Fire-resistant wraps are typically composed primarily of inorganic materials characterized by high-temperature resistance, low thermal conductivity, and high stability. These materials do not readily combust in high-temperature environments nor do they emit significant amounts of toxic smoke, forming the foundation of their safety performance.
Common core materials include rock wool, mineral wool, ceramic fiber, and aluminum silicate fiber. Rock wool and mineral wool are widely used due to their excellent thermal insulation properties and cost-effectiveness, whereas ceramic and aluminum silicate fibers offer superior temperature resistance, making them suitable for high-temperature industrial equipment or applications with stringent fire safety requirements. These materials are generally supplied in the form of blankets, boards, or rolls, facilitating easy cutting and installation.
Composite structures also incorporate reinforcing and protective materials. For instance, fiberglass cloth enhances overall tensile strength, metal mesh provides structural support, and aluminum foil layers or inorganic coatings offer protection against moisture and corrosion while reflecting thermal radiation. The specific combination of materials directly determines the fire rating and service life of the wrap; consequently, configurations are often customized based on the specific application environment in actual engineering projects.