Dunapol Expanding Foam - Isocyanate Part A

Dunapol A310 Isocyanate – Expanding Foam (Component A)

Dunapol A310 Isocyanate is the Part A of a two-part polyurethane expanding foam system designed for structural filling, flotation, insulation, and composite core applications. When combined with the appropriate Dunapol Part B polyol, it reacts to form a rigid, closed-cell foam with excellent strength, dimensional stability, and low water absorption.

Important: This listing is for Part A (Isocyanate) only. Pair with the appropriate Dunapol Part B to complete the foam system.

Compatible Part B Systems (Choose One Density)

• Dunapol C 035 HL – 2.2 lb density
• Dunapol C 096 L – 5 lb density
• Dunapol C 224 L – 10 lb density
• Dunapol C 320 L – 15 lb density

Key Benefits

• Closed-cell rigid foam for buoyancy, cavity filling, and insulation
• Low water absorption and excellent moisture resistance
• Uniform expansion when mixed with matched Dunapol polyols
• High strength-to-weight ratio
• Suitable for pour-in-place, mold casting, and core filling

Common Applications

• Marine flotation and void filling
• Composite sandwich core creation
• Structural reinforcement of hollow parts
• Insulation of panels, enclosures, and cavities
• Lightweight tooling and prototypes

Technical Notes

• Chemistry: MDI-based isocyanate
• Foam Type: Rigid, closed-cell polyurethane
• Performance: Provides excellent structural support and insulation when used with the matched Dunapol Part B system

Storage & Shelf Life

• Store in a cool, dry location away from moisture
• Reseal containers immediately after use
• Follow manufacturer shelf-life and FIFO guidelines