Enhancing the mechanical properties of fiber metal laminate by surface treatment

Abstract

AbstractFiber‐metal laminates with high toughness and high strength have become an important direction for the development of new materials in the future. During the production and service process of fiber‐metal laminates, brittle fracture and interlaminate damage are easily caused by low load, which leads to the instability and damage to the overall structure. This article mainly studies the effects of surface treatment process, and material combination on the mechanical properties of glass fiber/polypropylene (PP)/stainless steel mesh (SSM) composite laminates. It is shown that the adhesion force of the phosphating SSM sample is 1.73 times that of the etched sample, and the bonding effect with organic substances is relatively better. The laminate with the structure of “unetched SSM + maleic anhydride grafted polypropylene + aminosilane glass fiber fabric” had the best tensile load. The etched and phosphatized SSM enhanced the interface adhesive effect with PP‐g‐MAH, thereby improving the overall structural strength of the laminate.