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HomeLast-A-Foam® FR-3700 Series Performance Core
Last-A-Foam® FR-3700 Series Performance Core
OVERVIEW
Last-A-Foam® FR-3700 Performance Core Series - FR-3700 is a CFC-free, rigid, closed-cell, flame-retardant polyurethane foam available in densities ranging from 3 to 40 pounds per cubic foot. It exhibits a high strength-to-weight ratio due to its cellular structure and cross-linked resin. Because of its closed-cell structure, LAST-A-FOAM FR-3700 has great resistance to water absorption, and will not swell, crack, or split on exposure to water. It particularly supports the following industries:

Aerospace
FR-3700 meets the requirements of aircraft BMS 8:133. This rigid, polyurethane foam is comparable to the FR-6700 in strength, temperature resistance and flammability performance. However, the FR-3700 is tougher (less friable) for cutting crisper edges.

Medical
High-density rigid polyurethane FR-3700 foam is used to simulate human bone as a test medium within the medical device industry.

Nuclear
FR-3700 foams are chosen for nuclear material applications and transportation of extremely hazardous waste. When used as an impact- and fire-insulation liner in transport containers, FR-3700 can be engineered to provide the ultimate in fire and collision protection for hazardous cargo, outperforming wood and other polymeric materials. The FR-3700 formulation is specially designed to allow predictable impact-absorption performance under dynamic loading. At the same time, it provides an intumescent char layer that insulates and protects hazardous materials, even when exposed to pool-fire conditions.

Radomes:
Use LAST-A-FOAM® 3700 Performance Core Series for constructing durable, weatherproof radomes. Impervious to moisture and transparent to radio signals, they protect marine, aerospace and recreational microwave antennas. Their high Tg suits prepregs that cure at higher temperatures.

In particular, our FR-3700 foam has a solid history of successful use in radioactive materials (RAM) transportation packages. The regulations governing RAM packages often require energy absorption of 30-foot free drops and exposure to a 1,475°F, 30-minute fire under accident conditions. Our FR-3700 series foam is one of very few materials that can support the RAM package design in mitigating both mechanical and thermal energy.

Applications: - Models and design prototypes - Composite core, especially where flame retardation is important - Honeycomb edge closeout for aircraft interior sandwich panels used in overhead storage bins, passenger cabin class dividers, galleys and lavatories - Radioactive materials (RAM) transportation packages - Impact- and fire-insulation liner for hazardous waste containers - Vacuum form dies and mold patterns - Artificial human bone test media - Core material for composite prostheses - Load bearing

FEATURES AND BENEFITS
Advantages of Last-A-Foam® FR-3700 Performance Core Series:
  • Stable and inert
  • Flame retardant
  • High strength-to-weight ratio from cross-linked resin
  • Resistant to most chemicals and solvents
  • Easily shaped with common woodworking tools
  • Performs well as wood replacement
  • Will not support fungal growth
  •    (Last-A-Foam FR-3700 Performance Core Series) Last-A-Foam® FR-3700 Series Performance Core


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