Refrigerant releasing composite

A composite configured to release refrigerant therefrom comprises a substrate material comprising one or more layers of polarized fibers of glass, polyamide, polyphenylene sulfide, carbon or graphite having bonded thereon a metal compound comprising a complex compound of a polar gaseous refrigerant and a metal salt and/or a hydrated metal hydroxide and/or a metal hydroxide of a metal selected from the group consisting of alkali metal, alkaline earth metal, transition metal, zinc, cadmium, tin, aluminum, or two or more thereof, at a concentration of at least about 0.3 grams/cc of open substrate material volume, and wherein each layer or multiple layers and/or the exterior surface of said composite is sealed with a coating composition capable of preventing the penetration of internal gaseous refrigerant from the composite therethrough at ambient temperatures and pressure, preventing water absorption by exposure to ambient atmospheric conditions and allowing penetration and release of gaseous refrigerant therethrough from the composite interior at temperatures causing total internal gas pressures of 15% or more above exterior pressure for such refrigerant release.