Open Access
ARTICLE
Mechanical Properties and Fire Retardancy of Wood Flour/High-Density Polyethylene Composites Reinforced with Continuous Honeycomb-Like Nano-SiO2 Network and Fire Retardant
Haiyang Zhou1,2, Xiaoyu Wang3, Xiaolong Hao1,2, Qingwen Wang1,2,*, Rongxian Ou1,2,*
1 Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China
2 Guangdong Laboratory for Lingnan Modern Agricultural Science and Technology, Guangzhou, 510642, China
3 College of Arts, South China Agricultural University, Guangzhou, 510642, China
* Corresponding Authors: Qingwen Wang. Email: ; Rongxian Ou. Email:
Journal of Renewable Materials 2020, 8(5), 485-498. https://doi.org/10.32604/jrm.2020.010263
Received 22 February 2020; Accepted 02 April 2020; Issue published 29 April 2020
Abstract
The mechanical properties of wood flour/high-density polyethylene
composites (WPC) were improved by adding a small amount of nano-SiO
2 to
obtain a network-structured WPC with a continuous honeycomb-like nano-SiO
2
network. The wood flour was modified with a fire retardant (a mixture of sodium
octabonate and amidine urea phosphate) to improve its fire retardancy. The flexural properties, creep resistance, thermal expansion, and fire retardancy of the
WPC were compared to a control (WPC
CTRL) without nano-SiO
2 or fire retardant.
The flexural strength and modulus of the WPC containing only 0.55 wt.% nano-SiO
2 were 6.6% and 9.1% higher than the control, respectively, while the creep
strain and thermal expansion rate at 90°C were 33.8% and 13.6% lower, respectively. The cone calorimetry tests revealed that the nano-SiO
2 network physically
shielded the WPC, giving it lower heat release and smoke production rates. The
thermal expansion was further decreased by incorporating fire retardants into the
WPC, which showed the lowest total heat release and total smoke production and
the highest mass retention. This study demonstrates a facile procedure for producing WPC with desired performances by forming a continuous honeycomb-like
network by adding a small amount of nanoparticles.
Keywords
Cite This Article
Zhou, H., Wang, X., Hao, X., Wang, Q., Ou, R. (2020). Mechanical Properties and Fire Retardancy of Wood Flour/High-Density Polyethylene Composites Reinforced with Continuous Honeycomb-Like Nano-SiO
2 Network and Fire Retardant.
Journal of Renewable Materials, 8(5), 485–498. https://doi.org/10.32604/jrm.2020.010263
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