METHOD OF FILLING A SEAM OF A PANEL ASSEMBLY USING A THIXOTROPIC POLYURETHANE ELASTOMERIC FILLER ADHESIVE

摘要

A method of filling a seam of a structural panel assembly utilizes a non-foa ming, thixotropic, two-component polyurethane elastomeric material. The thixotropi c, elastomeric material is prepared by rapidly mixing and initiating the reacti on of a first thixotropic component comprising an isocyanate-terminated compound having at least two reactive isocyanate groups and a second thixotropic component comprising a hydroxyl-terminated compound having at least two reactive hydroxyl groups. E ach of the first and second thixotropic components include from about 3% to 8% by w eight fumed silica. The second thixotropic component also includes from about 10% to about 50% filler. The thixotropic elastomeric material is applied over the seam of a panel assembly. The method then includes fluidizing the thixotropic elastomeric ma terial and driving the thixotropic elastomeric material into the seam of the panel asse mbly. The thixotropic elastomeric material is then allowed to cure in the seam, thereb y sealing and reinforcing the seam of the panel assembly.