Hexcel Composites, Ltd. Patent applications |
Patent application number | Title | Published |
20120301665 | SANDWICH PANELS - A structural panel comprising an internal core material having first and second opposing faces, first and second face sheets bonded to the first and second opposing faces respectively, wherein the panel comprises an open-structured sheet, interposed between a first face of the core material and its respective face sheet and the panel comprises less than 200 gsm adhesive. | 11-29-2012 |
20120282434 | THERMOSETTING RESIN ADHESIVE CONTAINING IRRADIATED THERMOPLASTIC TOUGHENING AGENT - Thermosetting resins are provided that are toughened with an irradiated thermoplastic toughening agent. The resins have reduced levels of solvent-induced micro crack formation and do not lose their adhesiveness when attacked by solvent. The thermoplastic toughening agent is treated with a sufficient amount of high-energy radiation (e.g. electron beam or gamma rays) to cause reductions in solvent-induced micro crack formation and solvent-induced loss of adhesiveness when compared to the same toughened thermosetting resin in which a non-irradiated version of the thermoplastic toughening agent is used. | 11-08-2012 |
20120146256 | PROCESS FOR PROLONGING THE PROCESSING WINDOW OF THERMOSETTING RESINS - The processing window for thermosetting resins that contain particulate hardeners is prolonged using the combined steps of heat-treating the resin to form a low-viscosity resin mixture in which the particles are dissolved and then moulding the low-viscosity resin mixture at temperatures below the dissolution temperature of the particles to infuse a fibrous preform. The infused resin preform is heated to the curing temperature of the resin to provide final curing of the resin. | 06-14-2012 |
20120141763 | COMPOSITE MATERIALS - A curable prepreg comprising a structural layer of conductive fibres and a first outer layer of thermosetting resin, the resin layer comprising thermoplastic particles and glassy carbon particles provides improved electrical conductivity and excellent mechanical properties. | 06-07-2012 |
20120114899 | COMPOSITE MATERIALS - A curable prepreg or semipreg material comprising a layer of fibres and a substantially non-flowable curable resin having a layer of porous sheet material on an outer surface, the material allows automatic lay-up of high fibre content prepregs or semiprepregs typically used in industrial applications such as wind turbine blades. | 05-10-2012 |
20120100362 | PROCESS FOR MANUFACTURING COMPOSITE MATERIALS - A process for the manufacture of a prepreg comprising feeding a layer of unidirectional conductive fibres having a defined width, bringing into contact with a first face of the fibres a first layer of resin comprising thermosetting resin, and compressing the resin and fibres together by passing over one or more impregnation rollers, wherein the pressure exerted onto the conductive fibres and resin does not exceed 40 kg per centimetre of the width of the conductive fibres, and the resin being in sufficient amount for the resin to enter the interstices of the fibres and leave a first outer layer of resin essentially free of unidirectional conductive fibres. | 04-26-2012 |
20110294387 | STRUCTURED THERMOPLASTIC IN COMPOSITE INTERLEAVES - One or more layers of structured thermoplastic polymer, such as a light weight veil of thermoplastic polymer fibers, are located within the interleaf zone of laminates that are composed of fibrous layers and thermosetting resin. The thermoplastic veils are used in the interleaf zones as a replacement for thermoplastic toughening particles. The structured thermoplastic polymer may be coated with a conductive material to improve electrical conductivity through the laminate. | 12-01-2011 |
20110259514 | Composite Material For Structural Applications - Composite material that contain epoxy resin which is toughened and strengthened with thermoplastic materials and a blend insoluble particles. The uncured matrix resins include an epoxy resin component, a soluble thermoplastic component, a curing agent and an insoluble particulate component composed of elastic particles and rigid particles. The uncured resin matrix is combined with a fibrous reinforcement and cured/molded to form composite materials that may be used for structural applications, such as primary structures in aircraft. | 10-27-2011 |
20110174522 | COMPOSITE MATERIALS - A prepreg comprising resin and at least one fibre layer and further comprising an electrically insulating layer and an electrically conducting layer is provided, and particularly wherein the conductive layer is at or near the top surface, beneath that is the insulating layer and beneath that is a fibre/resin interleaf structure. | 07-21-2011 |
20110171034 | SEMI-PREG MATERIAL WITH A PROPERTY-ENHANCING SURFACE FILM FOR IMPROVED PROPERTIES - Semi-preg material is disclosed adapted for use in composite material comprising a) a first resin layer, b) covered on both side by layers of fibrous reinforcements whereby c) one of the two fabric layers is coated with a second resin layer and d) wherein said second resin layer has a tack level of not more than 100 N. Such semi-preg material has improved handling properties and contributes to the superior mechanical properties of the composite material formed therewith. | 07-14-2011 |
20110163275 | CONDUCTIVITY OF RESIN MATERIALS AND COMPOSITE MATERIALS - A resin material is provided which comprises at least one thermoset resin, carbon conductive additive material, and at least one thermoplastic polymer resin. The thermoplastic polymer resin dissolves in the thermoset polymer resin and phase separates upon cure. There is also provided a method of making the resin material, and additionally a composite material that comprising said resin material in combination with a fibrous reinforcement. The resin material and composite material may each be used in an uncured or cured form, and may find particular use as a prepreg material. | 07-07-2011 |
20110147670 | COMPOSITE MATERIALS WITH BLEND OF THERMOPLASTIC PARTICLES - Pre-impregnated composite material (prepreg) is provided that can be cured to form composite parts that have high levels of damage tolerance. The matrix resin includes a thermoplastic particle component that is a blend of particles that have a melting point above the curing temperature and particles that have a melting point at or below the curing temperature. | 06-23-2011 |
20110091719 | COMPOSITE MATERIALS - A composite material, the composite material comprising at least one prepreg, said prepreg comprising at least one polymeric resin and at least one fibrous reinforcement; and conducting particles dispersed in the polymeric resin. | 04-21-2011 |
20110091718 | COMPOSITE MATERIALS - A composite material, the composite material comprising at least one prepreg, said prepreg comprising at least one polymeric resin and at least one fibrous reinforcement; and conducting particles dispersed in the polymeric resin. | 04-21-2011 |
20110088923 | COMPOSITE MATERIALS - A composite material, the composite material comprising at least one prepreg, said prepreg comprising at least one polymeric resin and at least one fibrous reinforcement; and conducting particles dispersed in the polymeric resin. | 04-21-2011 |
20110070447 | Crystalline Resin Sandwich Films - A resin composition that is storable at ambient temperatures. The resin composition forms a cured resin when exposed to a curing agent and heated to a curing temperature that is relatively close to ambient temperature. The resin composition includes a crystalline resin component that is sandwiched between two non-crystalline resin components to provide a zone that is rich in crystalline thermosetting resin. The crystalline thermosetting resin has a melting point that is above ambient temperature, but below the curing temperature. The viscosity of the resin component changes from a high viscosity state to a low viscosity state when the temperature is increased from ambient temperature to the curing temperature. | 03-24-2011 |
20110049426 | MOULDING PROCESSES - Use of a resin system for making a composite material in a liquid moulding process. The resin system comprises an epoxy component and at least one curing agent, and at least 35 wt. % of the epoxy component is one or more naphthalene based epoxy resin. There is also provided a cured composite material, and a method of making the cured composite material in a liquid moulding process which comprises placing fibre reinforcement and the resin system in a mould and curing. The resin system and the methods of making a cured composite material are particularly applicable to liquid moulding processed such as resin trans moulding (RTM), vacuum assisted resin transfer moulding (VARTM), Seeman composite resin infusion moulding (SCRIMP), resin infusion under flexible tooling (RIFT), and liquid resin infusion (LRI). | 03-03-2011 |
20110034591 | Thermosetting Resin Containing Irradiated Thermoplastic Toughening Agent - Thermosetting resins are provided that are toughened with an irradiated thermoplastic toughening agent and which have reduced levels of solvent-induced micro crack formation. The thermoplastic toughening agent is treated with a sufficient amount of high-energy radiation (e.g. electron beam or gamma rays) to cause a reduction in solvent-induced micro crack formation in the cured resin when compared to the same toughened thermosetting resin in which the non-irradiated version of the thermoplastic toughening agent is used. | 02-10-2011 |
20110017867 | COMPOSITE MATERIALS - A composite material, the composite material comprising a prepreg, said prepreg comprising at least one polymeric resin and at least one conductive fibrous reinforcement, electrically conducting particles dispersed in the polymeric resin and a top layer of a metal-coated carbon fibre comprising a further resin component, wherein the metal comprises one or more metals selected from nickel, copper, gold, platinum, palladium, indium and silver. | 01-27-2011 |
20110014419 | PREPREGS - The invention provides a prepreg comprising matrix and fibres, having deposited thereon a plurality of regions raised at least 5 micrometres relative to the surface of the matrix, a method of preparing such a prepreg, a method of curing a laminate of a plurality of such preprags and the cured laminate produced by such a method. | 01-20-2011 |
20100239755 | COMPOSITE MATERIALS WITH BLEND OF THERMOPLASTIC PARTICLES - Pre-impregnated composite material (prepreg) is provided that can be cured to form composite parts that have high levels of damage tolerance. The matrix resin includes a thermoplastic particle component that is a blend of particles that have a melting point above the curing temperature and particles that have a melting point at or below the curing temperature. | 09-23-2010 |
20100104763 | Crystalline Resin Sandwich Films - A resin composition that is storable at ambient temperatures. The resin composition forms a cured resin when exposed to a curing agent and heated to a curing temperature that is relatively close to ambient temperature. The resin composition includes a crystalline resin component that is sandwiched between two non-crystalline resin components to provide a zone that is rich in crystalline thermosetting resin. The crystalline thermosetting resin has a melting point that is above ambient temperature, but below the curing temperature. The viscosity of the resin component changes from a high viscosity state to a low viscosity state when the temperature is increased from ambient temperature to the curing temperature. | 04-29-2010 |
20080295955 | Composite materials - A composite material, the composite material comprising at least one prepreg, said prepreg comprising at least one polymeric resin and at least one fibrous reinforcement; and conducting particles dispersed in the polymeric resin. | 12-04-2008 |