文献类型：期刊文献

英文题名：Characterization of Modified Phenol Formaldehyde Resole Resins Synthesized in Situ with Various Boron Compounds

作者：Chai, Yubo[1,2] Liu, Junliang[1] Zhao, Yong[2] Yan, Ning[2]

第一作者：柴宇博;Chai, Yubo

通信作者：Yan, N[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[2]Univ Toronto, Fac Forestry, 33 Willcocks St, Toronto, ON M5S 3B3, Canada

年份：2016

卷号：55

期号：37

起止页码：9840-9850

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20163902857312);Scopus(收录号：2-s2.0-84988625208);WOS:【SCI-EXPANDED(收录号:WOS:000384038000005)】；

基金：We acknowledge financial support from the Special Fund for Forest Scientific Research in Public Welfare (201404501) provided by the State Forestry Administration of the People's Republic of China and NSERC-discovery, the Natural Sciences and Engineering Research Council of Canada.

语种：英文

外文关键词：Curing - Fire resistance - Formaldehyde - Laboratories - Molecular structure - Phenolic resins - Phenols - Thermodynamic stability

摘要：In this study, three different boron compounds were used together with alkaline catalyst to synthesize phenol formaldehyde (PF) resole resins in situ. The resin curing behavior, molecular structure, bonding performance, and properties of resin-impregnated wood were investigated. Results showed that boron compound-modified PF resins had a lower degree of polymerization than the control PF resin made in the laboratory. The curing kinetics, molecular structure, and functional groups of the modified resins varied depending on the type of boron compounds used. The thermal stability of cured modified PF resins was slightly lower than that of laboratory-made control PF resin. Boron compound-modified PF resins exhibited dry and wet bonding strengths comparable to the those of the laboratory-made control PF resin. Wood impregnated using modified PF resins had comparable dimensional stability, mechanical properties and improved fire resistance than the wood impregnated using lab made control PF resin regardless the type of boron compounds used.