In the realm of polymer processing, achieving specific foam characteristics is paramount for product performance and market appeal. Azodicarbonamide (AC), a widely utilized chemical blowing agent, offers manufacturers the flexibility to tailor foam structures through variations in its grades. As a leading manufacturer and supplier in China, we specialize in providing high-quality Azodicarbonamide grades, including AC7000, and we understand the critical role that factors like particle size and decomposition temperature play. This guide aims to help you select the right AC grade for optimal foam properties.

The Impact of Particle Size

The particle size of Azodicarbonamide directly influences its dispersion and reactivity within the polymer matrix. Finer particles generally offer:

  • Superior Dispersion: Smaller particles are more easily and evenly dispersed throughout the polymer melt, leading to a more homogeneous foam structure. This is crucial for applications requiring consistent cell size, such as in EVA shoe soles or PVC artificial leather. Our AC7000 grade, with an average particle size of 3-5 µm, is engineered for excellent dispersity.
  • Faster Decomposition and Gas Release: Finer particles have a larger surface area to volume ratio, which can lead to a more rapid and efficient decomposition and gas release upon heating. This can result in finer cell sizes and improved foaming efficiency.
  • Improved Handling and Reduced Dusting: While ultra-fine powders can sometimes pose handling challenges, controlled fine particle grades are balanced for ease of use and reduced risk of dust inhalation during manufacturing.

The Significance of Decomposition Temperature

The decomposition temperature of Azodicarbonamide dictates the processing window during which foaming occurs. Different grades are designed to decompose within specific temperature ranges:

  • High-Temperature Grades (e.g., AC7000): These grades typically decompose around 197-203°C. They are ideal for polymers that require higher processing temperatures, such as certain types of EVA, PVC, and acrylonitrile butadiene styrene (ABS). Manufacturers of PVC wallpaper and high-density EVA foam often benefit from these grades.
  • Normal/Mid-Temperature Grades: These grades decompose at slightly lower temperatures, suitable for polymers that process at moderate heat.

When you buy Azodicarbonamide, understanding these parameters is key. A mismatch between the blowing agent’s decomposition temperature and the polymer’s processing temperature can lead to insufficient foaming, over-foaming, or uneven cell structures.

Choosing the Right Supplier in China

Selecting a reliable supplier for your Azodicarbonamide needs is critical. As a dedicated manufacturer, we offer different grades with precisely controlled particle sizes and decomposition temperatures. Whether you need AC7000 for its fine particle dispersion or a specific temperature profile for your unique application, we provide detailed technical specifications and competitive prices. Partnering with us ensures you receive consistent quality and expert support to optimize your foaming processes for plastics and rubber.

By carefully considering the particle size and decomposition temperature of Azodicarbonamide grades, manufacturers can effectively control foam density, cell structure, and overall product quality. Contact us today to explore our range of Azodicarbonamide products and find the perfect fit for your manufacturing requirements.