Fireproof coating for steel structures
A technology for fire retardant coatings and steel structures, applied in fire retardant coatings, epoxy resin coatings, coatings, etc., can solve the problems of fire retardant coatings failing to meet the requirements, and achieve good appearance decoration, good mechanical and chemical properties, and metal corrosion resistance. good performance
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Embodiment 1
[0011] A kind of steel structure fireproof paint, is made up of following components by weight: 20 parts of epoxy resin, 9.5 parts of acrylic resin, 4.1 parts of No. 200 gasoline, 5 parts of xylene, 6 parts of butyl acetate, fumed silica 0.7 parts, 0.2 parts of high molecular weight polyurethane, 7 parts of pentaerythritol, 7.6 parts of acetone, 17 parts of ammonium polyphosphate, 6.5 parts of melamine, 12 parts of antimony trioxide, 3.5 parts of titanium dioxide.
[0012] The thickness of the coating film is 2mm; the fire resistance limit is 72min, and the coating has no cracking, peeling and blistering after 15 cold and hot cycles; the drying time is fast, the surface is dry for 5 hours, the moisture resistance is good, and the coating is water resistant for 24 hours. Shedding phenomenon.
Embodiment 2
[0014] A fireproof coating for steel structures, which consists of the following components in parts by weight: 15 parts of epoxy resin, 7 parts of acrylic resin, 3.75 parts of No. 200 gasoline, 4 parts of xylene, 5 parts of butyl acetate, fumed silica 0.5 parts, 0.1 parts of high molecular weight polyurethane, 6 parts of pentaerythritol, 5 parts of acetone, 16 parts of ammonium polyphosphate, 5 parts of melamine, 10 parts of antimony trioxide, 2 parts of titanium dioxide.
[0015] The thickness of the coating film is 2.05mm; the fire resistance limit is 69min, and the coating has no cracking, peeling and blistering after 15 cold and hot cycles; the drying time is fast, the surface is dry for 6.1h, the moisture resistance is good, and the coating is water resistant for 24h. Blistering and exfoliation.
Embodiment 3
[0017] A fireproof coating for steel structures, which consists of the following components in parts by weight: 25 parts of epoxy resin, 13 parts of acrylic resin, 4.5 parts of No. 200 gasoline, 6 parts of xylene, 7 parts of butyl acetate, fumed silica 0.9 parts, 0.3 parts of high molecular weight polyurethane, 8 parts of pentaerythritol, 9 parts of acetone, 18 parts of ammonium polyphosphate, 8 parts of melamine, 14 parts of antimony trioxide, and 5 parts of titanium dioxide.
[0018] The thickness of the coating film is 2.02mm; the fire resistance limit is 63min, and the coating has no cracking, peeling and blistering after 15 cold and hot cycles; the drying time is fast, the surface is dry for 5.7h, the moisture resistance is good, and the coating is water resistant for 24h. Blistering and exfoliation.
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