玻璃纤维对乙烯基酯复合材料层间性能的影响  

Effect of glass fiber on the interlaminar properties of vinyl ester composites

作　　者：彭新龙 PENG Xin-long(R&D Department,Guangdong Brand Builder New Materials Co.,Ltd.,Zhaoqing 526238,China)

机构地区：[1]广东百汇达新材料有限公司研发部,广东肇庆526238

出　　处：《热固性树脂》2023年第3期49-54,共6页Thermosetting Resin

摘　　要：为提升玻璃纤维增强复合材料的层间断裂韧性,采用模压成型工艺制备了玻璃短纤维(SGF)增韧乙烯基树脂(GF/VE)复合材料层压板,并对其进行I型断裂韧性(GIC)、拉伸性能和弯曲性能测试。结果表明,SGF层间铺入明显提升了复合材料的GIC,其中经硅烷偶联剂处理的SGF长度为12 mm,面密度为60 g/m^(2)时,增韧效果最佳,复合材料GIC从0.717 kJ/m^(2)增加到1.217 kJ/m^(2),提升了69.7%。层间铺入SGF也在一定程度上提高了复合材料拉伸性能和弯曲性能。扫描电镜分析表明通过SGF层间的桥联作用以及裂纹扩展过程中SGF抽拔和分叉劈裂消耗能量,有效地阻碍了裂纹的扩展,从而改善了复合材料的层间韧性。In order to improve the interlaminar fracture toughness of glass fiber reinforced composite,the short glass fiber(SGF)toughened vinyl resin(GF/VE)composite laminates were prepared by compression molding.The type I interlaminar fracture toughness(GIC),tensile and flexure properties of composites were tested.The result indicated that the interlayer placement of SGF could significantly improve the GIC of GF/VE composites.When the length of SGF was 12 mm and the surface density was 60 g/m^(2),the GIC of the composites was increased from 0.717 kJ/m^(2)to 1.217 kJ/m^(2),which was increase by 69.7%.The tensile and flexure properties of composites were also improved by SGF.The scanning electron microscopy analysis showed that the bridging effect between SGF layers and SGF extraction and bifurcation splitting during crack propagation effectively consumed energy and hindered the crack propagation,thereby improving the interlaminar toughness of the composites.

关 键 词：乙烯基树脂 玻璃纤维 复合材料 层间断裂韧性 硅烷偶联剂 

分 类 号：TB332[一般工业技术—材料科学与工程]