C - Chemistry – Metallurgy – 09 – J
Patent
C - Chemistry, Metallurgy
09
J
C09J 175/04 (2006.01) B01F 5/06 (2006.01) B05D 3/12 (2006.01) B29C 65/42 (2006.01) C08G 18/76 (2006.01)
Patent
CA 2206499
A method of filling a seam of a structural panel assembly utilizes a non-foaming, thixotropic, two-component polyurethane elastomeric material. The thixotropic, elastomeric material is prepared by rapidly mixing and initiating the reaction 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. Each of the first and second thixotropic components include from about 3% to 8% by weight 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 material and driving the thixotropic elastomeric material into the seam of the panel assembly. The thixotropic elastomeric material is then allowed to cure in the seam, thereby sealing and reinforcing the seam of the panel assembly.
Méthode pour remplir un joint de panneau en utilisant un polyuréthanne thixotropique non mousseux à deux composants. Le matériau thixotropique élastomérique se prépare en déclenchant une réaction obtenue en mélangeant rapidement un premier composant thixotropique comprenant un composé à terminaison isocyanate possédant au moins deux groupes isocyanates réactifs avec un second composant thixotropique comprenant un composé à terminaison hydroxyle possédant au moins deux groupes hydroxyles réactifs. Chacun des premiers composants thixotropiques contient entre 3 % et 8 % par poids de silice pyrogénée. Le second composant thixotropique contient aussi entre 10 % et 50 % d'agent de remplissage. Le matériau thixotropique élastomérique est appliqué sur le joint d'un panneau. La méthode comporte ensuite la fluidification et l'enfoncement du matériau thixotropique élastomérique dans le joint, ce qui le scelle et renforce le joint.
Hyde-Smith Peter K.
Merser N. Keith
Tanis Rick A.
Finlayson & Singlehurst
Itw Foamseal (a Division Of Paslode Corporation)
LandOfFree
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