A method of manufacturing a composite product comprises the steps of forming a first layer from a non-crimped fabric material (186;192;208) and forming a second layer from a unidirectional fibre material (124;142;162), wherein the non-crimped fabric material of the first layer comprises fibres at a non-zero angle to the unidirectional fibre material of the second layer, impregnating (106) at least one of the unidirectional fibre material and non-crimped fabric material with an uncured matrix material, assembling the first and second layers, pultruding (108) the first and second layers through a die and curing the matrix material to form the composite product.
B29C 70/52 - Pultrusion, i.e. forming and compressing by continuously pulling through a die
B29C 70/08 - Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, with or without non-reinforced layers
B29C 70/20 - Fibrous reinforcements only characterised by the structure of fibrous reinforcements using fibres of substantial or continuous length oriented in a single direction, e.g. roving or other parallel fibres
2.
DEVICE FOR PRODUCING A PART FROM COMPOSITE MATERIAL INCORPORATING AT LEAST ONE OPTICAL FIBRE
A facility (1) for producing a part (3) from composite material incorporating at least one optical fibre (5), said facility comprising at least: a first feed device (2) comprising a plurality of reinforcing fibres (7) impregnated with resin, a second feed device (16) comprising at least one optical fibre (5), separate from the first feed device (2), a pultrusion die (11) in the shape of the part (3) made from composite material to be obtained, a traction device configured to pull the reinforcing fibres (7) and the optical fibre (5) from the feed devices (2) through the pultrusion die (11), and a positioning element (13) present at the entrance (15) of the pultrusion die and having at least one guide opening kept in a predefined position relative to the entrance (15) of the die.
B29C 70/88 - Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced
B29C 70/52 - Pultrusion, i.e. forming and compressing by continuously pulling through a die
G02B 6/44 - Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
H01B 11/22 - Cables including at least one electrical conductor together with optical fibres
B29C 70/86 - Incorporating in coherent impregnated reinforcing layers
B29C 47/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor (extrusion blow-moulding B29C 49/04)
3.
IMPREGNATION DEVICE, UNIT FOR MANUFACTURING A HOLLOW PROFILE SECTION BY PULTRUSION COMPRISING SUCH A DEVICE, AND CORRESPONDING MANUFACTURING METHOD
Device (20) for impregnating fibres (12) with resin (32), comprising a hollow peripheral element (22) that has a main axis (A) and a central element (30) coaxial with the peripheral element (22) and housed at least partially inside the latter. A circumferential injection chamber (42) is delimited between the internal wall of the peripheral element (22) and the external wall of the central element (30), said injection chamber having an inlet end (42A) and an outlet end (42B), and the device comprises resin conveying means communicating with said injection chamber. A unit for manufacturing a hollow profile section by pultrusion comprising such an impregnation device and a corresponding method of manufacture are also divulged.
B29C 70/52 - Pultrusion, i.e. forming and compressing by continuously pulling through a die
B29B 15/12 - Coating or impregnating of reinforcements of indefinite length
B29C 69/02 - Combinations of shaping techniques not provided for in a single one of main groups , e.g. associations of moulding and joining techniques; Apparatus therefor of moulding techniques only
B29C 53/56 - Winding and joining, e.g. winding spirally
The present invention relates to a solid crosslinkable resin composition which is ductile at ambient temperature, comprising: - (A) a crosslinkable resin which is in liquid form at a temperature of between 60 and 80°C; - (B) an optional crosslinking agent; and - (C) additives, said additives comprising: - (C1) a solid metallic filler in powder form; - (C2) a thermoplastic; - (C3) an optional chain extender which can react with the resin (A); - (C4) optionally, organic or inorganic non-metallic particles or fibres; the additives (C) representing between 20% and 55% by weight of the composition, advantageously between 30% and 50% by weight, advantageously between 40% and 50% by weight. It also relates to the use thereof for filling the empty spaces of a composite structure, to the crosslinked composition obtained, to the composite structure incorporating the crosslinked composition and to a process for manufacturing this composite structure.
C08L 63/00 - Compositions of epoxy resins; Compositions of derivatives of epoxy resins
B29C 70/04 - Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
The present invention relates to a solid crosslinkable resin composition which is ductile at ambient temperature, comprising: - (A) a crosslinkable resin which is in liquid form at a temperature of between 60 and 80°C; - (B) an optional crosslinking agent; and - (C) additives, said additives comprising: - (C1) a solid metallic filler in powder form; - (C2) a thermoplastic; - (C3) an optional chain extender which can react with the resin (A); - (C4) optionally, organic or inorganic non-metallic particles or fibres; the additives (C) representing between 20% and 55% by weight of the composition, advantageously between 30% and 50% by weight, advantageously between 40% and 50% by weight. It also relates to the use thereof for filling the empty spaces of a composite structure, to the crosslinked composition obtained, to the composite structure incorporating the crosslinked composition and to a process for manufacturing this composite structure.
C08L 63/00 - Compositions of epoxy resins; Compositions of derivatives of epoxy resins
B29C 70/04 - Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
patents
