A novel DOPO-g-KH550 modification wood fibers and its effects on the properties of composite phenolic foams

作者：Ma, Yufeng^*; Geng, Xiang; Zhang, Xi; Wang, Chunpeng; Chu, Fuxiang

来源：Polish Journal of Chemical Technology, 2018, 20(2): 47-53.

DOI：10.2478/pjct-2018-0022

• DOPO
• Wood Fiber
• G-amino propyl triethoxy silane
• Composites
• Characterization

A novel 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) graft gamma-amino propyl triethoxy silane (KH550) was synthesized and introduced on the surface of wood fiber. Finally DOPO-g-KH550 treated wood fiber (DKTWF) was used to prepare DKTWF composite phenolic foams (DKTWFCPF). The structures of DOPO-g-KH550 was acknowledged by Fourier transform infrared (FT-IR) and nuclear magnetic resonance (H-1-NMR). The structures of DKTWF were confirmed by FT-IR. Compared with wood fiber, the diffraction peaks' position was basically unchanged, but the crystallinity was slightly increased and thermal stability were dramatically improved, T-5% and T-max increased by 21.9 degrees and 36.1 degrees respectively. But the char yield (800 degrees) was slightly reduced. With the dosage of DKWF, there were different degrees of improvement including the mechanical properties, flame retardancy and microstructure of DKTWFCPF. Comprehensive analysis, the interfacial compatibility was significantly improved between DKTWF and phenolic resin, and the suitable content of DKTWF was 4%.

• 出版日期2018-6
• 单位中国林业科学研究院; 中国林业科学研究院林产化学工业研究所; 南京林业大学