Abstract:
Various methods of treating surface-modified nanoparticles are described. Dual-ion exchange procedures (anion exchange and cation exchange), as well-as subsequent end-capping are described. Both ionically-bonded and covalently-bonded end-capping agents are discussed. The resulting low ion content, particularly low alkali metal and alkaline metal oxide ion content, treated, surface-modified nanoparticles, including such nanoparticles in a resin system, are also disclosed. Effects of low ion content on various properties of the resulting resin system, including blister-resistance, optical clarity, and rheology are included.
Abstract:
Resin systems comprising a crosslinkable resin, a reactive diluent, and a plurality of reactive, surface-modified nanoparticles; and gel coats including such resin systems are described. Articles having such compositions attached to a surface of a substrate, e.g., a fibrous reinforced substrate, are also described.
Abstract:
Toughened curable compositions are described. The curable compositions include a curable resin, surface-modified nanoparticles, and rubber nano-domains. Both core-shell rubber nano-domains, and nano-rubber domains arising from self-assembled block co-polymers are disclosed. Toughened, cured resin compositions, and articles comprising such cured compositions are also discussed.
Abstract:
Resin systems comprising a crosslinkable resin, a reactive diluent, and a plurality of reactive, surface-modified nanoparticles; and gel coats including such resin systems are described. Articles having such compositions attached to a surface of a substrate, e.g., a fibrous reinforced substrate, are also described.
Abstract:
Various methods of treating surface-modified nanoparticles are described. Dual-ion exchange procedures (anion exchange and cation exchange), as well-as subsequent end-capping are described. Both ionically-bonded and covalently-bonded end-capping agents are discussed. The resulting low ion content, particularly low alkali metal and alkaline metal oxide ion content, treated, surface-modified nanoparticles, including such nanoparticles in a resin system, are also disclosed. Effects of low ion content on various properties of the resulting resin system, including blister-resistance, optical clarity, and rheology are included.
Abstract:
End-capped, surface-modified, silica nanoparticles are described. The resulting treated, surface-modified nanoparticles, including such nanoparticles in a resin system, are also disclosed. Effects of such surface treatments on various properties of the resulting resin system, including blister-resistance, optical clarity, and rheology are included.