1. Excellent fireproof performance: the raw materials, production process and formula of rock wool sandwich board make it have good fireproof performance. The test shows that it has a fire resistance of more than 1000 ° C. The rock wool sandwich board has passed the test of Italian testing organization gloroano S.p.A. according to the standards of international organization for Standardization (ISO), British BS and German DIN, the rock wool sandwich board meets the requirements of fire protection standards m.i14/09/61 letter 91 and d.m.30/11/83. The results are as follows: 1) 50 mm thick rock wool sandwich panel rel130 80 mm thick rock wool sandwich panel rel60 100 mm thick rock wool sandwich panel rel120
2. Good thermal insulation performance: the thermal insulation performance of rock wool sandwich board is calculated based on the thermal conductivity of rock wool = 0.043w / m2k and the thickness of rock wool core material of corresponding proportion.
3. Sound absorption and heat insulation effect is remarkable
Sound insulation: rock wool sandwich board has a significant role in reducing 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 / M ~ 3 rock wool as core material can reach RW = 29-30db
Sound absorption: rock wool sandwich board has excellent attraction effect at the same time, it can absorb sound in a wide frequency range. According to ISO 35 / 85 standard, the sound absorption performance of rock wool sandwich board reaches delta La = 15.7db (a).
