Method for preventing buckling deformation and slippage of honeycomb core curing

Abstract

The invention discloses a method for preventing buckling deformation and slippage of honeycomb core curing. The 30 cm-50 cm allowance is reserved on the periphery of each component in a honeycomb workpiece, a potting material is used for conducting potting on the 30 cm-50 cm allowance areas of the edges of the honeycomb core, curing is conducted, a honeycomb core plate is combined with an upper gasket and a lower gasket, the edges are aligned and are fixed through adhesive tape, positioning holes are drilled in the allowance areas, 30 mm away from the edges, of the center positions of the edges of the gaskets and the honeycomb core, and positioning pins matched with the workpiece in thickness are manufactured; and adhesive films and upper and lower panel prepreg are laid and pasted to thetwo sides of the honeycomb core where the positioning holes are drilled, during laying and pasting of the adhesive films and the prepreg, avoiding treatment is conducted on the positions of the honeycomb positioning holes, adhesive films are laid and attached to the bonding faces of the upper gasket and the lower gasket, then the upper gasket and the lower gasket are combined with the honeycomb core on which upper panel and lower panel laying and pasting are completed, the positioning holes are aligned, the positioning pins are inserted into the positioning holes in all the edges of the workpiece, and the positions of all the components are locked; and finally, the combined workpiece is subjected to curing treatment, and the 30 cm-50 cm allowance on the edges is removed after the workpieceis cured.

Description

technical field [0001] The invention belongs to the field of molding and curing of composite materials, and relates to a method for preventing the instability, deformation and slippage of a honeycomb core during curing. Background technique [0002] The invention relates to a honeycomb sandwich structure composite material product, which is composed of upper and lower gaskets, an upper panel (upper skin), a Nomex honeycomb core, an adhesive film, and a lower panel (lower skin). Among them, the gasket is a cured composite material laminate, which is glued and co-cured with the upper and lower panels, honeycomb core and adhesive film. For the Nomex honeycomb core, the compressive strength of the honeycomb plane is relatively high, but it does not have high pressure bearing capacity in the L and W directions. When bonding and co-curing in the autoclave, the lateral pressure will cause the honeycomb core to Shrinkage instability deformation and slippage. Aiming at the problem ...

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to provide a process for solving the shrinkage, instability, deformation and slippage of the honeycomb sandwich core of the honeycomb sandwich structure composite material parts in the bonding and co-curing process.

Images