We sincerely invite you to explore the process of producing blowing agent AC/ADC together.
Whether you are professional in the chemical industry or wholesalers who want to purchase chemicals, this is a good opportunity for you to enrich knowledge.
Understanding the steps involved in the production of blowing agents AC/ADC can stimulate our creative minds and expand their applications in different fields.
Raw materials preparation
All blowing agents often do not include a single ingredient. The main raw material for AC/ADC foaming agents is Azodicarbonamide.
Below are the chemicals and additives used in the process:
Azodicarbonamide
the main ingredient
Stabilizers
It is used to prevent the blowing agent from decomposing during production and storage.
Dispersants
This ensures that the blowing agent is evenly dispersed during usage.
Catalysts
It can accelerate the chemical reaction and improve efficiency.
As there are many types of chemicals and additives and each manufacturer applies them differently in actual production, we will not repeat them here.
Mixing
Workers need to mix the prepared raw materials in specific proportions. Usually, the factory will use professional high-speed mixing equipments to ensure the components are evenly distributed. During the process, time and temperature need to be strictly controlled to prevent reactions too fast and the mixing of ingredients uneven.
Specialized equipment
such as a twin-screw mixer
Time and temperature
Usually, mixing is done at room temperature for about 30 minutes to an hour.
Chemical reaction
Workers feed the mixed raw materials into the reactor. The steps include:
Heating
The reactor heats the mixture to 180-200° (the exact temperature depends on the reaction conditions).
Decomposition
The azodicarbonamide decomposes at a high temperature, which can generate N₂, CO, CO₂, and NH₃.
Control
The factory ensures that the decomposition of the material is complete and the gas volume is stabilized by controlling temperature and time.
Drying and pulverization
Once the reaction is finished, the factory dries and pulverizes the resulting material:
Drying
Factory adopts equipment (e.g. spray dryer or fluid bed dryer) to evaporate the water from the product. This requires specific temperature (60-80°) and time (approximately 2-4 hours).
Pulverization
The dried material is fed into a pulverizer to form tiny powders. The particle size of the powder is usually between 5-20 microns to make sure effectiveness and uniformity during usage.
Package
After crushing, blowing agent AC/ADC is then packed:
Material choice
Workers will adopt moisture-proof, pollution-proof plastic bags or aluminum foil bags to package the blowing agents.
Process
Factory will carry them out in a dust-free environment to ensure products' purity and activity. After packing, it will have machines seal the package and label it with the name, batch number, production date, and other informations.
Quality test
Packed blowing agents should go through strict quality tests:
Purity
Using gas chromatography or high-performance liquid chromatography to test the purity.
Gas generation
Determining the gas generation by the thermogravimetric analyzer.
Particle size distribution
This is measured by using a laser particle size meter.
Stability
It is tested under specific temperature and humidity conditions to ensure that blowing agents will not decompose prematurely during storage and usage.
Storage and transportation
Finally, the tested AC/ADC foaming agents will be stored and transported.
Storage
AC/ADC foaming agents will be stored in a cool, dry, and well-ventilated warehouse, avoiding direct sunlight and high-temperature.
Transportation
During transportation, we should pay attention to moisture, fire, and avoid violent vibration. We can use sealed containers or boxes to avoid damaging when transport.
Through the above-detailed steps, qualified blowing agents AC/ADC is made and flow into the big market, penetrating into all corners of our lives.
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