filme polimérico para revestimento de superfície de materiais compósitos de fibra/plásticos

• Main Authors: WURZEL, RAJKO, Hans-Jürgen Karl, Monika Bauer
• Format: Patent
• Language: Portuguese
• Published: 04.09.2018
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CORRECTING FLUIDS; DYES; FILLING PASTES; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INKS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF MATERIALS THEREFOR; WOODSTAINS

Coating a fiber-reinforced plastic composite produced by a crushed core process from a composite comprising a core and a prepreg covering comprises using a substrate-supported polymer film comprising a resin and a filler, where the resin comprises an aromatic polycyanate and an aromatic polyol in amounts such that the molar ratio of cyanate groups to hydroxy groups is 95:5 to 70:30 and the degree of crosslinking of the resin is below its gel point. Coating a fiber-reinforced plastic composite produced by a crushed core process from a composite comprising a core and a prepreg covering comprises using a substrate-supported polymer film comprising a resin and a filler, where the resin comprises an aromatic polycyanate and an aromatic polyol in amounts such that the molar ratio of cyanate groups to hydroxy groups is 95:5 to 70:30 and the degree of crosslinking of the resin is below its gel point. The resin side of the film is placed on the prepreg, the substrate is removed and the composite is then cured under pressure at elevated temperature.