Modifying Epoxy Resins to Resist Both Fire and Water

Abstract

In this work, we converted inherently hydrophilic and flammable epoxy resins to resist both fire and water. This was achieved by integrating surface modified flame-retardant CoFe 2 O 4 nanoparticles into the epoxy resin. The modified CoFe 2 O 4 nanoparticles reduce the peak heat release rate, peak smoke production release and CO production in the CoFe 2 O 4 /epoxy resin nanocomposite by 39.6, 41.6, and 61.3%, respectively. The obtained flame retardant CoFe 2 O 4 /EP items demonstrate excellent durability with constant superhydrophobicity even after high external pressure, knife-scratch, and mechanical abrasion. In addition, the obtained items demonstrate outstanding robust water-repellent properties after facing longterm exposure to extremely corrosive liquids and also show self-cleaning properties in air and under oil.

Structure and Bottom-up Formation Mechanism of Multisheet Silica-Based Nanoparticles Formed in an Epoxy Matrix through an In Situ Process

“…Recently, very great interest has been devoted to the development of organic/inorganic hybrid (HOI) composite materials with the dispersed phases in these materials in sizes down to a few tens of nanometers. − Such materials find widespread applications spanning from the field of protective coatings to electrochemistry, catalysis, biomaterials, energy storage devices, etc. ,,, Many applications take advantage of the “nano” size, i.e., an enhanced catalytic activity as the result of the specific surface increase. Very often, unprecedented materials were produced whose properties are not simply a combination of the two components alone .…”

Solvent-Free One-Pot Synthesis of Epoxy Nanocomposites Containing Mg(OH)2Nanocrystal–Nanoparticle Formation Mechanism

“… 12 , 27 This is an example of the reasons why organic/inorganic hybrid (HOI) and nanostructured composites have received so much attention recently. 28 − 40 Very often, their synthesis gave unprecedented materials whose properties are not simply a combination of the two components alone. 41 …”

Magnetic Field-Induced Orientation of Modified Boron Nitride Nanosheets in Epoxy Resin with Improved Flame and Wear Resistance

“…24 In our previous work, we fabricated a superhydrophobic CoFe 2 O 4 /EP composite and investigated the fire resistance properties. 2 In this study, we employed boron nitride nanosheets (BNNs) decorated with ZnFe 2 O 4 nanosheets (ZnFe 2 O 4 −BNNs) as a filler to fabricate ZnFe 2 O 4 −BNN/EP monoliths. An external magnetic field was introduced to align hydrophobic ZnFe 2 O 4 −BNNs in the EP matrix, which can further endow monoliths with better fire and abrasion resistance.…”

“…As an important engineering material, epoxy resin (EP) is widely used in adhesives, electronic packaging materials, aerospace, building materials, chemical anticorrosion, and other fields. − However, there are two major challenges that hinder the use of EP. One, EP is easy to burn and leads to major fire hazards and has massive cost for fire protection. − Another challenge is that pure EP is brittle with poor friction and wear resistance. − Recently, many studies have demonstrated that the combination of EP and inorganic fillers can improve the wear resistance, for example, nanofillers such as SiO 2 , Al 2 O 3 , graphene, hexagonal boron nitride (h-BN), − and carbon nanotubes , can significantly improve the wear resistance and mechanical strength of EP.…”

“…In our previous work, we fabricated a superhydrophobic CoFe 2 O 4 /EP composite and investigated the fire resistance properties . In this study, we employed boron nitride nanosheets (BNNs) decorated with ZnFe 2 O 4 nanosheets (ZnFe 2 O 4 –BNNs) as a filler to fabricate ZnFe 2 O 4 –BNN/EP monoliths.…”