| Adhesive for infrared stealth coating was synthesized by emulsion polymerization with isoprene and acrylonitrile as comonomers, and water-based infrared stealth coating was prepared by adhesive, metal fillers and additives. Relationship among structure of adhesive, types and morphology of metal fillers, types and amounts of dispersant and thickener in coating and infrared emissivity was studied. Infrared absorption was characterized by FT-IR, and infrared emissivity was measured by infrared emissometer. The results show that:water-based adhesive has low infrared emissivity at spectral range of 8-14μm can be used as adhesive for infrared stealth coating, flake aluminum powder as metal filler of infrared stealth coating has low infrared emissivity.Stealth coating was prepared by brushing infrared stealth coating on the carrier. Relationship among amounts of metal fillers, types of carrier, coating thickness in coating and infrared emissivity was studied. Infrared emissivity of coating was characterized by infrared emissometer, and thermostability of coating characterized by TG-DTA. The results show that:infrared emissivity of coating is 0.556 and temperature resistance is 341.8℃when the amount of aluminum powder up to 20～30%, coating thickness up to 20～40μm and brushing times is 1-2.Infrared camouflage fabric was prepared by brushing infrared stealth coating on the fabric carrier. Relationship among growth rate of coating and infrared emissivity, moisture permeability, wear resistance of coating was studied. Infrared emissivity of coating was characterized by infrared emissometer, wear resistance of material characterized by abrasion tester. The results show that:when the growth rate of fabric coating for 30%, fabric coating has good moisture permeability and wear resistance, the infrared emissivity of camouflage fabric coating is 0.62.Figure [12] table [16] reference [50]... |
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