POLYMERS AND POLYMER MATRIX COMPOSITES |
|
|
|
|
|
Study on Phenol Formaldehyde Resin Modified Chinese Fir Wood Based on In-situ Impregnation Method |
LI Ping1, ZHANG Yuan2, WU Yiqiang2, YUAN Guangming2, LI Xianjun2, ZUO Yingfeng2
|
1 College Furniture and Art Design, Central South University of Forestry and Technology, Changsha 410004, China 2 College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004,China |
|
|
Abstract Chinese fir wood was modified by in-situ impregnation method with phenol, formaldehyde and sodium hydroxide as modifiers. The effects of impregnation pressure, impregnation temperature, impregnation time and in-situ curing temperature on impregnation effect, strengthening effect and dimension stabilization effect of modified Chinese fir wood were discussed. And the chemical structure, internal morphology, crystalline structure and heat resistance of modified Chinese fir wood were characterized. The results showed that the modified Chinese fir wood had the best impregnation effect, strengthening effect and dimensional stability effect when the impregnation pressure was 0.5 MPa, the impregnation tempe-rature was 50 ℃, the impregnation time was 32 h and the in-situ curing temperature was 80 ℃. In-situ reaction of phenol and formaldehyde in Chinese fir wood not only fills the internal pits, cell cavities and cell interstices, but also forms hydrogen bonds and chemical bonds with reactive hydroxyl groups in Chinese fir wood, which effectively improved the mechanical properties and water resistance. The immersion of phenol formaldehyde resin disturbed the well-ordered microfibrils in the cellulose crystalline zone of Chinese fir wood, weakened the intermolecular interaction of cellulose molecular chains, and reduced the crystallinity to a certain extent. After in-situ impregnation modification with phenol formaldehyde resin, the heat resistance of modified Chinese fir wood was significantly improved, and the use safety of Chinese fir products was significantly improved.
|
Published: 25 November 2021
Online: 2021-12-13
|
|
Fund:Hunan Provincial Technical Innovation Platform and Talent Program in Science and Technology, PR China (2019RS2040), the National Natural Science Foundation of China (31770606), Major Science and Technology Program of Hunan Province (2017NK1010) and Scientific Research Project of Hunan Provincial Education Department (17C1500). |
About author: Ping Lireceived her Ph.D. degree in engineering from Central South University of Forestry and Technology in 2020. She is currently a lecturer in Central South University of Forestry and Technology. Her research inte-rests are wood functional improvement and application. Yingfeng Zuoreceived his Ph.D. degree in enginee-ring from Northeast Forestry University in 2014. He is currently an associate professor in Central South University of Forestry and Technology. His research interests are wood functional improvement and biomass composite materials. |
|
|
1 Li Yumin, Feng Pengfei.World Bamboo and Rattan, 2019, 17(6), 45(in Chinese).
李玉敏, 冯鹏飞.世界竹藤通讯, 2019, 17(6), 45.
2 Li Ping, Zuo Yingfeng, Wu Yiqiang, et al. Journal of Forestry Enginee-ring, 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 Tu Hongtao, Sun Yujun, Liu Suzhen, et al. Journal of Central South University of Forestry & Technology, 2015, 35(7), 94(in Chinese).
涂宏涛, 孙玉军, 刘素真, 等.中南林业科技大学学报, 2015, 35(7), 94.
4 Yue K, Chen Z, Lu W, et al. Construction and Building Materials, 2017, 154,956.
5 Zhang Y, Li P, Wu Y, et al. Journal of Renewable Materials, 2020, 8(11), 1473.
6 Huang Y, Fei B, Yu Y, et al. BioResources, 2012, 8(1), 272.
7 Dong Youming, Zhang Shifeng, Li Jianzhang.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.
8 Zuo Yingfeng, Wu Yiqiang, Zhang Xinli, et al. Materials Reports B:Review Papers, 2015, 29(12), 7(in Chinese).
左迎峰, 吴义强, 张新荔, 等.材料导报:综述篇, 2015, 29(12), 7.
9 Furuno T, Imamura Y, Kajita H.Wood Science and Technology, 2004, 37(5), 349.
10 Acosta A P, Labidi J, Schulz H R, et al. Forests, 2020, 11(7), 768.
11 Mubarok M, Militz H, Stéphane Dumaray, et al. Wood Science and Technology, 2020, 54(4), 479.
12 Dong Xiaoying, Li Yongfeng, Ma Lijun, et al. Journal of Building Materials, 2015, 18(6), 1028(in Chinese).
董晓英, 李永峰, 马立军, 等.建筑材料学报, 2015, 18(6), 1028.
13 Li Y, Liu Z, Dong X, et al. International Biodeterioration & Biodegradation, 2013, 84, 401.
14 He S, Lin L, Fu F, et al. BioResources, 2014, 9(2), 1924.
15 Hou Ruiguang, Li Xianjun, Liu Yuan, et al. Journal of Central South University of Forestry & Technology, 2015, 35(1), 122(in Chinese).
侯瑞光, 李贤军, 刘元, 等.中南林业科技大学学报, 2015, 35(1), 122.
16 Kumar S.Wood and Fiber Science, 2007, 26(2), 270.
17 Olsén P, Herrera N, Berglund L A.Biomacromolecules, 2020, 21(2), 597.
18 Li P, Zhang Y, Zuo Y, et al. Journal of Materials Research and Techno-logy, 2020, 9(1),1043.
19 Leppänen K, Andersson S, Torkkeli M, et al. Cellulose, 2009, 16(6), 999.
20 Toba K, Yamamoto H, Yoshida M.Cellulose, 2013, 20(2), 633.
21 Zhang Y, Li P,Wu Y, et al. Journal of Renewable Materials, 2020, 8(11),1473. |
|
|
|