Abstract: Embodiments of the present disclosure are directed to a composition and composite for protecting a transmission/reception device. The composite can include a reinforcing material and a cured epoxy composition impregnating the reinforcing material. The cured epoxy composition can contain reaction constituents including less than 50% stoichiometric amount of an anhydride curing agent to an epoxy resin. The composite can exhibit synergistic improvements in mechanical strength, weatherability, and signal transmission properties.

Abstract: Certain embodiments are directed to cyanate resin blends comprising, for example, a mixture of a cyanate monomer and a cyanate oligomer. The resin blends are effective to provide a dielectric constant of less than 2.7, a glass transition temperature of at least 150° C. and a moisture absorption of less than 1.5%. Radomes using the resin are also described.

Abstract: Certain embodiments are directed to resins comprising norbornene derivatives for use in structures such as radomes. In some examples, the radome comprises a dielectric constant of less than 2.7, a loss tangent of less than 0.003 and a moisture absorption of less than 1.5%.

Abstract: Certain embodiments are directed to cyanate resin blends comprising, for example, a mixture of a cyanate monomer and a cyanate oligomer. The resin blends are effective to provide a dielectric constant of less than 2.7, a glass transition temperature of at least 150° C. and a moisture absorption of less than 1.5%. Radomes using the resin are also described.

Abstract: Certain embodiments are directed to cyanate resin blends comprising, for example, a mixture of a cyanate monomer and a cyanate oligomer. The resin blends are effective to provide a dielectric constant of less than 2.7, a glass transition temperature of at least 150° C. and a moisture absorption of less than 1.5%. Radomes using the resin are also described.

Abstract: Embodiments of the present disclosure are directed to a composition and composite for protecting a transmission/reception device. The composite can include a reinforcing material and a cured epoxy composition impregnating the reinforcing material. The cured epoxy composition can contain reaction constituents including less than 50% stoichiometric amount of an anhydride curing agent to an epoxy resin. The composite can exhibit synergistic improvements in mechanical strength, weatherability, and signal transmission properties.

Abstract: The present disclosure is directed to composite structures, such as low friction liners, exhibiting superior performance. In certain embodiments of the present disclosure, a composite structure can include a first outer major surface adapted to contact a movable surface, and a second outer major surface adapted to contact a stationary surface, wherein the first outer major surface has a lower surface roughness than the second outer major surface, and wherein the composite has a mean average thickness of less than 0.3 mm. The composite structure can have unexpected synergistic improvement in properties such as low surface roughness, high dielectric strength, high resistance to edge wicking, high resistance to surface wicking, low content of surface defects, an increased abrasion resistance, and combinations thereof, particularly the maintenance of these properties over a long life.

Abstract: Certain embodiments are directed to cyanate resin blends comprising, for example, a mixture of a cyanate monomer and a cyanate oligomer. The resin blends are effective to provide a dielectric constant of less than 2.7, a glass transition temperature of at least 150° C. and a moisture absorption of less than 1.5%. Radomes using the resin are also described.

Abstract: Certain embodiments are directed to resins comprising norbornene derivatives for use in structures such as radomes. In some examples, the radome comprises a dielectric constant of less than 2.7, a loss tangent of less than 0.003 and a moisture absorption of less than 1.5%.