Often, many are faced with the problem of urgent local sealing, which is necessary to protect against moisture and dust. There are many different types of sealing materials, one of which is butyl sealant. Easy accessibility and low cost, unlike other products, have made this species widespread.
What is butyl sealant
Sealants made on the basis of bitumen compounds are widely used. Butyl sealants consist of hydrocarbons and their sulfur, oxygen-containing derivatives, as well as metal and nitrogen-containing compounds. The initial development of this sealant was carried out in the mid 60-ies of the last century. In the future, the manufacturing process was improved, and machines for applying it to any surface and storage capacity were also improved.
Butyl sealant will find the greatest distribution later in production of double-glazed windows. A special type of special equipment will be developed for it, which will be called butyl extruders. Also sometimes used as a sealant for headlights. Great demand pushed manufacturers to increase the types and quantity of butyl in the sealant market.
Production
The production of butyl sealants has long been no secret and quite simple in relation to the production of other types, for example, polysulfide or silicone. The composition of butyl includes such components as butyl rubbers and plasticizers, as well as special technological additives, namely the latter are the components that manufacturers make in certain proportions.
The plasticizer in the composition of butyl sealant plays one of the main roles, it is made from industrial oils and paraffin resins. The most important role of such a component is adhesion, that is, the ability of the material to connect together for a long time. Over time, plasticizers lose their properties and possible depressurization in the manufactured product. Sometimes, when drivers use butyl sealant for headlight glasses, it peels off from the parts to be glued.
The type of finished butyl depends on its consumption. If butyl sealant is used for windows, it is mainly produced in the form of a can of cylindrical shape weighing 7 kg, sometimes 2.5 kg. This cylinder is then immersed in a butyl extruder, where it is applied to an aluminum frame under the influence of high temperature and air pressure. After the frame is glued to the glass blanks for the production of glass.
Main characteristics
Butyl is a non-hardening sealant, one-component, characterized by high adhesive properties with respect to glass, aluminum and sheet steel. The main indicator is the adhesion level of 93-95% for glass, for metal it is slightly lower. The main and main role for butyl is the ability to maintain tightness in the glass packet and for other materials, to prevent the penetration of moisture and dust into the product where butyl is used.
Butyl sealant is made mainly in black, it depends on the main components. Apply it using special machines - extruders. In the extruders, butyl is heated to a temperature of 110 to 150 ° C, while it softens and is easily applied under pressure to the surface to be glued. There are special GOSTs for the use of this sealant.
Application
The use of the material has no defined boundaries. Butyl sealant for windows - the main application, it is applied to the edge of the frame and serves as the main sealing layer. The butyl layer does not allow moisture to pass through and prevents gas from escaping from the chamber.
Sometimes it is used for gluing destroyed surfaces. Butyl sealant for headlights is often used by mechanics and simple drivers, this type is easy to use and inexpensive. The most important thing to remember when using it is the direct effect of ultraviolet radiation, moisture and high temperatures. These factors adversely affect the properties of butyl; depressurization of glued surfaces is possible.
So, the considered hermetic is extremely important to have at hand, since it has universal properties. Putting it into practice is quite simple.