Rock wool insulation board is currently an ideal fireproof, thermal insulation and sound-absorbing material. Due to the frequent occurrence of fire accidents in modern large buildings and the continuous improvement of fire performance requirements, rock wool board has a combustion performance of Class A non-combustible, and has good thermal insulation and sound absorption effects, so it is widely used in building walls and roofs. Insulation and sound insulation. So what is the density of the rock wool insulation board, that is, what is its bulk density? Its bulk density is a very important indicator of rock wool board, which is closely related to its quality. Let’s just say it briefly.
The bulk density of rock wool is generally 65KG~180KG/cubic, and the bulk density of rock wool board has a great relationship with its thermal conductivity and mechanical properties. The bulk density of the rock wool insulation board is different, which will affect its thermal resistance value. The larger the bulk density of the rock wool board, the denser the rock wool fiber, and the larger the thermal conductivity. , the tensile and compressive strengths are increased. As the density of rock wool decreases, the thermal conductivity of rock wool decreases, that is, the thermal insulation performance increases, but the mechanical properties decrease, and the tensile strength and compressive strength decrease (about 120kg/m³ is the inflection point of the relationship between thermal conductivity and bulk density) . According to different scope of use and fire protection requirements, the bulk density of rock wool insulation board will vary in production. Generally, in the color steel sandwich panel, the density is 80kg~120kg/cubic. In the external wall insulation, the density should reach more than 120-140KG/cubic. Those with a bulk density above 80KG/cubic can be mounted on the wall. If you want to tile, it is better to be above 140KG. The bulk density of grade A fireproof rock wool board is generally not less than 120KG/m³.
Therefore, when purchasing rock wool insulation boards, it is necessary to reasonably choose the bulk density of rock wool boards according to the actual use situation. It is not possible to go to extremes just for one indicator, but also to consider practical issues such as production costs. The bulk density of rock wool board is generally between 65KG and 180KG/cubic, and the bulk density of thermal insulation materials is generally not less than 80KG/cubic, and if it is higher than 200KG/cubic, the production difficulty will increase and the cost will increase. If you have any questions about purchasing rock wool insulation boards, you can consult us, Jishang Building Materials 13032698959 (Manager Zhang), and we will definitely give you a satisfactory answer.
