concrete made by the optimal raw material formulation and procedure meet with the requirements of autoclaved aerated concretes of B06 grade, and its thermal conductivity, drying shrinkage reach the requirements of the relevant national standards of China.

Abstract: Boron doped diamond (BDD) films were deposited on porous Ti substrates by direct current plasma chemical vapor deposition (DC-PCVD) system. For improve adhesion between diamond and porous Ti, and shorten diamond nucleation period, appropriate pretreatments were carried out. Micro diamond particles were mechanical embedded in the holes of porous Ti substrates and then nanodiamond powders were seeded on substrates by ultrasound sonication prior to deposition. The samples were examined by scanning electron microscopy (SEM), micro-Raman spectroscopy, and cyclic voltammetry. It was found that BDD films covered the whole porous Ti substrate surface, and exhibited the good electrochemical property.

Abstract: The current situation of research on titanium dioxide photocatalytic oxidation technology is introduced. Based on the general characteristics of VOC in cars, the application and the research of the titanium dioxide photocatalytic technology in degrading VOC in cars are described and then analyze the problems of the technology in industrial application and its prospects in the future.

Abstract: Finite element method is useful in research of nonlinear problems, and this method has been an obbligato tool in scientific research, engineering design, and product optimization. This paper aims to use finite element method in the study of air-conditioning clothes, for simulating the thermal flux in the microenvironment of body-clothes- macroclimate. Phase change materials are put on clothes to realize the air conditioning effect. NX nastran is adopted to do the simulation and analysis, and proved to be effective.