Thermal Stability Test of Fireworks and Firecrackers

Thermal stability of fireworks refers to their ability to maintain their physical and chemical properties unchanged during long-term storage. Thermal stability is the property of explosives decomposing due to temperature rise, leading to combustion and explosion. Thermal stability tests include 75℃ or 100℃, 48h weight loss percentage test, more accurate differential thermal analysis test and long-term storage weight loss test, etc.
The thermal stability test of fireworks and firecrackers can determine the thermal stability of products at 75°C. Zhongke Testing and Reliability Experiment Center has the capabilities of environmental testing and reliability performance testing of various fireworks and firecrackers, and provides professional thermal stability testing services for fireworks and firecrackers.

Fireworks and firecracker products such as firecrackers, spray flowers, rotating types, lift-off types, spitting beads, toys, fireworks, stand fireworks, combination fireworks, etc.

1. The sample is a transport package, that is, a box of fully packaged products. Some products may be too long, such as rocket products. You can cut off a section of the wooden pole and put it into a similar smaller package before testing.
2. When dealing with products with unknown properties, a small amount of pyrotechnic agent should be extracted from the product and subjected to a 75°C thermal stability test to determine its performance. If no explosive reaction occurs when testing with a small amount of the substance, perform the test again. If an explosion or fire occurs, the thermal stability does not meet the transportation requirements.
3. Place the thermocouple on the surface of a product near the center of the package, and connect the thermocouple to a temperature recorder. Then put the entire package (together with the thermocouple) into the constant temperature oven placed in the anti-explosion chamber, adjust the temperature to 75°C, turn on the power of the constant temperature oven, close the door of the anti-explosion chamber, then turn on the main power supply from outside the anti-explosion chamber, heat the constant temperature oven to 75°C, and leave the sample in the constant temperature oven at this temperature for 48 hours or until there is fire, explosion, smoke, decomposition or some sign of self-heating.
During the test, if explosion, fire, smoke, decomposition, temperature rise exceeds 3°C, and the product shell is damaged, the result will be "+". If no change is observed, the result is "-".

SN/T 1730.2-2006 Safety performance inspection method for exported fireworks and firecrackers Part 2: 75℃ thermal stability test
SN/T 1730.3-2006 Safety performance inspection method for exported fireworks and firecrackers Part 3: Low temperature stability test
SN/T 1730.4-2006 Safety performance inspection method for exported fireworks and firecrackers Part 4: Vibration resistance test
SN/T 1730.5-2006 Safety performance inspection method for exported fireworks and firecrackers Part 5: Drop test
SN/T 2498.1-2010 Basic Environmental Test Specifications for Imported and Exported Fireworks and Firecracker Products Test Db: Alternating Humidity and Heat Test Method
SN/T 2498.2-2010 Basic Environmental Test Specifications for Imported and Exported Fireworks and Firecracker Products Test Ed: Free Drop
SN/T 2498.3-2011 Basic environmental testing specifications for imported and exported fireworks and firecracker products Test Z/AD: Temperature and humidity combined cycle test method
SN/T 2498.4-2012 Basic Environmental Test Specifications for Imported and Exported Fireworks and Firecracker Products Constant Humidity and Heat Test Method