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The effects of drying temperatures on the properties of bamboos
|關鍵字:||drying time;乾燥時間;drying rate;honeycomb;split;乾燥速率;蜂巢裂;開裂||出版社:||森林學系||摘要:||
The purpose of this study was to investigate the physical and mechanical properties and energy consumption of Moso bamboo,Ma bamboo and Thorny bamboo which were kiln-dried at differenttemperatures. The results of this study are summerized as follows:1.The drying time of Moso bamboo decreased with increasing kiln temperature; drying rate increased with increasing kiln temperature, but was inversely correlated with the thickness of bamboo wall.2.Density of three kinds of bamboos increased with increasing kiln temperature. There were having a tendency to show that the highest density was found at the top section of culm, followed by the middle and bottom sections.3.Moso bamboo dried at 120℃, no splitting was found, but honeycomb occurred at node; when dried at 100℃, splitting was found at the top and middle sections; honeycomb occurred at node; when dried at 80℃ and 60℃, splitting was found at the top and middle section.4.The tensile strength, shearing strength, and static bending strength of Moso bamboo and Thorny bamboo increased with increasing kiln temperature, having a tendency to show that the top section of culm was the highest in strength values, followed by the middle and bottom sections; as regards Ma bamboo, the highest strength was found when dried at 80℃, also having a tendency to show that the top section of the culm was the highest in strength values, followed by that of middle and bottom sections.5.The tensile strength of Thorny bamboo was the highest among three kinds of bamboos, followed by Moso bamboo and Ma bamboo; as regards shearing strength, Moso bamboo was the highest, followed by Thorny bamboo and Ma bamboo; as regards static bending strength, Thorny bamboo was the highest, followed by Ma bamboo and Moso bamboo.6.Moso bamboo kiln-dried at different temperatures, the highest total power consumption was found when dried at 100℃, followed by those of 80℃ and 60℃, 120℃ was the lowest.
同窯溫乾燥時,全部電力消耗以 100℃乾燥者最耗電,其次為 80℃及60℃
|Appears in Collections:||森林學系|
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