林业工程学报2016，Vol.1Issue(5)：26-30,5.DOI:10.13360/j.issn.2096-1359.2016.05.005
等离子体处理对杨木单板层积材性能的影响
Effects of plasma treatment on properties of poplar LVL
摘要
Abstract
The non⁃structural laminated veneer lumber ( LVL) was prepared by poplar veneers treated with atmospheric pressure plasma. This study focused on investigating the effects of plasma treatment power and rate on properties of LVL. It was found that the atmospheric pressure plasma treatment significantly affected the mechanical properties of LVL. The results demonstrated that after the atmospheric pressure plasma treatment, the bonding strength of poplar LVL improved significantly, and the impregnated peel ratio of LVL decreased by 59.3% when the treatment power of 4.5 kW and a rate of 2 m/min were used. Besides, the atmospheric pressure plasma treatment could also enhance surface wettability of LVL because it can profoundly influence the physical and chemical properties of poplar veneer surface. When poplar LVL was treated under 6 kW and 8 m/min, the initial contact and balance angles of urea formaldehyde resins at the surface of LVL decreased by 25.4% and 36.8%, respectively. More information was revealed by the FTIR analysis. It was indicated that the amounts of surface functional groups such as carbonyl, keto, conjugated carbonyl, carboxyl groups and C—O increased through the FTIR analysis. The improvement of surface wettability and increase of oxygen⁃containing functional groups induced by the atmospheric pressure plasma treatment were both beneficial to the enhancement of the adhesive properties of poplar LVL. The comprehensive analysis of chemistry and physics confirmed that mechanical properties of poplar LVL can be greatly enhanced by the atmospheric pressure plasma treatment.关键词
常压冷等离子体/单板层积材/浸渍剥离/接触角Key words
atmospheric pressure plasma/laminated veneer lumber/delamination/contact angle分类
农业科技引用本文复制引用
阮氏凤,曹倚中,周晓燕,戴振宇,阮光中..等离子体处理对杨木单板层积材性能的影响[J].林业工程学报,2016,1(5):26-30,5.基金项目
国家林业公益性行业科研专项（201304507）；江苏高校优势学科建设工程资助项目（PAPD）。 （）
