Study of the System Wood – Coating Material. I. Wood – Liquid Coating Material

Holzforschung ◽  
2000 ◽  
Vol 54 (2) ◽  
pp. 189-196 ◽  
Author(s):  
Eva Liptáková ◽  
Jozef Kúdela ◽  
Ján Sarva
Keyword(s):  
Phase Boundary ◽  
Rheological Properties ◽  
Wood Surface ◽  
Surface Forces ◽  
Coating Material ◽  
Actual State ◽  
Wood Coating ◽  
Coating Materials ◽  
Wetting Process ◽  
Adhesion Work

Summary This paper deals with the evaluation of wood—wetting process with coating materials on the basis of interactions of surface forces on phase boundary. The obtained results are compared with the actual state in the system wood—coating material. Primary ability of coating materials—spontaneous spreading over the wood surface has been proved. There is also the secondary influence of rheological properties of coating materials causing deformations of the phase boundary, non-perfect wetting of the wood surface and apparent lowering of adhesion work. The influence of rheological properties has been expressed by using the coefficient F the meaning of which follows from the comparison between results of adhesion work computed according to modified Young-Dupré equation and of adhesion work determined on the basis of the interactions of surface forces on the phase boundary between wood and liquid coating materials. A direct dependence between the values of the coefficient F and coating materials viscosity has been proved.

Study of the System Wood – Coating Material. Part 2.Wood – Solid Coating Material

Holzforschung ◽  
2002 ◽  
Vol 56 (5) ◽  
pp. 547-557 ◽  
Author(s):  
E. Liptáková ◽  
J. Kúdela
Keyword(s):  
Liquid Phase ◽  
Phase Boundary ◽  
Intermolecular Forces ◽  
Surface Forces ◽  
Coating Material ◽  
System Stability ◽  
Coating System ◽  
Wood Coating ◽  
Material Part ◽  
The Stability

Summary This paper deals with the intermolecular forces in the system wood-solid coating, which primarily condition the stability of the system. Further, it points out a series of secondary factors that significantly distort the results of interactions between surface forces; not only influencing the phase boundary wood-coating material in the liquid phase, but also negatively impacting the wood-solid coating system stability.

scholarly journals Coating Matters: Review on Colloidal Stability of Nanoparticles with Biocompatible Coatings in Biological Media, Living Cells and Organisms

2018 ◽  
Vol 25 (35) ◽  
pp. 4553-4586 ◽  
Author(s):  
Jonas Schubert ◽  
Munish Chanana
Keyword(s):  
Colloidal Stability ◽  
Biological Fluids ◽  
Chemical Properties ◽  
Coating Material ◽  
Living Systems ◽  
Biological Media ◽  
Coating Materials ◽  
Physico Chemical ◽  
Environment Temperature ◽  
To Come

Within the last two decades, the field of nanomedicine has not developed as successfully as has widely been hoped for. The main reason for this is the immense complexity of the biological systems, including the physico-chemical properties of the biological fluids as well as the biochemistry and the physiology of living systems. The nanoparticles’ physicochemical properties are also highly important. These differ profoundly from those of freshly synthesized particles when applied in biological/living systems as recent research in this field reveals. The physico-chemical properties of nanoparticles are predefined by their structural and functional design (core and coating material) and are highly affected by their interaction with the environment (temperature, pH, salt, proteins, cells). Since the coating material is the first part of the particle to come in contact with the environment, it does not only provide biocompatibility, but also defines the behavior (e.g. colloidal stability) and the fate (degradation, excretion, accumulation) of nanoparticles in the living systems. Hence, the coating matters, particularly for a nanoparticle system for biomedical applications, which has to fulfill its task in the complex environment of biological fluids, cells and organisms. In this review, we evaluate the performance of different coating materials for nanoparticles concerning their ability to provide colloidal stability in biological media and living systems.

scholarly journals Silicone Resin Coating of Micro-Sized Ferrite Particles Using Supercritical Carbon Dioxide

Polymers ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2012
Author(s):  
Idzumi Okajima ◽  
Tatsuya Kanie ◽  
Takeshi Sako
Keyword(s):  
Film Thickness ◽  
Organic Solvents ◽  
Supercritical Co2 ◽  
Fine Particles ◽  
Particle Diameter ◽  
Coating Material ◽  
Silicone Resin ◽  
Coating Film ◽  
Coating Materials ◽  
Coating Method

An environmentally friendly and efficient polymer coating method for micro-sized particles was developed using supercritical CO2. Because this method used supercritical CO2 as the solvent to dissolve the coating material, we avoided environmental pollution from organic solvents, saved the energy required to evaporate/remove organic solvents, realized a uniform coating film on the fine particles, and prevented agglomeration of the coating particles. The solubilities of the five silicone resins used as coating materials were measured using the flow method, and the data were well correlated by Chrastil’s equation with an average deviation of 5.7%. Resins comprising numerous methyl-group side chains exhibited high solubilities and were suitable coating materials. A new semi-flow-type coating method using supercritical CO2 was also developed, which deposited a film with a uniform thickness of 0.2–1.3 μm on whole fine particles. Notably, in this method, the film thickness was easily controlled. A simple and rapid technique was developed for measuring the coating thickness using X-ray fluorescence analysis. The model for calculating the coating film thickness was based on the material balance of the coating material. This model satisfactorily predicted the thickness with an average error of 0.085 μm by measuring the solubility of the coating material in supercritical CO2, integrated flow volume of supercritical CO2, particle diameter, density and charged weight of the fine particle, and coating material density.

scholarly journals Pyrraline Formation Modulated by Sodium Chloride and Controlled by Encapsulation with Different Coating Materials in the Maillard Reaction

Biomolecules ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 721
Author(s):  
Liang ◽  
Chen ◽  
Yang ◽  
Lai ◽  
Yang ◽  
...  
Keyword(s):  
Sodium Chloride ◽  
Maillard Reaction ◽  
Gum Arabic ◽  
Coating Material ◽  
Model Systems ◽  
Simultaneous Increase ◽  
Maize Starch ◽  
Coating Materials ◽  
Normal Maize ◽  
High Amylose

Advanced glycation end products (AGEs), which are present in heat-processed foods, have been associated with several chronic diseases. Sodium chloride (NaCl) modulates the formation of furfurals and acrylamide in the Maillard reaction; however, the effects of NaCl on AGE formation are inconsistent. In this study, we investigated the effects of NaCl on pyrraline formation using glucose-lysine model systems. NaCl, especially at 0.50%, promoted Maillard browning and pyrraline formation, with a simultaneous increase in the 3-deoxyglucosone concentration. To reduce the rate of pyrraline formation, NaCl coated with different gums and starches were used. The results showed that NaCl encapsulation is an effective approach to mitigate pyrraline and 3-deoxyglucosone formation. The content of NaCl in the microparticles were 284 ± 12, 269 ± 6, 258 ± 8, 247 ± 10, 273 ± 16, and 288 ± 15 mg/g (coated with waxy maize starch, normal maize starch, HYLON VII high amylose maize starch, gelatinized resistant starch, xanthan gum, and gum arabic, respectively). The heat resistance of the coating material was negatively correlated with the pyrraline and 3-deoxyglucosone formation, whereas the solubility of the coating material had the opposite results. Coating the material with gum had little effects on the reduction of pyrraline and 3-deoxyglucosone.

Design and Processing of Temperature Resistant Enamel Coating Materials

2013 ◽  
Vol 457-458 ◽  
pp. 168-171
Author(s):  
Xin Fu ◽  
Chun Hua Zhang ◽  
Chun Qi Li ◽  
Ke Jun Li ◽  
Yu Bnag Zuo
Keyword(s):  
Stainless Steel ◽  
High Temperature ◽  
Enamel Coating ◽  
Coating Material ◽  
Structure And Properties ◽  
Coating Materials

In this work, a porcelain enamel coating material for high temperature resistant on 1Cr18Ni9Ti stainless steel is designed and processed. The structure and properties of the material are analyzed by SEM, EDAX, XRD and FTIR. The results show that the surface of the enamel glaze and the enamel coating are smooth and bright, there is no obvious crystallization characteristics in porcelain enamel. There is litter oxidation and inter-diffusion in the interface between 1Cr18Ni9Ti stainless steel and porcelain enamel coating material after coating enamel.

Comparison of Two Coating Material Reflections of Hollow Light Guide Tube

2014 ◽  
Vol 1041 ◽  
pp. 412-415
Author(s):  
Lenka Janečková ◽  
Stanislav Darula ◽  
Daniela Bošová
Keyword(s):  
Light Guide ◽  
Light Transmission ◽  
Transmission Efficiency ◽  
Luminous Flux ◽  
Coating Material ◽  
Guide Tube ◽  
Coating Materials ◽  
Two Samples ◽  
Transmission Measurements ◽  
Light Guides

This paper discusses tube transmission efficiency of two straight hollow light guides. Two samples with diameter of 530 mm and length 1170 mm were investigated under the artificial sky in the laboratory at ICA SAS in Bratislava. The entering luminous flux was calculated from measured illuminance in the point located on the top of light guide. Below the bottom of the light guide was located a set of measuring points on the special construction in the shape of a cross. In these points, one by one, the elementary illuminances were measured and the luminous fluxes leaving the light guide were calculated. Paper presents methodology for laboratory light transmission measurements and discusses effects of two various coating materials on light transmission efficiency of hollow light guides.

PLASMA-ASSISTED VACUUM-COATING PROCESSES

1992 ◽  
Vol 06 (01) ◽  
pp. 1-24 ◽  
Author(s):  
GERHARD KIENEL
Keyword(s):  
Thin Films ◽  
Melting Point ◽  
Substrate Temperature ◽  
Important Variable ◽  
Coating Material ◽  
Melting Points ◽  
Coating Materials ◽  
Substrate Temperatures

For the properties of thin films produced in a vacuum the most important variable is the mobility of the particles in the course of condensation, which is dependent on the melting point of the coating material, the substrate temperature and the energy of the particles as they strike the substrate. Because of the generally higher particle energies in plasma-assisted processes, under comparable coating conditions lower substrate temperatures suffice than in the case of conventional evaporative coating. Especially with coating materials having higher melting points, compact films can be produced only if the particle energies are sufficiently high.

Pelapisan Logam Menggunakan Plasma

2019 ◽  
Vol 10 (2) ◽  
pp. 129-134
Author(s):  
Wijono ◽  
Bob Alvin Sidabutar ◽  
Waru Djuriatno
Keyword(s):  
Thin Layer ◽  
Coating Material ◽  
Process Time ◽  
Material Surface ◽  
Silver Coating ◽  
Coating Materials ◽  
Layer Deposition ◽  
Materials Used ◽  
Research Show

One of the ways to improve the quality of the material is by using the thin layer deposition techniques on the material surface. DC magnetron sputtering is one of the methods frequently used to do so. This method uses plasma to create a thin layer on the material's surface. In this research, flyback circuit is used to generate plasma. This research examines the effects of electrodes’ gap and sputtering process time on the width of marks that appear on the substrate’s surface. The electrodes’ gap varies in range of 1, 2, 3, and 4 cm, whereas the sputtering process time varies in range of 36, 72, 108, 144, and 180 minutes. The substrate used in this research is iron and the coating materials used are aluminium and copper. This research uses plate-shaped electrodes in the coating process. The sputtering process resulted in the appearance of marks on the substrate’s surface. The marks were compared qualitatively with every gap range of electrodes, sputtering process time, and the coating material used. Next, they were categorized into 6 groups according to the thickness of the marks’ layer in order to obtain quantitative data which were then made into graphics. The results of this research show that silver coating material takes the shortest time to coat iron substrate, which is 36 minutes. In 36 minutes, the marks produced by silver coating fall under the group with the highest marks, compared to other coating materials. This research also shows that alteration of the electrodes' gap will affect the voltage of electrodes and the coating’s thickness groups. The further the gap between the electrodes, the higher the electrodes’ voltage and the coating’s thickness groups will be.

Preparation and application of fluorinated-siloxane protective surface coating material for stone inscriptions

2015 ◽  
Vol 35 (6) ◽  
pp. 511-522 ◽  
Author(s):  
Pengling Li ◽  
Fengxian Qiu ◽  
Xiaoying Zhang ◽  
Lili Wang ◽  
Qian Chen ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Surface Coating ◽  
Coating Material ◽  
Artificial Ageing ◽  
X Ray Diffraction ◽  
Coating Materials ◽  
Ageing Test ◽  
Transmission Electron ◽  
Ft Ir ◽  
Similar Appearance

Abstract A series of fluorinated-siloxane protective surface coating materials (FPA/SiO2) were prepared with different contents of dodecafluoroheptyl methacrylate (DFMA) and fixed content of siloxane. The properties of FPA/SiO2 protective materials were investigated by the methods of Fourier transform infrared spectroscopy (FT-IR) spectra, UV-Vis spectrum, transmission electron microscopy (TEM) and thermogravimetric analysis (TGA). The surface morphology and mineralogical analysis of the fresh and weathered stone samples were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD), respectively. The artificial ageing test, which was commonly used as a criterion for the evaluation of the protective ability of FPA/SiO2 coating material, was performed. The results indicate that when the content of DFMA is 30 wt.% and the content of SiO2 is 10 wt.%, the prepared coating material has good comprehensive performances. The artificial ageing test shows that the protective surface coating material has good compatibility with and similar appearance to stone relics. The effect of FPA/SiO2 protective coating material for protection of Jiaoshan Steles Grove (China) is noticeable and it can be widely applied to the protection of stone relics.

A Novel Wear Resistant Glass-Ceramic Coating Material

2011 ◽  
Vol 686 ◽  
pp. 521-527
Author(s):  
Ye Han ◽  
Shu Yu Yao ◽  
Wei Wei Zhang ◽  
Ming Gu ◽  
Yu Sui Yao
Keyword(s):  
Glass Ceramic ◽  
Ceramic Coating ◽  
Coefficient Of Thermal Expansion ◽  
Xrd Analysis ◽  
Coating Material ◽  
X Ray Diffraction ◽  
Coating Materials ◽  
Wear Resistant ◽  
X Ray ◽  
Glass Ceramic Coating

A novel wear resistant glass-ceramic coating system (based on SiO2-B2O3-Al2O3 glass system) on iron based substrate was developed. Friction coefficient, wear rate and coefficient of thermal expansion of coating material were evaluated using suitable methods. The coating materials and the resultant coatings were characterized using differential thermal analysis (DTA), X-ray diffraction analysis (XRD) and Scanning Electron Microscope (SEM). XRD analysis of the coating materials showed presence of a number of microcrystal. SEM micrographs indicate strong chemical bonding at the iron-ceramic interface. The coating material showed perfect properties for protection the iron substrate from abrasion.

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