期刊论文

Effects of high temperature heat-treated on moisture absorption and dimensional stability of moisture resistance of urea formaldehyde resin modified Chinese fir

中文

中南林业科技大学学报

1673-923X

2018

38

9

126-130

10.14067/j.cnki.1673-923x.2018.09.020

湖南省林业科技计划项目“速生人工林木材增强与调色改性处理技术研究”（XLK201634） “十二五”国家科技支撑计划课题“人工林软质木材增强制造关键技术与示范”（2015BAD14B01） 湖南省科技计划专项“重要用材树种高效培育及利用技术研究与示范”（2016NK2160）

本校为第一机构

以脲醛（UF）树脂改性杉木为研究对象,采用高温过热蒸汽对其进行热处理,系统研究了热处理温度和时间对UF树脂改性杉木吸湿性和耐湿尺寸稳定性的影响规律。结果表明：与杉木对照材相比,UF树脂改性杉木吸湿性降低,耐湿尺寸稳定性提高;高温热处理能降低UF树脂改性杉木的吸湿性,提高其耐湿尺寸稳定性;与热处理时间相比,高温热处理温度对UF树脂改性杉木的吸湿性和耐湿尺寸稳定性的影响更大,随着热处理温度的升高,UF树脂改性杉木的平衡含水率、弦向湿胀率、径向湿胀率和体积湿胀率均呈先下降后升高的趋势;与杉木对照材相比,热处理UF树脂改性杉木的平衡含水率、弦向、径向湿胀率和体积湿胀率最大分别降...

In this study, the UF resin modified Chinese fir was treated in high temperature superheated steam to investigate the effects of temperature and processing time on wood moisture absorption and dimensional stability of moisture resistance. The results show that the moisture absorption was reduced, and dimensional stability of moisture resistance of Chinese fir was improved after UF resin impregnation. Moisture absorption and dimensional stability of moisture resistance of the UF resin modified Chinese fir were improved after high-temperature thermal treatment. Compared with the treatment time, ...