不同树脂基体对玻璃纤维增强复合材料边框力学性能的影响
Effect of Different Resin Matrices on Mechanical Properties of Glass Fiber Reinforced Composite Frame
为探究树脂基体对玻璃纤维增强复合材料边框力学性能的影响,采用乙烯基树脂、聚氨酯树脂、丙烯酸-聚氨酯树脂、改性聚氨酯树脂制备玻璃纤维增强复合材料边框,通过拉伸试验、弯曲试验、剪切试验等方法对比不同树脂基体复合材料边框的力学性能,结合扫描电镜微观形貌分析探讨树脂基体与玻璃纤维结合界面与力学性能的关系。结果表明:力学性能主要受基体致密程度及基体与玻璃纤维界面结合情况的影响。与乙烯基树脂相比,聚氨酯及丙烯酸-聚氨酯树脂基体致密性及与玻璃纤维结合界面致密度较好,力学性能较乙烯基复合边框高。在聚氨酯树脂中添加改性树脂能够进一步增加基体致密度及与玻璃纤维的结合力,有效提升综合力学性能。
In order to explore the influence of resin matrix on the mechanical properties of glass fiber reinforced composite frames, the glass fiber reinforced composite frames prepared by ethylene resin, polyurethane resin, acrylic-polyurethane resin and modified polyurethane resin were used. The mechanical properties of different resin matrix composite frames were compared by tensile test, flexural test and shear test, and the relationship between the interface between resin matrix and glass fiber and mechanical properties was analyzed by scanning electron microscopy. The results showed that the mechanical properties were mainly affected by the compactness of the matrix and the interfacial bonding between the matrix and the glass fiber. Compared with ethylene resin, the compactness of polyurethane and acrylic-polyurethane resin matrix and the interfacial bonding strength with glass fiber were better, and the mechanical properties were higher than those of ethylene resin composite frame.The addition of modified resin to polyurethane resin can further increase the compactness of the matrix and the interfacial bonding strength with glass fiber, and effectively improve the comprehensive mechanical properties.
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无锡市检验检测认证研究院科研基金(2024JYKJ007)
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