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Intumescent Paint as a Passive Protection Method Against Lithium Battery Fires

Learn about the usage of intumescent paint as a passive protection method against lithium battery fires, its effectiveness, applications, and test results. This report discusses how intumescent paint reacts to heat, acts as a thermal barrier, and delays the effects of fire and heat temporarily.

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Intumescent Paint as a Passive Protection Method Against Lithium Battery Fires

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  1. Intumescent Paint as a Passive Protection Method Against Lithium Battery Fires International Aircraft Systems Fire Protection Working Group, Atlantic City, NJ Dhaval Dadia, FAA Technical Center Atlantic City, NJ November 16-17, 2011

  2. Background • A very effective fire retardant • Used widely in the construction industry • It reacts to the heat and acts as a thermal barrier • swells up and reflects the heat away from the underlying substance

  3. Setup Exposed to an open flame Exposed to radiant heat Coated metals and corrugated cardboard with intumescent paint

  4. Results From Open Flame

  5. Results From Radiant Heater

  6. Future Work • Cartridge Heater surrounded by 4 Lithium-ion batteries. • Wired with thermocouples to record the temperature. • Analyzed the propagation of thermal runaway using different materials as separators

  7. Results

  8. Conclusions • Effectively reflects the heat with coated metals. • Delays the effects of fire and heat temporarily with coated cellulose based materials. • The intumescent paint only delayed the batteries from going into thermal runaway, as predicted from the tests with the open flame and radiant heat.

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