Introduction to Fire-Resistant Glass Technology

Fire-resistant glass primarily functions to control the spread of flames or block smoke during fire incidents. As a preventive fire-retardant material, its effectiveness is evaluated based on fire resistance performance. This specialized glass undergoes unique processing and treatment to maintain its integrity and thermal insulation properties during specified fire resistance tests. The base glass for fire-resistant glass can be float flat glass or tempered glass. Composite fire-resistant glass may also be manufactured using single-pane fire-resistant glass.
Classified by fire resistance rating: Five grades: 0.5h, 1.00h, 1.50h, 2.00h, 3.00h.
Classified by fire resistance performance: Insulating fire-resistant glass (Class A), non-insulating fire-resistant glass (Class C), and partially insulating fire-resistant glass (Class B).
By structural type: fire-resistant laminated glass, thin-coated fire-resistant glass, single-pane fire-resistant glass, and fire-resistant wired glass. Fire-resistant laminated glass is further subdivided into composite fire-resistant glass and poured fire-resistant glass based on manufacturing processes. 

1) Composite type: formed by bonding two or more glass sheets with one or more layers of water-soluble inorganic fire-resistant adhesive interlayers. Fire Protection Principle: During a fire, the glass on the fire-exposed side rapidly shatters upon encountering high temperatures. The fire-resistant adhesive interlayer subsequently foams and expands approximately tenfold, forming a rigid, milky-white, foam-like fire-resistant adhesive board. This effectively blocks flames, isolates high temperatures, and prevents the passage of harmful gases. The finished product can be edge-ground, drilled, and cut to size. When used for exterior windows or curtain walls, the design should consider combining fire-resistant glass with PVB laminated glass.

2) Single-Pane Type: Single-pane fire-resistant glass is a single-layer glass structure designed to maintain fire integrity for a specified duration, blocking flames and toxic gases on the fire-exposed side. However, it does not provide thermal insulation.
3) Laminated Type: Constructed from two sheets of glass (or three sheets for special requirements), sealed around the edges with specialized fire-retardant adhesive strips. The fire-resistant gel poured between the panes cures into a transparent gelatinous layer that bonds permanently with the glass. Fire-Resistance Principle: Upon exposure to high temperatures, the transparent gelatinous fire-resistant layer between the glass panes rapidly hardens, forming an opaque fire-resistant and heat-insulating barrier. This barrier not only prevents flame spread but also blocks the transmission of high temperatures to the non-fire side. This type of fire-resistant glass offers not only fire and heat insulation but also outstanding sound insulation properties.