Novel Ti₃C₂T_x MXene/epoxy intumescent fire‐retardant coatings for ancient wooden architectures

Abstract

Most of the ancient buildings are made of inflammable wooden structures, which have serious potential safety hazards. Applying fire‐retardant coating is one of the simplest and most effective means of fire prevention in ancient wooden buildings. In this work, we have demonstrated that the Ti3C2Tx transition metal carbide/carbonitride (MXene) was applied as the synergetic agent, waterborne epoxy resin as the film‐forming agent, ammonium polyphosphate, dipentaerythritol, and melamine (P‐C‐N system) as the intumescent fire‐retardant system to prepare Ti3C2Tx/epoxy intumescent fire‐retardant coating (TEIFC). The results showed that MXene has significantly improved the fire‐retardant performance of the coating. By incorporating 3 wt% Ti3C2Tx (TEIFC‐3, with 62 wt% P‐C‐N system), the coating displayed UL‐94 V‐0 rating with the limiting oxygen index value of 38%. In addition, the combination of Ti3C2Tx and P‐C‐N system enhanced the Shore hardness of the coating to 95 SHD (TEIFC‐3). Furthermore, TEIFC‐3 presented high thermal stability with the THRI of 177.0°C and Tdmax of 380.5°C. This work provides a novel strategy for the design and preparation of intumescent fire‐retardant coating, which will greatly broaden the industrial applications of MXene‐based polymer composites in the field of fire prevention of ancient buildings.

High-Efficiency Electromagnetic Interference Shielding of rGO@FeNi/Epoxy Composites with Regular Honeycomb Structures

“…Commonly used polymer matrixes include natural rubber (NR), polyethylene (PE), polypropylene (PP), polyurethane (PU), polyvinylidene fluoride (PVDF), polyimide (PI) and epoxy resins, etc . [ 8 – 10 ]. The conductive fillers usually include metals, conductive polymers and carbon materials.…”

Scalable, superelastic, and superhydrophobic MXene/silver nanowire/melamine hybrid sponges for high-performance electromagnetic interference shielding

“…It can be found that the (104) peak at 2 θ = 39.0° disappeared and the (002) diffraction peak shifted from 9.6° for Ti 3 AlC 2 to 7.2° for Ti 3 C 2 T x nanosheets, indicating the removal of the Al layer in Ti 3 AlC 2 and the exfoliation of Ti 3 C 2 T x MXene nanosheets. 39,40 Moreover, the Ti 3 C 2 T x MXene nanosheet dispersion shows the typical Tyndall scattering effect (Fig. S1b, ESI†), suggesting that it has good uniformity and presents colloidal features.…”

Improved Pyrolysis Performance of a Cyclic Phosphate‐Melamine Intumescent Fire‐Retardant Coating System Using Ceria as an Additive

“…This phenomenon allows heat and smoke to be isolated and achieve good heat insulation and smoke suppression effect [21] . Ceria can strengthen the compactness of the formed foam structure, which prevents the release of noncombustible gas, thus promoting the fire‐retardant performance [22] . As shown in Figure 10(e), Ce4 had denser surface and smaller holes than the other coatings, but its carbon skeleton was very small and the expansion degree was very low.…”