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Title Transcription
モクザイ セッチャク ニ カンスル ケンキュウ ダイ6ポウ ネッタイ サン モクザイ ノ ヌレ ニツイテ
Title Alternative (English)
Studies on the Wood Gluing(VI) : On the Wettability of Tropical Woods
File
language
jpn
Author
Sakuno, Tomoyasu
Goto, Teruo
Description
On the tropical woods, the comparative weettability measured by three methods, and also the effect of specific gravity, pH or extract with ether on the wettability, were determind.
The wettability for each wood was determined by the methods of capillary rise, inclined plate and droplet(water and urea resin). The results of the experiment are shown in Table 1. The coefficient of correlations was calculated from the results.
Then the regression line was yielded by regression analysis only when a signifficant correlation at five percent or better was recoginzed. If the correlation was not siginficant, it was either not shown or horizontal line was drawn through the mean value.
The following conclusions may be drawn from the results of the analysis.
1) The wettability behavior revealed a sharp break in the trend of the dependent variable at about 0.8 specific gravity. On the woods below 0.8 specific gravity, the correlation of the wettability determined by the three methods was significant.(Fig. 1)
2) The specific gravity had more effect on the wettability of woods below 0.8 specific gravity, followed by the extract with ether and pH. These factors had no effect on the wettability of woods above 0.8 specific gravity. (Fig. 2, 3)
3) The capillary rise method gave reproducible values of wettability but was a timeconsuming method. On the other hand, the contact angle method(inclined plate and droplet) was a quick and simple method to use. However, the values obtained by inclined plate and droplet methods showed a variation according to the researcher and to surface condition of the wood, respectively.
Journal Title
Bulletin of the Faculty of Agriculture, Shimane University
Volume
4
Start Page
97
End Page
102
ISSN
0370940X
Published Date
1970-12-15
NCID
AN00108015
Publisher
島根大学農学部
Publisher Aalternative
Shimane University, Faculty of Agriculture
NII Type
Departmental Bulletin Paper
OAI-PMH Set
Faculty of Life and Environmental Science
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