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US 2019/0283361 A1Published application
Composite laminate having a honeycomb core, and method for the manufacture thereof
AssigneeE.I. du Pont de Nemours and Company
InventorsZHI GANG JIA, Lei JIN, Tao SONG
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Abstract
A composite laminate comprises a preform and two skin layers covering the outer surfaces of the perform, wherein the preform comprises a honeycomb core, adhesive films and barrier films laid in sequence on its two outer surfaces, and a plurality of tubular rivets inserted through the preform. Also disclosed are methods for manufacturing the composite laminate by a vacuum-assisted resin infusion (VARI) method.
Claims20
A composite laminate having a honeycomb core, comprising in sequence:
- (a) a first skin layer,
- (b) a first barrier film,
- (c) a first adhesive film,
- (d) a honeycomb core,
- (e) a second adhesive film,
- (f) a second barrier film,
- (g) a second skin layer,
- (h) a plurality of tubular rivets,
- (i) a self-expanding sealant sealed around the tubular rivets, and
- (j) a matrix derived from a liquid binder,
- wherein
- the liquid binder is selected from the group consisting of phenolic resin, epoxy resin, unsaturated polyester resin, vinyl ester resin and combinations thereof;
- and has a viscosity of 100 cp to 500 cp at 25° C.;
- the layers (b), (c), (d), (e) and (f) are stacked in sequence to form a preform;
- and
- the tubular rivets are inserted through the preform and set apart from each other by a distance of 30 mm to 200 mm.
13 more elements
A composite laminate comprising:
- a preform sandwiched between a first fibrous skin layer and a second fibrous skin layer, wherein the preform comprises in order:
- a first barrier film,
- a first adhesive film,
- a honeycomb core,
- a second adhesive film,
- a second barrier film;
- wherein the preform further comprises a plurality of tubular rivets inserted through the thickness of the preform and having a length substantially equal to the thickness of the preform, the rivets being set apart from each other at a distance of 30 mm to 200 mm;
- wherein a self-expanding sealant is sealed around the tubular rivets within the cells of the honeycomb core;
- and
- wherein a matrix derived from a liquid resin comprising phenolic resin, epoxy resin, unsaturated polyester resin, vinyl ester resin, or combinations thereof is infused into the first fibrous skin layer and the second fibrous skin layer.
7 more elements
Dependencies are inferred from the claim text.