Abstract
Polymer materials are ubiquitous in daily life. While polymers are often convenient and helpful, their properties often obscure the fire hazards they may pose. Therefore, it is of great significance in terms of safety to study the flame retardant properties of polymers while still maintaining their optimal performance. Current literature shows that although traditional flame retardants can satisfy the requirements of polymer flame retardancy, due to increases in product requirements in industry, including requirements for durability, mechanical properties, and environmental friendliness, it is imperative to develop a new generation of flame retardants. In recent years, the preparation of modified two-dimensional nanomaterials as flame retardants has attracted wide attention in the field. Due to their unique layered structures, two-dimensional nanomaterials can generally improve the mechanical properties of polymers via uniform dispersion, and they can form effective physical barriers in a matrix to improve the thermal stability of polymers. For polymer applications in specialized fields, different two-dimensional nanomaterials have potential conductivity, high thermal conductivity, catalytic activity, and antiultraviolet abilities, which can meet the flame retardant requirements of polymers and allow their use in specific applications. In this review, the current research status of two-dimensional nanomaterials as flame retardants is discussed, as well as a mechanism of how they can be applied for reducing the flammability of polymers.
Highlights
Polymer materials, due to the continuous development of science and technology, have been widely used in all aspects of humankind’s basic life necessities [1]
We found that a high thermal conductivity (TC) is an important factor for the high flame retardancy
Li et al [216] synthesized a hybrid flame retardant (GO-MD-MP) containing methacryloisobutyl polyhedral oligomeric silsesquioxane (POSSMA), reactive glycidyl methacrylate (GMA), bis-9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide methacrylate and its derivative functionalized graphene oxide (GO) via a onestep gra ing method. eir results showed that the limiting oxygen index (LOI) of epoxy resin (EP) increased to 31.1% a er adding 4 wt% GO-MD-MP, and it reached a UL-94 V-0 rating
Summary
Due to the continuous development of science and technology, have been widely used in all aspects of humankind’s basic life necessities [1]. In addition to graphene, two-dimensional nanomaterials, such as hexagonal boron nitride (h-BN) [11,12,13,14,15,16], molybdenum disul de (MoS2) [17,18,19,20] and black phosphorus [21] (Figure 1), have been developed, which has greatly expanded the properties and applications of two-dimensional materials in this realm. It is believed that the biggest obstacle to the application of two-dimensional nanomaterials as ame retardant additives is the high cost and the low yield of the peeled sheet structures [46]. Is highlighted the e ects of two-dimensional nanomaterials and the unique ame retardant mechanisms of sulfur, phosphorus, nitrogen, silicon, layered double hydroxide, and carbon skeleton Recent progress and future development trends in ame-retardant materials using two-dimensional materials were summarized above. is highlighted the e ects of two-dimensional nanomaterials and the unique ame retardant mechanisms of sulfur, phosphorus, nitrogen, silicon, layered double hydroxide, and carbon skeleton
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