The thermal insulation, heat insulation and sound absorption properties of color steel sandwich panel mainly depend on its core material - thermal insulation material. This kind of material not only needs good temperature, but also needs enough strength and stiffness. It also needs good adhesion with color steel plate. Only in this way, the composite plate can withstand the design load and meet the functional requirements of the building. The following small edition of Jinan Caigang Sandwich Plate Factory will give you a detailed summary of the current types and status of commonly used insulation cores!
The core material of color steel sandwich panels can be divided into two categories according to their chemical composition, that is, organic chemical foam materials, such as polyurethane foam, polystyrene foam, phenolic foam, triamine foam, etc. The other is inorganic fiber materials, such as rock wool board, mineral wool board, glass wool board and so on.
At present, the core materials of thermal insulation layer of color steel sandwich panels used by domestic color steel sandwich panels manufacturers are polystyrene sandwich panels (EPS sandwich panels), rigid polyurethane sandwich panels (PU sandwich panels), rock wool sandwich panels (RW sandwich panels). However, polyurethane, polystyrene and other organic materials have low heat resistance, easy to burn in case of fire, and easy to produce toxic gases, which become one of the main factors of fire accidents.
However, the commonly used color steel sandwich panels insulation core material polyurethane foam itself is not fireproof, and a large amount of smoke generated after combustion contains hydrogen cyanide, which is harmful to human health. Polyphenylene board has poor external thermal insulation performance besides non-fireproof and shrinkage after long use. Polystyrene foam and polyurethane foam are flammable, not high temperature resistant, seriously affect the quality of building engineering and fire safety, are currently being restricted by the fire department. Although inorganic mineral wool materials such as rock wool and glass wool can meet the requirements of fire prevention, they are not friendly to the environment (floating cotton floss is harmful to human body during construction), easy to breed bacteria, have high water absorption, poor insulation effect, and are not strong enough, and have short service life.
The new phenolic foam (PF) has excellent performance in flame retardancy and toxicity. Its market prospect is broad and its economic potential is huge. It will replace other foam materials step by step.
Above is the wonderful content provided by today's edition. The relevant technical knowledge is provided by Jinan Caigang Sandwich Plate Factory. More small partners are welcome to leave us a message and comment: http://www.jnhscg.com.