Methods of applying a rapid cure sealant to an aircraft surface

A method for sealing a surface of an aircraft part, the method comprising the steps of:

• selecting a two component polymer sealant that will cure in less than 24 hours at 75° F. and will be clear upon curing to a peel strength between 0.5 and 35 piw, 90-degree peel back;
• providing a system having a spray tip for combining the two components and immediately emitting from the spray tip an atomized spray comprising the combined components;
• applying to a painted or primed aluminum alloy aircraft part a first course of polymer sealant to a thickness of between 1 and 30 mil;
• applying a subsequent course at room temperature, to the first course, within 2.5 hours or less of applying the first course to a thickness of between 1 and 30 mil;
• wherein the polymer sealant is free of Volatile Organic Components (VOC);
• wherein the polymer sealant passes the 12-second vertical burn test;
• and,
• wherein the polymer sealant is resistant to degradation by Jet A fuel.

A method for sealing a surface of an aircraft part, the method comprising the steps of:

• selecting a two component polymer sealant that will cure in less than 24 hours at 75° F. and will be clear upon curing to a peel strength between 0.5 and 35 piw, 90-degree peel back;
• providing a system having a spray tip for combining the two components and immediately emitting from the spray tip an atomized spray comprising the combined components;
• applying to a painted or primed aluminum alloy aircraft part a first course of polymer sealant to a thickness of between 1 and 30 mil;
• applying a subsequent course at room temperature, to the first course, within 2.5 hours or less of applying the first course to a thickness of between 1 and 30 mil;
• wherein the polymer sealant is free of Volatile Organic Components (VOC);
• wherein the polymer sealant passes the 12-second vertical burn test;
• wherein the polymer sealant is resistant to degradation by Jet A fuel;
• and,
• wherein the system of the providing step includes a cartridge with the two polymer components and a mixing straw.

A method for sealing a surface of an aircraft part, the method comprising the steps of:

• selecting a two component polymer sealant that will cure in less than 24 hours at 75° F. and will be clear upon curing to a peel strength between 0.5 and 35 piw, 90-degree peel back;
• providing a system having a spray tip for combining the two components and immediately emitting from the spray tip an atomized spray comprising the combined components;
• applying to a painted or primed aluminum alloy aircraft part a first course of polymer sealant to a thickness of between 1 and 30 mil;
• and,
• applying a subsequent course at room temperature, to the first course, within 2.5 hours or less of applying the first course to a thickness of between 1 and 30 mil;
• wherein the applying steps are performed at a distance within 6-12″ from the aircraft part, measured from where the atomized spray is emitted;
• further including the step of adjusting an air or fluid flow in the system;
• and,
• further involving the step of adjusting, during the applying steps, a speed of the spray tip as it moves with respect to the aircraft part so as to control the thickness of the polymer sealant.