Pengzhou Shiyida Building Materials Co., Ltd.
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Rock Wool Boards With Remarkable Performance Advantages Widely Used In Various Fields
As a mainstream inorganic thermal insulation material, rock wool boards have significant performance differences from organic thermal insulation materials (such as expanded polystyrene (EPS) boards, extruded polystyrene (XPS) boards) and other inorganic thermal insulation materials (such as glass wool, foam glass). Their advantages and disadvantages can be analyzed from multiple dimensions.
Advantages and Performance
In terms of advantages, fire resistance is the core strength of rock wool boards. Made from natural rocks like basalt through high-temperature melting, they are Class A non-combustible materials. They do not burn, emit smoke, or release toxic and harmful gases when exposed to open flames or high temperatures. This far surpasses organic thermal insulation materials (which are usually Class B1/B2) and is also better than some inorganic materials that are prone to cracking. Thus, they are suitable for areas with strict fire safety requirements, such as building fire barriers, subway carriages, etc. Rock wool boards also have stable thermal insulation performance, with a low thermal conductivity (0.036-0.044 W/(m·K)). They exhibit strong resistance to high and low temperatures within the range of -268℃ to 700℃, and their thermal insulation effect will not deteriorate due to temperature changes. This makes them more suitable for cold northern regions or high-temperature industrial environments compared to organic thermal insulation materials that are prone to aging. Meanwhile, the porous fiber structure inside rock wool boards can effectively absorb medium and high-frequency noise, providing both sound insulation and sound absorption effects. Although their sound absorption is slightly inferior to that of glass wool, their overall performance is more balanced, making them applicable in scenarios such as partition walls between households and KTV rooms. Additionally, they are environmentally friendly (free of formaldehyde), recyclable, resistant to aging and corrosion, with a service life of 20-30 years, which is much longer than that of organic thermal insulation materials. They can also be processed into various forms to meet the needs of construction, industry, transportation and other fields.
Comparison with Other Materials
When compared with mainstream thermal insulation materials, in terms of fire rating, rock wool boards and glass wool are Class A, while EPS and XPS are Class B1/B2. XPS has the lowest thermal conductivity, while rock wool boards have a slightly higher one. XPS has the lowest water absorption rate, while rock wool boards have a relatively high one. Rock wool boards have the highest bulk density, and EPS has the lowest. In terms of sound insulation and absorption, glass wool is excellent, rock wool boards are good, and EPS and XPS are poor. The service life of rock wool boards and glass wool reaches 20-30 years, while that of EPS is shorter. The initial cost of rock wool boards is relatively high, and that of EPS is low.
In conclusion, rock wool boards are the preferred choice for "safety-first" scenarios, such as areas with high requirements for fire protection and environmental protection. However, one must accept the issues of cost, construction difficulty, and space occupation. If the budget is limited and fire protection requirements are not strict, EPS/XPS can be selected; if sound absorption is the priority, glass wool is a better option.
