Difference between revisions of "Alkoxysilane"
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== Description == | == Description == | ||
| − | A general name for chemically reactive [ | + | A general name for chemically reactive [[silane|silane]] compounds. Alkoxysilanes were introduced in the 1980s as sealers and consolidants for [[concrete|concrete]] and [[sandstone|sandstones]]. The silane solution penetrates well into the pores of the stone and deposits a nonlinear glasslike matrix of [[silica|silicon dioxide]]. Examples of alkoxysilanes are polydimethylloxysiloxane (often used in sol gels), methyltrimethoxysilane, alkytrialkoxysilane, and tetraethoxysilane. They are used alone or in combination with [[acrylic%20resin|acrylic resins]]. |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
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polyalkoxysilane; polysillicate; ConservareOH [Prosoco] | polyalkoxysilane; polysillicate; ConservareOH [Prosoco] | ||
| − | == | + | == Risks == |
| − | + | Evolves methane during cure. | |
| − | == | + | == Physical and Chemical Properties == |
| − | + | Hydrolysis is catalyzed by either an acid (hydrochloric acid, acetic acid, or nitric acid) or base (ammonia, ammonium carbonate, triethanolamine, calcium hydroxide, magnesium oxide, etc.) | |
| − | |||
| − | |||
| − | + | ==Resources and Citations== | |
| − | + | * Gerald Larson, 'An Introduction to Oganosilicon Chemistry', Petrarch Systems, Bristol PA. | |
| − | * | + | * Marie Svoboda, Conservation Survey Index, unpublished, 1997 |
| − | * | + | * Thomas C. Jester (ed.), ''Twentieth-Century Building Materials'', McGraw-Hill Companies, Washington DC, 1995 |
| − | * | + | * George Wheeler paper at www.b72.com/objects/stone/consolidants.html (accessed Aug. 1998) |
[[Category:Materials database]] | [[Category:Materials database]] | ||
Latest revision as of 08:41, 26 April 2022
Description
A general name for chemically reactive Silane compounds. Alkoxysilanes were introduced in the 1980s as sealers and consolidants for Concrete and sandstones. The silane solution penetrates well into the pores of the stone and deposits a nonlinear glasslike matrix of silicon dioxide. Examples of alkoxysilanes are polydimethylloxysiloxane (often used in sol gels), methyltrimethoxysilane, alkytrialkoxysilane, and tetraethoxysilane. They are used alone or in combination with acrylic resins.
Synonyms and Related Terms
polyalkoxysilane; polysillicate; ConservareOH [Prosoco]
Risks
Evolves methane during cure.
Physical and Chemical Properties
Hydrolysis is catalyzed by either an acid (hydrochloric acid, acetic acid, or nitric acid) or base (ammonia, ammonium carbonate, triethanolamine, calcium hydroxide, magnesium oxide, etc.)
Resources and Citations
- Gerald Larson, 'An Introduction to Oganosilicon Chemistry', Petrarch Systems, Bristol PA.
- Marie Svoboda, Conservation Survey Index, unpublished, 1997
- Thomas C. Jester (ed.), Twentieth-Century Building Materials, McGraw-Hill Companies, Washington DC, 1995
- George Wheeler paper at www.b72.com/objects/stone/consolidants.html (accessed Aug. 1998)