Fire-resistant glass systems technology - fire-resistant glass frame systems

Fire-resistant glass frame system consists of fire-resistant glass, fire-resistant and fire sealing frame material, within a certain time to meet the fire integrity of the insulation system or non-load bearing requirements, including fire-resistant glass curtain walls, doors and fire glass, fire-resistant glass non-load-bearing walls , fire-resistant glass block wall of smoke and the like. Different systems have different frameworks on fire resistance of fire-resistant glass. Low strength aluminum material, unable to bear the load. After the addition of aluminum in an amount of Mg, Mn, Si and other elements can be made of high strength aluminum alloy.

Aluminum frame structure is a non-burning body under fire load, as the temperature increases its strength decreased when the temperature exceeds 250 ℃, its strength sharply to one-half of the original, about 370 ℃ tensile strength almost total loss, and the low melting point of aluminum (600 ℃ -700 ℃), under fire load in the role of the framework will soon melt, collapse, leading to the spread of fire. Therefore can not be used Fire Resistance aluminum structure, suitable only for fire cut off the following 30 min fire rating requirements, doors and windows, 30min or more fire rating is usually used with a high temperature oxidation resistance of the heat-resistant steel profiles, steel sections as a " lightweight, high strength "construction materials is ideal for fire-resistant construction. Fire glass steel frame non-load-bearing structure, with the main load-bearing steel structures are very different, it proved at the surface without Fire Protection case is still under 180min fire-resistant and high temperature 1200 ℃ slightly deformed but intact. As a load-bearing steel structures in case of fire, due to the high temperature, strength loss quickly, we need to add concrete or surface coatings, such as fire protection.

Ideal framework design is the key to fire protection systems fire resistance glass, and in the design of rational selection of fireproof material is sealed to ensure fire protection systems. According to statistics, in the fire due to smoke poisoning, suffocation and death of a high proportion, so the fire protection systems, the seal is a very important part. When you install fire-resistant glass, in addition to steel frame structure, but also fire-resistant pads, fireproof expansion seal, fire sealant, window and door seals and other auxiliary materials, such materials should be non-combustible or flame retardant materials, combustion performance should be consistent 2001 a current national standard GB50222 "interior decoration of buildings for fire protection design", GBJ16 a 87 "building design for fire protection" and GB50045 - 2005 "Code for fire protection design of tall buildings" requirement. Fire-resistant pads can be calcium silicate-based group or non-combustible material, installed in the bottom steel frame fire-resistant glass, separated by glass and steel components play a supporting role in the glass and steel components prevent fast heat conduction, the glass edge local overheating and burst situation. Fire expansion seal mechanism is typically expanded expandable graphite based, when a fire about 200 ℃ quickly expanded three-dimensional form stable insulating fire resistant layer, played the role of fire and smoke; fire sealant is generally a single group sub neutral silicone rubber, mainly used for sealing joints, and beautify the appearance.

In the standard fire test, if the unexposed surface fire plastic fire, it will directly cause the test to fail. Installation, fire-resistant glass can not be in direct contact with the frame, surrounded by the bottom of the glass and the frame groove should maintain a certain gap, the lower part of each piece of glass should be placed at least two resilient positioning refractory pad, the pad should be able to withstand the weight of the sub-panes loading.