A composite gel fire-resistant cable and its preparation method
A composite gel and fire-resistant cable technology, which is applied in the direction of cable/conductor manufacturing, insulated cables, cables, etc., to achieve the effect of solving the inconvenience of installation, improving the inconvenience of laying, installation and transportation, and excellent mechanical properties
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Embodiment 1
[0022] 1. The metal conductor is made of aluminum alloy or copper.
[0023] 2. Dissolve citric acid and basic magnesium carbonate in deionized water at a ratio of 2:1 at 20°C, and perform magnetic stirring for 1 hour. During the stirring process, keep the pH value of the solution at 4.0. Heat the solution to 50°C, evaporate and dehydrate under reduced pressure at this temperature to obtain a sol, add 5.8% by weight of alumina fibers with a length of 20 μm and a diameter of 0.4 μm, add 0.5% by weight, and have an average particle size of 22nm Nano MgF 2 Particles (i.e. nano MgF 2 powder or nano MgF 2 powder), electromagnetically stirred for 50 minutes to gradually gel the composite sol with alumina fibers as the skeleton.
[0024] 3. Use an extruder to extrude the composite wet gel onto the metal conductor at a temperature of 95°C and a pressure of 120Mpa, and make it pass through an aging treatment box at 45°C and filled with absolute ethanol at a temperature of 2-3 ℃, fil...
Embodiment 2
[0030] 1. The metal conductor is made of aluminum alloy or copper.
[0031] 2. Dissolve citric acid and basic magnesium carbonate in deionized water at a material ratio of 3:1 at 20°C, and perform magnetic stirring for 1 hour. During the stirring process, keep the pH value of the solution at 4.0. Heat the solution to 50°C, evaporate and dehydrate under reduced pressure at this temperature to obtain a sol, add 10.8% by weight of alumina fibers with a length of 25 μm and a diameter of 0.5 μm, add 1.0% by weight, and have an average particle size of 23nm Nano MgF 2 Particles (i.e. nano MgF 2 powder or nano MgF 2 powder), electromagnetically stirred for 50 minutes to gradually gel the composite sol with alumina fibers as the skeleton.
[0032] 3. Use an extruder to extrude the composite wet gel onto the metal conductor at a temperature of 105°C and a pressure of 120Mpa, and make it go through an aging treatment box at 45°C filled with absolute ethanol and a temperature of 2-3 ...
Embodiment 3
[0038] 1. The metal conductor is made of aluminum alloy or copper.
[0039] 2. Dissolve citric acid and basic magnesium carbonate in deionized water at a material ratio of 4:1 at 20°C, and perform magnetic stirring for 1 hour. During the stirring process, keep the pH value of the solution at 4.0. Heat the solution to 50°C, and evaporate and dehydrate under reduced pressure at this temperature to obtain a sol, add 15.2% by weight of alumina fibers with a length of 35 μm and a diameter of 0.7 μm, add 1.5% by weight, and have an average particle size of 25nm Nano MgF 2 Particles (i.e. nano MgF 2 powder or nano MgF 2 powder), electromagnetically stirred for 50 minutes to gradually gel the composite sol with alumina fibers as the skeleton.
[0040] 3. Using an extruder, extrude the composite wet gel onto the metal conductor at a temperature of 120°C and a pressure of 120Mpa, and make it go through an aging treatment box at 45°C filled with absolute ethanol and a temperature of 2...
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