文献类型：期刊文献

英文题名：Preparation and characterization of sodium silicate impregnated Chinese fir wood with high strength, water resistance, flame retardant and smoke suppression

作者：Li, Ping[1,2] Zhang, Yuan[1] Zuo, Yingfeng[1] Lu, Jianxiong[3] Yuan, Guangming[1] Wu, Yiqiang[1]

第一作者：Li, Ping

通信作者：Zuo, YF[1];Wu, YQ[1]

机构：[1]Cent South Univ Forestry & Technol, Coll Mat Sci & Engn, Changsha 410004, Hunan, Peoples R China;[2]Xiangnan Univ, Coll Art & Design, Chenzhou 423000, Hunan, Peoples R China;[3]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China

年份：2020

卷号：9

期号：1

起止页码：1043-1053

外文期刊名：JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T

收录：;EI(收录号：20195107871060);Scopus(收录号：2-s2.0-85076579775);WOS:【SCI-EXPANDED(收录号:WOS:000509333300101)】；

基金：This work was financially supported by the Key Laboratory of Biobased Material Science & Technology (Northeast Forestry University), Ministry of Education (SWZ-MS201917), Hunan Provincial Technical Innovation Platform and Talent Program in Science and Technology (2019RS2040), Major Science and Technology Program of Hunan Province (2017NK1010), National Natural Science Foundation of China (31770606), Scientific Research Project of Hunan Provincial Education Department (17C1500) and Hunan Province Innovation Foundation for Postgraduate (CX20190600).

语种：英文

外文关键词：Chinese fir wood; Sodium silicate; Phenol formaldehyde oligomer; Respiratory impregnation; Comparative study

摘要：To improve the properties and added value of Chinese fir wood, sodium silicate-modified Chinese fir wood (SSMCF) was prepared by respiratory impregnation method. Phenol formaldehyde oligomer-modified Chinese fir wood (PFOMCF) as control sample, the impregnation and reinforcement effects, water resistance of PFOMCF and SSMCF were compared. The results showed that the weight percentage gain, density growth rate, bending strength, compressive strength, and dimensional stability of SSMCF were clearly higher than those of PFOMCF, and the SSMCF showed a lower water absorption rate within 60 h. The impregnation and reinforcement effects, for SSMCF were better than those for PFOMCF. FT-IR, XRD, CONE, oligomer and TGA examinations were used to analyze the chemical structure, crystalline structure, flame retardancy, and heat resistance of these modified woods. The results indicated that Si-O-Si chemical bonding with high bond energy was formed in SSMCF, and there are possessed more hydrogen bonds in SSMCF than PFOMCF and that Si-O-Si chemical bonding with high bond energy was formed. Meanwhile, the weakened degree of the diffraction peak of SSMCF was much less than that of PFOMCF. These results explained the better mechanical properties and water resistance of SSMCF. Compared with PFOMCF, SSMCF had lower heat release rate (HRR), peak-HRR, mean-HRR, total heat release, smoke production rate, and total smoke production, and showed higher thermal decomposition temperature and residual rate. Inorganic sodium silicate was shown to be a better flame retardant, while SSMCF had good smoke suppression effects, thermal stability, and safety performance in the case of fire. (C) 2019 Published by Elsevier B.V.