Self-assembly of hierarchical MXene@SnO2 nanostructure for enhancing the flame retardancy, solar de-icing, and mechanical property of polyurethane resin

Polyurethane Exothermic Polymerization and Phase Change Material Thermal Delay Matching: An Approach to Reducing Fire Risks in Mining Polymer Materials

“…The oxygen index is the lowest oxygen concentration at which the sample naturally goes out of combustion after only 50 mm burning. The oxygen index of the PPU sample was 22, and after being changed by compound salt, the PU slightly dropped by around 0.5 . As the proportion of EP increases, the oxygen index of low exothermic polyurethane remains essentially unchanged.…”

“…The oxygen index of the PPU sample was 22, and after being changed by compound salt, the PU slightly dropped by around 0.5. 35 As the proportion of EP increases, the oxygen index of low exothermic polyurethane remains essentially unchanged. However, the volume of the polyurethane foam increases, resulting in a reduction in the polyurethane content per unit volume, which leads to a slight decrease in the oxygen index of the low exothermic polyurethane.…”

Constructing Fireproof MXene-Based Cotton Fabric/Thermoplastic Polyurethane Hierarchical Composites via Encapsulation Strategy

“…The toxic gas suppressive property of the MXene-based cotton/TPU hierarchical composites earns the superior position among the most excellent works, and the correlated comparison results are drawn in Figure c and Table S5, respectively. For instance, MXene@SnO 2 nanostructure declined the COPR and COTY values of TPU matrix by 20.8% and 8.0%, respectively; the incorporation of MXene-D-H nanohybrid into TPU led to the reductions in the COPR and COTY of 36.7% and 29.7%, respectively; MXene-PPPA nanofiller decreased in the COPR and COTY values of TPU matrix by 21.7% and 36.8%, respectively; through incorporating 2.0 wt % titanium carbide graphene oxide (MXene-rGO) nanofiller, the COPR and COTY values of TPU matrix were reduced by 21.7% and 36.8%, respectively . Moreover, the ionic liquid (IL) was fabricated in the surface of black phosphorus (BP), and the introduction of 2.0 wt % IL-BP decreased the COPR and COTY values of TPU matrix by 26.5% and 27.1%, respectively; a natural antioxidant, tannin (TA) was designed to functionalize BP, and the COPR and COTY values of TPU composites with TA-BP showed the 31.3% and 37.8% reductions, respectively, after addition of 2.0 wt % TA-BP hybrid; 1.0 wt % molybdenum diselenide/carbon nanotubes nanohybrid (HC-Mo) was utilized to reduce the COPR and COTY values of TPU by 37.8% and 13.4%, respectively; 1.0 wt % zeolitic imidazolate frameworks-derived carbon nanotubes/bimetallic oxides (CNTs/BMO) hybrids were designed to decrease the COPR and COTY values of TPU by 34.5% and 41.8%, respectively .…”

“…For example, MXene@SnO 2 nanoflame retardant was prepared to decrease the PHRR and THR values of pure TPU by 50.5% and 9.7%, respectively. 49 And MXene-D-H nanohybrid (the combination of DOPO-HQ and MXene) endowed the TPU body with the reduced PHRR and THR values by 27.3% and 17.3%, respectively, compared with those of pure TPU. 41 The PHRR and THR values of TPU composites were reduced by 24.5% and 32.6%, respectively, compared with those of pure TPU, after the incorporation of a MXene/polyphenyl phosphate ester amide nanohybrid (MXene-PPPA).…”

“…It is noted that some of nanofillers were not enough to effectively decrease the PHRR and THR values of TPU. For example, MXene@SnO 2 nanoflame retardant was prepared to decrease the PHRR and THR values of pure TPU by 50.5% and 9.7%, respectively . And MXene-D-H nanohybrid (the combination of DOPO-HQ and MXene) endowed the TPU body with the reduced PHRR and THR values by 27.3% and 17.3%, respectively, compared with those of pure TPU .…”