Methods of making refrigerant releasing composite

A method of preparing a composite configured to release gaseous refrigerant therefrom at progressively elevated temperatures comprising:

• providing a substrate material comprising polarized fibers of glass, polyamide, polyphenylene sulfide, carbon or graphite;
• bonding one or more complex compounds of metal salt and a polar gaseous refrigerant on a first portion of said substrate material, said complex compounds capable of releasing said refrigerant in one or more first temperature ranges, and forming one or more layers of said first portion of substrate material;
• bonding one or more hydrated metal hydroxides on a second portion of said substrate material, said one or more hydrated metal hydroxides capable of releasing water in a second temperature range, higher than said first temperature ranges, and forming one or more layers of said second portion of substrate material;
• bonding a metal hydroxide on a third portion of said substrate material, said metal hydroxide capable of releasing water via conversion to a corresponding oxide in a third temperature range, higher than said first and second temperature ranges, and forming one or more layers of said third portion of substrate material;
• sealing said one or more layers of said portions of substrate material and/or the exterior surfaces of said portions of substrate material with a coating composition configured to prevent release of internal gaseous refrigerant therethrough at ambient temperature and pressure and breached to allow penetration and release of internal gaseous refrigerant therethrough from the composite interior at temperatures that result in a total internal gas pressure of 15% or more above exterior ambient or atmospheric pressure;
• and
• laminating said first, second and third portions of coated substrate to form said composite.

A method of preparing a composite configured to release gaseous refrigerant at progressively elevated temperatures comprising:

• providing a substrate material comprising polarized fibers;
• bonding two or more different metal compounds comprising one or more different complex compounds of a metal salt and a polar gas refrigerant on two or more different layer, respectively, of said substrate material;
• sealing said two or more different layers of said metal compound bonded substrate material and/or the exterior surfaces of said substrate material with a coating composition configured to prevent release of internal gaseous refrigerant therethrough at ambient temperature and pressure and breached to allow penetration and release of internal gaseous refrigerant therethrough from the composite interior at temperatures causing a total internal gas pressure of 15% or more above exterior ambient or atmospheric pressure;
• and
• laminating said sealed substrate layers to form said composite.