Process Optimization of Sodium Silicate Reinforced Chinese Fir Wood Based on Respiratory Impregnation
ZHOU Ya1, LI Ping1, ZHANG Yuan1, YUAN Guangming1, WANG Xiangjun2, WU Yiqiang1, ZUO Yingfeng1
1 College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China 2 Tianying (Guangdong) Wood Industry Technology Limited Company, Jiangmen 529700, China
Abstract: Usingthe Chinese fir wood as the modified base material and sodium silicate as the impregnation modifier, alternately applying “negative pressure-positive pressure” to the wood to produce the form of “outlet-liquid inlet”, thereby improving the permeability of the wood as well as increasing the amount and efficiency of the modifier in the wood. Taking the modulus, concentration and immersion time of sodium silicate as test factors, the optimum conditions for soaking Chinese fir wood with sodium silicate were optimized by orthogonal experiment. The results showed that when the modulus of sodium silicate modifier was 3.4, the concentration was 30%, and the immersion time was 1 h, the wood impregnation effect was the best, the modified materials were characterized by FTIR, XRD and TGA analysis. The results showed that the number of free hydroxyl groups in the modified material of Chinese fir decreased, the number of associated hydroxyl groups increased, and the characteristic absorption peak of Si-O-Si appeared. The modification of Chinese fir by sodium silicate was not only physical filling, but also chemical bond combination. Because of the swelling effect of sodium silicate and the formation of chemical bonds, the crystallinity of modified Chinese fir decreased. The thermal stability of the modified fir material increased, the initial decomposition temperature became lower, the mass loss in the carbonization stage was significantly reduced, and the final residual mass increased.
周亚, 李萍, 张 源, 袁光明, 王向军, 吴义强, 左迎峰. 基于呼吸浸渍法硅酸钠强化杉木木材工艺优化[J]. 材料导报, 2020, 34(18): 18171-18176.
ZHOU Ya, LI Ping, ZHANG Yuan, YUAN Guangming, WANG Xiangjun, WU Yiqiang, ZUO Yingfeng. Process Optimization of Sodium Silicate Reinforced Chinese Fir Wood Based on Respiratory Impregnation. Materials Reports, 2020, 34(18): 18171-18176.
1 Yao M, Yang Y, Song J, et al. Industrial Crops and Products, 2017, 107, 38. 2 Li P, Zuo Y F, Wu Y Q, et al. Journal of Forestry Engineering, 2016, 1(5), 133(in Chinese). 李萍, 左迎峰, 吴义强, 等. 林业工程学报, 2016, 1(5),133. 3 Sun H, Yan J R, Wu Y H, et al. Spectroscopy and Spectral Analysis, 2020, 40(1), 184(in Chinese). 孙海, 燕贾茹, 吴艳华, 等. 光谱学与光谱分析, 2020, 40(1),184. 4 Yue K, Chen Z, Lu W, et al. Construction and Building Materials, 2017, 15(154),956. 5 Dong Y M, Zhang S F, Li J Z. Journal of Forestry Engineering, 2017, 2(4),34(in Chinese). 董友明, 张世锋, 李建章. 林业工程学报, 2017, 2(4),34. 6 Huang Y, Fei B, Yu Y, et al. Bioresources, 2012, 8(1),272. 7 He G, Riedl B, Ait-Kadi A. Journal of Applied Polymer Science, 2003, 89(5),1371. 8 Lu J, Lin Z, Jiang J, et al. Journal of Forestry Research, 2005, 16(4), 293. 9 Bao F C, Lyu J X. Scientia Silvae Sinicae, 1992, 28(4), 336(in Chinese). 鲍甫成, 吕建雄. 林业科学, 1992, 28(4),336. 10 Bao F C, Lyu J X. Scientia Silvae Sinicae, 1992, 28(3), 237(in Chinese). 鲍甫成, 吕建雄. 林业科学, 1992, 28(3),237. 11 Wang X G, Jin W J, Deng Y H, et al. Journal of Southwest Forestry University, 2014,34(3), 84(in Chinese). 王向歌, 金菊婉, 邓玉和, 等. 西南林业大学学报, 2014,34(3), 84. 12 Wang F, Liu J, Lv W. Fire and Materials, 2017, 41(8), 1051. 13 He S, Lin L, Fu F, et al. Bioresources, 2014, 9(2), 1924. 14 Alexandre M, Dubois P. Materials Science and Engineering: Reports, 2000, 28(1-2), 1. 15 Li J. Wood science, Science Press, China, 2014(in Chinese). 李坚. 木材科学, 科学出版社, 2014. 16 Lu Y, Feng M, Zhao H, et al. Cellulose, 2014, 21(6), 4393. 17 Toba K, Yamamoto H, Yoshida M. Cellulose, 2013, 20(2), 633. 18 Lin M S, Jiang J C. Acta Energiae Solaris Sinica, 2008, 29(9), 1135(in Chinese). 林木森, 蒋剑春. 太阳能学报, 2008, 29(9), 1135.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2020, Vol. 34 
