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標題: 不同改質單板之單板層積材的基本性質與抗白蟻性能
Fundamental properties and anti termite performance of laminated veneer lumber made of different treated veneer
作者: Wen-Jung Lai
關鍵字: 單板層積材;抗白蟻性;物理性質;機械性質;Laminated veneer lumber;Termite resistance;Physical properties;Mechanical properties
引用: 中華民國國家標準CNS 1349(2014)普通合板。經濟部標準檢驗局。 中華民國國家標準CNS 3000(2011)加壓注入防腐處理。經濟部標準檢驗局。 中華民國國家標準CNS 11818(2014)單板層積材。經濟部標準檢驗局。 中華民國國家標準CNS 15756(2014)木材抗白蟻性試驗法。經濟部標準檢驗局。 日本木材保存協会規格JWPS-TW-G.1(2004)接?剤混入処理用木材防蟻剤室内防蟻?力試験方法及性能基準。 王松永(1993)木材物理學。國立編譯館主編。 王松永(2012)酚樹脂處理木材之物理性質、耐腐及耐白蟻性探討。台大實驗林研究報告 26(2):151-161。 今村祐嗣(1991)木材変木材時代 ,日本木材学会編,海青社出版,p130-136。 台灣區合板製造輸出業同業公會(2013)台灣區合板製造輸出業同業公會20pp。 李志璇(2012)三種熱處理介質對孟宗竹基本性質之影響。國立中興大學森林學系碩士論文。 沈峻研、林亞立(2011)以熱處理桉樹單板製作合板之性質評估。宜蘭大學生物資學刊7(1): 41-48。 莊保伸一(2006)Ⅲ木材製品活用事例,12.樹脂處理,木材工業61(11):553-555 童信和、楊詩弘(2012)室內裝修設計施工之木作工程產生蟲害之原因探討。台灣物業管理學會第六屆研究成果發表會。 賴玟融、楊德新(2013) 市售防蟲藥劑處理單板層積材之抗白蟻性與機械性質評估。2013中華林產事業協會學術論文暨研究成果研討會。 蕭于祐、林亞立(2012)以熱處理楊樹單板製作層積材之性質評估。宜蘭大學生物資學刊 8(2): 27-37。 Adawiah, M. A. R., A. Zaidon, F. A. N. Izreen, E. S. Bakar, S. M. Hamami and M. T. Paridah (2012) Addition of urea as formaldehyde scavenger for low molecular weight phenol formaldehyde-treated Compreg wood. Journal of Tropical Forest Science. 24(3):348-357. 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本研究以國內為合板與單板層積材製造常用之放射松(Pinus radiata)單板為材料,透過硼酸處理,低分子量酚甲醛樹脂,呋喃甲醇改質,熱處理製程改質單板與生物忌避型藥劑之添加,製成單板層積材評估其抗白蟻性及其物理與機械性質,提出一最適化製程,供國內機關業者參考。結果顯示,硼酸處理方面,以單板注入硼酸溶液其吸收量達3 kg/m3時具有抗白蟻性,其密度、平衡含水率、吸濕性、抗彎強度及抗壓強度有上升之情形,膠合抗剪強度會下降。將硼酸加入於膠合劑之處理方式,對LVL之密度、平衡含水率、吸濕性、抗彎強度影響並不顯著,但會使膠合抗剪強度及抗壓強度下降,且抗白蟻性比單板處理者差。酚甲醛樹脂處理方面,以單板進行酚甲醛樹脂處理其注入量達148.2 kg/m3時具抗白蟻性,密度、抗彎強度及抗壓強度有上升之情形,平衡含水率、吸濕性及膠合抗剪強度則會下降。呋喃甲醇處理方面,以單板注入呋喃甲醇溶液其注入量達7.5 kg/m3時具有抗白蟻性,密度、抗彎強度及抗壓強度隨著呋喃甲醇之注入量上升而增加,平衡含水率及吸濕性隨著呋喃甲醇之注入量增加而下降,呋喃甲醇注入會使LVL之膠合抗剪強度下降,但並不隨注入量增加而改變。熱處理方面,LVL之抗白蟻性並不因熱處理而得到改善,密度、平衡含水率、抗彎強度、膠合抗剪強度,隨著熱處理溫度增加而下降,而抗壓強度則有上升之情形,吸濕性也有降低之效果,其LVL熱處理製程之強度下降幅度較單板熱處理低,較推薦做為熱處理改質之製程。生物忌避型藥劑處理方面,於藥劑添加量為1.0%時具抗白蟻性,且藥劑添加至膠合劑並不影響LVL之物理性質、尺寸安定性及機械性質。

The purpose of this study was to evaluate the physical-mechanical performance and termite resistance of modified laminted veneer lumber (LVL), including boric acid treatment, low molecular weight phenol formaldehyde resin treatment, furfurylation, heat-treated method and biological repellent treatment. Optimized processes to improve the termite resistance of LVL was also investigated.
Results indicated that veneer of boric acid treatment has termites resistance while its retention reach 3 kg/m3, and its density, equilibrium moisture content, hygroscopicity, bending strength and compressive strength were increased, but the bonding shear strength was decreased.The way of adding boric acid to the adhesives was no significant difference for density, equilibrium moisture content and bending strength, however, the bonding shear and compressive strength were decreased, and the termite resistance was less than the boric acid treated-veneer. Retention of veneer impregnated with phenol formaldehyde resin (PF) and furfuryl alcohol (FA) were 148.2 kg/m3 and 7.5 kg/m3, respectively. Both of these two treatments have improved the properties with regard equilibrium moisture content (EMC), hygroscopicity, bending strength, compressive strength and resistance against termites. No significant difference was found on improving termite resistance with heat-treated LVL. In addition, the bending and bonding strength of LVL were decreased. However, the EMC, hygroscopicity and compressive strength of LVL were improved after heat treatment. The type of LVL treatment was better than the type of veneer treatment in strength remaining. Well termite resistance was found by adding 1% biological repellent to LVL and not affect its physical properties, dimensional stability and mechanical properties.
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