What is the difference between rock wool and glass wool? The difference between glass wool and rockwool lies in the raw materials used. The main material of glass wool is glass slag. After high-temperature melting, it is made into glass wool products through centrifugal fiber technology, while the main material of rock mineral wool is basalt. , The density is higher than that of glass wool, and it is more resistant to low temperature than glass wool. Rock mineral wool is mostly used for fire prevention and sound insulation materials, while glass wool is more used for heat preservation and sound absorption materials.
The difference in production process, glass wool is a kind of natural inorganic fiber, using natural ore such as quartz sand, limestone, dolomite as the main raw material, combined with some chemical raw materials such as soda ash and borax to melt into glass. In the form of ablation, it is blown by external force to form flocculent fine fibers, and the fibers are three-dimensionally intersected and intertwined with each other, resulting in many thick gaps. This kind of gap can be regarded as pores, therefore, glass wool can be regarded as a porous material, which has good heat insulation and sound absorption. Rock wool is made of refined basalt as the main raw material. It is a new type of lightweight thermal insulation material made by adding special binder and dust-proof oil, laying felt on the swing belt, changing the fiber arrangement structure through special equipment, and curing the fiber structure.
The difference in production performance is that glass wool has lower bulk density, less slag ball content, lower thermal conductivity, longer service life, and greater fiber toughness than rock basalt wool. However, the operating temperature of rock mineral wool is about 600 ° C, and glass wool is only about 260 ° C.
The difference in product use, glass wool is generally used for heat preservation parts below 200 °C, and is mostly used for heat preservation of ordinary buildings or high-temperature pipelines, rock basalt wool is generally used for heat preservation parts with a temperature of 500 °C, and is mostly used for high-temperature heat pipes or electrical equipment insulation.
The difference in product acoustics is that the fibers of glass wool are relatively slender, and the distribution is more compact and even. Generally speaking, glass wool is stronger and less prone to looseness, but this is also relative. Compared with glass wool, the fibers of rock wool are thicker and shorter. When rock mineral wool and glass wool have the same density and thickness, the sound absorption and sound insulation effect of glass wool is about 1.2 times that of rock mineral wool in the newly installed KTV room sound insulation decoration. the difference between. But in general, rock mineral wool is more suitable for sound insulation materials, and glass wool is more suitable for sound absorption materials.
