The function of outdoor fire-proof glass in fire prevention is mainly to control the spread of fire or smoke. It is a measure type of fire-proof material. Its fire-proof function is evaluated by fire resistance.

Classification of fireproof glass

Outdoor fireproof glass is a kind of special glass that can maintain its integrity and thermal insulation in the specified fire resistance test. It is divided into three categories according to the fire resistance rating

Class a fireproof glass meeting the requirements of fire integrity, fire resistance and heat insulation at the same time. It includes composite fire-proof glass and cast-in-place fire-proof glass. This kind of glass has the properties of light transmission, fire prevention (smoke, fire and heat radiation), sound insulation and impact resistance. It is suitable for building decorative steel wood fireproof doors, windows, upper lighting, partition walls, daylighting roofs, smoke retaining vertical walls, perspective floors and other building components that need to be transparent and fireproof.

Class B marine fireproof glass, including porthole fireproof glass and rectangular window fireproof glass. The outer surface glass plate is tempered safety glass, and the material type of inner surface glass plate can be selected arbitrarily.

Class C single piece fireproof glass only satisfying the fire integrity requirements. This kind of glass has the characteristics of light transmission, fire prevention, smoke separation and high strength. It is applicable to fireproof glass partition wall, fireproof window, outdoor curtain wall, etc. without thermal insulation requirements.

Structurally, fireproof glass is divided into composite fireproof glass (pouring type and composite type) and monolithic fireproof glass.

Composite fireproof glass (dry process)

It is composed of two or more layers of glass original sheet and one or more layers of water-soluble inorganic fireproof glue interlayer.

Fire protection principle of outdoor fire-proof glass: when a fire breaks out, the glass facing the fire will burst quickly in case of high temperature, and its fire-proof rubber interlayer will foam and expand about ten times successively to form a hard milky white foam fire-proof rubber plate, which can effectively block the flame and isolate high temperature and harmful gases. Finished products can be grinded, perforated and cut with changed ruler.