Lightweight Low-density Rock Wool Boards With Preeminent Heat Preservation Performance

Rock wool boards are produced using natural minerals like basalt as raw materials. The rocks are melted at high temperatures, then spun into fibers via centrifugal force. The density of rock wool board is the key indicator determining its performance and application. Products with different densities show significant differences in strength, insulation properties, and cost. Low-density rock wool boards typically have a density ranging from 40 to 80 kg/m³. They feature a relatively low thermal conductivity, generally between 0.038 and 0.045 W/(m·K), offering excellent thermal insulation performance. However, their compressive strength is weak with poor flexural resistance. They are lightweight and fluffy, with good air permeability. Although classified as A1 non-combustible materials, their structural stability is poor at high temperatures and they tend to shrink.

Advantages

Their advantages lie in high insulation efficiency; under the same thickness, their insulation effect is better than that of medium and high-density products, which can reduce material usage. They also have low costs due to less consumption of raw materials in production. Additionally, they are lightweight, easy to carry and cut, making them suitable for manual operations.

Applications

The main application scenarios of low-density rock wool boards are concentrated in non-load-bearing, light-load environments that require thermal insulation or sound absorption. In terms of non-load-bearing indoor thermal insulation, they are suitable for dry and non-loaded scenarios such as filling wall interlayers, insulating interior partitions, and attic insulation. Thanks to their porous structure, they can be used for ceiling sound-absorbing layers or wall sound-absorbing filling in places like conference rooms, offices, and machine rooms, with a noise reduction coefficient (NRC) generally ranging from 0.7 to 0.9, which can effectively achieve sound absorption and noise reduction. In addition, they can also be used for the outer insulation of light pipes without load-bearing requirements, such as air conditioning ducts and low-temperature water pipes. They can also be used for ceiling sound-absorbing layers or wall sound-absorbing filling in places like conference rooms, offices, and machine rooms by utilizing their porous structure. Moreover, they are applicable to the outer insulation of light pipes such as air conditioning ducts and low-temperature water pipes.

Comparison of Rock Wool Boards in Different Density

    Pengzhou Shiyida Building Materials Co., Ltd. was established in 2011 and is located in Chengdu, a tourist city in China. It is one of the domestic manufacturers engaged in new-type refractory, thermal insulation and sound insulation materials. The factory is located in Pengzhou, with more than 100 employees and a factory area of 30,000 square meters. It is a thermal insulation material production enterprise mainly engaged in new-type refractory, thermal insulation and sound insulation materials, and is mainly engaged in the production and sales of rock wool boards and external wall rock wool board.
    The company takes customers as the center, takes high and new technology as the guide, keeps pace with international technology, strictly controls product quality, so that all kinds of our products are sold well in 29 provinces, municipalities and autonomous regions in China, and are widely used in heating, construction, petroleum, electric power, chemical industry, refrigeration, ships, aerospace, smelting, central air conditioning and other industries. The product quality is in a leading position in the industry, and has been recognized by relevant departments and highly praised by customers, with a high reputation.
    Adhering to the business philosophy of "integrity-based, service-oriented", the company's various businesses and management levels continue to develop, and the market area radiates from "centering on Chengdu to the whole Sichuan". To provide users with simple and fast purchasing methods, the company expects to become a priority in the thermal insulation material industry in Sichuan, continuously improve marketing service capabilities, establish good cooperative relations with customers, make progress together and create brilliance together!