Fabrication of Superhydrophobic Mg/Al Layered Double Hydroxide (LDH) Coatings on Medium Density Fiberboards (MDFs) with Flame Retardancy.
Fabrication of Superhydrophobic Mg/Al Layered Double Hydroxide (LDH) Coatings on Medium Density Fiberboards (MDFs) with Flame Retardancy.
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DOI：
10.3390/ma11071113
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发表时间：
2018-06-29
期刊：
影响因子：
--
通讯作者：
Jin C
中科院分区：
文献类型：
--
作者：
Wang Z;Shen X;Qian T;Xu K;Sun Q;Jin C
纤维板的亲水性和易燃性限制了其实际应用。本研究以中密度纤维板（MDF）为基材，探索了一种制备具有超疏水性和阻燃性的多功能涂料的方法。采用聚二甲基硅氧烷（PDMS）和1H，1H，2 H，2 H-全氟癸基三氯硅烷（FDTS）改性的层状双氢氧化镁（LDH）颗粒，在玻璃表面分步沉积得到超疏水阻燃涂层。所制备的涂层具有超疏水性能，水接触角（WCA）约为155°，并具有良好的自清洁性能。此外，极限氧指数（LOI）值的超疏水MDFs增加了60.4%相比，原始MDFs，表现出改善的阻燃性。经PDMS@ FDTS-Mg/Al LDH包覆后，MDFs的峰值热释放速率（PHRR）和总热释放速率（THR）降低，表明超疏水涂层降低了MDFs的火灾增长速度和火灾危险性。这种具有多种功能的涂层为MDFs的保护和功能化开辟了新的途径。
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 PDMS@FDTS-Mg/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.
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