Rock wool board is a kind of inorganic fiber thermal insulation material made of basalt, pyroxene and other ores, which is often used for thermal insulation, thermal insulation, fire prevention and other fields of construction and industry. There are many specifications of the rock wool board, such as: thickness, density, length, etc., and the application fields of different specifications are not necessarily the same.

Recently, a small partner consulted small editor: What is the meaning of the density of rock wool board 80kg?

Rockwool board density refers to the ratio of the mass of the rockwool board material to its volume, usually expressed in kilograms/cubic meters (kg/m3). Therefore, when we say "rock wool board density 80kg", it means that the mass of this rock wool board per cubic meter is 80kg.

The rock wool board with a density of 80kg has high thermal insulation, fire resistance, compressive, tensile and impact resistance, which can effectively reduce energy loss and keep the indoor temperature stable, and can withstand greater pressure and the influence of the external environment, and is not easy to deformation and damage. This kind of rock wool board is usually used for insulation and sound insulation of walls, roofs, floors and pipes of buildings.

Some people think that the greater the density of the rock wool board, does it mean that its insulation performance is better?

This is not the case, for low-density rock wool board, the greater the density of the rock wool board, the greater the mass of the rock wool board per unit volume, which means that its insulation performance is better. However, for high-density rock wool board, it is the opposite, the higher the density, the smaller the gas space, resulting in increased thermal radiation and convective heat loss in the rock wool board, thus increasing the thermal conductivity.

At present, the better density range of rock wool board is 80~120kg. In this interval, the thermal conductivity of the rock wool board is relatively low, the thermal insulation performance is good, and it also has mechanical properties, moderate load, low cost, and cost-effective.