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US 2023/0092373 A1Published application
Multi-Layer Thermoplastic Spray Coating System for High Performance Sealing on Airplanes
AssigneeThe Boeing Company
InventorWeidong Song
Life of this patent
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Abstract
Tunable multi-layer thermoplastic polymer sealants and tunable two-layer conductive thermoplastic polymer sealants, and substrates and assemblies comprising the tunable multi-layer sealants; and edge seals and fillet seals produced comprising such sealants; and substrates, components and objects comprising the tunable edge seals and fillet seals, and methods for making and applying such edge seals and fillet seals are disclosed.
Claims20
A seal for a substrate, said seal comprising a multi-layer sealant, said multi-layer sealant comprising:
- a first thermoplastic polymer layer applied to a substrate, said first thermoplastic polymer layer comprising a first thermoplastic polymer, said first thermoplastic polymer comprising at least one of:
- a thermoplastic co-polyester, a co-polymer of vinylidene fluoride and hexafluoropropylene, a thermoplastic polyurethane, a thermoplastic vulcanizate, a thermoplastic polyolefin elastomer, a styrene block co-polymer, a fluoroelastomer, and combinations thereof;
- a second thermoplastic polymer layer deposited onto said first thermoplastic polymer layer, said second thermoplastic polymer layer comprising a second thermoplastic polymer, said second thermoplastic polymer comprising at least one of:
- a polyether ether ketone, a polyether ketone ketone, a polyamide, a polysulfone, a polyphenylsulfone, a polyetheramide, and combinations thereof;
- wherein the first thermoplastic polymer is different than the second thermoplastic polymer;
- and
- wherein the first thermoplastic polymer layer comprises an adhesion value ranging from about 10 lbs/in to about 30 lbs/in wide area in 90° peel test according to ASTM D6862-11(2016).
4 more elements
A method for forming a seal on a substrate, the method comprising:
- directing a first thermoplastic polymer from a first thermoplastic polymer feedstock to a first high velocity sprayer, said first thermoplastic polymer feedstock comprising at least one of:
- thermoplastic co-polyester, a co-polymer of vinylidene fluoride and hexafluoropropylene, a thermoplastic polyurethane, a thermoplastic vulcanizate, a thermoplastic polyolefin elastomer, a styrene block co-polymer, a fluoroelastomer, and combinations thereof;
- depositing the first thermoplastic polymer from the high velocity sprayer onto a substrate surface;
- forming a first thermoplastic polymer layer on the substrate surface;
- directing a second thermoplastic polymer from a second thermoplastic polymer feedstock to the first high velocity sprayer or a second high velocity sprayer, said second thermoplastic polymer feedstock comprising at least one of:
- a polyether ether ketone, a polyether ketone ketone, a polyamide, a polysulfone, a polyphenylsulfone, a polyetheramide, and combinations thereof;
- depositing the second thermoplastic polymer from the high velocity sprayer onto the first thermoplastic polymer layer;
- forming a second thermoplastic polymer layer on the first thermoplastic polymer layer;
- wherein the first thermoplastic polymer is different than the second thermoplastic polymer;
- and
- wherein the first thermoplastic polymer layer comprises an adhesion value ranging from about 10 lbs/in to about 30 lbs/in wide area in 90° peel test according to ASTM D6862-11(2016).
8 more elements
Dependencies are inferred from the claim text.