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題名 | 孟宗竹炭板之機能特性探討=The Functional Characteristics of Moso Bamboo Charcoal Board |
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作者 | 孫上平; 楊德新; 王松永; | 書刊名 | 林產工業 |
卷期 | 25:4 民95.12 |
頁次 | 頁305-316 |
分類號 | 440.23 |
關鍵詞 | 孟宗竹炭板; 精煉度; pH值; 熱傳導率; 電磁屏蔽效能; 甲醛吸附率; 耐燃性; Moso bamboo charcoal boards; Quantity of resistance; pH value; Thermal conductivity; Electromagnetic shielding efficiency; E.S.E.; Formaldehyde absorption ratio; Fire-resistant properties; |
語文 | 中文(Chinese) |
中文摘要 | 本研究探用4-6年生孟宗竹,藉土窯以500℃,與700℃溫度炭化,將所得炭化材破碎成2mm-6mm粒徑,再與10%絕乾重之回收紙漿混合,並噴附用膠量8%之乳化型丙烯酸樹脂,熱壓製成密度0.30-0.80g/cm^3之孟宗竹炭板,再進行其機能特性探討,所得結果可歸納於次:(1)孟宗竹炭在500℃炭化者,碳元素為84.3%,pH值為9.79,精煉度平均值為7.0。700℃炭化者,碳元素為87.45%,pH值為10.15,精煉度平均值為1.13。(2)孟宗竹炭板,700℃炭化者,電阻係數對數值(log ρ)會隨板密度增加而呈直線迴歸式減低,且具有極顯著性相關。(3)孟宗竹炭板電磁波屏蔽效能(E.S.E)會隨其板密度(D)增加而呈直線狀增大。而700℃炭化者,則E.S.E值會隨其log ρ值增加而呈直線狀減低。(4)孟宗竹炭板對甲醛吸附率(Y%),500℃炭化者為52.11-62.17%,700℃炭化者為46.31-60.35%。500℃炭化者,Y%與D之間無顯著性關係,但700℃炭化者,則Y%值會隨D值增加而呈直線狀增大。(5)孟宗竹炭板之熱傳導率(λ),500℃炭化者為0.04860-0.09109w/mk,700℃炭化者為0.07280-0.11330w/mk。且竹炭板之λ值與溫差(△T)間均有直線迴歸式關係,其斜率(a)亦會隨D值增加而呈直線狀增大。(6)孟宗竹炭板,500℃與700℃炭化者,D值為0.40-0.80g/cm^3者,均可通過CNS6532之耐燃三級標準之要求,尤其餘焰時間均為0。 |
英文摘要 | The main purpose of this study was to investigate the functional characteristics of moso bamboo charcoal boards. The bamboo charcoal were made from 4-6 years old, moso bamboo carbonized under different temperatures of 500℃and 700℃ in an earthen kiln. The bamboo charcoal was chopped into particle with 2-6mm diameter, then they were mixed with 10% of recycled pulps based on oven-dried weight of bamboo charcoals, then they were sprayed with 8% resin content of acrylic resin emulsion as a binder to manufacture target densities of 0.30-0.80g/cm^3 bamboo charcoal boards. Its functional characteristics were studied. The results were summarized as follows: (1) Moso bamboo charcoals carbonized under 500℃showed 84.3% carbon content, 9.79 for pH value and 7.0 for average quantity of resistance. However, 87.45% of carbon content, 10.15 of pH value and 1.13 of average quantity of resistance for the moso bamboo carbonized under 700℃. (2) In the case of moso bamboo charcoal boards carbonized under 700℃, it showed that the logarithmic value of resistivity (log p) decreased linearly with the increasing of bamboo charcoal density (D). (3) The electromagnetic shielding efficiency (E.S.E.) of moso bamboo charcoal boards increased linearly with the increasing of density. However, in the case of 700℃ carbonization temperature, the E.S.E. values decreased linearly with the increasing of log p values. (4) The formaldehyde absorption ratio (Y%) of moso bamboo charcoal board was 52.11-62.17% for 500℃carbonization charcoals, and 46.31-60.35% for 700℃carbonization charcoals. In the case of 500℃ carbonization temperature, it showed no significant relation between Y (%) and D values. However, in the case of 700℃ carbonization temperature the Y (%) values increased linearly with the increasing of D values. (5) The thermal conductivity (λ) values were 0.04860-0.09109W/mK for 500℃carbonization charcoals, and 0.07280-0.11330W/mK for 700℃carbonization charcoals. A linear relation existed between λ values and temperature difference (△T). It s slope (a) also increased linearly with the increasing of D values. (6) The fire-resistant properties of charcoals including 500℃ and 700℃ carbonization temperature could meet the requirement of "Grade 3 Incombustibility" as specified by CNS 6532 except that of 0.3g/cm^3 density. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。