Fire-swellable magnetic adhesive tape and processing method thereof

Abstract

The invention discloses a magnetic adhesive tape capable of expanding when encountering fire, the magnetic adhesive tape comprises the following raw materials in parts by weight: 80-90 parts of magnetic powder, 10-15 parts of chlorinated polyethylene, 2-5 parts of plasticizer, 0.5-3 parts of lubricant, 7-15 parts of expanded graphite and 3-8 parts of calcium powder, and a processing method of the magnetic adhesive tape capable of expanding when encountering fire comprises the following steps: S1, mixing and kneading in an internal mixer; s2, crushing and granulating; s4, extrusion molding; and S4, cooling and shaping. The magnetic adhesive tape capable of expanding when encountering fire disclosed by the invention has double functions of magnetic attraction sealing and expanding when encountering fire. When the system door and window handle lock does not apply force, the door and window can also achieve the sealing and sound insulation effects. In windy weather, the door and window magnetic self-absorption can play a role in wind prevention and sound insulation, and door and window glass is prevented from being damaged. When a fire breaks out, the magnetic rubber strip which expands in case of the fire expands in case of the fire at 230 DEG C, the size is enlarged, the sealing effect of doors and windows is better, air and smoke are effectively isolated, fire spreading is delayed, and rescue and escape time is won. And property loss is reduced.

Description

technical field [0001] The invention relates to the technical field related to rubber strips, in particular to a fire-expandable magnetic rubber strip and a processing method thereof. Background technique [0002] At present, the system windows of residential buildings are mostly sealed with rubber strips, and the pressure of the handle lock is used to seal. If there are fire protection requirements in some areas, an additional layer of fire windows should be installed. The fire windows need to use fireproof expansion sealing strips. The fireproof expansion strips only reach a certain temperature in case of fire, and expand by themselves to seal and isolate the air. Isolate the smoke and delay the spread of the fire. [0003] The system door and window rubber strip can be used for sealing under the action of the handle lock, but if the handle lock is not locked, the system window cannot achieve sound insulation, windproof, and rainproof effects. In the case of a fire when ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem in the prior art that the fire-resistant expansion strip is used in the heat insulation layer of the system window, in case of fire, the sealing effect will be achieved only when the fire-expanding rubber strip is encountered, and there is no sealing effect under normal circumstances, the present invention provides a fire-expanding Magnetic strip