三维缝合结构阻尼复合材料制备与性能研究

STUDY ON THE PROPERTIES OF THREE-DIMENSIONAL SEWED SANDWICH STRUCTURAL DAMPING COMPOSITE MATERIAL

通过选用柔性环氧树脂及不同的增强材料,制备三维缝合夹层结构复合材料,得到具备较佳阻尼性能和较高结构强度的复合材料。通过测定三维缝合结构阻尼复合材料的各项性能,得到三维缝合结构的最佳体系为结构层采用环氧树脂复合材料,阻尼层采用芳纶纤维布增强柔性环氧树脂,其阻尼比为3.33%,弯曲模量为14.3GPa,弯曲强度为290MPa,冲击韧性为338k J/m2。

In this article,3-dimensional sewed sandwich composite is made by using flexible epoxy resin and different reinforcing materials,providing better damping performance and higher structural strength. By testing each performance of the 3D sewed sandwich damping composite,it is concluded that： for 3D sewed structure,it is best to use epoxy resin composite for structural layer and aramid fiber reinforced polymer（ AFRP） for damping layer to reinforce the flexible epoxy resin,which provides a damping ratio of 3.33%,bending modulus of 14. 3GPa,bending strength of 290 MPa,and impact toughness of 338 k J / m2.