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JFoam™ A-216 is used in radome fabrication, antenna filling, structural panels, and aircraft control sections. A-216 is not to be used where cross section is greater than three inches. A-216 has a small uniform cell structure and a low viscosity at pour point.
Technical Data Sheet
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Knowde Enhanced TDS

Properties

Typical Properties
ValueUnitsTest Method / Conditions
Compressive Strength... 800--
Density (Molded)16pcf-
Dielectric Constant 9375........ 1.31MHz-
K-Factor0.3BTU in/hr ft F..ASTM D-256
Loss Tangent 9375. 1.7x 10^-3--
Maximum operating temperature250°F-
Modulus of Elasticity-... 23,000--
Modulus of Rigidity.....10,000--
Shear Strength....500--
Stress at 2% Strain..600--
Tensile Strength660--
Water Absorption 10' head 24 hours %....0.8--

Technical Details & Test Data

Typical Chemical Properties

J6 Polymers JFoam A-216 Typical Chemical Properties

Processing Parameters

Blend T component into R component. Mix for about two minutes. Pour at decrease of viscosity and perception of exothermic heat. When foaming action has ceased, postcure immediately. Average cure is two hours at 200°F. Cool part to 110-130°F before stripping from mold

Safety & Health

Health and Safety Information

Safety Data Sheets are available which provide information concerning the health and safety precautions that must be observed when handling this product. Before working with this product, you must read and become familiar with the available information on the risks involved, proper use, and handing. All polyurethane foam burns in varying degrees, which in turn liberates toxic gasses; the foam should be evaluated in its final form for compliance to existing standards in your industry. Nothing contained herein grants or extends a license, express or implied, in connection with patents, issued or pending, of the manufacturer or others. The information contained herein is based on the manufacturer's own study and the works of others. The manufacturer makes no warranties, expressed or implied, as to the accuracy, completeness, or adequacy of the information contained herein. The manufacturer shall not be liable (regardless of fault) to the vendee's employees, or anyone for any direct, special or consequential damages arising out of or in connection with the accuracy, completeness, adequacy or furnishing of such information.

Storage & Handling

Storage

Avoid moisture contamination during storage, handling, and processing. Store the polyol and isocyanate components from 65°F to 85°F. Do not expose isocyanate component to lower temperatures as freezing may occur.

Shelf Life

The shelf life is 12 months if stored in original unopened containers