Rubber insulation cotton is a kind of insulation material commonly used in building, which is widely used in building exterior walls, roofs, floors and pipes. At present, the common fire protection grade of rubber and plastic insulation cotton on the market is mainly divided into B1 and B2, so which of these two fire protection grades of rubber and plastic insulation cotton is better?

First of all, B1 grade rubber insulation cotton than B2 grade oxygen index content is higher, with higher flame retardant performance. That is, when it is burned by an open flame, it is not easy to spontaneously ignite, the flame spreads slowly, and it will extinguish itself. This grade of rubber insulation cotton is suitable for high-rise buildings, commercial complexes, hospitals and other places with higher requirements for fire protection levels, which can improve the safety and reliability of buildings.

In contrast, B2 grade rubber insulation cotton has a low fire rating, can not extinguish the flame by itself, and the fire is easy to spread when it is burned by open fire. Although it can also meet the fire protection requirements of some places, it can not meet the needs of high-rise buildings, commercial complexes, hospitals and other places with higher requirements for fire protection levels. Therefore, in places with high safety and reliability requirements, B1 grade rubber insulation cotton should be selected as far as possible.

Secondly, B1 grade rubber insulation cotton adopts better foaming technology, and the foam holes of the rubber and plastic products produced are uniform and fine, and have a high closed-cell ratio. The B2-grade rubber insulation foam has a large hole and a low closed hole ratio, although it has a certain thermal insulation performance, but under the same thickness, its thermal insulation effect is slightly worse than that of B1.

Although B1 grade rubber insulation cotton is better in fire prevention, thermal insulation and other aspects, its price is usually higher. The price of B2 grade rubber insulation cotton is relatively low, which is also its advantage.

The performance of B1 rubber insulation cotton is basically the same as that of B2 rubber insulation cotton, but B1 rubber insulation cotton is safer and more reliable, and is suitable for places with higher requirements for fire protection, such as high-rise buildings, commercial complexes, hospitals and so on. B2 grade rubber insulation cotton also has price advantages. Therefore, in the selection, the actual needs and budget should be considered comprehensively, the selection of rubber and plastic insulation cotton that meets the needs of the fire level, and the correct installation and use in accordance with the standard. For more information about rubber and plastic insulation materials, please pay attention to Utsen rubber and plastic manufacturer.