METHOD FOR MANUFACTURE OF SHEETS OF POLYMER COMPOSITE MATERIAL Russian patent published in 2021 - IPC B29C53/52 B29C53/56 

FIELD: mechanical engineering.

SUBSTANCE: invention relates to the area of mechanical engineering, mainly space and aviation, associated with production of multilayer honeycomb panels with high specific values of strength and stiffness used as lining for multilayer honeycomb solar panels of spacecrafts, as well as flexible elements of transformable space antennas. The object of the invention is to obtain thin sheets of fibrous polymer composite materials with an orthogonal reinforcement pattern defining a determined level of physical and mechanical properties of the material. The method of manufacture of sheets of polymer composite materials includes sequential application of an anti-adhesive, electrical insulating and adhesive layers onto a flat forming plate, winding a fibrous material, hardening the adhesive layer at elevated temperature and pressure, wherein the anti-adhesive, electrical insulating and adhesive layers are laid on both surfaces of the forming plate, and films made of polymeric materials are used as an adhesive layer, the layers are then fixed on the forming plate along the perimeter and installed into adjustable fasteners of the winding apparatus, wherein the feeding apparatus is supplied with fibrous material in form of a bundle the starting edge whereof is fixed at the edge of the forming plate and the first layer of the bundle is wound, followed by detaching two diagonally located adjustable fasteners from the sheet and rotating the structure relative to the diagonal between the two remaining fixed adjustable fasteners, the removed adjustable fasteners are fixed again and the second orthogonal layer of the bundle is wound, a number of layers determined by the reinforcement pattern is consequently wound thereby, followed by the structure being detached from the clamps and moved to the press and setting the hardening mode of the adhesive layer, the structure is then removed from the press and cut along the perimeter, then two finished sheets of polymer composite materials are removed from the forming plate.

EFFECT: provided are high specific values of strength and stiffness, predetermined specific electrical resistance of sheet composite materials with minimum parameters of thickness, thickness variation and non-flatness, and additionally, increased productivity, efficiency and sustainability of production.

1 cl, 1 dwg