Maintenance principle and application area of u200bu200bsteel structure

Maintenance principle and application area of u200bu200bsteel structure

The structure is not ordinary bricks and tiles, it has great shortcomings in fire prevention, so how to give steel How about fireproofing the structure? This is where fire retardant coatings are needed.

Principle of fire protection of steel structure:

Choose adiabatic or endothermic materials to prevent the flame from directly burning the steel structure, Reduce the speed of heat transfer to the steel, delay the temperature rise and strength weakening of the steel structure; On the surface, it can form a refractory thermal insulation protective layer to improve the refractory coating of the steel structure.

Now the fire retardant coating for steel structure is mainly composed of matrix resin, catalyst, carbon-forming agent, foaming agent and so on.

Because of the self-severity and poor decoration of thick fire retardant coatings, it can only be used in some outdoor steel structures that do not require high appearance. Widely used are thin and ultra-thin fireproof coatings for steel structures, especially ultra-thin ones. The main raw materials ammonium polyphosphate, melamine and pentaerythritol used in these two types of coatings have poor water resistance, and there are problems such as dissolution, differentiation, degradation and aging with the environment and time. Thus, such coatings must degrade fire performance over time, and a method for assessing the durability of fire retardant coatings has not been developed.

Large-scale steel structure manufacturing device:

The steel structure adopts high-efficiency energy-saving wall, thermal insulation, heat insulation, sound insulation effect Good, can reach 50% energy saving standard;

The roof has a ventilation function, which can make the interior of the house not form a flowing air space, and ensure the ventilation and heat dissipation inside the roof

In order to ensure the thermal insulation effect, the thermal insulation materials used in the exterior walls and roofs of buildings can be used for a long time and can be thermally insulated;

Generally, in addition to filling glass fiber between the wall columns of steel structure residences, a layer of thermal insulation material is attached to the outside of the wall, which effectively blocks the thermal bridge from the wall column to the outer wall panel; The joists between floors are filled with glass fiber to reduce the heat transfer through the floors; all the interior walls are filled with glass fibers between the wall columns to reduce the heat transfer between the walls.