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Who knows the difference between glass wool and rock wool? Will you know the difference after reading this article
2021-11-01       Source:尊龙凯时人生就是搏

Glass wool and rock wool have been widely used as sound insulation building materials. But there is a certain difference between glass wool and rock wool, many people do not know. It is often thought that glass wool and rock wool are the same product. In fact, glass wool and rock wool are different. So how do we tell them apart? Today, Uetersen xiaobian will take you to know!



1. Different raw materials and processes


Glass wool board is a patented centrifugal technology, will melt glass fibrosis, by adding thermosetting resin based environmental protection formula binder curing processed from the plate products. The slender glass fiber has low thermal conductivity, which can well confine air, thus playing the role of heat preservation and insulation, sound absorption and noise reduction and safety protection. Glass wool board series is tight and strong material, smooth surface, strong compressive characteristics, after installation, the appearance is more crisp and beautiful.


Rock wool products is a new type of light thermal insulation material, made of basalt through high temperature melting and high-speed centrifugal equipment, and then add special binder and dustproof oil, by swinging with felt, through special equipment to change the fiber arrangement structure, and then solidify and form a new light thermal insulation material. According to the different use of processing diagenetic cotton board, rock wool felt and other products.



2. The performance of products is different


Compared with rock wool, glass wool has the advantages of low volume density, less slag ball content, low thermal conductivity, long service life, fiber toughness and so on.



3. Different uses of the product


Glass wool is generally used for insulation parts below 200 degrees Celsius, mainly used in general buildings or low-temperature pipelines; Rock wool is generally used for insulation parts below 500 degrees Celsius, mainly used for high-temperature pipes or power equipment.


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4. Different colors


Glass wool is yellow (and white and red), while rock wool is darker.



5. Different fiber diameters


The diameter of glass fiber is very fine, while the diameter of rock wool fiber is larger.



6. Different densities.


Glass wool has a lower density, while rock wool has a higher density.



The volume density of glass wool is 8kg/m3~98 kg/m3, and the volume density of rock wool is 40 kg/m3~200 kg/m3. The mechanical strength of rock wool is greater than that of glass wool. Rock wool is mainly used in external wall insulation.


Generally speaking, glass wool is a kind of glass fiber. It is a kind of inorganic fiber with good shape, small volume density, small thermal conductivity, heat preservation, sound absorption, corrosion resistance and good chemical stability.


Rock wool basalt as raw material, by high temperature melting processing of artificial inorganic fiber with light weight, low thermal conductivity, heat absorption, non-flammable characteristics.


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