Method for producing a fiber reinforced product with an epoxy-based matrix

A method for the production of fibre-reinforced, epoxy resin products by resin-transfer moulding involves using an epoxy resin/aromatic diamine mixture containing 2-25 wt% crosslinkable polysiloxane-based elastomer particles with an average particle diameter of 1-5 microns and a mol. wt. of 1000-100...

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Bibliographische Detailangaben
Hauptverfasser:	VEIT, PETER, DEY, HOLGER, PALINSKY, ANDREAS, SCHILLGALIES, JUERGEN, STIEBER, ULRICH, TUMMINELLO, ANTONIETTA, REICHWEIN, HEINZ-GUNTER
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A method for the production of fibre-reinforced, epoxy resin products by resin-transfer moulding involves using an epoxy resin/aromatic diamine mixture containing 2-25 wt% crosslinkable polysiloxane-based elastomer particles with an average particle diameter of 1-5 microns and a mol. wt. of 1000-100000, surface-modified with groups which react with epoxy resin. A method for the production of fibre-reinforced, epoxy resin-based products involves (a) optionally preforming the fibre material, (b) placing the material in a mould (optionally precoated with release agent) and closing the mould to shape the material, (c) injecting under normal pressure a mixture of (i) 50-70 parts by weight (pts. wt.) epoxy resin, (ii) 25-50 pts. wt. aromatic diamine, (iii) 2-25 pts. wt. crosslinkable elastomer particles based on polyorganosiloxanes with an average particle diameter (d50) of 1-5 microns and an average mol. wt. of 1000-100000, surface-modified with groups which are reactive towards epoxy resin and (iv) 0.05-2 pts. wt. other conventional additives, (d) crosslinking the mixture, optionally by heating the mould and (e) demoulding the product.