Glass wool is a traditional thermal insulation material, which has been used in foreign families since the 1930s, and China began to produce glass wool in the 1950s. This material has a long history and is still used in modern architecture today.

First, what is glass wool

Glass wool consists of very fine glass fibers. There are 4 types of classification according to the shape, commonly used glass wool board, glass wool blanket two types, the remaining types have glass wool shell, glass sliver. Glass wool can be used on unfinished walls, floors and ceilings to slow the transmission of heat and cold in residential and commercial insulation projects. At the same time can also be used in industry, ships, pipelines and other fields of thermal insulation, fire insulation.

Second, glass wool production materials

Glass wool is made of quartz sand (sand) and recycled glass as the main raw materials, in addition to aluminum oxide, calcium oxide, boron oxide and so on. The material is mixed and melted in a furnace at 1350℃, and then made into silk by centrifugal process, and then cooled and added resin as a binder.

Third, the working principle of glass wool

Glass wool as an insulator can slow the transmission of heat, cold and sound in the structure. The material does this by trapping air, and limiting the amount of air going in and out of a home can make a home comfortable, keeping the room warm in winter and cool in summer. It is important to note that fiberglass restricts the flow of air, but does not stop it completely.

Four, the advantages and disadvantages of glass wool

Glass wool has the advantages of good thermal insulation performance, sound insulation, sound absorption, corrosion resistance, class A non-combustible material, simple construction and cheap price. However, there are also certain disadvantages: glass wool direct contact with the skin will cause stinging, itching, etc., in addition, glass wool will have a certain moisture absorption. Therefore, the use of glass wool needs to be well protected and sealed protection, can not be exposed to the outside.

5. Installation and use of glass wool

Glass wool can be installed in attics, floors, edge joists and walls. If it is glass wool roll felt, board or strip, you can directly cut the glass wool to the appropriate size, and then nail in the appropriate position. The glass wool tube shell is directly covered on the pipe and fixed with steel wire or special tape. In addition, glass wool can also be constructed in the form of spraying.

When installed correctly, glass wool can form a barrier that slows the passage of moisture and reduces the likelihood of fiber particles entering the home. But there are many owners do it themselves, resulting in the installation of glass wool is failing. Therefore, it is still necessary to find professional thermal insulation construction personnel to install glass wool.

6. Energy saving effect of glass wool

Glass wool application in steel structure can reduce heating energy consumption by more than 20%, cooling energy consumption can be reduced by more than 15%, and carbon emissions can be reduced by more than 20%. Applied in residential buildings, the total energy saving rate can reach about 55%. Applied in the HVAC system can save energy consumption of about 20%-50%.

Although glass wool is a traditional thermal insulation material, its thermal insulation performance is weaker than the new thermal insulation material, in addition to its low price, high cost performance is the designer's preferred thermal insulation material.

This paper briefly explains the glass wool from the production materials, working principle, advantages and disadvantages, installation and use, energy saving effect. I hope I can help you.