A kind of expandable flexible fireproof material and its application

Abstract

The invention provides an expansible flexible fireproof material. The material is prepared from a resin composite material containing flexible resin, expansible graphite and additives. The material can be applied to door frames as fireproof sealing strips and can also be applied to lock sets as fireproof gasket sleeves or gasket components of the lock sets. The material is good in flexibility, excellent in expansion performance and good in shape retention after combustion, is free of smoke after combustion and can rapidly expand in case of heating when a fire occurs so as to block up door cracks or lock set gaps.

Description

technical field [0001] The invention relates to the field of fireproof and flame-retardant materials, in particular to an expandable flexible fireproof material and its use as a door frame sealing strip and a lockset fireproof gasket cover. Background technique [0002] With the development of the door and window sealing industry and the continuous improvement of people's awareness of fire safety, people's requirements for the sealing and fire resistance of doors and windows are also increasing. For the fire protection of doors and windows, at present, there are many reports on fireproof sealing strips, but the sealing strips that can not be burned out for a long time after a fire occurs, and can also expand rapidly to isolate smoke penetration have always been the goal of scientific research. However, there are relatively few reports on lock sealing and fire prevention. As the saying goes, the embankment of a thousand miles is destroyed by ant nests. Even if fireproof seal...

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Problems solved by technology

However, the gasket in this document is in the form of a single gasket, and the document does not disclose the composition of the gasket, and does not disclose the flexibility and strength of the gasket before burning, and the shape retention after burning.

[0004] CN106116600A discloses a preparation method of a ceramizable fireproof blocking material. The traditional fireproof blocking material has poor fire resistance and is easy to burn and crack in a fire without effectively preventing the flame and smoke from spreading. Moreover, the blocking material is in use. Due to the aging of the binder and the ambient temperature, it is often solidified. After curing, the volume of the plugging material shrinks and forms gaps, resulting in the problem of imprecise sealing. A method for preparing a ceramizable fireproof plugging material is provided. Expanded graphite is used as a flame retardant, rice husk ash rich in silica and diatomaceous earth are mixed to make a ceramizable paste, supplemented by river sand perlite refractory filler, which is obtained after mixing with silicone resin in a kneader Ceramicable Fireproof Sealing Material

There is also no mention of the degree of expandability, flexibility and shape retention after burning, especially the materials used are mostly inorganic materials, which have poor flexibility and are not conducive to the fit of door panels or locks.

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