关键词: 真空导入成型工艺, 格构增强型, 复合材料夹层结构, 力学性能

Abstract:

The vacuum infusion molding process (VIMP) is becoming popular as a new type for largescale/unusual composites. Selecting H60 PVC foam, fouraxis Eglass nonwoven fabric and vinyl resin, a type of innovative reinforced sandwich composite as lattice reinforced sandwich (LRS) are fabricated by VIMP. The fabrication results show that VIMP is a highspeed and costeffective manufacturing method because of the resin flow channel provided by the acuminate grooves in both sides of foam core. The lattice in LRS along core’s height assure an even flow on both sides of core that can complete the filling process in a short time. The shear, flatwise compression and flexural behavier of LRS are enhanced compared with the traditional sandwich. The flexural ultimate bearing capacity of LRS are studied which can be used as reference to engineering practice.