玻璃纤维线植入方式对单板层积材力学性能影响  

Influence of glass fiber implantation on the mechanical properties of poplar laminated veneer lumber

作　　者：崔举庆[1] 黄河浪[1] 韩书广[1] 何元康[1] 蒋贵杨 

机构地区：[1]南京林业大学材料科学与工程学院,南京210037 [2]宿迁市金板木业有限公司,江苏宿迁223700

出　　处：《林业工程学报》2016年第5期40-44,共5页Journal of Forestry Engineering

基　　金：国家自然科学基金(31470590;31400502);江苏省科技支撑计划(富民强县)项目(BN2014068);江苏省企业研究生工作站项目

摘　　要：为了提高速生材制造单板层积材(LVL)的强度和拓宽其在结构材领域的应用,进行了以玻璃纤维线为底线、辅助聚乙烯纤维线为面线植入杨木单板以强化LVL力学性能的试验,分别探讨了玻璃纤维线线性表面单层植入及其表面处理、植入间隔,网状植入和线性双层植入杨木单板方式对LVL力学性能的影响。结果表明:通过硅烷偶联剂表面处理、减小植入间隔、网状植入和线性表面双层植入玻璃纤维进一步提高了LVL的弹性模量、静曲强度和冲击韧性,其中线性表面双层顺纹植入玻璃纤维线的效果最好,弹性模量提高42.5%,静曲强度提高51.4%,冲击韧性提高34.8%。研究结果对高效利用速生杨木制造高强度高模量LVL具有一定的参考价值。At present, poplar, eucalyptus trees, bamboo, and other last growing species are the main raw materials for the manufacture of LVL. Due to the low density and relatively low mechanical property of the fast growing species, the mechanical properties of the LVL made from this species cannot meet the requirements tor application as the engineering material. To improve the mechanical properties of LVL and expand the application of the fast growing trees in the field of structural material, the poplar veneer were reintoreed by implanting the glass fiber as the baseline and polyethylene fiber as the face line and used for LVL fabrication, lnfluenee of different implantation methods and LVL assembling method, including using line layer, mesh layer, and two line layer implanted veneers on the top and bottom of the LVL, on the mechanical properties of resulting LVL were investigated. The results showed that the surface treatment of glass fiber with silane coupling agent, decreasing implantation interval, implantation with mesh in one veneer, and assembling with topbottom two line layer implanted veneers remarkably improved the modulus of elasticity, static bending strength and impact toughness of the resuhed LVL. Moreover, the LVL assembled with top-bottom two line layer implanted veneers demonstrated the highest mechanical properties with the modulus of elasticity and static bending strength increased by 42.5% and 51.4%, respectively. And its impact toughness increased by 34.8%. This study will promote the etficient utilization of fast growing poplar tree for LVL fabrication with high strength and high modulus.

关 键 词：杨木单板 玻璃纤维线 植入方式 LVL 力学性能 

分 类 号：S784[农业科学—林学]