Fire-resistant laminate is a fireproof building material used for surface decoration. It is manufactured by impregnating base papers (such as titanium paper or kraft paper) with melamine and phenolic resins, followed by processing under conditions of high temperature and high pressure.
Fire-resistant laminates come in a wide variety of types and can be classified according to various dimensions, such as their base materials/formulations, thickness, or application fields.
Based on their primary base materials and formulations, common types of fire-resistant boards include:
1.Mineral Wool Boards and Glass Wool Boards: These primarily utilize mineral wool or glass wool as thermal insulation materials. They are inherently non-combustible, possess excellent high-temperature resistance, and are lightweight. However, they have several drawbacks: ① The short fibers can pose a hazard to the human respiratory system; ② The boards exhibit poor structural strength; ③ They offer poor resistance to the spread of smoke during a fire; ④ They have limited aesthetic appeal; and ⑤ Their installation and construction require significant labor. Consequently, most boards of this type have now evolved into composite materials that use inorganic binders as the base matrix, with mineral wool or glass wool serving as reinforcing agents.
2. Cement Boards: Cement-based boards are characterized by high structural strength and are derived from widely available sources. In the past, they were frequently used for fire-resistant suspended ceilings and partition walls; however, their fire resistance is relatively poor-they are prone to cracking and spalling (fragmenting) when exposed to fire, thereby losing their protective function-which has placed certain limitations on their application. Cement concrete components, in general, possess excellent thermal and acoustic insulation properties and can be utilized for partition walls and roof slabs. The building materials market has subsequently seen the introduction of improved varieties, such as fiber-reinforced cement boards, which offer the advantages of high strength and superior fire resistance; however, they still tend to exhibit relatively poor toughness, high alkalinity, and limited decorative appeal.
3. Perlite Boards, Cenosphere Boards, and Vermiculite Boards:These are lightweight, hollow-core boards manufactured using low-alkalinity cement as the base matrix, with perlite, glass microspheres (cenospheres), or vermiculite serving as aerating filler materials, supplemented by various additives. They feature characteristics such as light weight, high strength, good toughness, excellent fire resistance and thermal insulation, and ease of construction. Consequently, they are widely utilized in high-rise framed structures for non-load-bearing applications, such as partitions between rooms or residential units, bathrooms, kitchens, and utility shafts.
4. Fire-Resistant Gypsum Boards: Since the fire-resistant properties of gypsum gained widespread acceptance, the development of fire-resistant boards based on gypsum has progressed rapidly. The primary components of this board material are non-combustible and contain crystalline water, endowing it with superior fire-resistance properties; it is suitable for use as partition walls, suspended ceilings, and roof panels. The raw materials for this board are abundant, facilitating standardized factory-based production. In application, its light weight reduces structural load-bearing requirements; furthermore, it is easy to process-capable of being sawn or planed-offers convenient installation, and possesses excellent decorative qualities, though its flexural strength is relatively poor. Numerous factors influence the fire-resistance performance of gypsum board, including its chemical composition, board type, type of framing (studs/joists), board thickness, the presence or absence of fillers within the air gap, and the assembly method used. Newer varieties have also emerged, such as calcium silicate gypsum fiberboard and double-sided paper-faced fire-resistant gypsum board.
5. Calcium Silicate Fiberboard: A building board primarily composed of lime, silicates, and inorganic fiber reinforcement materials. It is characterized by its light weight, high strength, excellent thermal insulation and durability, as well as superior processing and installation properties. It is primarily used for constructing ceilings and partition walls, and serves as a fire-protection material for steel columns and beams. However, the board's overall strength and flexural performance still require further improvement.
6. Magnesium Oxychloride Fire-Resistant Board: Classified as a magnesium oxychloride cement product, this composite board is formulated with magnesium-based cementing materials as the matrix, glass fiber cloth as the reinforcement, and lightweight thermal insulation materials as fillers. It meets non-combustibility requirements and represents a novel, eco-friendly type of building board.
7. Magnesia Board (MgO Board): Composed primarily of magnesium oxide and magnesium chloride, with glass fibers and similar materials serving as reinforcement, this board is characterized by its excellent fire resistance and high structural strength.
8. Phenolic Resin Board: Utilizing phenolic resin as the primary binder and glass fibers (among other materials) as reinforcement, this board exhibits excellent fire-resistance and mechanical properties.
9. Ceramic Fiberboard: Composed primarily of ceramic fibers, this board possesses exceptional fire-resistance and thermal insulation properties.
According to the national standard *High-Pressure Decorative Laminates (HPL) with Thermosetting Resin Impregnated Paper* (GB/T 7911), these boards can be categorized-based on their thickness and intended application-into types such as thin-profile flooring laminates, thick-profile outdoor laminates, decorative surfacing laminates, and laminates with optional core layers.