Abstract:
Composite materials with dielectric properties for use in microwave applications, and methods of fabrication, are described. The composite materials include a filler, for example a ceramic, with high relative permittivity and a polymer constituent. The resulting composite material has a relative permittivity suitable for use in microwave applications. Dielectric resonator antennas using the composite material are also described.
Abstract:
The present application relates to a curable composition, and to uses thereof. The composition of the present application may exhibit superior processability and workability, and when cured may provide a cured product that exhibits excellent light extraction efficiency, cracking resistance, hardness, thermal shock resistance, and adhesive properties and that provides superior reliability under severe conditions over a long period of time and that prevents cloudiness, sticking onto a surface, or the like. The present application further relates to a curable composition which can prevent the sedimentation of additives and form a cured product having superior transparency even when additives such as fluorescent substances or photoconversion materials are added to the composition.
Abstract:
A curable resin composition includes 10 wt % to 70 wt % of at least one moisture curable resin, 10 wt % to 50 wt % of a plasticizer having a Brookfield viscosity of less than 25 cP at 23° C., and 0.1 wt % to 5 wt % of a non-tin catalyst. A method for producing a curable resin composition includes mixing 10 wt % to 70 wt % of at least one moisture curable resin, 10 wt % to 50 wt % of a plasticizer, and 0.1 wt % to 5 wt % of a non-tin catalyst.
Abstract:
Metal oxide-polymer composite particles have a median particle size D50 of 40-75 nm or 100-150 nm and an average RTA of at least 0.06. Alternatively or in addition, metal oxide-polymer composites comprise two or more populations of metal oxide particles differing in size, particle size distribution, or shape. Alternatively or in addition, the use of a multicomponent hydrophobizing system including an alkylsilane to fabricate metal oxide-polymer composite particles increases the tribocharge of the composite particles.
Abstract:
A method of forming a barrier to overcome lost circulation in a subterranean formation. The method includes injecting a polymer-sand nanocomposite into one or more lost circulation zones in the subterranean formation where the polymer-sand nanocomposite is formed from sand mixed with a polymer hydrogel. Further, the polymer hydrogel includes a hydrogel polymer, an organic cross-linker, and a salt. The sand additionally comprises a surface modification. The associated method of preparing a polymer-sand nanocomposite lost circulation material for utilisation in forming the barrier is provided.