Material and thickness of PUF/PIR polyurethane color steel rock wool sandwich panel
1. Plate material: The base material is hot-dip galvanized steel plate, the amount of double-sided galvanized steel is ≥200g/㎡ (the aluminum content is not less than 50%), and the yield strength is ≥345MPa. Plates that meet the requirements of the standard are required to have a recognized wind pressure test report, and the connectors should consider the pressure generated by the load and the effect of wind suction.
2. Wall panel outer panel: thickness ≥ 0.7, front coating thickness ≥ 5μm epoxy resin primer, outer coating thickness ≥ 20μm PVDF fluorocarbon topcoat, and the surface must be coated with a cleansing coating system to resist dust adhesion. The back is coated with an epoxy resin primer with a thickness of ≥5 μm, and a polyester resin topcoat with a thickness of ≥10 μm.
3. Wall panel inner panel: thickness ≥ 0.5, the front is coated with epoxy resin primer with a thickness of ≥ 5 μm, and the outer coating with a thickness of ≥ 15 μm is a corrosion-resistant polyester resin topcoat. The back is coated with epoxy resin primer with a thickness of ≥5 μm, and the polyester resin topcoat with a thickness of ≥5 μm.
4. Sandwich panel type: four-sided rock wool sandwich metal composite panel, the core material is not exposed. The core material is a rock wool panel with a fire rating of A, with a thickness ≥ 50, a density ≥ 120kg/m³, and a fire resistance rating of not less than 0.5 hours. The color of the sandwich steel plate shall be determined by Party A.
10cm dark nail color steel rock wool sandwich panel, 5cm thick tongue and groove color steel rock wool sandwich panel, 75mm hidden nail color steel rock wool sandwich panel. The rock wool composite panel with a surface steel plate thickness of 1.5mm is formed by pressing the upper and lower metal sheets separately, spraying two-component glue on the inner surface of the metal sheet, sealing the edges with polyurethane on both sides, filling the rock wool core material in the middle, and curing and shaping through the double crawler machine , and then cut to length to produce polyurethane edge-sealed rock wool sandwich panels. It has multiple advantages such as excellent fire prevention, light weight, beautiful appearance, strong heat preservation, good load-bearing, and short construction period.
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