Fireproof glass Its role in fire prevention is mainly to control the spread of fire or smoke. It is a measure type fireproof material, and its fire prevention effect is evaluated by its fire resistance.
fire prevention Glass Classification of (by fire resistance)
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
A class
Fireproof glass meeting the requirements of fire integrity, fire resistance and heat insulation at the same time. It includes composite fire-proof glass and pouring fire-proof glass. This kind of glass has the properties of light transmission, fire resistance (smoke, fire and heat radiation shielding), sound insulation and impact resistance , Applicable to architectural decoration steel wood fire-proof door 、 window , light up partition wall , daylighting roof, smoke retaining wall, through floor and other building components that need to be both transparent and fireproof.
B class
Marine fire-proof glass includes fire proof glass for porthole and rectangular window. The outer surface glass plate is tempered safety glass, and the inner surface glass plate material type can be selected at will.
C class
Single piece fireproof glass that only meets the requirements of fire resistance integrity. This kind of glass has the characteristics of light transmission, fire prevention, smoke separation and high strength. It is applicable to fireproof glass partition walls, fireproof windows, outdoor curtain walls, etc. without thermal insulation requirements.
Structure division
The fireproof glass is divided into composite fireproof glass (pouring type and composite type) and single piece fireproof glass.
Composite fireproof glass (dry process)
It is composed of two or more layers of glass sheets and one or more layers of water soluble inorganic fireproof adhesive interlayer.
Fire prevention principle. Finished products can be edge grinded, punched, and cut by changing the ruler.
When it is applicable to external windows and curtain walls, the design scheme shall consider the fire resistant glass and PVB Laminated glass is used in combination. Scope of application: fire doors and windows, fire compartments and fire partition walls in important parts of building rooms, corridors and passages.
Poured fireproof glass
It is made of two layers of glass (three layers of glass can also be used for special needs) and sealed with special flame retardant adhesive tape around. The fireproof glue filled in the middle is solidified into transparent jelly and bonded to the glass.
Fire prevention principle: in case of high temperature, the transparent gelatinous fireproof adhesive layer in the middle of the glass will harden rapidly to form an opaque fireproof heat insulation board. While preventing the flame from spreading, it also prevents the high temperature from transmitting to the back fire surface. This kind of fireproof glass not only has fire and heat insulation performance, but also has excellent sound insulation effect. It can be processed into an arc.
It is applicable to fireproof doors and windows, building patio, atrium, shared space, and partition wall of fire compartment in computer room.
Important note: black sealing frame is exposed around the glass, which is suitable for inlaying installation of surrounding layering. Consult the manufacturer in advance for reasonable suggestions when it is used for unshielded front sun and west facing windows.
Single piece fireproof glass
Single piece fireproof glass is a kind of fireproof glass with single layer glass structure. Keep the fire resistance integrity within a certain period of time, block the open fire and toxic and harmful gases on the fire facing surface, but do not have the function of temperature insulation.
It is applicable to external curtain wall, outdoor window, daylighting roof, smoke retaining wall, fireproof glass frameless door, and partition wall without thermal insulation requirements.
Application of fireproof glass
Since the batch production of single piece fire-proof glass in China, fire-proof glass has been more widely used, but there are several points to be noted when using:
one Before selecting fire-proof glass, it is necessary to know the specific requirements for fire protection of the fire-proof components composed of fire-proof glass, such as fire protection, heat insulation or smoke separation, and fire resistance limit requirements.
two Monolithic and composite poured fire-proof glass cannot be cut with a glass knife like ordinary flat glass, and must be processed to a certain length, but composite (dry process) fire-proof glass can meet the cutting requirements.
three When selecting fireproof glass to form fireproof components, in addition to considering the fireproof durability of glass, its supporting structure and elements must also meet the fire resistance requirements.
Monolithic cesium potassium fireproof glass , Ion exchange is carried out for more than 20 hours under high temperature through special chemical treatment , Replace the metal sodium on the glass surface , Forming low expansion silicate glass , The expansion coefficient is 1.8*10-6/0F (3.24*10-6/K), Therefore, it has heat resistance , After physical treatment at the same time , High compressive stress formed on glass surface , Greatly improves impact strength , When the glass is broken, it presents tiny particles , Reduce harm to human body ! The strength of single cesium potassium fire-proof glass is that of ordinary glass 6-12 times , It's tempered glass 1.5-3 times !
Building code requirements in China , All products installed on cut outs with fire protection requirements , It shall be sampled by the provincial fire brigade where the enterprise is located and sent to the national fireproof material testing center of * * * ( Either Sichuan or Tianjin National Fire Building Material Quality Supervision and Inspection Center ) Test , Must meet the specification requirements , And obtain the inspection report issued by these agencies before sales !
The fire resistance test of single cesium potassium fire-proof glass shall be carried out according to the current national standards , Tested to meet the national standards of the People's Republic of China GB15763.1-2001 Safety glass and fireproof glass for building.
The advantage of single cesium potassium fire-proof glass is that it is not so closely related to the temperature at which it can work , But it is able to withstand the impact of heat wave and the rapid change of Endu , This depends on the specific heat capacity of the glass ( It can affect the rate of temperature rise ), Thermal conductivity ( Rate and distribution of heat through glass ) And thermal expansion rate , At the same time, single cesium potassium fireproof glass can withstand three hundred Quenching treatment from ℃ to cold water !
The thermal conductivity of single cesium potassium fire-proof glass is :1.13W/M ℃
The thermal expansion rate of single cesium potassium fireproof glass is :3*10-6/ ℃
Water resistance compliance :ISO719-HGB 、 ISO720-HGA standard
Acid resistance meets :ISO1776 standard
Alkali resistance meets :ISO695-A standard
Comparison of single cesium potassium fire-proof glass with traditional grouting fire-proof glass , In addition to its height and easy installation, it is characterized by high weather resistance! In addition to being easy to produce bubbles during the production process, the chemical grouting fire-proof glass quickly turns milky white under ultraviolet radiation and flame, and loses the basic function of glass permeability, so it is impossible to observe the fire! The single cesium potassium fireproof glass remains transparent under the action of ultraviolet light and flame, without any change!
In addition to the above fireproof performance and height, the single cesium potassium fireproof glass produced by our company can be further processed into laminated safety fireproof glass, hollow fireproof glass, bulletproof fireproof glass, coated fireproof glass and other diversified products!
