Composites containing

Xem 1-20 trên 162 kết quả Composites containing
  • Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí hóa hoc quốc tế đề tài : Lattice-patterned LC-polymer composites containing various nanoparticles as additives

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Lattice-patterned LC-polymer composites containing various nanoparticles as additives

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  • In this study, the isotactic polypropylene, a semicrystalline polymer, was used as a matrix for composites containing 20% and 40% (by weight) of glass bead filler. Selected surface treatment was applied to obtain different adhesion between particles and polymer matrix. In addition to non-treated filler, filler treated with i) a release agent (labelled as NO adhesion) and ii) an adhesion promoter (labelled as GOOD adhesion) were incorporated into the matrix.

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  • Unsaturated polyester composites reinforced by glass fiber and by hybrid reinforcement glass fiber - lung fiber with cellulose microfiber (MFC) were prepared and investigated. Tensile and flexural strengths of material reached the highest value at polymer composite with 48 %w glass fiber mat and 0.3 %w MFC (208.33 MPa and 243.6 0 MPa), while the highest impact strength reached 212.48 kJ/m2 at composite containing 48 %w glass fiber but 0.5 %w MFC.

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  • In this paper, we focus specially on the effective conductivity of the isotropic composites containing the disorderly oriented anisotropic inclusions. We aim to replace those inhomogeneities by simple equivalent circular (spherical) isotropic inclusions with modified conductivities.

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  • Vật liệu. – Vật liệu nội thất có xuất xứ từ Trung Quốc và được cung cấp kèm theo chứng chỉ do Đăng kiểm chứng nhận. – Vật liệu tấm trần và tấm vách được bố trí theo bảng 3.1 sau: Bảng 3.1. Bố trí vật liệu tấm trần và tấm vách. Tấm trần Vật liệu Vỏ bọc cầu thang chính Hành lang đi lại khu vực phòng ở Bông thuỷ tinh dày 30mm phủ tấm composite Bông thuỷ tinh dày 30mm phủ tấm composite Bề mặt Tấm vách Vật liệu Bề mặt Bông thuỷ tinh Với lớp Với lớp...

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  • Tàu container 225TEU được đóng theo kết cấu liên hợp giữa kết cấu ngang và kết cấu dọc. Kết cấu dọc áp dụng cho giàn đáy, giàn boong. Giàn mạn tàu tổ chức theo nguyên tắc hệ thống ngang. Hai vách dọc của tàu với tư cách thành phần chính tham gia độ bền dọc tàu, được tăng độ cứng bằng các cơ cấu tổ chức trong hệ thống ngang. Các kết cấu ngang đặt cách nhau 2.5m, các kết cấu dọc đặt...

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  • The amount of energy that people used in the past two decades is equivalent to the total amount of energy in the past. This huge increase of energy use has been made possible by extending depletion of fossil reserves and is clearly unsustainable. Does it mean that once the reserves are exhausted the amount of energy available to humans would be similar before the era of fossil fuels? Not necessarily. Currently, the total energy used by mankind No. 1/5500 fraction of the total incident solar energy on earth....

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  • Beneficiation (or concentration) processes are gener- ally used to upgrade the phosphate content by removing contaminants and barren material prior to further processing. A few ores are of sufficiently high quality to require no further concentration. The natu- rally occurring impurities contained in phosphate rock ore depend heavily on the type of deposit (sedi- mentary or igneous), associated minerals, and the extent of weathering. Major impurities can include organic matter, clay and other fines, siliceous material, carbonates, and iron bearing minerals.

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  • Furniture layout design falls under the umbrella of space planning, a sub-field of interior design that deals with the allocation of spatial resources [Kilmer and Kilmer 1992; Kubba 2003; Pile 2007; Karlen 2009]. To identify guidelines for furniture layout we have consulted manuals on furniture layout [Talbott 1999;Ward 1999; Sharp 2008] and have interviewed four professional designers who specialize in arranging furniture. An effective furniture layout must address both functional and vi- sual criteria.

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  • • Rebalance the Relationship. The EU should neither try to minimise its contact with Russia as proponents of ‘soft containment’ have suggested, nor submit to a relationship skewed in Russia’s favour where dependence is weighted in one direction. To rebalance the relationship, the EU needs to adopt an internal code of conduct on energy deals and guidelines on long-term contracts and forthcoming mergers.

    pdf20p tay_thi_le 19-02-2013 28 3   Download

  • The electrophoretic deposition (EPD) method was adopted for a fabrication of nanocomposite layers composed of ZnO particles covered by the polythiopene shell in a reduced state. This composite was prepared by oxidative polymerization of thiophene monomer with iron (III) chloride as a catalyst in the presence of ZnO particles. After polymerization, polythiophene in oxidized form was reduced by the extraction in methanol. Electrochemical properties of the obtained composite were measured by cyclic voltammetry and electrochemical impedance spectroscopy.

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  • Angelica sinensis (OLiv.) Diels ("Danggui") belongs to the family Umbelliferae. Its rhizomes are reputed to have marked restorative, antianaemic and haemagogic properties. From ethyl acetate and butanol extracts of rhizomes of this plant 8 nitrogen-containing compounds (1-8) have been isolated. Their structures were elucidated by means of MS and NMR spectroscopic methods as 5-oxo-proline, 5-oxo-prolin-ethylester, nicotinamide, tryptophane, perlolidine, 1,2,3,4-tetrahydro-1-methyl- -carboline-3-carboxylic acide, adenosine and uridine.

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  • The development of concept in structural morphology lets description the location of nickel nanoclusters in conductive organic polymers, which may be a new kind of structure in conductive organic polymer composites family. As a new route, such the development was supported by electrochemical two-pot process, on which polianiline containing nanoclusters of nickel incorporated in layer by layer were prepared, in H2SO4 0.1 M solutions. The presence of nickel nanoclusters in polymer matrix and the changes in morphology were confirmed by SEM/EDS

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  • The automatic extraction of relations between entities expressed in natural language text is an important problem for IR and text understanding. In this paper we show how different kernels for parse trees can be combined to improve the relation extraction quality. On a public benchmark dataset the combination of a kernel for phrase grammar parse trees and for dependency parse trees outperforms all known tree kernel approaches alone suggesting that both types of trees contain complementary information for relation extraction. ...

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  • This study aimed to synthesize, determine characteristics of cellulose nanocrystals such as morphology, size particle, zeta potential, Fourier transform infrared spectroscopy (FT-IR) and transmission electron microscopy (TEM). The study also evaluated effect of concentration of added cellulose nanocrystals to hydroxypropyl methylcellulose-base films and coatings containing carnauba Nano emulsion and chitosan nanoparticles.

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  • A matlab program is coded using the CE formulation. Numerical results on natural frequencies are validated with the available results in other investigations. The effects of the fluid level, semi-vertex angles and lamination sequences on the natural frequencies and circumferential wave number of joined composite conical-conicalconical shells are investigated.

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  • The study results phase composition of the coatings showed that the coatings were composed γ-Al2O3 and Al2TiO5 phase. The compounds AlPO4 and Al(PO3)3 were found in the coating sealed with aluminum phosphate. The coatings sealed with aluminum phosphate containing Al2O3 nanoparticles have lower porosity density, higher hardness and higher wear resistance than the coating sealed with aluminum phosphate uncontain Al2O3 nanoparticles and the unsealed coating.

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  • This paper presents results of preparing and examining characteristics of the Nickel electrodeposition coatings containing MWCNTs (Ni-MWCNTs). The Ni-MWCNTs composite coatings deposited on a steel plate with the area of 0.4 dm2 using bipolar pulses at 470 Hz and 50oC in a 5-liter bath.

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  • The synthesized composites were loaded in polyvinylbutyral (PVB) to develop coating for mild steel substrates. A comparative study of the corrosion protection efficiency of carbon steel coated with PVB and PVB containing composites was evaluated by measurement of open circuit potential (OCP), Tafel polarization and electrochemical impedance spectroscopy (EIS).

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