Silicone is a highly active adsorption material, which is an amorphous substance and contains polysiloxane, silicone oil, white carbon black (silica), a binding agent and filler, etc. The main component is silica, and its chemical molecular formula is mSiO2 . nH2O. It is insoluble in water and any solvents, non-toxic, tasteless, chemically stable, does not react with any substances except strong alkalis and hydrofluoric acid. Different types of silica gel form different microporous structures due to different production methods. The chemical composition and physical structure of silica gel determine that it has many characteristics that are difficult to replace with other similar materials: high adsorption characteristics, good thermal stability, stable chemical properties, high mechanical strength, etc. Silicone also has good electrical insulating properties and biocompatibility. Therefore, silicone has been widely used in children's products, kitchen supplies, daily necessities, electronics, electrical, medical, aviation, automobile and other fields.
So silicone itself does not necessarily contain flame retardants. However, in some specific application scenarios, in order to improve the flame retardant properties of silicone, manufacturers add flame retardants to silicone. The type and amount of flame retardant added depends on the specific application and performance requirements of silicone. For example, in wire and cable insulation materials, adding flame retardants can significantly reduce the likelihood of fire in medical products, adding flame retardants can improve the safety and reliability of materials;
So how can we identify silicone materials containing flame retardants?
1. Read the instruction manual or technical specifications to understand the composition and characteristics of the silicone material;
2. Pay attention to the appearance and color of silica gel. As a rule, silica gel containing flame retardants has a more uniform color and does not contain impurities;
3. Check the flame retardant properties of silicone materials by experimental methods such as combustion tests, thermal stability tests, etc.;
4. Understand the authority and reputation of the manufacturer and choose products from well-known brands, which are often more reliable.
