A Formula of a phosphorous fire-retardant hardener having fire-retardant and heat-resistant properties as well as a low-dielectric constant. With a preparation of glass-fiber laminated board, the hardener meets UL-94V fire-retardant requirements and has a dielectric constant 5 of 4.0 (1 GHz).

A heat-insulation sheet includes a first silica xerogel layer, a second silica xerogel layer, and a composite layer. The first silica xerogel layer includes a first silica xerogel, and the second silica xerogel layer includes a second silica xerogel. The composite layer is located between the first silica xerogel layer and the second silica xerogel layer, and includes at least one type of unwoven fabric fibers, and a third silica xerogel. The third silica xerogel is located in a spatial volume of the unwoven fabric fibers.

An anisotropic conductive film configured to suppress flowing of conductive particles attributable to the flowing of an insulating resin layer at the time of anisotropic conductive connection, improve the conductive particle capturing properties, and reduce short circuits has a conductive particle dispersion layer including the conductive particles dispersed (or distributed) in the insulating resin layer. The insulating resin layer is a layer of a photo-polymerizable resin composition. The surface of the insulating resin layer in the vicinity of each of the conductive particles has an inclination or an undulation with respect to the tangent plane of the insulating resin layer in the center portion between the adjacent conductive particles.

In order to provide electrical insulating paper and an electrical insulating sheet including the same which exhibit excellent dielectric breakdown strength, excellent hygroscopic dimensional stability and thermal dimensional stability, and excellent tear strength and wear durability, a nonwoven fabric is fabricated wherein the fabric is a wet nonwoven fabric containing a meta-aramid fiber and a polyphenylene sulfide short fiber and a proportion of the polyphenylene sulfide short fiber at least partially fused in the wet nonwoven fabric is 40% or less, and the wet nonwoven fabric has a dielectric breakdown strength of 17 kV/mm or more.

The present invention provides a polycarbonate resin composition characterized by containing 73 to 94.5 mass % of a polycarbonate resin (A), 5 to 25 mass % of a phosphorus-based flame retardant (B), and 0.1 to 2 mass % of a fluoropolymer (C), and by having a flow value of 10.01 to 100.01 cm.sup.3/sec at 280 C. The present invention also provides a sheet and a film using the polycarbonate resin composition.

The present disclosure relates generally to a layered structure for a radome for use with radiation of a free space frequency. The present disclosure relates more particularly to a layer structure for a radome having a core with an inside surface and an exposed outside surface. The core includes a first core layer having a first relative permittivity of at least 2.3 and a second core layer having a second relative permittivity of at least 2.3. The first core layer is no more than 0.75 mm from the outside surface of the core. An inner structure is disposed on the inside surface of the core and has at least one layer. Each of the first relative permittivity and second relative permittivity is at least 0.4 greater (e.g., at least 0.7 greater, at least 1 greater, or at least 1.3 greater) than a relative permittivity of any layer in the inner structure.

The Internet of Things (IoT)-based receiver according to an aspect of the present disclosure includes a signal receive unit that receives a signal from a base station, which supports one IoT mode among a plurality of IoT modes, a mode determination unit determinates the IoT mode that is supported by the base station based on the received signal, and a function unit that processes a function related to IoT-based communication, supports each of the plurality of IoT modes, and operates based on the IoT mode, which is supported by the base station, among the plurality of IoT modes that is determined by the mode determination unit.

Multi-layer films, and processes to make the films, that enable the delivery of a substrate featuring a peelable thin layer of low haze, amorphous, isotropic film with the desired properties of high modulus, high usage temperature, UV blockage, and toughness The films are made using a co-extrusion, co-orientation and annealing process to enable the delivery of a thin isotropic, UV blocking layer on top of a release layer and support substrate. These film constructions can be kept together during additional processing steps such as coating and converting. The release and dimensionally stable substrate layer can be easily removed once processing steps are completed.

Disclosed are: a polyalkylene terephthalate resin composition comprising (A) a polyalkylene terephthalate resin and (B) an acrylic-based core-shell polymer which has an average particle size of 2 m or greater and in which an amount of the core layer component is more than 80% by mass but less than 100% by mass relative to a total mass of the core layer component and a shell layer component; and a molded article which is obtained by molding the polyalkylene terephthalate resin composition.

The present invention provides an insulation film, comprising a film upper layer and a film lower layer, wherein both of the film upper layer and film lower layer are made of a PC or PET material, the PC or PET material contains a flame retardant to meet the flame retardance and puncture resistance property thereof; a film intermediate layer located between the film upper layer and the film lower layer, the film intermediate layer is made of the blends of PP and/or PE and PC and/or PET; an upper surface of the film intermediate layer is bound together with a lower surface of the film upper layer, a lower surface of the film intermediate layer is bound together with an upper surface of the film lower layer.