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AC foaming agent VS SCF physical foaming

Compare SCF physical foaming and AC blowing agent (azodicarbonamide) technology. Learn differences in cost, equipment, and applications for EVA, rubber and PVC foam products.
Feb 12th,2026 128 Views
 AC Foaming Agent vs. SCF physical Foaming: Which Foaming Technology Is Better for EVA and Rubber Applications?

In the modern polymer and rubber industry, foaming technology plays a key role in lightweight design, thermal insulation, flexibility, and cost reduction. Two major technologies dominate the market: SCF (Supercritical Fluid) physical foaming and AC blowing agent (Azodicarbonamide) chemical foaming.

As a professional AC blowing agent manufacturer in China, Jiangxi Yubo frequently receives inquiries from customers comparing these two solutions. This article explains the differences to help manufacturers choose the most suitable foaming method.

1. Foaming Principle: Physical vs. Chemical Blowing Agent

SCF Physical Foaming

SCF foaming uses supercritical CO₂ or N₂ injected into molten polymers under high pressure. When pressure drops, the dissolved gas expands and forms a microcellular structure.

  • No chemical decomposition
  • Requires high-pressure control
  • Suitable for precision engineering plastics

AC Chemical Blowing Agent (Azodicarbonamide)

AC blowing agent (Azodicarbonamide) is a thermally decomposable chemical blowing agent. When heated to its decomposition temperature (typically 170–210°C depending on grade), it releases gases such as nitrogen (N₂), CO, and CO₂, creating a uniform foam structure.

As a widely used chemical blowing agent for EVA, rubber, PE, PVC, and TPR, AC foaming agent offers stable gas yield and excellent processing adaptability.

2. Equipment Investment & Production Cost

SCF System

  • High-pressure injection equipment required
  • Advanced gas control systems
  • High capital investment
  • Complex maintenance

AC Blowing Agent Solution

  • Can be used in standard extrusion, injection, and compression equipment
  • No high-pressure gas system needed
  • Easy formulation adjustment
  • Lower overall production cost

For most EVA foam sheet manufacturers, shoe sole factories, and rubber product producers, using an AC chemical blowing agent is more economical and production-friendly.

3. Application Comparison

SCF Physical Foaming Applications

SCF Physical Foaming Applications

  • Automotive lightweight components
  • Microcellular engineering plastics
  • High-end technical molding
  

AC Blowing Agent Applications

AC Blowing Agent Applications

  • EVA foam sheets
  • Shoe soles and midsoles
  • Rubber foam products
  • PVC foam boards
  • PE insulation materials
  • Sports flooring and mats
 

Due to its versatility and cost-efficiency, AC blowing agent remains the mainstream choice in the footwear and rubber foam industry.

4. Performance Comparison Table

Item SCF Physical Foaming AC Chemical Blowing Agent
Foaming Type Physical gas expansion Thermal decomposition
Equipment Cost Very High Low
Processing Flexibility Limited Very Flexible
Production Efficiency Moderate High
Suitable for EVA/Rubber Limited Excellent
Cost Performance Medium High

Why AC Blowing Agent Is Still the Mainstream Choice

Although SCF technology offers microcellular precision, most manufacturers prioritize:

  • Stable decomposition temperature
  • High gas yield
  • Uniform cell structure
  • Easy processing
  • Competitive azodicarbonamide price
  • Scalable mass production

As a professional azodicarbonamide supplier and chemical blowing agent factory, Jiangxi Yubo provides customized AC blowing agent grades for EVA, rubber, and PVC applications, ensuring consistent quality and reliable supply.

About Jiangxi Yubo – Professional AC Blowing Agent Manufacturer in China

Founded in 2006, Jiangxi Yubo is a leading AC blowing agent manufacturer with an annual production capacity of 30,000 tons. With nearly 20 years of experience in chemical blowing agents, we supply customers worldwide in the footwear, rubber, and plastic industries.

Our advantages:

  • Stable azodicarbonamide quality
  • Customized particle size distribution
  • Controlled decomposition temperature
  • Technical support for EVA and rubber foaming
  • Competitive factory price

If you are looking for a reliable azodicarbonamide supplier or want to get the latest AC blowing agent price, feel free to contact us for technical consultation and quotation.

Ready to Optimize Your Foaming Process?

Choosing the right foaming technology can significantly impact your product quality, production efficiency, and bottom line. With AC blowing agent's proven track record in EVA and rubber applications, you can achieve consistent, high-quality foam products without massive capital investment.

Get Expert Consultation

Our technical team is ready to analyze your specific needs and recommend the optimal AC blowing agent grade for your application.

Request Free Samples

Test our premium AC blowing agents in your production process and experience the quality difference firsthand.

Download Technical Data

Access detailed specifications, application guides, and technical documentation for our complete product line.

Contact Jiangxi Yubo today to discover how our AC blowing agent solutions can enhance your foam manufacturing process while reducing costs and improving product performance.

© 2026 Jiangxi Yubo | Professional AC Blowing Agent Manufacturer

This document is for reference only based on industry knowledge and company information.

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