Method for preventing chamfer debonding of composite sandwich structural member

• Main Authors: LI ZIYUAN, XU SISI, TONG SHUHUI, DAI DONGMEI, ZHAO XUEYING, HAO GANGNING, WANG ZHIGANG
• Format: Patent
• Language: Chinese; English
• Published: 19.03.2024
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The invention provides a method for preventing a chamfer of a composite sandwich structure from being debonded, which comprises the following steps: 1) processing a core material of the composite sandwich structure, and forming a core material chamfer on the core material; 2) drying the core material processed in the step 1); 3) paving a lower skin of the sandwich structural member on the forming tool; 4) paving a layer of adhesive film on the lower skin; 5) laying a core material; (6) a layer of adhesive film is laid on the core material, and a layer of expansion adhesive film is additionally arranged at the chamfer of the core material; 7) paving an upper skin of the sandwich structural member; and 8) pasting a vacuum bag, and curing according to a prepreg curing curve. The defect of chamfer debonding easily caused by the large chamfer of the core material can be effectively prevented, and the product manufacturing qualification rate is improved. 本发明提供了一种防止复合材料夹层结构件倒角脱粘的方法，包括以下步骤：1)加工复合材料夹层结构芯材，芯材上具有芯材倒角；2)