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1.发明公开
公开(公告)号：EP3450486A1
公开(公告)日：2019-03-06
申请号：EP17790004.0
申请日：2017-03-28
发明人： AZAROV, Andrey Valerievich , VASILIEV, Valery Vitalievich , RAZIN, Alexandr Fedorovich , SALOV, Vladimir Alekseevich
摘要： The invention relates to the field of composite materials and can be used for the manufacture of parts and structures made of composite materials, such as brackets, fittings, basic parts, wearable products, mesh and honeycomb structures for use in aviation, rocket and space technology, medicine, automotive industry, etc. The reinforcing composite filament which contains a roving of reinforcing fibers impregnated with a thermosetting binder and has a cross section in the shape of a circle 0.1-0.7 mm in diameter or an ellipse with ellipticity from 1 to 2 and the largest diameter of 0.1-0.7 mm; and the impregnated roving is subjected to heat or other treatment right up to a complete curing of the thermosetting binder. With the help of the claimed composite filament, a prepreg can be made by adding a thermoplastic binder. And also the tape can be produced by connecting the claimed filament or prepreg with the use of cross-links made of thermoplastic material. The filament is produced in the machine containing a bobbin holder, which is fitted with at least one bobbin with a roving of reinforcing fibers or reinforcing and functional fibers, an impregnator that impregnates the roving with a thermosetting binder, two heat treatment chambers for a complete curing of the thermosetting binder (the temperature is 70-130°C in the first chamber, and 160-400°C in the second chamber), a finished filament receiver fitted with at least one receiving bobbin driven by a drive that ensures the pulling of the roving through all the elements of the machine. To manufacture a prepreg, the machine is fitted with an applicator to apply a thermoplastic coating on a completely cured roving impregnated with a thermosetting binder. The invention makes it possible to reduce the complexity of the manufacture of parts with a thermoplastic matrix, which leads to a significant reduction in the cost of manufacturing parts with a thermoplastic matrix (many times lower); to reduce the time of manufacture of a product due to the lack of need for long-term polymerization of a binder; to increase the shelf life of starting materials (prepreg) and to improve the efficiency of manufacture of products from composite materials. The invention is especially useful for implementation in additive processes of the manufacture of parts from composite materials, such as 3D-printing. [ Fig. 1 ]
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