Characteristics of polyurethane exterior wall insulation board and matters needing attention in using insulation board

Building a house in the north will protect the house with insulation board. Because of the cold weather in the north, insulation board can increase indoor temperature in winter, so you will choose it. There are many kinds of insulation boards in the building materials market, and polyurethane exterior wall insulation board is just one of them. So do you know its characteristics? Let's take a look at the characteristics and precautions of polyurethane exterior wall insulation board with everyone!

Characteristics of polyurethane exterior wall insulation board;

1, good thermal insulation effect: the foaming mode of this material is completely independent closed-cell foaming, and the thermal conductivity is only 0.032w/m.k, which not only has good thermal insulation effect, but also has more outstanding advantages in cold preservation.

2. Anti-condensation: This material is a closed-cell structure, which is insulated by the gas in the closed-cell instead of polyethylene. It has excellent water vapor permeability resistance. The built-in vapor barrier is both an insulating layer and a vapor barrier, and no additional vapor barrier is needed. High moisture resistance coefficient. Can effectively avoid condensation.

3. Good fireproof performance: polyethylene insulation materials are flame retardant (oxygen index ≥32) insulation materials according to national testing standards. Moreover, this product has less smoke toxicity in existing foam insulation materials and similar domestic products.

4. Weather resistance: The material has high crosslinking degree and good stability. Artificial ultraviolet radiation for 300 hours, the surface layer remains unchanged, and the service life is long.

5. Corrosion resistance: This material can resist a variety of chemical substances, basically does not deform or crack after soaking, and can be widely used for thermal insulation of chemical pipelines and storage tanks.

6. Low temperature resistance: Under strong low temperature, the structure of this material will not be damaged, deformed or cracked.

7. Non-toxic: This material does not contain any toxic substances. During pyrolysis, co2 and h2o are produced.

8. Other advantages: beautiful appearance and a variety of colors to choose from; Easy to process and compound with other materials; Soft and smooth, feel good; As light as cotton.

Matters needing attention in the use of polyurethane external wall insulation board:

1. Pouring polyurethane on site for thermal insulation. After the wall of a building is dried, polyurethane can be directly sprayed on its surface. Generally, the spraying thickness is about 4 cm, so a high-pressure sprayer should be used to make the surface as flat as possible. After spraying, scrape polymer cement on the foam and then decorate it.

2. Prefabricated heat insulation sandwich panel. Generally, the polyurethane sandwich panel processed by continuous production line is made of colored steel plate or aluminum plate on the outer surface and aluminum foil on the back. During installation, the keel is made on the external wall first, and then the plate is fixed on the keel, or the double-sided color steel plate can be used as the wall material, which is beautiful and has good thermal insulation effect.

There are many kinds of external wall insulation boards, and we need to know the material of insulation boards when choosing them. The above is the characteristics and precautions of polyurethane external wall insulation board introduced by Bian Xiao today, which ends here.