Polyurethane edge sealing rock wool sandwich board is internationally recognized as the best building envelope fire insulation board. It has low thermal conductivity, good load resistance, high bending strength, no water absorption, no decay, no insect bite, good flame retardancy and wide temperature resistance. Based on the physical characteristics and unique formula of polyurethane (PU. PIR), the polyurethane foaming agent was sprayed evenly on the color coated steel plate, and the foaming agent was foamed between the color coated steel plates to form a three-layer one-time forming polyurethane (PU. PIR) color steel composite sandwich panel. This new light building material is the perfect combination of color coated steel plate and polyurethane, which is the development direction of light building materials.
1) Excellent fireproof performance: the raw materials, production process and formula of polyurethane edge sealing rock wool sandwich board make it have good fireproof performance. The test shows that it has a fire resistance of more than 1000 ℃. Polyurethane edge sealing rock wool sandwich board has passed the test of gioroano S.p.A, the Italian authoritative testing organization. According to the standards of ISO, BS and din, the rock wool sandwich board meets the requirements of m.i.14/09/61 letter 91 and d.m.30/11/83. The test results are as follows: 50 mm thick polyurethane edge rock wool sandwich panel REI 30, 80 mm thick polyurethane edge rock wool sandwich panel REI 60, 100 mm thick polyurethane edge rock wool sandwich panel REI 120.
2) Good thermal insulation: the thermal insulation of Polyurethane double side sealing rock wool sandwich board is based on the thermal conductivity of rock wool λ= 043 w / m2k, calculated with the thickness of rock wool core material of corresponding proportion.
3) Sound insulation and absorption effect is remarkable: Polyurethane double side sealing rock wool sandwich board has a significant reduction effect on noise transmission, especially suitable for places with designated flights. In addition, after the use of rock wool roof panel, the impact of rain and hail on the roof steel plate of the building causes indoor sound, which is also significantly reduced. According to ISO 717 / 82 and uni 8270 / 7 standards, the sound insulation effect of the sandwich board with density of 120kg / m3 rock wool as core material can reach RW = 29 ~ 30dB.