Characteristic of the Fire Prevention
The raw material of rockwool sandwich for exterior wall is natural volcanic rock, which is fire-proof material for non-combustible building materials.
Main fire protection characteristics:
It has the highest fire prevention level A1, which can effectively prevent the spread of fire.
The size is very stable and will not elongate, shrink or deform in fire.
High temperature resistance, melting point higher than 1000 C.
No smoke or droplets/debris are produced in a fire.
No harmful substances and gases will be released in the fire.
Outer wall of the rockwool sandwich
has slender and flexible fibers and low slag ball content. Therefore, the thermal conductivity is low and has excellent thermal insulation effect.
Sound absorption and noise reduction
Rockwool sandwich is an ideal sound insulation material, a large number of slender fibers form a porous connection structure, which determines that Schmida rock wool is an excellent sound absorption and noise reduction material.
The hydrophobic rock wool product has 99.9% hydrophobicity, very low water absorption and no capillary permeation.
The volume moisture absorption rate of rockwool sandwich is less than 0.2% under the environment of high relative humidity, and the mass moisture absorption rate is less than 0.3% according to ASTM C1104 or ASTM 1104M method.
Rockwool chemical properties are stable, PH value is 7-8, is neutral or weak alkaline, carbon steel, stainless steel, aluminum and other metal materials are not corroded.