Advantages of Polyurethane double sealed rock wool sandwich board
● excellent fireproof performance: the raw material, production technology and formula of the polyurethane double sealing wool sandwich board, so that it has good fireproof performance. The test shows that it has the fire resistance of more than 1000 degrees C. Double sealing polyurethane rockwool sandwich panel has passed the Italy authority testing organization GIOROANO S.P.A test, in accordance with the international standards organization (ISO), British BS and German DIN standard, rockwool sandwich panel to meet the fire safety standard M.I. 14/09/61 Letter No. 91 and D.M. 30/11/83 requirements. The test results are as follows: 50mm thick polyurethane double side rock wool sandwich panel REI 30, 80mm thick polyurethane double side blocked rock cotton sandwich panel, REI 60100mm thick polyurethane, double side rock wool sandwich panel REI 120.
● thermal insulation is good: thermal insulation of Polyurethane double side rock wool sandwich panel is based on the thermal conductivity of rock wool &lambda, =0.043 W / m2 K, and the thickness of rock wool core material is calculated according to the corresponding thickness.
● sound insulation and sound absorption effect is remarkable: Polyurethane double side rock wool sandwich panel has a significant reduction effect on noise transmission, especially for designated flights. In addition, after using the roof of the rock wool roof, the rain and hail impact on the roof plate of the building, causing the sound of the indoor sound and also obviously weakened. By testing, according to ISO 717/82 and UNI 8270/7 standard, using the sandwich panel with density of 120kg/m3 rock wool as core material, the sound insulation effect can reach RW=29~30 dB.
Rock wool sandwich panels also have excellent sound absorption effect, which can absorb sound in a wide range of frequencies. According to the ISO 354/85 standard, the sound absorption performance level of the rock wool sandwich panel reaches DELTA LA=15.7 dB (A).
The polyurethane double side rock wool sandwich panel fully exerts the unique properties of rock wool core material, and has remarkable effect in fire prevention, heat preservation, heat insulation, sound absorption and sound insulation. At the same time, it preserves the advantages of polyurethane molding, sealing, high strength and no water absorption. This material is the advent of the construction of a revolutionary change, the advantages of polyurethane and rock wool has been fully integrated, reject the traditional plate defects. In a sense, the two sides of the polyurethane core board can not be compared with the ordinary rock wool sandwich board.