What are the specific ingredients in the fire extinguishing agent formula of a portable dry powder fire extinguisher?

Scientifically proportioned fire extinguishing agent ingredients
The fire extinguishing agent formula of portable dry powder fire extinguishers is the core of fire extinguishing efficiency. This formula is carefully designed and scientifically proportioned to meet different types of fire challenges. Its main ingredients include ammonium phosphate, sodium carbonate, aluminum silicate, magnesium silicate and ammonium chloride, which are mixed in a certain proportion and together constitute the "secret weapon" for efficient fire extinguishing.

As one of the main ingredients of fire extinguishing agents, ammonium phosphate plays a vital role. When dry powder is sprayed onto the fire source, ammonium phosphate will automatically decompose and release a large amount of ammonia. This chemical reaction can not only effectively isolate the contact between oxygen and fuel, but also quickly reduce the flame temperature and interrupt the combustion chain through the dual effects of physics and chemistry, thereby achieving rapid fire extinguishing. In addition, ammonium phosphate also has good anti-reignition performance, which can ensure that the fire source will not reignite after being extinguished.

Sodium carbonate plays the role of neutralizing acidic gases in fire extinguishing agents. At the scene of a fire, a large amount of harmful gases are often produced, including acidic gases. The addition of sodium carbonate can quickly react with these acidic gases to generate harmless substances, thereby reducing the pollution of the fire to the environment and the harm to the human body. At the same time, sodium carbonate can also react chemically with substances such as metal halides to release a large amount of gas, forming a suffocating effect on the fire source, further accelerating the fire extinguishing process.

Aluminum silicate and magnesium silicate are "heat absorbers" in fire extinguishing agents. These two ingredients have excellent heat absorption properties and can quickly absorb heat from the flame at high temperatures and convert it into harmless substances. Through this process, aluminum silicate and magnesium silicate can not only effectively reduce the flame temperature, but also slow down the spread of the fire, buying precious time for fire extinguishing.

The addition of ammonium chloride further enhances the moisture resistance of the fire extinguishing agent. In a humid environment, many fire extinguishing agents may fail due to moisture absorption. The presence of ammonium chloride can effectively prevent the dry powder fire extinguishing agent from agglomerating or failing due to moisture absorption, ensuring that it can maintain stable fire extinguishing performance in various environments.

Analysis of efficient fire extinguishing mechanism
The fire extinguishing mechanism of portable dry powder fire extinguisher is based on the synergistic effect of the above ingredients. When the fire extinguisher is activated, the dry powder is quickly ejected under the impetus of high-pressure gas, forming a dense powder mist. After these dry powder particles come into contact with the flame, a series of complex chemical reactions and physical changes will quickly occur. On the one hand, fire extinguishing ingredients such as ammonium phosphate will decompose to produce a large amount of gas and heat absorbing substances, reduce the flame temperature and isolate the oxygen supply; on the other hand, neutralizing ingredients such as sodium carbonate will quickly react with acidic gases to reduce the pollution of the fire to the environment; at the same time, aluminum silicate and magnesium silicate are responsible for absorbing heat and moisture in the flame, further suppressing the fire.

Dry powder fire extinguishing agent also has good covering ability. When the dry powder is sprayed to the fire source, a dense covering layer will be formed to isolate the flame from the air. This covering layer can not only prevent oxygen from entering the fire source area, but also quickly extinguish the flame through physical asphyxiation. At the same time, the chemical components in the dry powder can also react with free radicals in the flame, interrupt the transmission of the combustion chain, and fundamentally eliminate the fire source.