ASTM International Standard Specification for Adhesive for Bonding Foam Cored Sandwich Panels (160 °F Elevated Humidity Service), Type I Panels ASTM E1800-21

This specification covers two-part paste adhesives for bonding foam core sandwich panels. The adhesive may be used for new production or depot maintenance. The adhesive should be suitable for forming bonds that can withstand long-term exposure to temperatures, and also withstand combinations of stress, temperature, and humidity. The adhesives shall be used for bonding aluminum alloy facing to foam core, inserts, edge attachments, and other components of a foam cored sandwich panel. Materials shall be tested and shall conform to the material requirements, working characteristics; and to the specified values of curing time, temperature, and pressure; mix ratio, storage life, adhesive life, humidity exposure, and salt spray exposure.