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对3种不同线密度的玻璃纤维进行直立式浸胶,将浸胶的玻纤通过叉式架构成型工艺制备短玻纤/不饱和聚酯树脂(CGF/UPR)架构夹芯材料。通过平压和测压性能测定及扫描电镜分析研究了玻纤线密度对(CGF/UPR)架构夹芯材料性能的影响。结果表明:900tex玻纤制得的(CGF/UPR)架构夹芯材料的平压比强度和侧压比强度最高,分别达到(1.80±0.01)×103 N·m/kg和(9.80±0.03)×103 N·m/kg。在该材料的平压和侧压两种受力过程中,材料结构的破坏均缘于纤维束自身破坏和粘结点破坏,这两种破坏形式结合架构夹芯材料的无序结构特征,导致短玻纤/不饱和聚酯树脂架构夹芯材料表现出平压无屈服性的特性。
Three types of glass fibers with different linear density were dipped vertically, and the glass fiber reinforced with glass fiber / unsaturated polyester resin (CGF / UPR) was used to fabricate the core material through fork-like structure molding. The effects of fiberglass linear density on the properties of (CGF / UPR) sandwich core material were studied by measuring the pressure and measuring the pressure and scanning electron microscopy. The results show that the strength of crush strength and the lateral pressure ratio of the (CGF / UPR) sandwich material made of 900tex glass fiber are the highest (1.80 ± 0.01) × 103 N · m / kg and (9.80 ± 0.03) × 103 N · m / kg. During both the flat and lateral compression of the material, the failure of the material structure is due to the destruction of the fiber bundles themselves and the destruction of the bonding points. These two types of damage, combined with the disorderly structure of the sandwich material, lead to Short Glass / Unsaturated Polyester Resin Core materials exhibit no yield pressure characteristics.