Position: Home > Articles > The Application of Linear Vibrational Friction in the Modification of Wood Surface
Journal of Northwest Forestry University
2019
(2)
227-233
线性振动摩擦作用下木材表面材色与硬度的变化
作 者：
张海洋;鞠泽辉;何倩;詹先旭;梅长彤;卢晓宁
单 位：
德华兔宝宝装饰新材料股份有限公司;南京林业大学材料科学与工程学院
关键词：
振动摩擦;改性木材;摩擦系数;木材碳化;表面密实
摘 要：
将线性振动摩擦技术应用于木材表面色泽改善和密实化的可行性,着重研究了不同压力和时间振动摩擦作用下的木材表面材色和硬度的变化规律,同时还建立了动态传热模型,研究了摩擦改性过程中的温度和摩擦系数的变化规律。结果表明,摩擦过程中的温度随着时间的延长达到动态平衡的状态,摩擦系数呈现先增大后降低的趋势。材色研究发现,随着摩擦压力的提高和摩擦时间的延长,木材表面的明度值降低较快,红绿轴色品指数有所提高,而黄蓝轴色品指数呈现先增大后降低的趋势;色彩角的研究显示改性后的木材呈现偏向于红黄的颜色。木材表面颜色的变化是由于摩擦生热导致的木材表面化学成分的变化所引起的,线性振动摩擦过程中的压力和时间对于木材表面颜色变化具有显著性影响。木材表面的硬度增加较大,2MPa摩擦30s的工艺条件下木材表面硬度增加达到70.9%。在改性木材厚度为15mm的情况下,改性后木材压缩率的大小随着压力和时间的增大而增大,2 MPa摩擦30s的工艺条件下其压缩率可达12.4%,木材表面的硬度也是随着压缩率的增大而增大。结果表明线性振动摩擦技术在木材表面材色和硬度改性方面的应用具有较大可行性。
译 名：
The Application of Linear Vibrational Friction in the Modification of Wood Surface
作 者：
ZHANG Hai-yang;JU Ze-hui;HE Qian;ZHAN Xian-xu;MEI Chang-tong;LU Xiao-ning;College of Materials Science and Engineering,Nanjing Forestry University;Dehua TB New Decoration Materials Co. Ltd;
单 位：
ZHANG Hai-yang%JU Ze-hui%HE Qian%ZHAN Xian-xu%MEI Chang-tong%LU Xiao-ning%College of Materials Science and Engineering,Nanjing Forestry University%Dehua TB New Decoration Materials Co. Ltd
关键词：
vibrational friction;;modified wood;;friction coefficient;;wood carbonization;;densified surface
摘 要：
The feasibility of linear vibrational friction used as a wood surface modification technique was studied in this paper with the emphasis of the changes wood color and surface hardness.Meanwhile,a dynamic heat transfer model was established to study the interface temperature and friction coefficient during modification.The temperature in the interface reached a state of dynamic equilibrium with the extension of time and the friction coefficient first increased and then decreased.The results indicated that,the lightness index L*decreased and the red/green index a*raised as the friction pressure and time increased.The yellow/blue index b*first increased and then decreased as the friction time prolonged.The calculation of the color angle showed that the modified wood surface was partial to red and yellow.The chemical changes occurred due to the friction heat produced during the wood surface modification resulted in the change of wood surface color,and the friction pressure and time had significant influence on the final color.The hardness of the wood surface was improved a lot and the maximum improvement was 70.9% with 2 MPa friction pressure and 30 sfriction time.The compression ratio increased with the friction pressure and time and reached 12.4% with 2 MPa friction pressure and 30 sfriction time.The surface hardness of the wood also increased with the compression ratio.The experimental results showde that the application of linear vibration friction technology in the modification of wood surface color and hardness was feasible.
导出引用
计量
文章访问数: 17
HTML全文浏览量: 0
PDF下载量: 0
所属期刊
