| 摘要 |
<p>A method of producing a honeycomb structure includes the steps of: (a) providing a plurality of flexible sheets 5, 11 made from fibres including carbon fibres (e.g. woven sheets having 3000 filaments per tow); (b) depositing on each sheet a series of discrete regions 3,7 e.g. parallel stripes of a tacky adhesive (e.g. PVA) which adheres to the fibres of the sheet but does not substantially spread from the regions across the sheet; (c) stacking the sheets together so that the series of adhesive regions on alternate sheets have a mutual lateral displacement and so that the adhesive regions on each sheet adhere to corresponding regions on the adjacent sheet; (Fig. 1). (d) stretching the sheets apart at regions which ore not adhered together by the adhesive material so that a honeycomb structure is formed by the sheets, the adhesive regions forming joints between adjacent cells of the structure: (Fig. 3). (e) applying to the structure with the sheets stretched apart a material capable of being set to bond to the sheets and stiffen the structure to retain the honeycomb form (e.g. a conventional resin and hardener); (f) allowing the material applied in step (e) to set so that the structure retains its honeycomb form. <IMAGE></p> |
