[article]
| Titre : |
Liquid polysulfide polymers for chemical- and solvent-resistant sealants : Liquid polysulfide polymers, the oldest of the specialty elastomers, offer electrical properties, low temperature flexibility, and more |
| Type de document : |
texte imprimé |
| Auteurs : |
Volker burkhardt, Auteur |
| Année de publication : |
2018 |
| Article en page(s) : |
p. 19-23 |
| Langues : |
Américain (ame) |
| Catégories : |
Construction -- Matériaux
Mastics
Poids moléculaires
Polymères -- Applications industrielles
Polymères -- Propriétés physiques
Polymères -- Synthèse
Polymérisation en émulsion
Polysulfures
Résistance chimique
Réticulants
|
| Index. décimale : |
668.3 Adhésifs et produits semblables |
| Résumé : |
Liquid polysulfide polymers are the oldest specialty elastomer. They are characterized by solvent and chemical resistance, great electrical properties, low-temperature flexibility, oxygen and ozone resistance, high impermeability to many gases and moisture, good adhesion properties, and flex-crack resistance.
These low- to high-viscosity polymers have highly reactive terminal thiol or epoxy groups and are widely used as sealants for insulating glass windows, sealants in construction, sealants for aircraft fuel tanks and fuselages, epoxy modifiers, or intumescent protective coatings.
Liquid polysulfide polymers were re-discovered in 1926 by Joseph C. Patrick and Nathan Mnookin when they were trying to react a,v-alkyl halides with inorganic polysulfides (e.g., Na2Sx, x = 4-6). The inventors created high-molecular-weight rubbers with outstanding chemical resistance against solvents, gasoline, ultraviolet (UV) light and ozone. |
| Note de contenu : |
- Synthesis and chemical structure
- Typical properties
- Curing liquid polysulfide polymers
- Properties of cured liquid polysulfide polymers
- Applications
- Environmental and health issues
- Table 1 : Molecular weight, SH-content and degree of branching
- Table 2 : Physical properties
- Table 3 : Content of peroxide-based curatives to cure polysulfide polymers
- Table 4 : Application areas of liquid polysulfide polymers |
| En ligne : |
https://www.adhesivesmag.com/articles/96384-liquid-polysulfide-polymers-for-chem [...] |
| Format de la ressource électronique : |
Texte |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32003 |
in ADHESIVES & SEALANTS INDUSTRY (ASI) > Vol. 25, N° 8 (08/2018) . - p. 19-23
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