Abstract:
Methods of compounding nanoparticles with a resin, e.g., a curable resin and one or more surface modifying agents are described. The methods use wet milling technology, including both continuous and batch milling processes, and can be used to functionalize the nanoparticles and disperse the functionalized nanoparticles into the resin system in a single process. Methods of compounding curable resin systems containing reactive diluents are also disclosed.
Abstract:
Methods of making hydrophobic aerogels are described. Disclosed methods include forming a surface-modified metal oxide aerogel precursor from a sol comprising a solvent, a metal oxide precursor, and a hydrophobic surface modifying agent. The resulting modified precursor can be dried to from hydrophobic aerogels. Methods of forming the surface-modified metal oxide aerogel precursor include hydrolyzing the metal oxide precursor and co-condensing the hydrolyzed metal oxide precursor and the hydrophobic surface modifying agent. Hydrophobic aerogels and hydrophobic aerogel articles are also disclosed.
Abstract:
Electrically conductive films comprising a flexible support, an extensible metal or metal alloy layer, and a crosslinked polymeric protective layer have at least one permanently deformed curved region. The films can be light transmissive and can have regions of compound curvature, and the metal or metal alloy layer can be substantially continuous. The films have reduced susceptibility to fracture or corrosion compared to commercially available electromagnetic interference (EMI) shielding films.
Abstract:
Nanoparticle compositions including calcite and a surface-modifying agent bonded to the calcite are described. The surface-modifying agent includes a binding group bonded to the calcite and a compatiblizing segment. The compatiblizing segment includes at least one of a polyethylene oxide, a polypropylene oxide, a polyester, a polyamide, or a combination thereof. The composition includes less than 2 wt.% solvents and/or resins. Methods of preparing nanoparticle compositions are also described.
Abstract:
Methods of preparing hybrid aerogels are described. The methods include co-condensing a metal oxide precursor and an organo-functional metal oxide precursor, and crosslinking the organo-functional groups with an ethylenically-unsaturated crosslink agent. Thermal energy and actinic radiation crosslinking are described. Both supercritical aerogel and xerogels, including hydrophobic supercritical aerogel and xerogels, are described. Aerogel articles, including flexible aerogel articles are also disclosed.
Abstract:
Solar control films containing a visible light-transmissive flexible support, a first nucleating oxide seed layer, a first metal layer, an organic spacing layer, a second nucleating oxide seed layer, a second metal layer and a polymeric protective layer. The thicknesses of the metal layers and spacing layer are such that the films are visible light-transmissive and infrared-reflective. The films have high visible light transmittance, high Reflected Energy and low Total Solar Heat Transmission
Abstract:
Electrically conductive films comprising a flexible support, an extensible metal or metal alloy layer, and a crosslinked polymeric protective layer have at least one permanently deformed curved region. The films can be light transmissive and can have regions of compound curvature, and the metal or metal alloy layer can be substantially continuous. The films have reduced susceptibility to fracture or corrosion compared to commercially available electromagnetic interference (EMI) shielding films.
Abstract:
Compositions comprising surface-modified calcite nanoparticles dispersed in a curable resin and to coatings and fibrous composites incorporating such compositions are described. The nanocalcite particles have a high magnesium to calcium surface concentration ratio. The surface-modifying agents include a binding group ionically associated with the nanoparticles, and a compatiblizing segment compatible with the curable resin. The surface-modifying agent may also include a reactive group capable of reacting with the curable resin. Methods of preparing nanocalcite composites, and coatings and fibrous composites prepared from such nanocalcite composites are also described.
Abstract:
Methods of forming hybrid aerogels are described. The methods include forming a hybrid aerogel from a metal oxide precursor and a branched telechelic copolymer, e.g., co-hydrolyzing and co-condensing the metal oxide precursor and the branched telechelic copolymer. Aerogels and aerogel articles, including hydrophobic aerogels and hydrophobic aerogel articles are also described.
Abstract:
Methods of making hydrophobic aerogels are described. Disclosed methods include forming a surface-modified metal oxide aerogel precursor from a sol comprising a solvent, a metal oxide precursor, and a hydrophobic surface modifying agent. The resulting modified precursor can be dried to from hydrophobic aerogels. Methods of forming the surface-modified metal oxide aerogel precursor include hydrolyzing the metal oxide precursor and co-condensing the hydrolyzed metal oxide precursor and the hydrophobic surface modifying agent. Hydrophobic aerogels and hydrophobic aerogel articles are also disclosed.