MELT BINDERS FOR ARTICLES MADE OF POLYMER COMPOSITE MATERIALS

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Abstract

The article presents a low-cost, energy-efficient, environmentally safe technology for obtaining products from composite materials. The autoclavless technology of manufacturing parts and structural elements from polymer composite materials is known as RFI (Resin Film Infusion) technology using molten binders. The low costs of forming PCM products using RFI technology (necessary equipment: thermal cabinets, vacuum pumps, tooling of formed products, auxiliary equipment and materials) make it possible to obtain products of various shapes. The RFI method ensures the required weight ratio of filler and binder in the material of the part and enables to obtain parts with the necessary stiffness characteristics. RFI technology eliminates the expensive prepreg manufacturing procedure and the thermal process of autoclave molding, which leads to a 20-25 % reduction in the cost of the part. As a result of the use of molten technology, it is achieved: reducing the production cycle of glued structures by 2-3 times, the labor intensity of manufacturing honeycomb structures by 40-50 % (due to a reduction in technological operations compared to conventional adhesives), the amount of equipment by 1.5-2 times, the weight of the structure (especially with honeycomb filler) by 30-50 %, the amount of emissions of harmful substances into the atmosphere by 10-15 times.