Ceramic fiber wool, rock wool, and glass wool are widely used inorganic insulation materials, each playing a vital role in thermal insulation for residential, industrial, and commercial buildings. Especially in densely populated areas, higher demands are placed on materials' fire resistance, thermal insulation, and overall performance. Below is a systematic comparison of these three materials in terms of production process, product properties, and application scope.
01 Differences in Production Process
Ceramic Fiber Wool
A lightweight fibrous refractory material primarily composed of Al₂O₃ and SiO₂. It is produced using raw materials such as kaolin and flint clay, which are melted at high temperatures and then processed into pure inorganic fibers through high-pressure air blowing or three-roller centrifugal spinning.
Rock Wool
Made mainly from selected basalt, which is melted at high temperatures and formed into inorganic fibers using high-speed centrifugal equipment. Special binders and dust-prevention oils are then added, followed by layering and shaping to adjust the fiber structure, and finally curing into lightweight insulation material.
Glass Wool
Also an inorganic fiber material, it is primarily produced from natural minerals such as quartz sand, limestone, and dolomite, combined with chemical raw materials like soda ash and borax to form molten glass. In its molten state, it is blown or centrifugally spun into fine fluffy fibers. These fibers interlace to form a porous structure, providing excellent thermal and acoustic insulation properties.
02 Differences in Product Performance
All three materials share the common advantages of low bulk density, low slag ball content, low thermal conductivity, and good sound insulation. However, they differ in the following aspects:
Ceramic Fiber Wool: High fiber toughness, long service life, lowest thermal conductivity, and a maximum operating temperature exceeding 1000°C. Common models include 1050, 1260, and 1400 types.
Rock Wool: Maximum operating temperature around 600°C.
Glass Wool: Maximum operating temperature around 260°C.
03 Differences in Application
Glass Wool: Primarily used for insulation in environments below 200°C, such as general building insulation and low-temperature pipeline insulation.
Rock Wool: Suitable for medium-temperature insulation around 500°C, commonly used in high-temperature thermal pipelines and electrical equipment insulation.
Ceramic Fiber Wool: Suitable for a wide temperature range, from low-temperature insulation below 200°C to medium-temperature environments around 500°C, and particularly suited for high-temperature fireproof and thermal insulation applications above 1000°C
