Sealing - ensuring impermeability to gases and liquids of surfaces and joints of parts. Sealing of surfaces is ensured by coating with materials impervious to gases and liquids. The joints are sealed by the use of additional parts made of elastic material, or by filling the gaps with sealing material.
Content
- 1 Origin of the term
- 2 Sealing materials
- 3 Types of sealing
- 4 Sealing and repair of interpanel seams of industrial and residential buildings
- 5 See also
- 6 Literature
- 7 References
The origin of the term
It goes back to the name of the ancient syncretic deity Hermes Trismegistus (from other Greek: Ἑρμῆς ο Τρισμέγιστος ), Hermes the Greatest. It should not be confused with Hermes of Olympia, previously it was widely believed that Hermes Trismegistus was a real ancient prophet and sage, even in TSB he was called "the legendary Egyptian sage who is credited with inventing a method for blocking blood vessels." You should also distinguish between the concepts of hermeticity and tightness.
Sealing materials
For sealing, sealing materials are used, which include:
- rolled and sheet materials;
- penetrating mineral building materials;
- polymer based liquid application materials.
In addition to polymers, sealing materials contain various fillers and hardeners - vulcanizing. Sealing materials are used in the form of pastes, putties, mastics and self-adhesive tapes, sometimes in the form of a solution in organic solvents, wax. The sealing material is formed as a result of hardening on the joint itself or at the contact point of the surfaces to be sealed. Sealing materials must be strong and flexible, resistant to aggressive environments and temperature extremes. Sealing materials to protect parts and units of electrical appliances must be with electrical insulation properties.
Sealing Types
Sealing is an important condition for the operability of many devices, apparatus and devices, as well as the condition for normal and comfortable existence and functioning in buildings and premises. Some production processes, the conditions for conducting many scientific and research work require increased impermeability of the premises. Sealing determines the reliability and durability of instruments and devices. Some types of sealing:
- sealing threaded joints;
- sealing flange joints;
- sealing of double-glazed windows;
- sealing walls of buildings.
Sealing and repair of interpanel seams of industrial and residential buildings
Sealing and repair of interpanel seams, industrial and residential buildings, a very popular area of repair and construction work. Heat losses due to poor sealing of the walls cannot be taken into account, but there is no doubt that they are huge. Projects and experiments of Scandinavian and German scientists , builders and environmentalists have proven the ability to maintain a comfortable temperature in an airtight building in the winter without heating at all (see Passive House ). The reasons for poor sealing of wall joints are design and implementation errors, aging of sealing materials.
See also
- Sealant
Literature
Great Soviet Encyclopedia, third edition. - M.: Soviet Encyclopedia, 1970-77 (electronic version - M .: Scientific publishing house "Big Russian Encyclopedia", 2004.)
Links
- Sealing // Great Soviet Encyclopedia : [in 30 vol.] / Ch. ed. A.M. Prokhorov . - 3rd ed. - M .: Soviet Encyclopedia, 1969-1978.