文献类型：期刊文献

中文题名：热压时间和温度对酚醛树脂型超薄高密度纤维板性能的影响

英文题名：Effects of Hot-Pressing Time and Temperature on Properties of Phenolic Resin Ultra-Thin High Density Fiberboards

作者：张镭[1] 邹淼[1] 唐启恒[1] 郭文静[1]

第一作者：张镭

机构：[1]中国林业科学研究院木材工业研究所,北京100091

年份：2023

卷号：37

期号：1

起止页码：68-73

中文期刊名：木材科学与技术

外文期刊名：Chinese Journal of Wood Science and Technology

收录：CSTPCD;;北大核心:【北大核心2020】；

基金：“十四五”国家重点研发计划课题“超薄纤维板连续化制造关键技术”(2021YFD2200604)。

语种：中文

中文关键词：超薄高密度纤维板;酚醛树脂;热压条件;弯曲强度;24 h吸水厚度膨胀率

外文关键词：ultra-thin high density fiberboard;phenolic resin;hot pressing conditions;modulus of rupture;24 h water absorption thickness swelling rate

分类号：TS653.6

摘要：超薄高密度纤维板作为纤维板行业的新兴产品,因其超薄的厚度(<1.5 mm)在胶合板贴面、建筑装饰装修等饰面领域广泛应用。以酚醛树脂(PF)为胶黏剂,探讨热压时间(60、90和120 s)和热压温度(150、170和190℃)变化对1 mm厚PF超薄高密度纤维板的弯曲强度、内结合强度和24 h吸水厚度膨胀率的影响,并使用扫描电子显微镜观察纤维和树脂结合状况。研究结果表明,在一定范围内随着热压时间的延长和热压温度的升高,纤维板的性能逐渐提高;当热压时间为120 s,热压温度为190℃时,纤维板的性能最优,其弯曲强度达到88.5 MPa,内结合强度达到5.70 MPa,24 h吸水厚度膨胀率为6.8%,达到团体标准T/CNFPIA 3007—2019《超薄高密度纤维板》的要求。
As a new product in the fiberboard industry,ultra-thin high density fiberboards have been widely used as veneers for the plywood furnishing,architectural decoration,and other fields because of the ultra-thin thickness(about 1.5 mm).In this study,phenol-formaldehyde resin(PF)was used as an adhesive to investigate the effects of the hot-pressing time(60,90,and 120 s)and temperature(150,170,and 190℃)on the modulus of rupture,internal bonding strength,and the 24 h water absorption thickness swelling rate(24 h TS)of 1 mm PF ultra-thin fiberboards.The scanning electron microscope was used to observe the bonding situation between fiber and resin.The results showed that with the extension of the hot-pressing time and the increase of hot-pressing temperature within a certain range,the performance of fiberboards was gradually improved.When the hot-pressing time was 120 s and the hot-pressing temperature was 190℃,the performance of fiberboards was the best.The modulus of rupture reached 88.5 MPa.The internal bonding strength reached 5.70 MPa and the 24 h TS was 6.8%.These properties meet the requirements of the standard T/CNFPIA 3007—2019 Ultra-Thin High Density Fiberboard.