Polyurethane-based protective coatings for rotor blades
US-2017306177-A1 · Oct 26, 2017 · US
Erosion resistant blade and blade coating
US10336435B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10336435-B2 |
| Application number | US-201415118548-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 14, 2014 |
| Priority date | Feb 14, 2014 |
| Publication date | Jul 2, 2019 |
| Grant date | Jul 2, 2019 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
Airfoil blades are disclosed having a coating thereon that includes a polyurethane, a polysiloxane, and a linking agent that promotes a connection between the polyurethane and the polysiloxane.
First claim
Opening claim text (preview).
The invention claimed is: 1. An airfoil blade having a coating disposed on a leading edge thereof, the coating comprising a polyurethane, a polysiloxane, and a linking agent that promotes a connection between the polyurethane and the polysiloxane; wherein the polyurethane and the polysiloxane are in separate layers with the linking agent disposed between the polyurethane layer and the polysiloxane layer. 2. The airfoil blade of claim 1 , wherein the linking agent is a polyurethane-polysiloxane copolymer. 3. The airfoil blade of claim 1 , wherein the linking agent is a coupling agent comprising functional groups reactive with groups on the polyurethane and functional groups reactive with groups on the polysiloxane. 4. The airfoil blade of claim 3 , wherein the coupling agent is a functionalized particle. 5. The airfoil blade of claim 1 , wherein the linking agent is a layer comprising a polyurethane-polysiloxane copolymer, disposed between the polyurethane layer and the polysiloxane layer. 6. The airfoil blade of claim 1 , wherein the linking agent is a multi-cellular structure disposed between the polyurethane layer and the polysiloxane layer. 7. The airfoil blade of claim 6 , wherein the multi-cellular structure is a polymer foam. 8. The airfoil blade of claim 7 , wherein the polymer foam is a polyurethane foam. 9. The airfoil blade of claim 1 , wherein the airfoil blade is a helicopter rotor blade. 10. The airfoil blade of claim 1 , wherein the airfoil blade further comprises polysiloxane layer on a surface of the airfoil blade away from of the leading edge. 11. An airfoil blade having a coating disposed on a leading edge thereof, the coating comprising a polyurethane, a polysiloxane, and a linking agent that promotes a connection between the polyurethane and the polysiloxane, wherein the coating comprises polyurethane segments and polysiloxane segments in a co-planar configuration in the same layer or planar segment.
Assignees
Inventors
Classifications
containing polyurethane sequences · CPC title
of foam · CPC title
Net structure, e.g. spaced apart filaments bonded at the crossing points · CPC title
of synthetic resin · CPC title
Weather resistant · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US10336435B2 cover?
- Airfoil blades are disclosed having a coating thereon that includes a polyurethane, a polysiloxane, and a linking agent that promotes a connection between the polyurethane and the polysiloxane.
- Who is the assignee on this patent?
- Sikorsky Aircraft Corp
- What technology area does this patent fall under?
- Primary CPC classification B64C11/205. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jul 02 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).