Effect of Surface Moisture Content on the Durability of Silane-Type Surface Penetration Layers During the Material Application

2021 ◽  
pp. 585-593
Author(s):  
Takuya Kondo ◽  
Yuta Nomura ◽  
Shinya Mizutani ◽  
Yoshihiko Nakamoto ◽  
Katsunori Yokoi
Author(s):  
Rami Benkreif ◽  
Fatima Zohra Brahmia ◽  
Csilla Csiha

AbstractSurface tension of solid wood surfaces affects the wettability and thus the adhesion of various adhesives and wood coatings. By measuring the contact angle of the wood, the surface tension can be calculated based on the Young-Dupré equation. Several publications have reported on contact angle measured with different test liquids, under different conditions. Results can only be compared if the test conditions are similar. While the roles of the drop volume, image shooting time etc., are widely recognized, the role of the wood surface moisture content (MC) is not evaluated in detail. In this study, the effect of wood moisture content on contact angle values, measured with distilled water and diiodomethane, on sanded birch (Betula pendula) surfaces was investigated, in order to find the relationship between them. With increasing MC from approximately 6% to 30%, increasing contact angle (decreasing surface tension) values were measured according to a logarithmic function. The function makes possible the calculation of contact angles that correspond to different MCs.


2015 ◽  
Vol 6 (2) ◽  
pp. 78 ◽  
Author(s):  
Yerima I. ◽  
Y. M. Ngulde

<p>Fuel around the rural fishing community of the Lake Chad in Borno state is scarce and expensive. Where it is available it is at a distance of 120km therefore alternative and strategy must be developed to provide fuel to the fishing community to preserve the large volume of fish landed around the Lake Chad. A visit was made to the lake shores to identify the various types of materials in use by the processors as fuel and analysis of the fuel types were made, especially moisture content being the most important factor in determining the energy value of a fuel.  The fuel types were compared to the type and quantity of fish landed daily. The analysis of variance between paired fuel types was found to be significant at 1% with low coefficient of variation. In this study Eucalyptus camaldulenis and Acacia senegal were found to have the least moisture content and available to processors. Rice hull which has a 0.001% surface moisture content was not known to the processors as biofuel. Which we hope to introduced at the end of the research. The use of cowdung was always minimized due to its social ills. </p>


1994 ◽  
Vol 32 (1) ◽  
pp. 41-50 ◽  
Author(s):  
K. Auerswald ◽  
C.K. Mutchler ◽  
K.C. McGregor

2011 ◽  
Vol 335-336 ◽  
pp. 1071-1074
Author(s):  
Jian Da Cao ◽  
Xuan Run Wu

In this paper, we used spectrophotometric measurement to get the reflectance values of experimental samples and discussed relation between the reflectivity and the moisture content. By measured curves of reflectivity and the wavelength of 47 samples from 0 to 30 minutes we had found that the reflectance difference was the largest when the wavelength in the 600-700nm wavelength,it could help us to distinguish dynamic surface moisture performance at different time points, so, the paper had selected the reflectivity in wavelength 650nm as the feature value. Using the reflectance had established the linear model of moisture content, the results showed that: R2 value of the determination coefficient of the linear regression model is 0.9979, almost close to 1, it had indicated that the reflectivity as the feature value could be used to predict fabric moisture content.


Langmuir ◽  
1994 ◽  
Vol 10 (2) ◽  
pp. 592-596 ◽  
Author(s):  
S. Pence ◽  
V. J. Novotny ◽  
A. F. Diaz

2014 ◽  
Vol 1000 ◽  
pp. 352-355
Author(s):  
Jiří Brožovský

Testing with rebound hammers is influenced by various factors, like composition and components of tested material, treatment of tested surface, moisture content of tested material, temperature of material and environment. Influence of these factors on measurement results during testing concrete is described in technical literature and standards. Calcium silicate body can be characterized as non-cement based fine grained concrete, however, with considerably higher water absorbing capacity compared to standard concrete: ca 12-14% (fine aggregate bonded by hydration products of lime). To use rebound hammers for testing calcium silicate bricks, influence of selected factors on measurement results was tested. It was proved, that content of moisture and temperature of calcium silicate brick has influence on results of measurements with rebound hammer, and therefore it is necessary to take into account these influences.


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