Search results

PAE coatings are widely used to prevent corrosion of metallic structures, concrete and other structure because of their low manufacturing costs and ease of application, suitable bulk properties, versatility and aesthetic attributes.
Hydrogen bonds are formed by the reaction between those gropes, which are one of the most typical characteristics of polyurea and have significant effect on the morphology structure and mechanical behavior.
As the difference between molecular structures, PAE based polyurea with different degree of hydrogen bond had different gloss decrease trend.
Considering the repeatedly cooperative reaction of UV light, humidity, temperature, salt-fog, water, etc., the destruction in molecular structure of coatings was worse than that in salt-fog exposure only.
Amine chemistries for isocyanate-based coatinga.

It is a high-tech that studies the atomic and molecular structure, the nature of matter, as well as their interactions and movements at nano-scale and uses these features for the service of humanity.
�ano-assembly Technology in Mechanical Manufacturing Nano-assembly technologies study the operation on molecular-level and atomic-level; its scientific bases are molecular chemistry and physics.
Glotzer and researcher Zhenli Zhang showed how the nano-particles were self-assembled into line, sheets, shells and other more complex structures.
Due to the investigation into many basic features, structure and interaction about nano-materials and nano-devices was done by halves, there existed many blindness during the process of designing and manufacturing, so that there still existed many problems about the existing measuring token techniques.
The major research works on the material science of micro-mechanism are listed as follows: (1) Research on the materials of micro-structure and its physical properties; (2) Study on the mechanical analysis and the failure laws of micro-mechanical structure.

The lattice structure of HAVAR® foils in different metallurgic conditions is presented, as well as visible internal structure, measured by Transmission Electron Microscopy (TEM).
The HT sample had a second hcp structure.
A step-like structure of the W(E) curve is clearly pronounced at lower positron energies, whereas the S(E) curve is showing much less such a structure.
Schrader (Eds.), Principles and Applications of Positron and Positronium Chemistry, World Scientific Publ., Singapore, 2003, Chapter 10, pp. 253-280
Huomo, Profiling multilayer structures with monoenergetic positrons, Phys.

The structure of the product was then analyzed by using spectrometer FTIR and GC-MS.
The structure of the products was confirmed by using spectrometer FTIR, GC-MS, 1H-NMR, and 13C-NMR. 15 Glucose laurate (GLC12).
Structure of lauroyl chloride was confirmed by comparing the FTIR spectrum with that of lauric acid.
The product structures of this reaction is presented in Fig. 2.
The 13C-NMR spectrum was in an agreement with the assigned structures.

The Structure and Working Principle of DSSC Fig. 1 The schematic diagram of the DSSC.
After adding precipitant of tert-butylamine and subjecting hydrothermal treatment, Zn2SnO4 with crystal structure of cubic inverse-spinel and average crystal size in the range of 10-60 nm was obtained.
The fabricated Zn2SnO4 nanofibers electrodes possess highly porous structure, which showed high specific surface area up to 124 m2/g.
The performance of Zn2SnO4-DSSCs sensitized with three different dyes, two donor-conjugate-acceptor (D-π-A) structured organic dyes and a ruthenium complex (N719) dye were compared.
The unique structure Zn2SnO4 was endowed the following features: (1) enhancing the light absorption by generating light scattering centers; (2) improving electron transport along the nanoplate; (3) be favorable for electrolyte diffusion as a result of special structure.

Zhang and Li [2] reported that the addition of nano-SiO2 and nano-TiO2 can refine the pore structures and therefore reduce the permeability of concrete to chloride.
This is due to its layered morphology which helps in the refinement of the pore structure and the tortuosity of the path for water ingress which are discussed in later sections.
Conclusions This study demonstrates that the transport properties of cement mortar can be improved by adding low cost GNP through a facile fabrication, which refines the pore structure of the cement mortar due to its large aspect ratio and layered structure, as well as its barrier characteristics.
Li, Pore structure and chloride permeability of concrete containing nano-particles for pavement, Constr.
Models for the permeability of filled polymer systems, Macromolecular Sci.: Part A – Chemistry, 1 (1967) 929-942

The fluorine atoms can form complex hydrogen network structure and strengthen the coulombic interactions, which can absorb CO2 molecules effectively.
From Table 3, it can be seen that the density decreases slightly with increasing temperature, which has a close relationship with the structure of ILs.
The structure of IL has an important influence on its physical properties, especially that of the anion.
The anion structure of ILs plays an important role in the CO2 absorption process.
Journal of Physical Chemistry B. 114 (2010) 3608-3617

Basic elements of SFA .The basic four elements of SFA are "substance", "process", "inventory" and "flow"[5]: (1) Substance: substance is the object of SFA study, which from the prospective of chemistry concerns a specific chemical elements or compounds, also a specific substance or material
The network structure of copper metabolism.
According to the Analytical framework of SFA, the topological network structure of copper metabolism is established on the basis of the substance flows among systems or sub-systems.
The topological structure of copper metabolism is shown in Figure 2 based on the sub-systems and substance flows as put above.
Conclusions (1) This paper, by adopting SFA in analyzing the element metabolism from a micro-level (a certain industry or enterprise), analyzed the element metabolism structure from the aspect of a manufacturer based on case study, then established substance flow accounts, which offers a case suitable for further study

Elemental analysis data (EDAX) to Fe@Au nano-structure at laser fluence (1.9 J/cm2) results give percentage ratio of (Fe, Au) elements in the prepared nano-structure that are certain gold coating on Fe surface.
Elemental analysis data (EDAX) to Fe@Au nano-structure at laser fluence (2.2 J/cm2).
Elemental analysis data (EDAX) to Fe@Au nano-structure at laser fluence (2.5 J/cm2).
Physical Chemistry B (2006) 7122-7128
Barcikowski, Solvent-surface interactions control the phase structure in lasergenerated iron-gold core-shell nanoparticles, J.

Since the asbestos fiber are fibrous, this enables a more stable mesh structure to be formed between the asbestos fiber and the clay in the drilling fluid.
At the same time, asbestos fiber due to its own composition is inorganic mineral-like structure.
It further reflects that asbestos fiber have a strong heat stable structure.
International Symposium on Oilfield Chemistry.
Use of organophilic asbestos as the structure-former of drilling solutions[J].