季铵铜和铜唑预处理对马尾松单板层积材性能的影响  

Influences of pretreatment with alkaline copper quat and copper azole on properties of masson pine laminated veneer lumber

作　　者：金菊婉[1] 王锦涛[1] 姬宁 唐金华[1] 尹文秀[1] 谢承健 

机构地区：[1]南京林业大学材料科学与工程学院,江苏南京210037 [2]贵州省林业科学研究院,贵州贵阳550005

出　　处：《南京林业大学学报（自然科学版）》2016年第4期119-124,共6页Journal of Nanjing Forestry University：Natural Sciences Edition

基　　金：江苏省高校自然科学研究重大项目(11KJA220001);贵阳市科技计划项目(筑科合同[2012101]4-20号);江苏高校优势学科建设工程资助项目(PAPD)

摘　　要：为拓展单板层积材（ LVL）的应用领域，延长其使用寿命，通过季铵铜（ ACQ）和铜唑（ CuAz）常压浸渍单板，研制防腐马尾松单板层积材（ LVL），考察了防腐剂种类和载药量对LVL耐腐及物理力学性能的影响。结果表明：ACQ和CuAz预处理单板显著提高了马尾松LVL耐腐性，处理材达到强耐腐等级；处理材的弹性模量和静曲强度达到GB／T 20241—2006标准规定的结构用LVL中120E至160E级别要求，剪切强度达到50V－43H级别要求，浸渍剥离率仅为0．1％～0．8％。与未处理材相比，处理材的弹性模量略有增加，剪切强度及部分处理材的静曲强度有所下降；但处理材之间、处理材与对照材之间的力学性能均无显著差异。研究表明，ACQ和CuAz常压浸渍预处理单板是研制防腐马尾松LVL的一条有效途径。To expand the application and extend the service life of laminated veneer lumber （ LVL） products, this study focused on the development of preservative-treated masson pine LVL using the non-pressure veneer soaking treatment with alkaline copper quaternary （ ACQ ） and copper azole （ CuAz ） . The effects of veneer treatments with preservative types and loading levels on the decay resistance, physical and mechanical properties of LVL were investigated. The re-sults demonstrated that the treatments significantly enhanced the decay resistance of LVL. The bending properties of trea-ted LVL met the requirements of grade 120E to 160E, while the shear strength exceeded the specification of grade 50V-43H according to the standard GB/T 20241—2006. All treated LVLs had low delamination rate ranging from 0. 1% to 0-8%. The statistical analysis showed that there were no significant differences in physical and mechanical properties a-mong treated and untreated groups. The study suggested that ACQ and CuAz pretreatment is a promising method to make masson pine LVL with strong decay resistance and required physical and mechanical properties.

关 键 词：单板层积材 马尾松 季铵铜 铜唑 耐腐性能 物理力学性能 

分 类 号：S781[农业科学—木材科学与技术]