文献类型：期刊文献

英文题名：Effect of Core Temperature on Some Important Properties of Poplar Scrimber Boards during the Heat Curing Process

作者：Rao, Fei[1] Wei, Jinguang[1] Qi, Yue[1] Zhang, Yahui[1] Yu, Wenji[1]

第一作者：Rao, Fei

通信作者：Zhang, YH[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing, Peoples R China

年份：2019

卷号：69

期号：3

起止页码：210-216

外文期刊名：FOREST PRODUCTS JOURNAL

收录：;EI(收录号：20193907480591);Scopus(收录号：2-s2.0-85072659070);WOS:【SCI-EXPANDED(收录号:WOS:000484574100006)】；

基金：The authors wish to thank the following: Cai Wanpei for the experimental assistance and the National Nonprofit Institute Research Grant of CAFINT (CAFYBB2018SY031) for financially supporting this work.

语种：英文

外文关键词：Formaldehyde - Mechanical properties - Phenolic resins - Resins

摘要：In this study, poplar wood and a phenol-formaldehyde (PF) resin were used to produce a large-scale scrimber product by a combined cold pressing and heat curing method. The water resistance, mechanical properties, and formaldehyde emission of the scrimber boards prepared at different core temperatures (100 degrees C, 110 degrees C, 115 degrees C, and 120 degrees C) were investigated. The results showed that the peak core temperature had a significant effect on the scrimber performance. The thickness swelling rate and width swelling rate of the scrimber boards prepared at a core temperature of 100 degrees C were significantly higher than other samples. The formaldehyde emission from the surface layer of the scrimber boards prepared at a high core temperature (115 degrees C and 120 degrees C) was much lower than that at a core temperature of 100 degrees C and 110 degrees C. These results can be explained by the correlation between curing degree and temperature of the PF resin in the scrimber. With increasing core temperature, the modulus of rupture, compression strength, and horizontal shear strength of the scrimber boards first increased and then decreased, suggesting that core temperature during the heat curing process also played an important role in determining mechanical properties. The scrimber boards with the best mechanical properties were prepared at a core temperature of 115 degrees C. The results of the study demonstrated that the optimal core temperature necessary to produce a low-cost and high-performance scrimber was 115 degrees C.