摘要:
Zirconia-based particles, sols containing the zirconia-based particles, methods of making the sols and the zirconia-based particles, composites containing the zirconia-based particles in an organic matrix, and sintered bodies prepared from the zirconia-based particles are described. The zirconia-based particles are crystalline, have a primary particles size no greater than 100 nanometers, and are doped with a lanthanide element or with both a lanthanide element and yttrium.
摘要:
Pressure sensitive adhesives having flame retarding properties include a (meth)acrylate-based block copolymer, and at least 10% by weight of a halogen-free flame retarding agent. The adhesives may contain additional optional additives such as tackifying resins, plasticizers, and the like. The adhesives are prepared by blending the (meth)acrylate-based block copolymer, and the halogen-free flame retarding agent either in solvent or by a solventless process.
摘要:
A process comprises (a) combining (1) at least one metal cation source, (2) at least one phosphate anion source, (3) at least one organic base comprising at least one organic moiety comprising at least about five carbon atoms, and (4) at least one organosilane comprising at least one organic moiety comprising at least about six carbon atoms; and (b) allowing the metal cation source and the phosphate anion source to react in the presence of the organic base and the organosilane (for example, to form surface-modified metal phosphate nanoparticles).
摘要:
Aerogel composites and bonded aerogel composites are described. The aerogel composites include monolithic aerogel material located in cavities between a base layer and a structured layer that is bonded to the base layer. Additional layers may be bonded to the base layer and/or the structured layer to form bonded aerogel composites.
摘要:
A marker composition and a package using same. The marker composition can include retroreflective particles and a dispersion medium, the blending ratio of the retroreflective particles being from 50 to 90 mass % on the basis of the total marker composition.
摘要:
A nanocomposite is provided including silica nanoparticles and a dispersant dispersed in a curable resin or a curing agent, where the nanocomposite contains less than 2% by weight solvent. The silica nanoparticles include nonspherical silica nanoparticles and/or spherical pyrogenic silica nanoparticles. A composite is also provided including from about 4 to 70 weight percent of silica nanoparticles, and a dispersant, dispersed in a cured resin, and a filler embedded in the cured resin. Optionally, the composite further contains a curing agent. Further, a method of preparing a nanoparticle-containing curable resin system is provided including mixing from 10 to 70 weight percent of aggregated silica nanoparticles with a curable resin and a dispersant to form a mixture. The mixture contains less than 2% by weight solvent. The method also includes milling the mixture in an immersion mill containing milling media to form a milled resin system including silica nanoparticles dispersed in the curable resin.
摘要:
A process comprises (a) combining (1) at least one metal cation source, (2) at least one phosphate anion source, (3) at least one organic base comprising at least one organic moiety comprising at least about five carbon atoms, and (4) at least one organosilane comprising at least one organic moiety comprising at least about six carbon atoms; and (b) allowing the metal cation source and the phosphate anion source to react in the presence of the organic base and the organosilane (for example, to form surface-modified metal phosphate nanoparticles).