Flame retardant seals can also be called fire-resistant seals, fire-resistant intumescent seals, smoke-resistant flame-retardant seals or high-temperature resistant rubber strips. The following will introduce the main features and material classification of flame retardant sealing strips; The materials of flame retardant sealing strips can be classified, which can be divided into natural rubber flame retardant sealing strips, EPDM flame retardant sealing strips, PVC (plastic) flame retardant sealing strips and silicone flame retardant sealing strips.
Fireproof flame retardant sealing strips are mainly used for fireproof door products between doors and between doors. When a room is on fire and the temperature reaches a certain value, it isolates the air circulation between the two rooms and prevents the flame from spreading. The application of this product replaces the domestic asbestos rope previously used for the gap of the fire door, and has passed the test of the national fixed fire extinguishing system and the quality supervision and inspection center of refractory components, and all indicators are qualified.
In addition to good fire resistance and expansion properties, flame retardant sealing strip products also have good flexibility, making them have excellent sealing and shockproof properties. At the same time, due to the extrusion process, flexible fire-resistant intumescent sealing strips of various shapes and lengths can be made according to user requirements, which provides convenience for users.
Flame retardant sealing strip products are ideal fire sealing materials for building fire protection components. It is mainly used for fire sealing of various steel fire doors, such as side seam and middle seam sealing of double doors. At the same time, it can be widely used in the fields of waterproof, fireproof, sealing, fireproof glass lines and safes of elevator mezzanine doors.
Product characteristics of flame retardant sealing strips: expansion temperature: initial expansion temperature 199 °C, main body expansion temperature 347 °C;
Linear expansion multiple: greater than or equal to 3 times of the original expansion body thickness;
High temperature combustion resistance: the temperature rises to 980 °C and is kept for 30min, no combustion, no ashing;
Smoke resistance: The fire resistance test is carried out for 72 minutes, the door is installed with sealing strips, there is no obvious smoke leakage in the left and right clearances, and the smoke resistance is greater than 72min;
Environmental resistance: at room temperature, under the condition of 90 humidity, the expansion rate remains unchanged for 120 days;
6 regular sizes: 2mm× 20mm× 1050mm, 2mm× 15mm× 1050mm, 2mm× 10mm×1050 (can be customized according to customer requirements). Flame retardant seals can quickly widen and close the gap between doors and windows when heated to prevent smoke and heat from entering and ensure personal safety.