Adhesive Sealant: its types and applications

Adhesives and sealants, which are presented in the modern market, are extremely diverse and are characterized by a wide range of applications.

Adhesive is a substance that is used to connect different materials through the adhesion process between the adhesive film and various surfaces. It is a mixture or solution on a natural or synthetic basis.

According to the chemical structure, glues are also different. In addition, they are classified by their consistency into liquid or powdery.

By the method of gluing, they are of the following types: PVA, contact, hot melt adhesives and those that operate at the molecular level.

Adhesive sealants are becoming very popular. They are used to assemble assemblies, various devices, machines, ventilation systems, etc. Popular is the glue-sealant "Moment", relating to water resistant types. It is used for gluing a variety of surfaces - wood, leather, rubber, glass, ceramics, etc. (Except dishes in which it is planned to serve food).

It should be noted that the sealant is made on the basis of polymers. In most cases, it includes polysulfide as well as silicon-organic rubbers. The main range of applications is the filling of various cracks and cracks, as well as the sealing of doors and windows.

The chemical composition of the adhesive sealant is acrylic, silicone and polyurethane. Acrylic type is used to fill joints and not too large cracks between stone or concrete surfaces.

It should be noted that acrylic-based adhesives do not contain solvents, they can be used to seal small cracks both on the outside and inside the premises. They are characterized by good adhesion with concrete, plaster, as well as wood and brick, able to form a film for 15 minutes and maintain its properties at a temperature of -25 - +80 ° C. In addition, such a glue-sealant has a high resistance to UV rays and light, applied directly from the tube or with a special gun.

The silicone type of these adhesives is used as insulators, which help to install a window frame, a doorway and various metal structures, reliably protecting against the penetration of foreign smells and water. It should be noted that the silicone sealant is characterized by good adhesion to glass, wood, enamel and ceramic surfaces. It also has a high resistance to high temperatures and various weather conditions. These glues are available in a variety of colors or colorless (transparent). When applying them, remember that the working surface must be clean, dry and free from grease, and full hardening occurs only within a day.

Polyurethane sealants are a compacted and adhesive mass that can retain a good elasticity for a long time. They are used to seal any materials. It should also be noted that adhesives on a polyurethane base quickly glue two surfaces, become hard when in contact with water, can be coated with varnish or paint. Before they are applied, standard surface preparation (cleaning and degreasing) should be carried out.