摘要
对脲醛树脂浸渍杨木进行热压压缩和干燥定型工艺试验,研究热压温度对其干燥工艺和性能的影响。结果表明:热压温度对浸渍改性杨木压缩材的干燥工艺和性能影响显著,随温度升高,干燥速度加快、变形回复率降低、吸水厚度膨胀率逐渐减小、抗弯强度和抗弯弹性模量逐步降低,综合各项性能和干燥工艺,热压干燥温度取140℃为宜。
The technical experiment of hot-pressing compression and deformation fixation of Poplar wood Impregnated with Urea- formaldehyde resin was carried out, and Influence of the hot-pressing temperature on technology and performance was discussed. The result shows that the drying speed were improved and deformation springback, but thickness swelling of water-absorbing, modulus of elasticity and the modulus of rupture decreased with increasing the temperature, the optimization hot-pressing temperature is 140℃.
出处
《木材加工机械》
2015年第1期8-12,共5页
Wood Processing Machinery
基金
河北省高等学校科学技术研究项目资助(Z2011170)
河北省科技支撑计划项目(项目编号:14274001D)
关键词
热压温度
杨木
脲醛树脂
浸渍
性能
temperature
Poplar wood
urea- formaldehyde resin
impregnation
compression
performance
