Fireproof glass, whose function in fire prevention is mainly to control the extension of fire or smoke separation, is a method type of fire prevention data. Its fire prevention function is evaluated by fire resistance function

Classification of fireproof glass

Fireproof glass is a kind of special glass that can adhere to its integrity and thermal insulation in regular fire resistance test. It is divided into three categories according to fire resistance function grade:

Class a fireproof glass that meets the requirements of fire integrity, fire resistance and heat insulation. It includes composite fireproof glass and cast-in-place fireproof glass. This kind of glass has the functions of light transmission, fire prevention (smoke, fire and heat radiation), sound insulation and impact resistance. It is suitable for building decoration steel wood fireproof doors, windows, upper lighting, partition walls, daylighting roofs, smoke retaining vertical walls Perspective floor and other building components that need to be both transparent and fireproof

Class B marine fireproof glass, including sidescuttle fireproof glass and rectangular window fireproof glass. The outer glass plate is tempered safety glass. The data types of inner and outer glass plates can be selected arbitrarily

Class C single piece fireproof glass only satisfying the requirements of fire integrity. This kind of glass has the characteristics of light transmission, fire prevention, smoke separation and high strength. It is suitable for fireproof glass partition walls, fireproof windows, outdoor curtain walls, etc. without heat insulation requirements

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

2.1 composite fireproof glass (dry process) is composed of two or more layers of glass original sheet and one or more layers of water-soluble inorganic fireproof glue interlayer

Fire prevention principle: when a fire breaks out, the glass facing the fire will burst quickly after encountering high temperature, and its fire-proof rubber interlayer will foam and swell about ten times one after another to form a hard milky white foam fire-proof rubber plate, which can effectively block the flame and isolate high temperature and harmful gases. The finished products can be grinded, perforated and cut to size. It is suitable for external windows and external curtain walls, The combination of fireproof glass and PVB laminated glass shall be considered in the design scheme

Scope of application: fire doors and windows, fire compartments and fire partitions in important parts of building rooms, corridors and passages

2.2 the poured fire-proof glass consists of two layers of glass original sheets (three layers of glass original sheets can also be used for special needs), which are sealed with special flame-retardant adhesive strips. The fire-proof adhesive liquid poured in the center is in the form of transparent gel after curing and bonded with the glass

Fire protection principle: in case of high temperature, the transparent gel like fire-proof adhesive layer in the center of the glass will harden quickly to form an opaque fire-proof and heat insulation board. It will not only hinder the extension of the flame, but also prevent the high temperature from transmitting to the back fire surface. This kind of fire-proof glass not only has the function of fire protection and heat insulation, but also has the sharp sound insulation effect. It can be processed into an arc. It is suitable for fire-proof doors and windows, building patios, atriums, shared spaces Computer room fire compartment partition

Important note: the black sealing frame is exposed around the glass, which is suitable for the peripheral strip inlay device. When it is used for the external windows with unobstructed positive and West lighting surfaces, consult the manufacturer in advance for reasonable opinions

2.3 monolithic fireproof glass monolithic fireproof glass is a kind of fireproof glass with single-layer glass structure. It adheres to the integrity of fire resistance within a certain period of time, blocks the open fire and toxic and harmful gases on the fire facing surface, but does not have the effect of temperature and heat insulation. It is suitable for external curtain wall, outdoor window, daylighting roof, smoke retaining vertical wall, frameless door of fireproof glass and partition wall without heat insulation requirements

Application of fireproof glass

Since the batch production of monolithic fireproof glass in China, fireproof glass has been more widely used, but there are several points that should be paid attention to:

1. Before selecting fire-proof glass, it is necessary to know the specific fire-fighting requirements of fire-proof components composed of fire-proof glass, whether they are fire-proof, heat insulation or smoke isolation, fire resistance limit requirements, etc

2. Single piece and composite pouring fireproof glass cannot be cut with a glass knife like ordinary flat glass. It is necessary to cut to length, but the composite (dry process) fireproof glass can meet the cutting requirements

3. When selecting fire-proof glass to form fire-proof components, in addition to considering the fire-proof durability function of glass, its supporting structure and various elements must also meet the needs of fire resistance