What are the requirements of new energy storage industry for the flame retardant performance of high temperature adhesive tape?

Basic flame retardant requirements

In the new energy storage industry, due to the risk of thermal runaway of energy storage equipment such as batteries, high-temperature adhesive tapes need to have good flame retardancy. Generally, high-temperature adhesive tapes are required to meet UL94-V0 flame retardant standards. This means that when the adhesive tape is exposed to the flame, it can extinguish itself quickly and will not produce burning droplets, thus avoiding the spread of the fire.

For example, in the battery module, if a battery unit is out of control and produces flame, the high-temperature adhesive tape used around it should effectively prevent the flame from spreading to other battery units along the adhesive tape, thus reducing the severity of fire accidents.

Low smoke and non-toxic performance

In addition to flame retardant, the amount of smoke and toxic gas produced by high temperature tape combustion is also strictly limited. Because in the closed energy storage system environment, a large number of toxic fumes will cause secondary damage to equipment and endanger the life safety of field personnel.

It is required that the high-temperature adhesive tape releases as little smoke as possible when burning, and does not produce toxic gases such as carbon monoxide and hydrogen cyanide. Some high-temperature adhesive tapes made of environment-friendly flame-retardant materials, the smoke and harmful gases produced in the combustion process meet the relevant environmental protection and safety standards, and are more suitable for application in new energy storage industry.

Heat release rate limitation

The heat release rate of high temperature adhesive tape during combustion is also an important index. Lower heat release rate can delay the development of fire and buy time for fire fighting or other safety measures.

The high-temperature adhesive tape in the energy storage system should be able to control the heat release rate so that the heat released within a specified time is lower than a certain standard. In this way, in case of fire, it can reduce the influence of heat on surrounding batteries and other key equipment, prevent chain reaction, and further expand the fire range.

Synergistic flame retardancy with other materials

In the new energy storage system, high-temperature adhesive tape is usually used together with other materials (such as battery shell materials, insulation materials, etc.). Therefore, it needs to have good synergistic flame retardant effect with these materials.

For example, when the adhesive tape is closely attached to the battery case, they should be able to interact with each other under the action of flame to form a flame-retardant whole. The flame retardant property of adhesive tape should not be reduced by contact with other materials, but should be enhanced by mutual cooperation.