Difference between revisions of "Sealant"
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== Description == | == Description == | ||
| − | Any material used to seal joints and openings. Natural waterproofing materials, such as [http://cameo.mfa.org/materials/fullrecord.asp?name=wax waxes] and [http://cameo.mfa.org/materials/fullrecord.asp?name=tar tars] have been used since ancient times. Oil-based caulk, or [http://cameo.mfa.org/materials/fullrecord.asp?name=putty putty], was composed primarily of calcium carbonate and drying oils. The first synthetic elastomeric sealant, developed in the 1950s, was composed of [http://cameo.mfa.org/materials/fullrecord.asp?name=polysulfide polysulfide] ([http://cameo.mfa.org/materials/fullrecord.asp?name=Thiokol | + | Any material used to seal joints and openings. Natural waterproofing materials, such as [http://cameo.mfa.org/materials/fullrecord.asp?name=wax waxes] and [http://cameo.mfa.org/materials/fullrecord.asp?name=tar tars] have been used since ancient times. Oil-based caulk, or [http://cameo.mfa.org/materials/fullrecord.asp?name=putty putty], was composed primarily of calcium carbonate and drying oils. The first synthetic elastomeric sealant, developed in the 1950s, was composed of [http://cameo.mfa.org/materials/fullrecord.asp?name=polysulfide polysulfide] ([http://cameo.mfa.org/materials/fullrecord.asp?name=Thiokol%C2%AE Thiokol®]). [http://cameo.mfa.org/materials/fullrecord.asp?name=Butyl%20rubber Butyl rubber] sealants, also manufactured in the 50s, contained [http://cameo.mfa.org/materials/fullrecord.asp?name=talc talc], [http://cameo.mfa.org/materials/fullrecord.asp?name=calcium%20carbonate calcium carbonate], [http://cameo.mfa.org/materials/fullrecord.asp?name=polybutylene polybutylene], [http://cameo.mfa.org/materials/fullrecord.asp?name=mineral%20spirits mineral spirits], and adhesion promoters. The first acrylic sealant, developed in 1958, was a solvent curing product that included [http://cameo.mfa.org/materials/fullrecord.asp?name=acrylic%20resin acrylic resin], calcium carbonate, [http://cameo.mfa.org/materials/fullrecord.asp?name=silica silica], solvent, and plasticizer. Silicone sealants, introduced in the 1960s, contained [http://cameo.mfa.org/materials/fullrecord.asp?name=silicone%20resin silicone resins], [http://cameo.mfa.org/materials/fullrecord.asp?name=fumed%20silica fumed silica], calcium carbonate, ground [http://cameo.mfa.org/materials/fullrecord.asp?name=quartz quartz], [http://cameo.mfa.org/materials/fullrecord.asp?name=carbon%20black carbon black], talc, and plasticizers. [http://cameo.mfa.org/materials/fullrecord.asp?name=Polyurethane Polyurethane] elastomers provide good abrasion resistance. Latex caulks, available in the late 1960s, eliminated the use of organic solvents. They typically contain an aqueous polymer emulsion with calcium carbonate, plasticizers, and other additives. |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
| − | + | matériau de scellement (Fr.); caulk; caulking; glazing; mastic; putty; Thiokol | |
== Hazards and Safety == | == Hazards and Safety == | ||
| Line 21: | Line 21: | ||
== Authority == | == Authority == | ||
| − | * | + | * Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993 |
* ''Dictionary of Building Preservation'', Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996 | * ''Dictionary of Building Preservation'', Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996 | ||
| − | * | + | * Thomas C. Jester (ed.), ''Twentieth-Century Building Materials'', McGraw-Hill Companies, Washington DC, 1995 |
| − | * | + | * Random House, ''Webster's Encyclopedic Unabridged Dictionary of the English Language'', Grammercy Book, New York, 1997 |
| − | * | + | * Theodore J. Reinhart, 'Glossary of Terms', ''Engineered Plastics'', ASM International, 1988 |
[[Category:Materials database]] | [[Category:Materials database]] | ||
Revision as of 07:52, 24 July 2013
Description
Any material used to seal joints and openings. Natural waterproofing materials, such as waxes and tars have been used since ancient times. Oil-based caulk, or putty, was composed primarily of calcium carbonate and drying oils. The first synthetic elastomeric sealant, developed in the 1950s, was composed of polysulfide (Thiokol®). Butyl rubber sealants, also manufactured in the 50s, contained talc, calcium carbonate, polybutylene, mineral spirits, and adhesion promoters. The first acrylic sealant, developed in 1958, was a solvent curing product that included acrylic resin, calcium carbonate, silica, solvent, and plasticizer. Silicone sealants, introduced in the 1960s, contained silicone resins, fumed silica, calcium carbonate, ground quartz, carbon black, talc, and plasticizers. Polyurethane elastomers provide good abrasion resistance. Latex caulks, available in the late 1960s, eliminated the use of organic solvents. They typically contain an aqueous polymer emulsion with calcium carbonate, plasticizers, and other additives.
Synonyms and Related Terms
matériau de scellement (Fr.); caulk; caulking; glazing; mastic; putty; Thiokol
Hazards and Safety
Oil-caulks may contain lead and asbestos.
Early polysulfide sealants may contain PCBs.
Low viscosity silicone sealants can cause staining in adjacent materials.
Additional Information
Michael Scheffler, James Connolly, "Building Sealants", in Twentieth-Century Building Materials, T. Jester (ed.), McGraw-Hill: New York, 1995.
Authority
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- Dictionary of Building Preservation, Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996
- Thomas C. Jester (ed.), Twentieth-Century Building Materials, McGraw-Hill Companies, Washington DC, 1995
- Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
- Theodore J. Reinhart, 'Glossary of Terms', Engineered Plastics, ASM International, 1988