文献类型：期刊文献

中文题名：温度变化对酚醛胶在竹材表面动态润湿性的影响

英文题名：Effects of temperature on the dynamic adhesive wettability of PF resin on bamboo surface

作者：王戈[1] 余养伦[2] 于文吉[2]

第一作者：王戈

通信作者：Wang, G.

机构：[1]国际竹藤网络中心;[2]中国林业科学研究院木材工业研究所

年份：2007

卷号：29

期号：3

起止页码：149-153

中文期刊名：北京林业大学学报

外文期刊名：Journal of Beijing Forestry University

收录：CSTPCD;;EI(收录号：20072510663113);Scopus(收录号：2-s2.0-34250330016);北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金："948"国家林业局引进项目(2003--4--27)

语种：中文

中文关键词：竹材;酚醛胶;温度;接触角;动态润湿性

外文关键词：bamboo wood, PF resin, temperature, contact angle, dynamic adhesive wettability

分类号：S781.9

摘要：为了探讨温度变化对酚醛胶在竹材表面润湿性的影响,该文采用测量动态接触角方法,用润湿模型分析了酚醛胶在20、608、0和100℃环境下,对层积材用竹片青、黄表面的润湿性和铺张渗透系数k值的影响.结果表明:酚醛胶在竹青和竹黄表面的润湿性差异不显著;随着温度的升高,接触角(起始和平衡接触角)增大,k值减小,竹材表面的润湿性、铺张和渗透性变差;但温度变化对竹青和竹黄表面k值影响的规律不同;随着温度的升高,竹材表面的酚醛胶会出现收缩、干瘪现象,温度越高,出现干瘪、收缩时间越短.
Dynamic contact angle analysis technique was used to investigate the effects of temperature on the dynamic adhesive wettability of phenol-formaldehyde （PF）resin on bamboo surface. By applying the wetting model, the spreading and penetration rate （k-value） of PF resin on bamboo surfaces （the outer and inner layers） at different temperatures （20, 60, 80, and 100℃ ） were compared. The results showed no significant differences in the wettability of PF resin between the outer and inner layers of bamboo. As temperature increased, the contact angles （both initial and equilibrium） also increased but the k-value decreased. These results indicated that the ability of the adhesive wetting on the bamboo surfaces for the PF resin was reduced as the temperature increased. However, the effects of temperature on the k-values were different between the inner and outer layers. Shrinking and shriveling occurred at elevated temperatures. And the higher the temperature was, the quicker the shrinking and shriveling occurred. The results obtained from this research provide guidance for the application and assembly time of resin on bamboo surfaces.