Glass wool board is a man-made inorganic material produced by melting natural minerals-such as quartz sand and limestone-together with chemical raw materials like soda ash at high temperatures, and then using centrifugal technology to form a fibrous, flocculent structure. Its porous structure provides excellent thermal insulation (with a thermal conductivity of 0.035–0.042 W/m·K at room temperature) and sound absorption capabilities; it is classified as a Class A fire-resistant material, capable of withstanding temperatures up to 500°C [1] [3]. The product complies with national standards such as "Glass wool and its products for thermal insulation" (GB/T 13350-2017).
The raw materials are heated to temperatures exceeding 1,000°C until fully melted into liquid glass; high-speed centrifugation or air-blowing processes are then used to draw the molten glass into extremely fine glass fibers. Subsequently, small amounts of organic or inorganic binders are added to bond the fibers together during the forming process, ultimately creating a stable, board-like structure.
Overall, the raw material system for glass wool board consists primarily of minerals supplemented by small amounts of functional additives; it is characterized by abundant material sources, controllable costs, and strong potential for environmental sustainability and recyclability.