南京林业大学学报（自然科学版）2016，Vol.40Issue(4)：125-130,6.DOI:10.3969/j.issn.1000-2006.2016.04.020
表面阻尼涂饰意杨单板的动态力学特性
Dynamic mechanical characteristics of poplar veneers painted with damping coatings
摘要
Abstract
In order to develop wood⁃based damping plywood with anti⁃slip & vibration structural properties, damping coatings were used to treat poplar veneers. Two damping constructions, i.e., freedom and constrained, were tested. The dynamic mechanical properties of the veneer⁃based damping constructions were analyzed using the dynamic thermo⁃me⁃chanical analysis ( DMA) method. The research results showed that: ① Veneer⁃based damping constructions exhibited good damping performance at room temperature by applying damping coatings on veneer surface. ② The thickness of cured coating on veneer surface significantly influenced the damping performance, i. e., the thicker paint layer led to greater combined loss factor (η) and wider effective damping temperature range. With 0.5-2.0 mm thick freedom damp⁃ing paints,η values were all greater than 0. 10 with a peak greater than 0. 30. Constrained veneer⁃based damping con⁃struction had the maximumηvalue of 0.12. ③Veneer⁃based damping constructions had similar time⁃temperature super⁃position ( TTS) behaviors to normal viscoelastic polymers.④ The freedom construction showed better damping perform⁃ance than the constrained system. The aforementioned research findings are helpful for the manufacturing of the damping structural plywood. The research suggests to make damping structural plywood using the freedom construction with the 1.5-2.0 mm thick coating layer.关键词
意杨单板/阻尼涂饰/动态热机械特性/温频等效Key words
poplar veneer/damping coating/dynamic mechanical characteristics/time-temperature superposition ( TTS)分类
农业科技引用本文复制引用
徐信武,杨雪莲,吕吉宁,陈玲,孙妍,徐舒..表面阻尼涂饰意杨单板的动态力学特性[J].南京林业大学学报（自然科学版）,2016,40(4):125-130,6.基金项目
江苏省高校自然科学研究重大项目（13KJA220003）；江苏高校优势学科建设工程资助项目 （）
