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flame protection

ENABLING FLAME RESISTANT SOLUTIONS INDEPENDENTLY OF THE BASE MATERIAL

Flame protection


Due to their high carbon content, plastics are highly combustible. Using flame retardants can significantly lower the risk of fire, but they do also have some disadvantages, as they modify the polymer properties of the material. This can often cause the required mechanical or electrical properties to be rendered ineffective. However to counter act these tendencies innovative additives based on organically modified siloxanes from Evonik are available.


heat conductivity

Flame retardancy is becoming increasingly important,  especially in the transport and construction sectors. The Construction Products Regulation (CPR) specifies new standards for cable applications in construction. The intention is to prevent fire from spreading for example through cable shafts. Our TEGOMER® V-Si 4042 and TEGOMER® FR 100 have enabled the development of  suitable HFFR cable compounds – without adversely  affecting the material properties.

Another example is the EN 45545 standard for transportation applications: For safety reasons, regular  EPDM-based rubber is being increasingly replaced in railway cars by silicone rubber using TEGOSIL® FR 1000.

In e-mobility, in electronics and in electrical systems,  flame protection is critical – for cables, switch cabinets, casting compounds for components, etc. Even just a minimal amount of additive from Evonik can make a key contribution to performing a task better. Here  TEGOMER® H-Si 6441 P has become the product of choice for applications in high-performance plastics such as PA, PBT or TPE.

Using the right additives can not only mitigate the disadvantages  of flame retardants, but can even help to meet further industry and legislative requirements – such as minimal smoke formation and low heat release rates in the event of a fire. Organically modified siloxanes from Evonik can serve as little magical add-ins to open up new possibilities in the development of flame retardant  compounds.

Further information

Cable Compounds - Flame resistance is an issue of high consideration for a variety of new compound developments used in cable jacketing materials for building and transportation as well as for electronics.

High-grade compounds for the cable industry - In the cable industry and especially for communication cable there is a ongoing trend away from PVC and halogenated flame retardants towards cable made of polyolefins. To achieve good flame retardant properties high loadings with inorganic fillers up to 65 % need to be realized.

Contact

Peter Seidensticker

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