摘要
基于树脂基体的固化工艺与阻尼材料的硫化特性,利用正交试验法研制了一种能够与酚醛树脂在165℃发生共固化的黏弹性阻尼材料。然后将阻尼材料制成阻尼胶浆,探索使用刷涂工艺将中间层制成带有阻尼薄膜的预浸料,最终按照设计的铺层顺序根据共固化工艺制成玻璃纤维增强酚醛树脂基复合材料阻尼结构。通过层间剪切实验研究该复合材料结构的层间剪切性能,获得了层间剪切强度随阻尼层厚度的变化曲线。当阻尼层仅为0.1 mm时,其最大剪切力为4647 N,层间剪切强度达到7.435 MPa。随着阻尼层厚度的增大,共固化阻尼复合材料结构的层间剪切强度逐渐降低,实验研究表明,阻尼层与约束层间具有优异的层间结合性能。模态实验结果表明,共固化复合材料具有良好的阻尼层能。利用扫描电镜对其剪切失效面进行微观分析,结果表明树脂基体与阻尼材料具有良好的相容性。这为共固化阻尼复合材料的进一步应用提供了理论参考。
A viscoelastic damping material which could co-cure with phenolic resin at 165℃was developed by orthogonal test.It was based on the curing process of resin matrix and vulcanization characteristics of damping material.Then the damping material was dissolved into the damping glue,and the middle prepreg was prepared with damping film by brushing process.Finally,the damping structure of glass fiber reinforced phenolic resin matrix composite was manufactured by co-curing process according to the scheduled layup sequence.The interlayer bonding performance of composite damping structure was investigated by interlaminar shear test.The curves of interlaminar shear strength with the thickness of the damping layer were obtained.When the damping layer is only 0.1 mm,the maximum shear force is 4647 N,and the interlayer shear strength reaches 7.435 MPa.As the thickness of the damping layer increases,the interlaminar shear strength of the composite structure decreases gradually.The results of modal experiment show that the co-cured composite possesses outstanding damping performance.The experimental results indicate that the damping layer and the constraint layer have excellent interlayer bonding performance.The microstructure of the shear failure surface was analyzed by scanning electron microscope.The work provides a theoretical basis for further application of co-cured damping composites.
作者
郑长升
梁森
Changsheng Zheng;Sen Liang(School of Mechanical and Automotive Engineering,Qingdao University of Technology,Qingdao 266520,China)
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2020年第6期63-69,共7页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目(51375248)
山东省自然科学基金资助项目(ZR201807070249)。
关键词
中温共固化
阻尼复合材料
阻尼薄膜
阻尼层厚度
层间剪切性能
medium-temperature co-cured
damping composites
damping film
thickness of the damping layer
interlayer bonding performance
