Fire-proof door frame filling method

Abstract

The invention discloses a fire-proof door frame filling method. A fire-proof bag is fixed into a door frame body, in order to achieve a better thermal insulating effect, the fire-proof bag is fixed tothe inner wall of a fired surface of the door frame body or the inner side of an installing port of the door frame body, and filler of the fire-proof bag is a thermal insulating material and an expansion material. When a fire disaster occurs, heat can be transmitted to the fire-proof bag through the fired surface of the door frame body, after the fire-proof bag is heated to a certain temperature,the fire-proof bag is expanded and carbonized promptly to form a fire retarding barrier with a certain thickness and strength, the fire-proof bag absorbs the heat in the expansion and carbonization process, and the purposes of fire retarding and thermal insulation are achieved. According to the fire-proof door frame filling method, a traditional cement-mortar-filled fire-proof door frame is replaced with the convenient-use, low-cost and environment-friendly fire-proof bag, the fire resisting and thermal insulating properties under high temperatures are realized, and the effect which equals toor even beyond a thermal insulating effect of a fire-proof door frame pouring material is achieved.

Description

technical field [0001] The invention relates to the technical field of fire door frame filling, in particular to a fire door frame filling method. Background technique [0002] The heat insulation of the heat-insulated fire door to the door frame requires that the maximum temperature rise on the door frame within the specified fire-resistant time is ≤360°C. The heat conduction of the door frame is divided into three transfer modes according to the heat transfer: heat conduction, heat convection and heat radiation. The cavity of the traditional fireproof door frame is filled to block the heat convection and heat radiation. However, the traditional filling method is to pour cement mortar into the cavity of the fireproof door frame at the construction site or in the factory. The on-site cast-in-place method on the construction site first needs to prepare the cement slurry on site, and then pour it into the door frame. At this time, it is very easy to cause the cement to leak o...

AI Technical Summary

Problems solved by technology

However, the traditional filling method is to pour cement mortar into the cavity of the fire door frame at the construction site or in the factory.

The on-site cast-in-place method on the construction site first needs to prepare the cement slurry on site, and then pour it into the door frame. At this time, it is very easy to cause the cement to leak out, and the surface of the door frame will affect the appearance. Finally, a separate cleaning process is required, so the labor efficiency is low; the work site Scattered, cement mortar needs to be maintained, resulting in long construction period and serious pollution to the site

In the factory, the cavity of the fireproof door frame is filled with cement mortar for construction. Although the problem of scattered work site is solved, the transportation cost is increased during transportation, and the labor burden is increased when it is in place.

At the same time, the pouring and drying time of cement mortar is long, and the undried cement mortar will cause corrosion to the fire door frame, fixed hardware and lining iron, reduce the service life of the fire door and increase the project cost

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