Self-Healing Barrier Films for Vacuum Insulation Panels

Vacuum insulation panels (VIPs) are essential for applications requiring low thermal conductivity, such as refrigeration and energy-efficient building materials. Traditional VIPs, while effective, are costly and prone to damage, which compromises their insulation properties. The need for more durable and cost-effective VIPs has driven the development of new technologies.

Description

The patented technology introduces a self-healing, multi-layer barrier film for vacuum insulation panels. This film comprises a separator layer between a curing agent and a curable resin. Upon damage, the curing agent penetrates the separator due to a pressure differential and reacts with the curable resin, sealing any cuts or punctures. The curing agent and resin are selected for long-term stability and rapid reaction without external stimuli, ensuring the film's integrity and low thermal conductivity over time.

The method for manufacturing the self-healing barrier film involves applying the curing agent and resin as slurries on opposing sides of the separator. This process can be integrated into existing roll-to-roll manufacturing systems, making it scalable and cost-effective. The resulting barrier film is wrapped around an insulating core, evacuated to create a vacuum, and sealed to form the VIP.

Benefits

• Self-healing: Automatically repairs punctures, maintaining vacuum integrity and insulation performance.
• Cost-effective: Utilizes commercially available epoxies and curing agents, reducing production costs.
• Durability: Enhanced resistance to damage extends the lifespan of the insulation panels.
• Energy efficiency: Maintains low thermal conductivity, reducing energy consumption in applications.
• Scalability: Compatible with high-volume manufacturing processes.

Applications

• Building insulation: Improves energy efficiency and durability of building materials.
• Refrigeration: Provides reliable insulation for refrigerators and freezers.
• Shipping containers: Ensures thermal protection for temperature-sensitive goods.
• Automotive: Enhances insulation in vehicle components.
• Food packaging: Maintains temperature control for perishable goods.
• Pharmaceutical packaging: Protects medicines and vaccines during transport.

Contact

To learn more about this technology, email partnerships@ornl.gov or call 865-574-1051.