With the increasing spread of electric cars, fire departments, towing services, workshops and parking garage operators are facing new challenges. Especially in the case of lithium-ion battery fires, measures must be quick, effective and safe in order to protect people and the environment. fire blankets are an innovative solution for containing battery fires and minimizing damage. But which materials and properties are crucial? In this article, we take a detailed look at the different types of fire blankets and their advantages and disadvantages.
Table of contents
Functionality of fire blankets
fire blankets are made of fire-resistant materials and are designed in a large format to completely cover a burning vehicle. They prevent the spread of smoke, flames and heat to surrounding objects such as vehicles or the structure of a parking garage. This gives emergency services valuable time to initiate effective firefighting measures.
Important criteria for fire blankets
1. conductivity
The electrical conductivity of a material is a critical factor. Although modern electric cars have automatic cut-off systems that interrupt the power supply in the event of an accident, these systems can fail. Materials that conduct electrical currents can cause personal injury, for example through electric shocks. Manufacturers therefore prefer to use non-conductive materials to ensure the safety of the emergency services.
2. harmlessness to health
Another important criterion is the release of fibers or particles. Some materials can be harmful to health if they are inhaled. Especially with intensive use and high temperatures, it is crucial that the materials do not release any harmful emissions.
3. multiple usability
A high-quality fire blanket should remain flexible and not become brittle even after intensive exposure to heat. This is crucial for cost-effectiveness and practical benefits, as ceilings that can be used several times significantly reduce costs.
4. tear and cut resistance
The load-bearing capacity of the materials is a key feature. Vehicles involved in accidents often have sharp edges that can damage a ceiling. Materials must be tear and cut resistant to withstand even the most demanding applications.
5. temperature resistance
The ability to withstand extreme temperatures is one of the key properties of a fire blanket. Temperature resistance depends heavily on the choice of material and coating. Silicone coatings offer clear advantages here, as they are both heat-resistant and flexible.
6. weather resistance
fire blankets are not only required for fires, but also in various environments. UV light, moisture and large temperature fluctuations must not impair the performance of the ceilings.
Materials for fire blankets
Silica
Silica materials consist almost exclusively of silicon dioxide and offer enormous temperature resistance up to 1,800 °C. They are resistant to chemicals and UV radiation. They are resistant to chemicals and UV radiation. The disadvantage is their limited reusability, as they can be damaged if they come into contact with liquids or chemicals.
E-glass
E-glass is characterized by good electrical insulating properties and a temperature resistance of up to 550 °C. It is suitable for short-term use, but shows weaknesses when exposed to heat for longer periods.
Special glass fiber fabric
This material combines high tear resistance, temperature resistance (up to 1,750 °C) and flexibility. Especially in combination with a silicone coating on both sides, it offers an ideal solution for multiple uses.
Carbon
Carbon scores points for its low weight and high mechanical stability. However, its electrical conductivity and the possible release of fibers that are harmful to health make it a less suitable choice for fire blankets.
Coatings for fire blankets
Vermiculite
This non-combustible material offers temperature resistance up to 1,315 °C. However, it is porous and absorbs liquids, making it heavier and less effective.
Silicone
Silicone is a versatile coating that resists UV light as well as moisture and temperature fluctuations. It protects the base fabric and makes the ceilings flexible, durable and reusable.
Recommendations for different areas of application
- VLITEX SUPERIOR (Silica)
Ideal for applications where silicone must not be used. The blanket impresses with its high temperature resistance, but is only recommended to a limited extent due to its lower mechanical stability and reusability. - VLITEX AUTO STANDARD (E-glass)
Suitable for applications where fires need to be contained quickly. It offers good short-term temperature resistance, but is not intended for multiple use. - VLITEX E-AUTO PREMIUM (special glass fiber)
The most versatile solution: it combines high temperature and tear resistance with flexibility and reusability. This blanket is certified and specially developed for lithium-ion fires.
The right choice of fire blanket
The choice of suitable fire blanket depends on the specific requirements and operating conditions. While silica and E-glass are suitable for special applications, special glass fiber blankets such as VLITEX E-AUTO offer the best all-round properties. Careful consideration of materials and coatings is essential to effectively contain fires and ensure safety.
Find out more about our VLITEX fire blankets and find the right solution for your requirements.
