Difference between yellow glass wool, formaldehyde-free white glass wool and brown environment-friendly glass wool

In addition to the common yellow glass wool, there are also pink glass wool, brown glass wool and white glass wool? What's the difference between them?

Ordinary glass wool is yellow, and the main reason for the different color of glass wool is the different composition of binder.

Ordinary glass wool is mainly made of glass fiber added with phenolic resin curing agent through rolling, heating curing, shearing, packaging and other processes. Because the phenolic resin curing agent will appear yellow after being heated and cured, ordinary glass wool products are yellow. The glass wool roll felt or low density glass wool board will appear light yellow due to the low content of curing agent. With the increase of the density of glass wool, the content of curing agent will also increase, and the color will become darker and darker.

The pink glass wool roll felt is a kind of adhesive with a certain proportion of pink paste added to the glass wool fiber with a diameter of less than 7 microns. It is mainly used for the thermal insulation and sound absorption parts of various building walls, equipment and pipes through rolling, curing, composite moisture-proof veneer, cutting, packaging and other processes.

The difference between pink glass wool and yellow glass wool is that pink glass wool roll felt and yellow glass wool roll felt are glass wool fibers with a diameter of less than 7 microns, which are added with an appropriate amount of binder in a certain proportion. After rolling, curing, composite moisture-proof veneer, cutting, packaging and other processes.

The difference is that pink glass wool is added with pink paste in the curing agent. In addition, there is no difference between the two in various physical and chemical properties and application range.

White glass wool: glass wool without curing agent is also white. The main raw material of glass wool is glass. The glass is basically colorless and transparent when it is made into fiber. However, if a large number of fibers are integrated into cotton wool, it will appear white.

Another kind of white glass wool that is often exported is white formaldehyde-free glass wool, which generally refers to the glass wool with the additive of acrylic resin or environmental protection glass wool.

Brown glass wool is a curing agent added with starch-based resin adhesive, and its color is dark brown.

In conclusion, the color of glass wool depends on the color of its curing agent or added color paste after drying.

The common yellow glass wool uses phenolic resin binder, the white cotton without formaldehyde uses acrylic resin binder, and the brown environment-friendly cotton uses starch-based resin binder. The pink glass wool is added with binder containing color paste.

Brown glass wool and white glass wool are defined as high-end glass wool because the binder is formaldehyde free and environmentally friendly. The disadvantage is that the price is four times higher than that of ordinary yellow glass wool.

Yellow glass wool is the most exported and sold glass wool in the market because of its price advantage. If high-quality yellow glass wool needs to be purchased, the evaporation of binder is an important link in the production process. During the production process, the glass wool needs to go through a constant temperature curing furnace to fully evaporate the binder sprayed in the glass wool. The length of the thermostatic curing furnace needs to be more than 20 meters, and the temperature inside needs to reach 200 ℃, so that the binder can be fully volatilized.

SHENZHOU can meet the needs of any kind of glass wool.

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