Provided is a low-dielectric porous polymer film having a low dielectric constant at high millimeter-wave frequencies and thereby useful as a sheet for a millimeter-wave antenna. The low-dielectric porous polymer film comprises: a base material layer made of a polymer material and formed with fine pores dispersed therein; and a substantially smooth skin layer made of the same polymer material as that of the base material layer and formed on at least one of the surfaces of the base material layer.

Provided is a low-dielectric porous polymer film having a low dielectric constant at high millimeter-wave frequencies and thereby useful as a sheet for a millimeter-wave antenna. The low-dielectric porous polymer film comprises: a base material layer made of a polymer material and formed with fine pores dispersed therein; and a substantially smooth skin layer made of the same polymer material as that of the base material layer and formed on at least one of the surfaces of the base material layer.

A method of manufacturing a heat-fixing rubber roller includes: forming a rubber layer of a silicone rubber composition on an outer periphery of a metal core shaft, the composition containing water-soluble sugar powder and methylene glycol; vulcanizing the rubber layer; and eluting the sugar powder and the triethylene glycol from the vulcanized rubber layer to form a foam rubber layer.

Polymer composite materials are disclosed containing one or more chemical scavengers. The polymer composites are porous and are configured to be contacted with a liquid for removing trace amounts of metals, proteins, polypeptides, polyphenols, other organic compounds, and the like. In order to produce the porous composite polymer product, one or more chemical scavengers are combined with thermoplastic polymer particles and sintered into a shape. The polymer particles act as a binder trapping or encasing the one or more chemical scavengers in the porous structure.

Polymer composite materials are disclosed containing one or more chemical scavengers. The polymer composites are porous and are configured to be contacted with a liquid for removing trace amounts of metals, proteins, polypeptides, polyphenols, other organic compounds, and the like. In order to produce the porous composite polymer product, one or more chemical scavengers are combined with thermoplastic polymer particles and sintered into a shape. The polymer particles act as a binder trapping or encasing the one or more chemical scavengers in the porous structure.

A composite material according to the present invention includes: a frame portion including a first resin; and a plurality of voids. The composite material includes a first layer and a second layer each placed along a periphery of each of the plurality of voids. The first layer includes a plurality of inorganic particles. The second layer includes at least one resin selected from the group consisting of the first resin and a second resin different from the first resin. Moreover, the second layer covers the first layer from a farther side of the first layer and faces the void, the farther side being farther from the frame portion.

A method and resulting device that mimics the light scattering properties of a random structural pattern using microspheres.

A method and resulting device that mimics the light scattering properties of a random structural pattern using microspheres.

An aerogel that includes an open-cell structure and a polymer matrix is disclosed. The polymer matrix can include a branched polyimide polymer having a degree of branching of at least 0.5. The polymer matrix can contain less than 5% by weight of crosslinked polymers.

An aerogel that includes an open-cell structure and a polymer matrix is disclosed. The polymer matrix can include a branched polyimide polymer having a degree of branching of at least 0.5. The polymer matrix can contain less than 5% by weight of crosslinked polymers.