Foam rubber is a versatile material prized for its lightweight structure, energy absorption, and thermal insulation properties. This guide explores its production process while highlighting two high-performance variants: NBR/PVC blends and EPDM-based foam rubber – materials engineered to meet modern industrial demands. Also called cellular rubber, this type of rubber is created by introducing gas bubbles into a polymer matrix, forming a porous structure. This process yields materials with:
Research shows these properties make it ideal for applications ranging from personal protective equipment to automotive seals.
Base Components:
Component Preparation
Cell Structure Formation
Key Insight: The choice of base polymer and processing parameters (temperature, blowing agent type) directly determines the foam's cell structure and performance.
This innovative combination offers:
Optimized Formula:
Hairui's R&D studies reveal a 60:40 ~ 70:30 NBR/PVC ratio achieves optimal balance between elasticity (NBR) and structural integrity (PVC).
Performance Highlights:
Property | Improvement vs Pure NBR |
Tear Strength | +25-40% |
Ozone Resistance | 3X longer lifespan |
Compression Set | 15-20% reduction |
Technical Breakthrough: Advanced dynamic vulcanization techniques create a "sea-island" microstructure where crosslinked NBR particles disperse in PVC, enhancing mechanical stability.
Engineered for demanding applications with:
Manufacturing Innovations:
1. Salt-Leaching: Creates uniform pores by dissolving NaCl particles post-curing.
2. Chemical Blowing: Azodicarbonamide decomposes to form nitrogen bubbles.
3. Phase-Change Integration: Paraffin wax additives enable thermal energy storage (TES) capacity.
Case Study: Automotive door seals using EPDM foam show 47% better noise reduction vs traditional rubber.
Physical Properties:
Performance Metrics:
HVACR Systems:
Construction Industry:
Manufacturing Innovation:
Material Development:
Consider specific requirements:
Match material properties:
Foam rubber technology continues evolving, offering improved performance and efficiency for modern industrial applications. Understanding both manufacturing processes and material properties ensures optimal product selection and application success.
As a leading Chinese rubber supplier, Hairui Rubber is dedicated to delivering foam rubber and elastomer solutions that meet the most demanding industrial requirements. Our expertise transforms technical challenges into innovative opportunities.
Need Technical Support?
Contact our materials engineering team for specialized foam formulation guidance based on your specific application requirements.