Advanced Materials Research Vols. 415-417

Abstract: Fracture is the main factor to control seepage of fractured low permeability reservoir, which is more and more respected in the oilfield development. It will be one of the key factors in fractured low permeability reservoir that recognizes and describes correctly the geometric dimension and direction of the fracture. The article was done in the paper through the principle and characteristics of the particle tracer technology, analyzes the screening condition, introduces the injecting technology, monitors in the locale and creates an analytic method of particle tracer. The technology will provide a new method to determine the geometry and direction of the fracture of fractured low permeability reservoir, and will offer new approach to oilfield dynamic description.

Abstract: This paper pointed out that regeneration is the necessary condition of achieving circular economy and sustainable development,aslo is the inevitable trend of the national highway development. By analyzing and comparison among four different ways, it is concluded that cold in plant recycling has more advantages on economic,rationality,energy-saving & environment-friendly and so on. On the basis of comparison in four different regeneration methods, the writer analysis technology and economic advantages and prospects of application of the emulsified asphalt cold in plant recycling, combining with the status quo of highway maintenance and improvement, and point out that emulsified asphalt cold in plant recycling is the ideal choice to solve our current semi-rigid base problem,which avoid reflective cracking and extend the pavement life.

Abstract: In this study, vertically aligned CuInS₂ nanorod arrays were successfully fabricated by sulfurization method with porous alumina template, which was used to prepare CuInS₂ thin film in the reported paper. The nanorod arrays showed the diameters of about 200nm and the length of about 1μm, and highly vertically aligned on the CuInS₂ thin film, were characterized by scanning electron microscope. The sample was identified as the single chalcopyrite phase and the crystal structure with (112), (200)/(004), (202)/(204) and (116)/(312) atomic planes orientation by Raman scattering and X-ray diffraction, respectively. The Cu: In: S atomic ratio of 1:0.84:1.94 was exhibited in the sample by energy dispersive X-ray spectroscopy.

Abstract: This project studies the impact on ‹110› dislocation-free monocrystal grown by Czochralski method (hereinafter referred to as CZ) through puller's heat zone system and pulling process. Adjusting heat system appropriately, increasing pulling speed sharply, controlling the diameter and length in neck growth, controlling the speed in crown growth, increasing the length and diameter of tail, all of which are key elements to guarantee the success of ‹110› dislocation-free monocrystal pulling. The ‹110› dislocation-free monocrystal we developed under this project can be applied to optoelectronic devices for both semiconductor and solar industry. According to the verifications of the customer, the solar cell manufactured by ‹110› silicon monocrystal has unique features of ultra-thin and high efficiency. Furthermore, it can solve the problem caused by sheltering issue. Compared to traditional solar cell, silicon usage is 3 times less. As a result, it reduces the material cost dramatically.

Abstract: The critical material of photo-anode, the TiO₂ nano-particles, as the most important component in dye sensitized solar cells (DSSCs) was studied in this paper. The TiO₂ nanoparticles were prepared by the method of micro-emulsion. In the process of preparation, the factors including the kinds of surfactant, and the molar ratio of water to titanium (R value) were investigated. Finally, the optimal condition for the preparation of the TiO₂ nano-particles was determined. When Tx-100 was used as the surfactant and R was 35, the TiO₂ nano-particles were prepared and used as photo-anode in the DSSCs, which were sensitized by N719, test under AM1.5G sunlight. The highest photoelectric conversion efficiency was achieved: Short-circuit photocurrent (Isc) =13.91mA/cm², open-circuit photo voltage (Voc) =0.83V, fill factor (FF) =55.06%, photoelectric conversion efficiency (η) =6.36%.

Abstract: This document explains and demonstrates the problem of butanol and propylene oxide propoxylation, ZrO₂ load active alkali metal oxides MgO the catalytic propoxylation method, analyzed a new type of catalyst activity and selectivity. The results show that the synthesis of ZM complex oxide as a catalyst for the reaction of butanol substrate, through the catalytic reaction of propylene oxide, selective access to the propylene glycol ether, High selectivity synthesis 1-butoxy-2-propanol. Synthesis of complex oxide catalyst ZM series in the course of the performance of the primary ether good selectivity, Primary ether, second ether ratio greater than 12, and the catalytic activity is also high (about 90% of all).

Abstract: A new Gemini surfactant was synthesized with chloroacetyl chloride, urea and N, N-dimethyl dodecyl amine as raw materials. Its structure was verified by IR and ¹HNMR. The surface active properties of the Gemini surfactant in water was measured at room temperature. Results indicate that the bisquaternary ammonium salt exhibits lower the critical micelle concentration(CMC) and surface tension at the CMC (γ_cmc), compared with conventional surfactant C₁₂TAB. The sterilizing antimicrobial performance of the Gemini Surfactant shows excellent bactericidal activities against Magnaporthe grisea and Bipolaris sorokiniana compared with C₁₂TAB at 50 mg/L.

Abstract: This paper focuses on the properties of the transdermal absorption of Human-like collagen (HLC). In present study, fluorescent marker (isothiocyanates were fluorescent element) was used to detect the absorptivity of HLC and gelatin was considered as a control. 2% HLC solution, 2% gelatin solution, a mixture of 2% HLC and azone, a mixture of 2% gelatin and azone were prepared, respectively. And then this solution was smeared on skin of mice. After 4h and 8h, the skin were collected and observed under a fluorescence microscope. In conclusion, pure human-like collagen has certain transdermal absorption and azone promote the transdermal absorption property of Human like collagen in comparison with gelatin.

Abstract: This article is trying to point out the importance of eco-material, from the trait of common eco-material on the interior wall, as well as the comparison between the eco-material and the traditional material, to highlight the advantages of eco-material and call for more attentions.

Abstract: Polyimides prepared from 5-amino-2(p-aminophenyl) benzoxazole (AAPB) with pyromellitic dianhydride(PMDA), 2,2’3,3’-biphenyl tetracarboxylic dianhydride(i-BPDA), 4,4’-oxdiphthalic anhydride(ODPA), 1,4-bis(3,4-dicarbosyphenoxy) benzene dianhydride(HQDPA) and 2,2-bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride (6FDA) were synthesized successfully via a conventional two-stage method. Their structures and properties were characterized by FT-IR, DSC, TG and XRD. The intermediate poly(amic acid)s had inherent viscosity range of 0.86~2.18 dL/g and could be thermally converted into light yellow polyimide films. The polyimides showed excellent solvent resistance and good thermal stability. The glass transition temperatures (T_g) were found to be 336oC~369 oC .The decomposition started at a temperature above 530oC in N₂ atmosphere.