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Mechanical property of lignin-modified phenolic foam enhanced by nano-SiO2 via a novel method

Yajun Guo, Lihong Hu, Caiying Bo, Qianqian Shang, Guodong Feng, Puyou Jia, Baofang Zhang, and Yonghong Zhou

Institute of Chemical Industry of Forest Products, CAF, Nanjing, China

 

E-mail: zhlh990907@sina.com

Abstract: Recently, the application of nano-SiO2 in composite materials has received wide attention. In this work, a new method was explored to prepare nano-SiO2 using phenol instead of other organic alcohols. The obtained nano-SiO2 was characterized by Fourier transform infrared spectroscopy (FT-IR) and by the zeta potential method. The phenol dispersant containing the prepared nano-SiO2 exhibited much higher reactivity toward formaldehyde than pure phenol. The preparation parameters of phenolic resin (PR) involved by nano-SiO2 were mild. This novel phenolic resin was successfully applied to fabricate a phenolic foam (PF) with a 153% increase in compressive strength.

Keywords: Nano-SiO2 ; Lignin ; Free formaldehyde ; Phenolic foam 

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-017-0317-2

 

Chemical Papers 72 (3) 763–767 (2018)

Thursday, June 04, 2020

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