Fire Extinguisher Cylinder Inner Thermoplastic Coating

Fire extinguisher cylinders are typically made of metal, such as steel or aluminum, and are designed to contain the extinguishing agent that is used to put out fires. However, some fire extinguisher cylinders may have an inner thermoplastic coating, which is applied to the inside of the cylinder to protect against corrosion and improve the performance of the extinguishing agent.

The thermoplastic coating used in fire extinguisher cylinders is typically a polyethylene polymer or nylon material. These materials are chosen for their durability, resistance to chemicals, and ability to withstand high temperatures. The coating is applied to the inside of the cylinder using a process called rotational molding, where the powder coating is heated and rotated inside the cylinder until it melts and forms a uniform layer.

The use of an inner thermoplastic coating in fire extinguisher cylinders can provide several benefits. Firstly, it helps to protect the cylinder from corrosion, which can be caused by the extinguishing agent or exposure to moisture. Corrosion can weaken the cylinder and reduce its ability to contain the extinguishing agent effectively, which can compromise its effectiveness in an emergency situation.

Secondly, the thermoplastic coating can improve the performance of the extinguishing agent. For example, in carbon dioxide (CO2) fire extinguishers, the coating can prevent the CO2 from reacting with the metal of the cylinder, which can cause the cylinder to weaken or rupture. Additionally, the coating can help to reduce the amount of CO2 that escapes from the cylinder during use, which can improve the efficiency of the extinguisher.

However, there are some concerns about the safety of thermoplastic coatings in fire extinguisher cylinders. If the coating is not applied correctly or is damaged, it can peel or flake off, which can contaminate the extinguishing agent and cause it to malfunction. Additionally, if the coating is exposed to high temperatures or flames, it can release toxic fumes, which can be harmful to humans and the environment.

To ensure the safety and effectiveness of fire extinguisher cylinders with inner thermoplastic coatings, it is important to follow proper maintenance and inspection procedures. Cylinders should be inspected regularly for signs of damage or corrosion, and any defects should be addressed immediately. Additionally, extinguishers should only be used in accordance with the manufacturer’s instructions and should be stored and transported safely to prevent damage to the coating.

In conclusion, the use of an inner thermoplastic coating in fire extinguisher cylinders can provide several benefits, such as protecting against corrosion and improving the performance of the extinguishing agent. However, there are concerns about the safety of these coatings, particularly if they are damaged or exposed to high temperatures. It is important to follow proper maintenance and inspection procedures to ensure the safety and effectiveness of fire extinguisher cylinders with inner thermoplastic coatings.

PECOAT® Fire Extinguisher Cylinder Inner Thermoplastic Coating is a polyolefin based polymer , developed for application by rotational lining to metal cylinders to give a protective coating with excellent resistance to aqueous environments, including the foaming agent A.F.F.F. and is also resistant to up to 30% Antifreeze (ethylene glycol). When correctly applied, the coating gives excellent adhesion without the need for a separate adhesive priming coat and can withstand steady or cycling temperatures between -40°C and +65°C