A reinforcement sheet has a composite layer including fibres and a polymer A and a coating layer including polymer B, each polymer having at least 65 mol % of a repeat unit of formula:

##STR00001##

wherein for each polymer A and B, t1, and w1 independently represent 0 or 1 and v1 represents 0, 1 or 2. A method of forming the reinforcement sheet is also disclosed, in addition to a method for forming an article comprising a laminate of the reinforcement sheets and the article comprising such a laminate. The repeat unit may be ether-ether-ketone.

A reinforcement sheet has a composite layer including fibres and a polymer A and a coating layer including polymer B, each polymer having at least 65 mol % of a repeat unit of formula:

##STR00001##

wherein for each polymer A and B, t1, and w1 independently represent 0 or 1 and v1 represents 0, 1 or 2. A method of forming the reinforcement sheet is also disclosed, in addition to a method for forming an article comprising a laminate of the reinforcement sheets and the article comprising such a laminate. The repeat unit may be ether-ether-ketone.

A bulletproof panel includes: (i) a ceramic plate A; (ii) at least one phenol resin impregnated aramid fabric laminate C having phenol resin impregnated aramid fabrics C1, C2 and C3 which are laminated thereon; and (iii) an epoxy resin impregnated fabric B disposed between the ceramic plate A and the phenol resin impregnated aramid fabric laminate C, and impregnated with an epoxy resin. The phenol resin impregnated aramid fabrics C1, C2 and C3 may be aramid fabrics impregnated with a phenol resin, and aramid fabrics impregnated with a phenol/polyvinyl butyral mixture resin. The ceramic plate A and the phenol resin impregnated aramid fabric laminate C are not delaminated from each other even under a high-temperature environment, and thereby greatly enhancing the bulletproof performance.

A bulletproof panel includes: (i) a ceramic plate A; (ii) at least one phenol resin impregnated aramid fabric laminate C having phenol resin impregnated aramid fabrics C1, C2 and C3 which are laminated thereon; and (iii) an epoxy resin impregnated fabric B disposed between the ceramic plate A and the phenol resin impregnated aramid fabric laminate C, and impregnated with an epoxy resin. The phenol resin impregnated aramid fabrics C1, C2 and C3 may be aramid fabrics impregnated with a phenol resin, and aramid fabrics impregnated with a phenol/polyvinyl butyral mixture resin. The ceramic plate A and the phenol resin impregnated aramid fabric laminate C are not delaminated from each other even under a high-temperature environment, and thereby greatly enhancing the bulletproof performance.

A component (A1) thereof includes an epoxy resin having at least one of a naphthalene skeleton or a biphenyl skeleton. A component (A2) thereof includes a phenolic resin having at least one of the naphthalene skeleton or the biphenyl skeleton. A component (B) thereof includes a high molecular weight substance having structures expressed by at least formulae (b2) and (b3) out of formulae (b1), (b2), and (b3) and having a weight average molecular weight equal to or greater than 200,000 and equal to or less than 850,000. A component (C1) thereof includes a first filler obtained by subjecting a first inorganic filler to surface treatment using a first silane coupling agent expressed by formula (c1). A component (C2) thereof includes a second filler obtained by subjecting a second inorganic filler to surface treatment using a second silane coupling agent expressed by formula (c2).

A component (A1) thereof includes an epoxy resin having at least one of a naphthalene skeleton or a biphenyl skeleton. A component (A2) thereof includes a phenolic resin having at least one of the naphthalene skeleton or the biphenyl skeleton. A component (B) thereof includes a high molecular weight substance having structures expressed by at least formulae (b2) and (b3) out of formulae (b1), (b2), and (b3) and having a weight average molecular weight equal to or greater than 200,000 and equal to or less than 850,000. A component (C1) thereof includes a first filler obtained by subjecting a first inorganic filler to surface treatment using a first silane coupling agent expressed by formula (c1). A component (C2) thereof includes a second filler obtained by subjecting a second inorganic filler to surface treatment using a second silane coupling agent expressed by formula (c2).

Low-density thermoplastic expandable microspheres are disclosed. Various low-density structures, in particular, sandwich panels, based on foam prepared from the low-density microspheres, are also disclosed. Process of preparing low-density polymeric microspheres, per se, and the corresponding low-density structures, based on the microsphere foam, are also disclosed.

Low-density thermoplastic expandable microspheres are disclosed. Various low-density structures, in particular, sandwich panels, based on foam prepared from the low-density microspheres, are also disclosed. Process of preparing low-density polymeric microspheres, per se, and the corresponding low-density structures, based on the microsphere foam, are also disclosed.

A separator member for a fuel cell includes: a first resin layer including a resin; and a graphite layer that is layered on the first resin layer and substantially made of graphite. The layering amount of the graphite layer is 50 g/m.sup.2 or less, and the volume resistivity of the graphite is 3 mΩ.Math.cm or less.

A floor panel has a substrate and a decorative layer of wood veneer provided thereon having a thickness of 1 millimeter or less. The substrate has an average density of more than 750 kilograms per cubic meter. The floor panel is rectangular and oblong and comprises a pair of opposite short edges and a pair of opposite long edges. The floor panel, on at least said two opposite long edges, is provided with coupling means allowing that two of such floor panels can be coupled to each other in a vertical direction perpendicular to the plane of the coupled panels and in a horizontal direction in this plane and perpendicular to the respective edge. The wood veneer and/or the substrate immediately underneath the wood veneer is treated at least at the short edges with a fluoro copolymer or a polymeric methylene diphenyl diisocyanate.