Welcome to Dalian Cheung Wang Seal Insulation Materials Co., Ltd.



Current location: Home > News > Industry news >


Polyurethane insulation materials in the building caulk sealing the application

Author:Release time:2019-05-25 14:04


There are gaps in the Windows, doors and perforations of buildings, which are the factors of energy dissipation. In the past, the practice is to fill broken cement or brick and then cement, because the filling is not solid and caused by the internal cavity becomes the hidden danger of building energy conservation. The rigid foam of single component of polyurethane is loaded into the pressure vessel barrel. When in use, press the valve to make the foam body flow out. Because the foam just out of the barrel is soft, it can be deformed at will. In this way, the foam body can be squeezed into the gap around the entrance and window through a thin tube, so that the foam body becomes hard after curing and can be slightly trimmed. The through hole of the building, such as air conditioning hole, cable hole can be filled with it.

Polyurethane is poured on site

The current construction method involves pouring hard polyurethane foam into a cavity formed between two walls. After the polyurethane foams, it forms a whole with the inner and outer walls. When the polyurethane foams, it penetrates into the brick joints of the wall. Here the strength of the foam itself is required to be higher than ordinary foam, and the wall should be fully dry to avoid poor adhesion. Another is to pay attention to the pressure generated during foaming to prevent the deformation of the wall. In practice, the solution is not to pour too much each time, so as to reduce the pressure generated in each foaming process. After the wall solidifies to the highest structural strength, foaming can be carried out. Another method of on-site pouring polyurethane for external wall insulation is pouring on the external walls of buildings. The concrete method is as follows: firstly, the structural support is embedded on the wall in advance, and then the template is fixed on the support. Polyurethane is poured into the cavity between the wall and the template reserved by the support, and the next board is poured in this order. These structural supports can be the supporting points for external protection and decoration in the next step.

On-site pouring of polyurethane insulation

After the building wall drying, can be directly on its surface spray polyurethane, general spray thickness of about 4CM, the requirement of high-pressure spray coating machine to make the surface as smooth as possible. After the completion of spraying foam scraping coated polymer cement, and then external decoration, or in the polymer cement mixed with color paste and quartz sand, can increase the protective layer strength, but also can make the surface beautiful. The nanjing Yangtze river delta with the practice of waterproof insulation materials co., LTD. Is more unique, they first wood nailed on the wall, between each wood coating, and then cut the wood part of the higher foam, finally, the decoration and protection of the plank on the nail in the wood, the characteristics of this kind of practice is the overall flat, convenient decoration processing, suitable for height is not too high profile building insulation.

Polyurethane in the application of building energy saving, in addition to the above products and applications, there are many other aspects, such as many household appliances, such as refrigerators, ovens, water heaters insulation layer mostly used polyurethane insulation, in addition, solar water heaters can not be separated from polyurethane insulation to store hot water. Building sealant series products in polyurethane is one of them. Thus it can be seen that polyurethane plays an important role in the field of building energy conservation.

Previous:Throughout Chinese history insulation materials industry in decades

Next:Insulation materials is energy-saving and safe combustion murderer could have both?

Hot news: