Rock Wool Boards With Strong Compressive Strength For Stable Structural Use

With its unique material structure and stable chemical properties, rock wool board possesses excellent durability. It is not easily damaged during long-term use and its performance degrades slowly, making it a preferred material with both reliability and economy in construction, industrial and other fields. The following explains its core durability performance, outstanding advantages and specific application scenarios.​

Performance

In terms of core durability performance, the sturdiness and durability of rock wool board stem from the dual support of its physical structure and chemical properties. From the perspective of physical structure, it is formed by curing molten rock after centrifugal fiberization. The interwoven fibers form a three-dimensional network structure, which endows it with good mechanical strength — the compressive strength can reach 40-150kPa, and the flexural strength is ≥15kPa. It is not easy to crack or deform under external extrusion and impact, and can maintain structural integrity even when bearing the weight of buildings or equipment loads for a long time. In terms of chemical properties, the main component of rock wool is silicate, which has stable chemical properties, is insoluble in water, and resistant to acid and alkali corrosion. It will not get damp and moldy in humid environments, nor will it undergo chemical decomposition when exposed to industrial waste gas or acid-alkali solutions. At the same time, it has excellent anti-aging performance. After ultraviolet irradiation and high-low temperature cycle (-20℃ to 70℃) tests, the attenuation rate of key indicators such as thermal conductivity and strength is less than 5%, effectively preventing the material from failing due to aging. In addition, it can resist moth and rat bites, and will not suffer structural damage due to biological erosion, further enhancing its durability.​

Advantages

Based on the above properties, the durability advantages of rock wool board are mainly reflected in two aspects: "long-term stability" and "economic energy saving". On the one hand, its service life is as long as 20-30 years, far exceeding that of traditional thermal insulation materials (such as polystyrene boards with a service life of about 10-15 years). There is no need for frequent replacement during the service cycle, reducing the labor and time costs of maintenance and renovation. On the other hand, its performance remains stable during long-term use, and the core functions such as thermal insulation and sound insulation will not decline due to insufficient durability, avoiding secondary energy waste caused by material failure (such as increased heating and cooling energy consumption due to reduced building insulation performance). At the same time, its durability enables it to adapt to complex and harsh use environments, whether it is the external walls of buildings in high-temperature and high-humidity southern areas, roofs in cold northern areas, industrial workshops with more dust, or transportation facilities with frequent vibrations, it can play a stable role and has a wide range of applications.​

Applications

In terms of specific applications, the durability of rock wool board is fully utilized in various fields. In the construction field, it is often used in external wall insulation systems, roof insulation layers and partition wall filling. In external wall insulation, its compressive and impact resistance can resist wind, rain erosion and external impact, preventing the insulation layer from cracking and falling off. When used for roof insulation, it can bear the load of roof waterproof layers and solar equipment, and its moisture resistance can prevent performance attenuation caused by rainwater penetration. In the industrial field, as an insulation layer for equipment and pipelines, it can withstand vibration and high temperature during equipment operation (long-term use temperature can reach 200℃, short-term up to 400℃), such as the insulation of power plant steam pipelines and chemical plant reaction kettles. Even in high-temperature and vibrating environments for a long time, there will be no fiber falling off or structural damage. At the same time, it is used for sound insulation and thermal insulation of walls and roofs in industrial plants, which can resist mechanical vibration and dust erosion in the workshop and maintain long-term stable sound insulation and thermal insulation effects. In the transportation field, it is used for the sound insulation layer of the floor and wall of high-speed rail and subway carriages, which can withstand frequent vibration and impact without damage and maintain good sound insulation performance. Used as the thermal insulation and fireproof layer of ship cabins, it can resist seawater erosion and hull vibration, ensuring safety and stability during long-term use. In addition, in the agricultural field, rock wool boards can also be used for wall insulation of greenhouses. Their weather resistance and durability can adapt to complex outdoor climates, extend the service life of greenhouses and reduce maintenance costs.​