(1) Class A Non-Combustible: How is the Core Performance of Fireproof Black Wool Board Ensured?
Fireproof black wool board is manufactured using natural minerals like basalt, which are melted at extreme temperatures exceeding 1450°C. The molten material is fiberized via a centrifugal spinning process, and these fibers are then bonded with thermosetting resin to form the boards. Its fundamental Class A non-combustible property stems from the inorganic nature of the raw materials-possessing a melting point over 1000°C. During a fire, it does not melt-drip or release toxic gases, and its low thermal conductivity (as low as 0.034 W/(m·K)) effectively blocks heat transfer. For instance, in standard fire tests, the Rockwool CL-H128 Universal Fireproof Black Wool Board demonstrated a 40% lower temperature increase on its unexposed side at 1000°C compared to standard rock wool, providing reliable passive fire protection for buildings.
(2) Fire Resistance Limit: How Does Fireproof Black Wool Board Achieve Prolonged Fire Retardation?
The fire resistance performance of the board depends on fiber length and structural density. Long fibers (≥50mm) interlock to form a three-dimensional network structure. Combined with a low-porosity design, this structure enables the board to withstand sustained high temperatures of 1000°C for 2 to 4 hours without collapsing. Test data shows that a 50mm thick board under flame impact at 1000°C exhibits thermal shrinkage of less than 2%, and the temperature rise on its unexposed side is controlled within 180°C. This performance significantly surpasses the fire resistance requirements for firewalls specified in China's "Code for Fire Protection Design of Buildings." Products like the 2-hour fire-resistant black wool board from Langfang Shujun have been certified by the National Center for Quality Supervision and Test of Fire Building Materials and are widely used in firestop applications for curtain walls in high-rise buildings.
(3) Multi-Scenario Application: How Does Fireproof Black Wool Board Adapt to Different Needs?
In the construction sector, it serves as external wall insulation, fire door core material, and pipe wrapping. For example, Huaneng Zhongtian's high-density black wool boards are used in boiler insulation for chemical industry projects, withstanding temperatures up to 650°C. In industrial settings, its resistance to acids, alkalis, and corrosion makes it suitable for equipment insulation in power and metallurgy industries. Furthermore, its non-toxic and low-smoke characteristics align with green building standards. It requires no secondary treatment after installation, reducing overall costs by more than 20% compared to traditional fireproof materials. With increasing fire safety demands in high-rise buildings, market demand for this material is growing at an average annual rate of 15%, and technological development is focusing on enhancing fiber toughness and reducing water absorption rates.
