Tractable silica sols and nanocomposites therefrom
AssigneeAPS Laboratory
InventorHong-Son Ryang
Life of this patent
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Abstract
Disclosed are silica sols made by combining at least one hydrolysable silane, at least one organofunctional silane, at least one boron oxide compound, and a liquid, or silica sols made by combining at least one hydrolysable silane, at least one organofunctional silane, at least one acid catalyst, and a liquid to provide an intermediate sol and combining at least one base catalyst with the intermediate sol. Also disclosed are nanocomposites containing the silica sols and at least one of metal nanoparticle, metal-chalcogenide nanoparticle, metal oxide nanoparticle, and metal phosphate nanoparticle. Further disclosed are composites containing a polymer material and at least one of the silica sol and the nanocomposite.
Claims20
A method of making a silica sol comprising combining:
- from about 10% to about 80% by weight of at least one hydrolysable silane,
- from about 10% to about 60% by weight of at least one organofunctional silane,
- from about 0.5% to about 80% by weight of at least one boron oxide compound and an optional catalyst, or effective amounts of at least two catalysts to provide the silica sol and an optional boron oxide compound, and
- a liquid.
A method of making a nanocomposite comprising combining:
- from about 10% to about 80% by weight of at least one hydrolysable silane,
- from about 10% to about 60% by weight of at least one organofunctional silane,
- from about 0.5% to about 80% by weight of at least one boron oxide compound and an optional catalyst, or effective amounts of at least two catalysts to provide a host silica sol and an optional boron oxide compound,
- a liquid;
- and
- from about 0.001% to about 80% by weight of at least one of guest metal nanoparticle, guest metal-chalcogenide nanoparticle, metal phosphate nanoparticle, guest metal oxide nanoparticle, and precursors of these guest nanoparticles.
A polymer composite comprising:
- from about 1% to about 99.99% by weight of a polymer material;
- from about 0.01% to about 99% by weight of a silica sol and/or a nanocomposite comprising at least one of metal nanoparticle, metal-chalcogenide nanoparticle, metal phosphate nanoparticle and metal oxide nanoparticle substantially uniformly dispersed within the polymer material;
- wherein the silica sol is at least one of a silica sol made by combining from about 10% to about 80% by weight of at least one hydrolysable silane;
- from about 10% to about 60% by weight of at least one organofunctional silane;
- from about 0.5% to about 80% by weight of at least one boron oxide compound;
- an optional catalyst;
- and a liquid;
- or a silica sol made by combining from about 10% to about 80% by weight of at least one hydrolysable silane, from about 10% to about 60% by weight of at least one organofunctional silane, at least one acid catalyst, and a liquid to provide an intermediate sol and combining at least one base catalyst with the intermediate sol to provide the silica sol;
- and
- wherein the nanocomposite is at least one of a nanocomposite comprising from about 0.001% to about 80% by weight of at least one of guest metal nanoparticle, guest metal-chalcogenide nanoparticle, metal phosphate nanoparticle and metal oxide nanoparticle, and from about 20% to about 99.999% by weight of the host silica sol;
- a nanocomposite made by chalcogenizing a host-guest silica sol comprising from about 0.001% to about 80% by weight of at least one of guest metal-chalcogenide precursors, guest metal nanoparticles, and guest metal oxide nanoparticles and from about 20% to about 99.999% by weight of the host silica sol;
- a nanocomposite made by phosphatizing a host-guest silica sol comprising from about 0.001% to about 80% by weight of at least one of guest metal phosphate precursors, guest metal nanoparticles, and guest metal oxide nanoparticles and from about 20% to about 99.999% by weight of the host silica sol;
- or a nanocomposite made by oxidizing a host-guest silica sol comprising from about 0.001% to about 80% by weight of at least one of guest metal oxide precursors and guest metal nanoparticle and from about 20% to about 99.999% by weight of the host silica sol.
Dependencies are inferred from the claim text.