Polyurethane sealant. Description. Application area

One-component polyurethane sealant, as a rule, is used if necessary to fix, glue, seal metal, ceramics, brick, concrete and so on. The mixture is a high-quality compound with a high degree of resistance to corrosion, and when exposed to moisture it becomes even more durable. Often used sealant for a wooden house.

After applying the material to the surface, it can be subjected to various treatments, including painting and varnishing. Polyurethane sealant glues the surfaces quickly enough. In this regard, work with the material should be carried out taking into account the setting time. It should be noted that the use of the material implies compliance with certain safety rules. Do not allow the mixture to enter open areas of the skin. Polyurethane sealant is available in sealed packaging. The material should not be stored at elevated temperature and humidity. On average, the shelf life of a closed package is about nine months. It is desirable to use the material from the opened package immediately, since the polyurethane sealant quickly loses its useful properties.

The material is a homogeneous viscous mass formed on the basis of resins. When interacting with moisture contained in the air, the polymerization of the compound occurs.

Features of the application of the material are determined by its performance characteristics. Among the basic qualities it is necessary to note efficiency in application, absence of shrinkage, processability of application, short term of hardening. Adhesive properties, as well as elasticity, strength, durability, maintainability are of no small importance. Polyurethane sealant can also be used at sufficiently low temperatures.

The operational properties of the material make it possible to apply it universally. Particularly widely polyurethane sealant is used in construction for insulation of seams, double-glazed windows, with waterproofing of pools, installation of roofing coatings. In accordance with the method of use, the material can be produced in two forms.

On some surfaces the material is applied in the form of a liquid mastic. At the same time, a highly elastic, waterproof membrane is formed on the surface, resistant to negative environmental factors: micro-organisms, ultraviolet and other.

A more viscous sealing compound is used to fill joints, joints, and also to seal the joints of these or other materials. Often, the formulations are used to connect materials that have significant differences in physical properties.

The main indicator when choosing a sealant is its hardness. Hardness in this case is the ability to resist penetration into the composition of another material. Thus, a sealant with an index of 15 is used for insulation of roofing joints, inter-panel joints, connecting units of prefabricated structures. The hardness level 25 allows the use of a material for insulation of joints, which for a long period will be influenced by water.