Preparation of Fe3O4 magnetic resins and their application to coil joint integrity testing
WANG Hailong
HUO Shengxu
WANG Yue
Abstract：The Fe3O4 magnetic resin is prepared by blending method,and it is built into the joints of waterproofing roll-roof-ing materials,and the stability of the magnetic resin and its feasibility for the integrity detection of the joints of roll-roofing mate-rials are studied.The results show that:the magnetic performance stability of prepared magnetic resin in the normal construction humidity range and under 0～40℃ is better;The built-in magnetic resin has a weak effect on the peeling strength of the water-proof membrane joint and has no effect on the impermeability;Magnetic resin testing technology cannot be applied to waterproof layers overlapped by hot melt or hot welding methods,while waterproof layers overlapped by self-adhesive method have better compatibility with magnetic non-destructive testing technology and can effectively detect leakage points.
Keywords：magnetic resinwaterproofing membrane jointsnon-destructive testingmagnetic field testing
Publication Date：2024-10-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 83-87 )