| 摘要 |
FIELD: transport.SUBSTANCE: invention relates to space engineering and concerns creation of a temperature-regulating material for applying to a space object (SO) surface. The temperature-regulating material contains a substrate in the form of an optically transparent glass, a highly-reflective layer of silver, a protective layer. The highly-reflective layer of silver has a width of 0.10÷0.15 micron. For the protective layer stainless steel with thickness of 0.10÷0.20 micron is used. On the protective layer an epoxy varnish with thickness of 20÷30 micron is applied. Prior to covering the substrate with the highly-reflective silver layer, the substrate chemical cleaning is performed with simultaneous ultrasound treating for 3 minutes. Then the substrate is removed from the solution, rinsed successively with warm, cold and distilled water, each time for 1-1.5 min, and dried in the air. The surface is treated with glow discharge for additional purification and activation of the substrate surface. Then, the highly-reflective layer and the protective layer is successively applied in a vacuum chamber by magnetron sputtering without the vacuum chamber unsealing in one technological cycle successively positioning the substrate under the sources with a silver target and a stainless steel target. On the substrate with the highly-reflective layer and protective layer, the epoxy varnish layer of 20÷30 micron in thickness is applied for additional protection against atmospheric corrosion and for better adhesion of the coated substrate to adhesive composition. During temperature-regulating material attachment, material bonding using an adhesive composition with an electroconductive filler is performed with the help of weights. As the electroconductive filler, aluminium or silver powder is used in a quantity of 20±5% and 10±5% respectively. This powder provides required electroconductive properties of the temperature-regulating material surface.EFFECT: better radiant heat characteristics of material, higher processability of coating, higher adhesion values of the coated substrate to the SO body surface.3 cl, 2 dwg |
