The color steel sandwich panel is composed of upper and lower layers of color coated steel plates as the panel, with thermal insulation materials such as polystyrene, polyurethane, phenolic foam, rock wool, etc. as the core material, and is continuously formed on a dedicated automated production line The process combines the core material and the panel into a whole building board, commonly known as "sandwich board". It has been widely recognized and used in building cleanrooms because of its strength, heat preservation, insulation, decoration, waterproofing, and simple construction. Has challenged traditional building materials such as masonry and has become a new force in the building materials industry.
1. Core material types and performance comparison
Color steel sandwich panel core materials can be divided into two categories according to the chemical composition of their products. One is organic chemical foam materials, such as polystyrene foam EPS, polyurethane foam PU, extruded polystyrene foam XPS, Phenolic foam PF, etc.; the other is inorganic fiber materials, such as rock wool board, foamed cement board, etc.
Polyurethane foam color steel sandwich panel is made of flame-retardant rigid polyurethane foam as the core material and color coated steel plate as the surface material. At present, domestic rigid polyurethane sandwich panels with metal surfaces are widely used in industrial plants, warehouses, stadiums, civil residences, villas, mobile houses, modular cold storage, and other buildings, but the disadvantage is that they are carried out under conditions of high temperature and strong alkali. The equipment requirements are high, the initial investment is relatively large, and industrialization is more difficult.
Polystyrene is the white foam we often see. This kind of color steel plate is cheap, water-resistant, and does not deform. Most of the mobile houses on the construction site are built with polystyrene sandwich panels, which are widely used, but polystyrene foam Sandwich panels are not fireproof and have the worst insulation effect.
EPS Sandwich Panel
3. Phenolic foam color steel sandwich panel PF
The phenolic foam color steel sandwich panel is a composite panel with a color steel plate as the surface material and phenolic foam as the core material. Phenolic foam is brittle, fragile, and corrosive to a certain extent. The acid remaining in the foam has a corrosive effect on metal materials.
4. Rock wool color steel sandwich panel
The rock wool color steel sandwich panel has better fire resistance, but the rock wool color steel plate is not waterproof, and it produces toxic substances in fire and causes greater pollution.
5. Paper honeycomb color steel sandwich panel
The paper honeycomb sandwich panel can completely recycle waste. It is a replacement product of polystyrene board, polyurethane, rock wool, and other materials. It is widely used in clean engineering fields such as electronics, hospital operating rooms, laboratories, etc., but has a waterproof effect Poor, the price is more expensive.
6. Aluminum peak nest sandwich panel
The aluminum honeycomb color steel sandwich panel is made of aluminum honeycomb core panels, which are composited with special high-strength glue and color steel plates, and are supported by special aluminum alloy keels, which are heated, pressurized, and cured. Compared with other sandwich panels, it has a lightweight and good flatness. It is a green building material, but it has the highest cost.