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Fabrication of Superhydrophobic Mg/Al Layered Double Hydroxide (LDH) Coatings on Medium Density Fiberboards (MDFs) with Flame Retardancy

1
School of Engineering, Zhejiang A&F University, Hangzhou 311300, China
2
Zhejiang Academy of Forestry, Hangzhou 310023, China
*
Authors to whom correspondence should be addressed.
Materials 2018, 11(7), 1113; https://doi.org/10.3390/ma11071113
Received: 16 May 2018 / Revised: 13 June 2018 / Accepted: 21 June 2018 / Published: 29 June 2018
The hydrophilicity and flammability of fiberboards have limited their real-life applications. In this study, a facile strategy for preparing the multifunctional coatings with superhydrophobicity and flame retardancy on medium density fiberboards (MDFs) has been investigated. The superhydrophobic and flame-retardant coating on the MDF surface was obtained by depositing polydimethylsiloxane (PDMS) and 1H, 1H, 2H, 2H-perfluorodecyltrichlorosilane (FDTS)-modified Mg/Al layered double hydroxide (LDH) particles step by step. The as-prepared coating exhibited superhydrophobic properties with a water contact angle (WCA) of ~155° and good self-cleaning properties. Furthermore, the limiting oxygen index (LOI) value of the superhydrophobic MDFs increased by 60.4% as compared to that of the pristine MDFs, showing improved flame retardancy. The peak heat release rate (PHRR) and total heat release (THR) of MDFs decreased after coating with [email protected]/Al LDH, suggesting that the superhydrophobic coating decreased the fire growth speed and risk of fire hazard of MDFs. This coating with multiple functions opens a new avenue for the protection and functionalization of MDFs. View Full-Text
Keywords: medium density fiberboard; Mg/Al LDH; FDTS; superhydrophobicity; flame retardancy medium density fiberboard; Mg/Al LDH; FDTS; superhydrophobicity; flame retardancy
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Wang, Z.; Shen, X.; Qian, T.; Xu, K.; Sun, Q.; Jin, C. Fabrication of Superhydrophobic Mg/Al Layered Double Hydroxide (LDH) Coatings on Medium Density Fiberboards (MDFs) with Flame Retardancy. Materials 2018, 11, 1113.

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