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US 11,078,386 B2Granted
Additive for quality determination of adhesive bond primers
AssigneeHamilton Sundstrand Corporation
InventorsSean C. Emerson, Blair A. Smith, Weina Li, Georgios S. Zafiris, Bart Antoine Van Hassel
Life of this patent
Estimating the term…
Abstract
A method of adhering a first component to a second component includes priming the first component with an adhesive bond primer containing a primer material, a corrosion inhibitor, and a chemical additive (such as a dye compound), and using an adhesive to attach the second component to the first component through the adhesive bond primer applied on the surface of the second component. The chemical additive allows inspection of the adhesive bond primer with a corresponding radiation source.
Claims17
An assembly comprising:
- a first component;
- a first adhesive bond primer thereon comprising:
- a first primer material;
- a corrosion inhibitor, wherein the corrosion inhibitor comprises:
- a corrosion inhibitive cation selected from the group consisting of zinc, calcium, strontium, magnesium, aluminum, chromium, manganese, rare earth metals, and combinations thereof;
- and
- a corrosion inhibitive anion selected from the group consisting of phosphate, molybdate, vanadate, silicate, tungstate, orthophosphate, and combinations thereof;
- and
- a first chemical additive, wherein the first chemical additive interacts with electromagnetic radiation outside the human visual spectrum to produce an observable emission, wherein the first chemical additive comprises phosphorescent molecules selected from the group consisting of strontium aluminates, lanthanide doped strontium aluminates, manganese doped strontium aluminates, and copper activate zinc sulfide and the dye compound comprises particles up to 10 μm;
- wherein the first adhesive bond primer can be cured between 250° F. and 350° F., and has a wedge crack growth of no more than 0.25 inches as measured by ASTM D3762 (wedge crack extension testing) and a minimum stress at failure of least 440 psi as measured by ASTM D1002 (lap shear testing);
- and
- a second component;
- a second adhesive bond primer thereon comprising:
- a second primer material;
- a corrosion inhibitor, wherein the corrosion inhibitor comprises:
- a corrosion inhibitive cation selected from the group consisting of zinc, calcium, strontium, magnesium, aluminum, chromium, manganese, rare earth metals, and combinations thereof;
- and
- a corrosion inhibitive anion selected from the group consisting of phosphate, molybdate, vanadate, silicate, tungstate, orthophosphate, and combinations thereof;
- and
- a second chemical additive, wherein the second chemical additive interacts with electromagnetic radiation outside the human visual spectrum to produce an observable emission, wherein the second chemical additive comprises phosphorescent molecules selected from the group consisting of strontium aluminates, lanthanide doped strontium aluminates, manganese doped strontium aluminates, and copper activate zinc sulfide and the dye compound comprises particles up to 10 μm;
- wherein the second adhesive bond primer can be cured between 250° F. and 350° F., and has a wedge crack growth of no more than 0.25 inches as measured by ASTM D3762 (wedge crack extension testing) and a minimum stress at failure of least 440 psi as measured by ASTM D1002 (lap shear testing);
- and
- an adhesive adhering the first component to the second component through the first adhesive bond primer and the second adhesive bond primer.
20 more elements
An adhesive bond primer comprising:
- an adhesive primer;
- a corrosion inhibitor, wherein the corrosion inhibitor comprises:
- a corrosion inhibitive cation selected from the group consisting of zinc, calcium, strontium, magnesium, aluminum, chromium, manganese, rare earth metals, and combinations thereof;
- and
- a corrosion inhibitive anion selected from the group consisting of phosphate, molybdate, vanadate, silicate, tungstate, orthophosphate, and combinations thereof;
- and
- a dye compound that interacts with electromagnetic radiation outside the human visual spectrum but not electromagnetic radiation that is within the human visual spectrum to produce an observable emission, wherein the dye compound comprises phosphorescent molecules selected from the group consisting of strontium aluminates, lanthanide doped strontium aluminates, manganese doped strontium aluminates, and copper activate zinc sulfide and the dye compound comprises particles up to 10 μm;
- wherein the adhesive bond primer can be cured between 250° F. and 350° F., and has a wedge crack growth of no more than 0.25 inches as measured by ASTM D3762 (wedge crack extension testing) and a minimum stress at failure of least 440 psi as measured by ASTM D1002 (lap shear testing).
5 more elements
A method of inspecting an adhesive bond of a first component to a second component comprising:
- applying electromagnetic radiation to an adhesive bond primer comprising a primer material, a corrosion inhibitive pigment(s), and a chemical additive that interacts with electromagnetic radiation outside the human visual spectrum but not electromagnetic radiation that is within the human visual spectrum to produce an observable emission,
- wherein the corrosion inhibitive pigment(s) includes a corrosion inhibitor that comprises:
- a corrosion inhibitive cation selected from the group consisting of zinc, calcium, strontium, magnesium, aluminum, chromium, manganese, rare earth metals, and combinations thereof;
- and
- a corrosion inhibitive anion selected from the group consisting of phosphate, molybdate, vanadate, silicate, tungstate, orthophosphate, and combinations thereof;
- and
- a first chemical additive comprises phosphorescent molecules selected from the group consisting of strontium aluminates, lanthanide doped strontium aluminates, manganese doped strontium aluminates, and copper activate zinc sulfide and the dye compound comprises particles up to 10 μm;
- wherein the adhesive bond primer can be cured between 250° F. and 350° F., and has a wedge crack growth of no more than 0.25 inches as measured by ASTM D3762 (wedge crack extension testing) and a minimum stress at failure of least 440 psi as measured by ASTM D1002 (lap shear testing);
- and
- inspecting the integrity of the adhesive bond primer by observing emissions from the chemical additive in response to the electromagnetic radiation.
7 more elements
Dependencies are inferred from the claim text.