## A Novel Flame-Retardant Coating Based on Polyimide-Based Polymer Nanocomposites: Exploring the Intumescent Mechanism

This article explores a novel flame-retardant coating based on polyimide-based polymer nanocomposites, focusing on the intumescent mechanism of the coating. Intumescent materials, when exposed to fire, expand and form a protective layer, effectively hindering the spread of flames. This coating, developed by researchers at the Chinese Academy of Sciences, demonstrates promising potential for fire safety applications. The coating’s key component is a polyimide-based polymer nanocomposite, which consists of a polyimide matrix reinforced with nanoparticles.

This network traps and releases heat, effectively slowing down the spread of flames and preventing ignition. The coating’s effectiveness is further enhanced by its ability to form a protective barrier against moisture and insects. This barrier prevents water damage and insect infestation, which can compromise the structural integrity of wood and lead to costly repairs. Furthermore, the new coating offers a sustainable and environmentally friendly solution. It is made from natural ingredients, such as phytic acid and quaternary ammonium cation, which are readily available and renewable resources. This eco-friendly approach minimizes the environmental impact of wood construction and promotes sustainable practices.

## Fire Resistance Coatings: A Sustainable Solution for Historical Preservation

The escalating concern for fire safety and environmental sustainability has fueled the development of innovative coating solutions for enhancing the fire resistance of wooden materials. Traditional methods, often relying on hazardous and environmentally damaging materials, are being replaced by more sustainable and practical alternatives. Among these novel solutions is a newly developed coating that offers a significant improvement in fire resistance for various wooden materials, particularly valuable furniture and historical buildings.