An NBR composition for rubber laminated metal, having 1 to 3 parts by weight of sulfur and 1 to 15 parts by weight of a disulfide compound such as 4,4-dithiodimorpholine or dithiocaprolactam represented by the general formula RN-S-S-NR (wherein RN is a cyclic linking group formed together with the N atom bonded to the S atom), based on 100 parts by weight of NBR. The rubber composition that can improve the protrusion properties of a rubber layer when used for, for example, a gasket or a brake shim material that is a laminated composite metal laminated with another metal plate.

A sheet including exfoliated clay minerals, having a density of 1.6 g/cm.sup.3 or less and a compression ratio of 20% or more.

Provided is a graphene foam laminate for use as a sealing material, comprising: (a) a layer of graphene foam having a thickness from 100 nm to 10 cm and comprising pores and pore walls having a 3D network of interconnected graphene planes or graphene sheets; and (b) a permeation-resistant polymer layer disposed on a primary surface of the graphene foam to form a two-layer laminate or two permeation-resistant polymer layers disposed on the two primary surfaces of the graphene foam to form a three-layer sandwich laminate, wherein the permeation-resistant polymer layer has a thickness from 10 nm to 1 cm.

A seal material composition according to the present invention includes: an epoxy compound including an epoxy group; and a polymerizable epoxy curing agent including a polymerizable functional group configured for cross-linking the epoxy groups and for radical polymerization in a single molecule.

The present invention is directed to a polypropylene composition (P) comprising a bimodal copolymer of propylene and 1-hexene prepared in the presence of a metallocene catalyst, said bimodal copolymer having a melt flow rate MFR2 in the range of 4.0 to 20.0 g/10 min. Further, the present invention is directed to a method for preparing the copolymer (C) and an article comprising said polypropylene composition (P).

A material for gaskets is disclosed, wherein a metal surface coating layer, a primer layer and a rubber layer are formed, or a metal surface coating layer and a rubber layer are formed on at least a part of one side or both sides of a substrate formed of a metal plate sequentially from the metal plate side, and the metal surface coating layer comprises (A) one or more carbonates selected from the group consisting of Mg carbonate, Co carbonate, Zr carbonate, Mn carbonate, Ni carbonate, and Cu carbonate and (B) one or more selected from the group consisting of silica, alumina, zirconia, and titania.

An anti-oxidation dipping treatment method for a graphite sealing element for a thermal power generation unit, and an anti-oxidation production line. The anti-oxidation dipping treatment method for a graphite sealing element for a thermal power generation unit comprises the following steps: S1, placing a graphite sheet into a soaking device for soaking; S2, conveying the soaked graphite sheet into a drying and curing device for drying and curing; S3, stacking the multiple dried and cured graphite sheets together, and subjecting same to compression molding to form a layered graphite body; and S4, stamping the layered graphite body to form a finished graphite sealing element with a desired appearance.

A sealing member includes a substrate, and a coating layer on the surface of the substrate. The substrate includes a polytetrafluoroethylene matrix having a porous structure with pores that contain alumina particles, and the coating layer is made of a condensate of an organosilicon compound.

A vacuum insulating panel may include: a first substrate; a second substrate; a plurality of spacers provided in a gap between at least the first and second substrates, wherein the gap is at pressure less than atmospheric pressure; and a seal (e.g., edge seal) provided at least partially between at least the first and second glass substrates. Elements such as edge seal materials and/or dimensions are configured to improve thermal performance and to increase the Condensation Resistance Factor for glass (CRF.sub.G) for the panel, so as to provide for a panel with a reduced likelihood to accumulate condensation in the field.

The present disclosure relates to a multilayer composite that may include a foam layer, and a multilayer topcoat component overlying the foam layer. The multilayer topcoat component may include a first topcoat layer that includes a polyether polyurethane material, and a second topcoat layer that includes a hydrophobic polyurethane material. The second topcoat layer may overly the first topcoat layer, and the multilayer composite material may have a water resistance rating of at least about 10 hours.