Flame retardant silica gel is a kind of silicone material with excellent flame retardant properties, which is widely used in electrical, electronic, automotive and other fields. Its flame retardant principle is mainly through the addition of flame retardants in silicone raw materials, and a series of reactions occur to achieve the flame retardant effect, such as the following reactions:

Endothermic effect: Some flame retardants (such as aluminum hydroxide and magnesium hydroxide) will decompose and absorb a large amount of heat energy when heated, which reduces the temperature of the material and delays the combustion process.

Covering effect: The non-volatile substances produced by the decomposition of the flame retardant will form an insulating layer on the rubber surface, isolating oxygen and heat sources and preventing further combustion.

Inhibiting the chain reaction: Some flame retardants can capture free radicals and interrupt the chain reaction of combustion, so as to achieve the flame retardant effect.

Release non-flammable gases: Some flame retardants release non-flammable gases, such as carbon dioxide and water vapor, when they decompose, which can dilute the concentration of combustible gases and inhibit combustion.

The production process of flame retardant silicone generally includes the following steps:
Ingredients: The silica gel raw materials (such as polydimethylsiloxane, silicate, etc.) and flame retardants (such as chlorine, phosphorus compounds, inorganic flame retardants, etc.) in proportion to mix.
Mixing: Through the high shear force mixer, to ensure that the flame retardant evenly dispersed into the silicone matrix, to ensure the stability of the performance of the material.
Forming: The stirred mixture is passed through the casting process so that it flows evenly and forms the desired thickness and width. The temperature and speed of the casting machine are well controlled, and the mixture is processed into the desired shape by extrusion, injection molding, molding, etc.
Vulcanization: The silicone is vulcanized at high temperatures to cure and form a solid structure with high elasticity and heat resistance.

Flame retardant silica gel is widely used in many industries because of its excellent flame retardant properties, high temperature resistance and electrical insulation.
Electrical and electronic field: flame retardant silicone is widely used in wire and cable insulation, connectors, battery packaging and other parts. It can effectively prevent fire in electrical equipment and protect the safety of personnel and equipment.
Automotive industry: In automotive electrical systems, engine components and body seals, flame retardant silicone can improve the fire resistance of parts and ensure the safety of vehicles in collision or high temperature environments.
Construction industry: As a building material, flame retardant silicone can be used for sealing and fire retardant coating, especially for sealing systems in high temperature environments.
Aerospace field: Due to its excellent high temperature resistance and flame retardant properties, flame retardant silica gel is often used in aerospace sealing, insulation and fire retardant materials.
Home appliances: Some home appliances such as electric heaters, lamps, household appliances internal components are also often used flame retardant silicone to improve safety.
In general, flame retardant silica gel with its unique properties plays a vital role in many industries, especially in fire safety and high temperature environment has a wide range of applications.

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