| 摘要 |
PROBLEM TO BE SOLVED: To manufacture a lightweight and waterproof composite panel of an open cell material like a honeycomb by using a resin transfer molding(RTM). SOLUTION: An open cell core material 1 is bonded to a resin/moisture shielding film 3 consisting of a specific polymer film with a film adhesive 2 before injecting a liquid resin into a fibrous reinforcing material 4 in an RTM step. Consequently, the sealing is achieved to the degree of at least, 95%, and further, even to 100%. Thus, the open cell core material 1 is prevented from being filled with a resin in the RTM step and is isolated from the migration of moisture after the use of this honeycomb sandwich panel. Thus the composite panel manufactured by the RTM method is suited for an aircraft. |
