Glues and sealants, which are presented on the modern market, are extremely diverse and are characterized by a wide scope.
Glue is a substance that is used to connect different materials due to the adhesion process between the adhesive film and various surfaces. It is a mixture or solution on a natural or synthetic basis.
The chemical structure of adhesives also varies. In addition, they are classified by their consistency into liquid or powder.
According to the bonding method, they are of the following types: PVA, contact, hot melt adhesives and those that act at the molecular level.
Significant sealants are becoming very common. They are used in the assembly of components, various devices, machines, ventilation systems, etc. “Moment” adhesive sealant, which is a waterproof type, is popular. 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 adhesive sealant is made on the basis of polymers. In most cases, it contains 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. Its 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, can be used to seal small cracks both outdoors and indoors. They are characterized by good adhesion with concrete, plaster, as well as wood and brick, capable of forming a film in 15 minutes and preserve their properties at a temperature of -25 - +80 ° . In addition, this adhesive sealant is highly resistant to UV rays and light, applied directly from a tube or with a special gun.
The silicone type of these adhesives is used as insulators, which help to install the window frame, doorway and various metal structures, reliably protecting from penetration of extraneous odors and water. It is worth noting that silicone adhesive sealant is characterized by good adhesion to glass, wooden, enameled and ceramic surfaces. It is also characterized by high resistance to high temperatures and various weather conditions.
Such adhesives are available in a variety of colors or colorless (transparent). When applying them, it should be remembered that the working surface should be clean, dry and fat-free, and complete solidification occurs only during the day.
Polyurethane adhesive sealants are a compacted and sticky mass that can maintain 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, and can be varnished or painted. Before applying them, it is necessary to carry out standard surface preparation (cleaning and degreasing).