Coating system for composite material protection

Abstract

The invention relates to a coating system for composite protection. A coating system is presented. A coating system for a composite component includes a light barrier layer configured to prevent transmission of at least one of ultraviolet light or visible light within a desired wavelength and configured to reflect an infrared component of daylight with a colorant.

Description

TECHNICAL FIELD

[0001] The present disclosure relates generally to coatings, and more particularly to a coating system for composite materials. BACKGROUND

[0002] Fiber reinforced composites can be used in platforms including buildings or large vehicles such as aircraft, watercraft, automobiles, trains, and other modes of transportation. The operating environment of vehicles including fiber reinforced composites can cause degradation of the fiber reinforced composites if the fiber reinforced composites are exposed to the operating environment.

[0003] Accordingly, it is desirable to have a method and apparatus that takes into account at least some of the issues discussed above, as well as possibly other issues. In particular, it is desirable to provide a coating system for protecting fiber reinforced composites from operating conditions. SUMMARY

[0004] One embodiment of the present disclosure provides a coating system for a composite part. The coating system includes a light barrier layer configured to prevent transmission of at least one of ultraviolet light or visible light within a desired wavelength and configured to reflect an infrared component of sunlight with a colorant.

[0005] Another embodiment of the present disclosure provides an aircraft. The aircraft includes a composite part and a coating system on the composite part. The coating system includes a light barrier layer configured to block an infrared component of sunlight with titanium dioxide and configured to prevent transmission of at least one of ultraviolet light or visible light within a desired wavelength with a chemical barrier.

[0006] Another embodiment of the present disclosure provides a coating system for a composite part. The coating system includes a light barrier layer configured to provide a desired degree of solar absorption with titanium dioxide and configured to prevent transmission of at least one of ultraviolet light or visible light within a desired wavelength with a chemical barrier. The light barrier layer includes 16 wt% - 41 wt% of titanium dioxide and a chemical barrier.

[0007] These features and functions can be independently implemented in various embodiments of the present disclosure or combined in yet other embodiments, where further details can be found in reference to the following description and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0008] The features of the example embodiments that are believed to be novel are set forth with particularity in the appended claims. The example embodiments, however, together with their preferred methods of use, can be best understood by reference to the following description taken in connection with the accompanying drawings, in which: Figure 1 is an example of an aircraft in accordance with an example embodiment; Figure 2 is an example of a block diagram of a platform with a coating system in an operating environment in accordance with an example embodiment; Figure 3 is an example of a cross-sectional view of a coating system on a composite material in accordance with an example embodiment; Figure 4 is an example of a method of aircraft manufacture and service in the form of a block diagram in accordance with an example embodiment; and; Figure 5 is an example of an aircraft in the form of a block diagram in which example embodiments can be implemented. DETAILED DESCRIPTION

[0009] Example embodiments recognize and take into account that components made of fiber reinforced composites can easily degrade when exposed to a combination of electromagnetic radiation, moisture, and heat. Example embodiments recognize and take into account that it can be desirable to protect fiber reinforced composites from the effects of sunlight components.

[0010] Example embodiments recognize and take into account that it can be desirable to protect fiber reinforced composites without causing undesirable effects on other material properties or operating standards of the corresponding platform. Example embodiments recognize and take into account that aircrafts have several operating standards set by regulatory agencies. In addition, example embodiments also recognize and take into account that it can be undesirable to increase the weight of the aircraft. Example embodiments recognize and take into account that significantly increasing the thickness of the coating can increase the risk of cracking, would increase the weight, and can not satisfy electromagnetic effects (EME) standards of the aircraft.

[0011] Coatings are described herein that have the ability to block the penetration of ultraviolet-visible light at the surface (interior) of the composite material while satisfying the requirements of visible color and solar absorptance (exterior) without an overly thick paint layer, thereby avoiding problems such as cracking, weight, EME, etc.

[0012] Turning now to Figure 1 depicts an example of an aircraft in accordance with an example embodiment. The aircraft 100 has a wing 102 and a wing 104 that are attached to a body 106. The aircraft 100 includes an engine 108 attached to the wing 102 and an engine 110 attached to the wing 104.

[0013] The body 106 has a tail section 112. A horizontal stabilizer 114, a horizontal stabilizer 116, and a vertical stabilizer 118 are attached to the tail section 112 of the body 106.

[0014] Aircraft 100 is one example of an aircraft that can have a coating configured to protect composite materials from ultraviolet or visible light degradation. The coating of the example example can be present on at least one of wing 102, wing 104, body 106, or tail section 112.

[0015] Turning now to Figure 2 , an example of a block diagram of an operating environment according to example embodiments is depicted. Platform 202 is present in operating environment 200 and is exposed to sunlight 216. Platform 202 can take any desired form.

[0016] Coating system 210 provides protection for composite material component 206 of platform 202. Coating system 210 protects composite material component 206 from sunlight 216. Coating system 210 includes light barrier 214, which can be applied as one of a coating, a film, or an ink (layer) on composite material component 206.

[0017] A coating can be, for example, a thin layer or covering, which can be, for example, a liquid, a fluid, a continuum, or can be a material that is free-flowing and has a constant volume. Examples of coatings described herein include paints, primers, topcoats, and the like, and combinations thereof.

[0018] A film can be, for example, a thin material covering in a solid or semi-solid state, and in some embodiments can be flexible. Examples of films described herein include decals, stickers, wraps, and the like.

[0019] An ink is a colored liquid or fluid used for writing, drawing, printing, and the like. Examples include solid, liquid, hybrid, and similar inks, and combinations thereof.

[0020] Light barrier 214 is exposed to operating environment 200. As such, sunlight 216 impinges on light barrier 214.

[0021] Light barrier 214 includes at least one of an epoxy, an acrylic, a polyurethane 238, a polyamide, a modified rosin, a hydrocarbon resin, or a modified cellulose. In some example examples, light barrier 214 includes an epoxy or a polyurethane 238. In some example examples, light barrier 214 includes a polyurethane 238. In some example examples, light barrier 214 includes a polyurethane 238 with titanium dioxide 240.

[0022] Composite material component 206 includes a fiber-reinforced matrix material. In some example examples, the fiber-reinforced material includes carbon fibers, boron fibers, glass fibers, polyester fibers, aramid fibers (such as, for example, Kevlar® ), polymeric fibers, or other desired reinforcing fibers. In some example embodiments, the composite part 206 includes at least one of polyester, vinyl ester, cyanate ester, bismaleimide, polyetherimide, polyphenylene sulfide, polyaryletherketone (including PEEK and PEKK), a thermoset material (such as an epoxy material), or nylon. In some example embodiments, the epoxy composite includes at least one of a phenol novolac epoxy resin, an aromatic epoxy resin, an aliphatic epoxy resin, or a cyclic epoxy resin. In some example embodiments, the composite part 206 includes a thermoset resin.

[0023] Currently, epoxy resin systems can incorporate a multifunctional epoxy system with a difunctional epoxy system to obtain a polymer matrix with both improved tensile strength and compression-after-impact (CAI) after impact. The difunctional epoxy resin can be saturated, unsaturated, cycloaliphatic, aromatic, alicyclic, or heterocyclic. Examples of the difunctional epoxy resin can be those based on diglycidyl ether or bisphenol F, bisphenol A, phenol and cresol epoxy novolacs, glycidyl ethers of phenol-aldehyde adducts, glycidyl ethers of aliphatic diols, diglycidyl ethers, diethylene glycol diglycidyl ether, aromatic epoxy resins, aliphatic polyglycidyl ethers, epoxidized olefins, aromatic glycidyl amines, heterocyclic glycidyl imines and amides, glycidyl ethers, or any combination thereof. A preferred difunctional epoxy resin can be from diglycidyl ether of bisphenol F, diglycidyl ether of bisphenol A, diglycidyl dihydroxynaphthalene, or any combination thereof.

[0024] In some example embodiments, the composite part 206 includes one of a thermoset resin, an epoxy resin, or a thermoplastic resin. In some example embodiments, the composite part 206 includes a carbon fiber reinforced composite 254. In some example embodiments, the composite part 206 includes a glass fiber reinforced composite 252. The composite part 206 can be formed using any desired method. In some example embodiments, the composite part 206 can be formed by resin infusion, wet layup, or resin sweep.

[0025] The surface 208 is an outer surface of the composite part 206. In some example embodiments, the light barrier layer 214 is in contact with the surface 208 of the composite part 206. In some example embodiments, a surface film or a primer layer is present between the surface 208 and the light barrier layer 214.

[0026] In some example instances, the light barrier layer 214 is an outer surface of the platform 202. In some example instances, the light barrier layer 214 has a desired external color 242 of the performance. In some example instances, the light barrier layer 214 is white 244 or gray 246. In some example instances, the light barrier layer 214 has a desired external color of the performance that can be selected from white 244, gray 246, beige, off-white, or any other desired color. In some example instances, the light barrier layer 214 provides thermal control 236 to the coating system 210 through a controlled solar absorptance 248. The solar absorptance 248 can be evaluated using any desired standard set forth by a materials or governing association, such as the American Society for Testing and Materials. In some example instances, the solar absorptance 248 can be evaluated using ASTM E903-20.

[0027] In some example instances, the light barrier layer 214 provides a solar absorptance 248 in a range of 0.20-0.67. In some example instances, the light barrier layer 214 provides a solar absorptance 248 in a range of 0.20 to 0.67, or 0.23 to 0.67, or 0.23 to 0.53. In some example instances, the light barrier layer 214 provides a solar absorptance 248 in a range of 0.21-0.23. In some example instances, the light barrier layer 214 provides a solar absorptance 248 in a range of 0.58-0.67.

[0028] The light barrier layer 214 includes a chemical barrier 224. In some example instances, the chemical barrier 224 includes at least one of a benzotriazole 226, a triazine 228, or a benzophenone 230. In some example instances, the content and specific type of chemical barrier in the chemical barrier 224 is configured to block transmission of at least one of ultraviolet light 217 or visible light 218 within a desired wavelength 234. The chemical barrier 224 is present in the light barrier layer 214 in any desired weight range to prevent transmission of at least one of ultraviolet light 217 or visible light 218. The weight percentages demonstrated herein are calculated as a dry weight percentage.

[0029] In some example instances, the light barrier layer 214 blocks transmission of at least one of ultraviolet light 217 or visible light 218 through absorption. In some example instances, the desired wavelength 234 is in a range of 300-550 nm. In some example instances, the desired wavelength 234 is in a range of 300-500 nm. In some example instances, the desired wavelength 234 is in a range of 300-800 nm.

[0030] In some example embodiments, the light barrier layer 214 includes a colorant 225. In some example embodiments, the light barrier layer 214 further includes a colorant 225 having a light color. In some example embodiments, the light barrier layer 214 is a light color (e.g., white) and has a low degree of solar absorption. In some example embodiments, the light barrier layer 214 includes a white colorant 225 in a range of 16 wt% - 41 wt% of titanium dioxide 240 (also known as titania or Ti02) in rutile or anatase form, antimony white, zinc white, silica, or the like. In some example embodiments, the light barrier layer 214 includes titanium dioxide 240 in a range of 20 wt% - 41 wt%. In some example embodiments, the light barrier layer 214 includes titanium dioxide 240 in a range of 16 wt% - 21 wt%.

[0031] In some example embodiments, the coating system 210 for the composite part 206 includes a light barrier layer 214 configured to prevent transmission of at least one of ultraviolet light 217 or visible light 218 within a desired wavelength 234 and includes a chemical barrier 224 including at least one of a benzotriazole 226, a triazine 228, or a benzophenone 230. In some example embodiments, the light barrier layer 214 is configured to provide a desired degree of solar absorption 248 and includes 16 wt% - 41 wt% of titanium dioxide.

[0032] The thickness 250 of the light barrier layer 214 is selected to provide a desired amount of barrier to at least one of ultraviolet light 217 or visible light 218. The thickness can be measured using any desired standard set forth by a materials or management association, such as the American Society for Testing and Materials. In some example embodiments, the thickness 250 can be evaluated using ASTM D4138-22.

[0033] The thickness 250 of the light barrier layer 214 and the particular colorant 225 are selected to provide a reflection of the infrared component 220 of sunlight 216. The thickness 250 of the light barrier layer 214 is selected to provide a desired material property for the coating system 210. In some example embodiments, the thickness 250 is selected based on at least one of a desired weight, a desired EME performance, and a desired flexibility performance of the coating system 210. In some example embodiments, the thickness 250 is selected based on a location of the coating system 210 on the platform 202. In some example embodiments, the thickness 250 can be selected according to the operating environment 200. In some example embodiments, the light barrier layer 214 includes a thickness 250 between 1.0 - 4.0 mils.

[0034] In some example instances, the platform 202 takes the form of an aircraft 204. In these example instances, the aircraft 204 includes a composite material component 206 and a coating system 210 on the composite material component 206. The coating system 210 includes a light barrier layer 214 that includes a chemical barrier 224 configured to prevent transmission of at least one of ultraviolet light 217 or visible light 218 within a desired wavelength 234, and the light barrier layer 214 is configured to reflect an infrared component 220 of sunlight 216. In some example instances, the light barrier layer 214 includes a polyurethane 238 or an epoxy resin having the chemical barrier 224. In some example instances, the light barrier layer 214 further includes a titanium dioxide 240.

[0035] The composite material component 206 can take the form of any desired component or portion of a component of the platform 202. In some example instances, the composite material component 206 is a portion of a tail section 256 of the aircraft 204. In some example instances, the composite material component 206 is a horizontal stabilizer 260. In some example instances, the horizontal stabilizer 260 can take the form of the horizontal stabilizer 116 of Figure 1 In some example instances, the composite material component 206 is an elevator 258 in the tail section 256 of the aircraft 204. In some example instances, the composite material component 206 is a wing 262 of the aircraft 204. In some example instances, the composite material component 206 is a fuselage 264 of the aircraft 204. In some example instances, the composite material component 206 is one of the fuselage 264, the wing 262, or a portion of the tail section 256 of the aircraft 204.

[0036] In some example instances, an outer transparent coating 215 is present in the coating system 210. The outer transparent coating 215 is in contact with the light barrier layer 214. The outer transparent coating 215 is an optional layer that is not present in some example instances. The outer transparent coating 215 can provide additional protection to the light barrier layer 214 from undesirable abrasion.

[0037] Figure 2 The coating system 210 can be applied by at least one of spraying, inkjet printing, spreading, rolling, or any other desired application method. The light barrier layer 214 can be applied to the composite material component 206 in a liquid form. In some example instances, the light barrier layer 214 can be co-cured with the composite material component 206.

[0038] Figure 2The example of the operating environment 200 in FIG. 2 is not intended to suggest physical or architectural limitations to the manner in which example embodiments can be implemented. Other components can be used in addition to or in place of the components illustrated. Some components can be unnecessary. Also, the blocks are presented to provide some examples of the functionality of the example embodiments. One or more of the blocks can be combined, divided, or combined and subdivided into different blocks when implemented in example embodiments. For example, a surface film or primer can exist between the surface 208 and the light barrier 214.

[0039] Turning now to Figure 3 , an example of a cross-sectional view of a coating system on a composite material is depicted in accordance with example embodiments. The composite material component 302 is a physical implementation of the composite material component 206. Figure 2 The coating system 304 is present on the composite material component 302. The coating system 304 protects the composite material component 302 from degradation due to sunlight exposure. The coating system 304 is a physical implementation of the coating system 210. Figure 2 The view 300 is a cross-sectional view of the coating system 304 on the composite material component 302.

[0040] The coating system 304 includes a light barrier 306. In this example instance, the light barrier 306 is in contact with the composite material component 302. In some unillustrated instances, a surface film or primer can exist between the composite material component 302 and the light barrier 306. In some example instances, the light barrier 306 is bonded to the composite material component 302.

[0041] In this example instance, the light barrier 306 is configured to prevent transmission of at least one of ultraviolet light or visible light within a desired wavelength and is configured to reflect an infrared component of sunlight with a colorant.

[0042] In some example instances, the light barrier 306 includes a chemical barrier configured to prevent transmission of at least one of ultraviolet light or visible light within a desired wavelength.

[0043] In some example instances, the light barrier 306 is configured to provide a desired degree of solar energy absorption with a colorant. In some example instances, the light barrier 306 is configured to provide a desired degree of solar energy absorption with titanium dioxide and is configured to prevent transmission of at least one of ultraviolet light or visible light within a desired wavelength with a chemical barrier. In some example instances, the light barrier 306 includes 16 wt% - 41 wt% titanium dioxide, and a chemical barrier.

[0044] The light barrier layer 306 protects the composite part 302 from at least one of ultraviolet light or visible light within a desired wavelength. The light barrier layer 306 includes a chemical barrier. The chemical barrier is configured to prevent transmission of at least one of ultraviolet light or visible light within a desired wavelength. In some example instances, the chemical barrier includes at least one of a benzotriazole, a triazine, or a benzophenone.

[0045] The light barrier layer 306 prevents or substantially reduces transmission of at least one of ultraviolet light or visible light within a desired wavelength. The light barrier layer 306 at least one of absorbs or reflects at least one of ultraviolet light or visible light within a desired wavelength. The light barrier layer 306 provides a desired barrier property to the desired wavelength. In some example instances, the light barrier layer 306 provides protection to the composite part 302 by absorption.

[0046] The light barrier layer 306 provides thermal protection to the composite part 302. The light barrier layer 306 also provides protection against at least one of ultraviolet light or visible light. In some example instances, the light barrier layer 306 provides protection against the infrared component of sunlight with solar absorption.

[0047] In some example instances, the light barrier layer 306 is white. In some other example instances, the light barrier layer 306 is gray. In some example instances, the light barrier layer 306 has a desired external color of performance that can be selected from white, gray, beige, off-white, or any other desired color.

[0048] The composite part 302 with the coating system 304 resists degradation from cyclic exposure to at least one of ultraviolet light or visible light and moisture. The composite part 302 with the coating system 304 meets desired standards of solar absorption, color, and crack resistance. The light barrier layer 306 has a thickness 310 configured to at least one of selectively absorb or reflect solar radiation of a particular wavelength while meeting other desired coating characteristics. In some example instances, the coating system 304 meets desired standards of corrosion resistance.

[0049] In this example instance, an outer clear coat 308 is present in the coating system 304. The outer clear coat 308 is in contact with the light barrier layer 306. The outer clear coat 308 is optional in some example instances. The outer clear coat 308 can provide additional protection to the light barrier layer 306 from undesirable abrasion.

[0050] As used herein, the phrase "at least one", in conjunction with a listing of items, means that different combinations of one or more of the listed items are acceptable and that only one of each item in the list can be required. For example, "at least one of item A, item B, or item C" can include, but is not limited to, just A; A and B; B and C; or A, B, and C. This example also can include A, B, C, or a combination of items A, B, and C. Of course, any combination of these items can be present. In other examples, "at least one" can be, for example, but not limited to, two items A; one item B; and ten items C; four items B and seven items C; or other suitable combinations. The items can be specific objects, things, or categories. In other words, at least one means that any combination of the items in the list and the number of items can be used, not requiring all items in the list.

[0051] As used herein, "a number of", when used with respect to items, means one or more items.

[0052] The flow and block diagrams in the various drawing implementations illustrate schematically the architecture, functionality, and operations of some possible implementations of apparatuses and methods in example implementations. In this regard, each block in the flow or block diagrams can represent at least one of a module, segment, function, or portion of an operation or step.

[0053] In some alternative implementations of example implementations, the order of one or more of the functions noted in the blocks can occur in a different order. For example, in some cases, two blocks that are displayed in succession can be executed substantially concurrently, or these blocks can sometimes be executed in reverse order according to the functionality involved. Also, other blocks can be added to the flow or block diagrams, or some blocks can be deleted from the flow or block diagrams. In some cases, some of the blocks noted in the flow or block diagrams can be optional.

[0054] Example implementations of the disclosure can be described in the Figure 4 environment of the aircraft manufacturing and service method 400 shown Figure 5 and the aircraft 500 shown. At first glance, the example Figure 4 depicts an example of an aircraft manufacturing and service method in block form according to an example implementation. During pre-production, aircraft manufacturing and service method 400 can include specification and design 402 of the aircraft 500 and material procurement 404. Figure 5 During production, component and subassembly manufacturing, and system integration 406 of the aircraft 500 can take place. Thereafter, aircraft 500 can go through certification and delivery 408 in order to be placed in service 410. While in service by a customer, the aircraft 500 is scheduled for routine maintenance and service 412, which can include modification, reconfiguration, refurbishment, and / or the like.

[0055] During production, the manufacturing of components and sub-components of the aircraft 500 is carried out 406, and system integration is performed 408. Afterward, the aircraft 500 can be certified and delivered 410 for service 412. When service 412 is provided to the customer, the aircraft 500 is scheduled for routine maintenance and servicing 414, which may include modifications, reconfigurations, refurbishments, or other maintenance and servicing.

[0056] The processes of the aircraft manufacturing and servicing method 400 may be performed or implemented by a system integrator, a third party, and / or an operator. In these instances, the operator may be the customer. For illustrative purposes, the system integrator may include, but is not limited to, any number of aircraft manufacturers and main system subcontractors; the third party may include, but is not limited to, any number of sellers, subcontractors, and suppliers; and the operator may be an airline, leasing company, military entity, service organization, etc.

[0057] For reference Figure 5 This illustrates an example of an aircraft in block diagram form, where exemplary implementations can be carried out. In this example, aircraft 500... Figure 4 The aircraft manufacturing and servicing method 400 produces and may include a fuselage 502 having multiple systems 504 and an interior 506. Examples of systems 504 include one or more of a propulsion system 508, an electrical system 510, a hydraulic system 512, and an environmental system 514. Any number of other systems may be included.

[0058] The equipment and methods implemented herein may be employed during at least one stage of the aircraft manufacturing and servicing method 400. One or more exemplary embodiments may be available. Figure 4 The parts and sub-components are manufactured or used during at least one of the following processes: manufacturing 406, system integration 408, service 412, or maintenance and service 414.

[0059] Exemplary examples illustrate coating systems for protecting composite material components. The coating system protects the composite material components from cyclic exposure to at least one of ultraviolet or visible light and from degradation caused by moisture, while meeting standards for solar absorptivity, color, and crack resistance. Layers (volumes) are arranged in a specific order and at a specific thickness within the coating system to selectively absorb and / or reflect solar radiation of specific wavelengths, while also meeting other objective standards.

[0060] The description of the different example embodiments is presented for purposes of illustration and description and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. Moreover, different example embodiments can provide different features to those of other example embodiments. One or more embodiments were chosen and described in order to best explain the principles of the embodiments, the practical application, and to enable others skilled in the art to understand the disclosure for various embodiments with various modifications as are suited to the particular application contemplated.

[0061] Example recitations 1. A coating system (210, 304) for a composite part (206, 302), comprising: a light barrier layer (214, 306) configured to prevent transmission of at least one of ultraviolet light (217) or visible light (218) within a desired wavelength (234) and configured to reflect an infrared component (220) of sunlight (216) with a colorant (225).

[0062] 2. The coating system (210, 304) of example 1, wherein the light barrier layer (214, 306) is incorporated into the composite part (206, 302).

[0063] 3. The coating system (210, 304) of example 1, wherein the light barrier layer (214, 306) has a desired external color (242) of performance.

[0064] 4. The coating system (210, 304) of example 1, wherein the light barrier layer (214, 306) is white (244) or gray (246).

[0065] 5. The coating system (210, 304) of example 1, wherein the light barrier layer (214, 306) includes a chemical barrier (224) configured to prevent transmission of at least one of the ultraviolet light (217) or visible light (218) within the desired wavelength (234).

[0066] 6. The coating system (210, 304) of example 5, wherein the chemical barrier (224) includes at least one of a benzotriazole (226), a triazine (228), or a benzophenone (230).

[0067] 7. The coating system (210, 304) of Example 1, wherein the colorant (225) comprises titanium dioxide (240), and wherein the light barrier layer (214, 306) comprises titanium dioxide (240) in a range of 16-41 wt%.

[0068] 8. The coating system (210, 304) of Example 1, wherein the light barrier layer (214, 306) comprises a thickness (250, 310) of between 1.0-4.0 mils.

[0069] 9. The coating system (210, 304) of Example 1, wherein the light barrier layer (214, 306) provides thermal control (236) for the coating system (210, 304) through a controlled degree of solar absorption (248).

[0070] 10. The coating system (210, 304) of Example 1, wherein the light barrier layer (214, 306) provides a degree of solar absorption (248) in a range of 0.20-0.67.

[0071] 11. The coating system (210, 304) of Example 1, wherein the desired wavelength (234) is in a range of 300-550 nm.

[0072] 12. The coating system (210, 304) of Example 1, further comprising: an outer clear coat (215, 308) in contact with the light barrier layer (214, 306).

[0073] 13. An aircraft (100, 204, 500) comprising: a composite material component (206, 302); and a coating system (210, 304) on the composite material component (206, 302), the coating system (210, 304) comprising: a light barrier layer (214, 306) configured to reflect an infrared component (220) of sunlight (216) with titanium dioxide (240) and configured to prevent transmission of at least one of ultraviolet light (217) or visible light (218) within a desired wavelength (234) with a chemical barrier (224).

[0074] 14. The aircraft (100, 204, 500) of Example 13, wherein the composite material component (206, 302) comprises a carbon fiber reinforced composite material.

[0075] 15. The aircraft (100, 204, 500) of Example 13, wherein the composite material part (206, 302) comprises a glass fiber reinforced composite material.

[0076] 16. The aircraft (100, 204, 500) of Example 13, wherein the composite material part (206, 302) is a wing (102, 104, 262).

[0077] 17. The aircraft (100, 204, 500) of Example 13, wherein the composite material part (206, 302) is part of a tail section (112, 256) of the aircraft (100, 204, 500).

[0078] 18. The aircraft (100, 204, 500) of Example 13, wherein the composite material part (206, 302) is a fuselage (264).

[0079] 19. The aircraft (100, 204, 500) of Example 13, wherein the composite material part (206, 302) is one of: a fuselage (264), a wing (102, 104, 262), or part of a tail section (112, 256) of the aircraft (100, 204, 500).

[0080] 20. The aircraft (100, 204, 500) of Example 13, wherein the desired wavelength (234) is in a range of 300-550 nm.

[0081] 21. The aircraft (100, 204, 500) of Example 13, wherein the desired wavelength (234) is in a range of 300-800 nm.

[0082] 22. The aircraft (100, 204, 500) of Example 13, wherein the composite material part (206, 302) comprises a thermoset resin.

[0083] 23. The aircraft (100, 204, 500) of Example 13, wherein the composite material part (206, 302) comprises an epoxy resin.

[0084] 24. The aircraft (100, 204, 500) of Example 13, wherein the composite material part (206, 302) comprises at least one of carbon fibers, boron fibers, glass fibers, polyester fibers, polymeric fibers, or aramid fibers.

[0085] 25. The coating system (210, 304) of Example 13, wherein the chemical barrier (224) comprises at least one of a benzotriazole (226), a triazine (228), or a benzophenone (230).

[0086] 26. A coating system (210, 304) for a composite material part (206, 302) comprising: a light barrier layer (214, 306) configured to provide a desired degree of solar absorption (248) with titanium dioxide (240) and configured to prevent transmission of at least one of ultraviolet light (217) or visible light (218) within a desired wavelength (234) with a chemical barrier (224), the light barrier layer (214, 306) comprising 16 - 41 wt% of titanium dioxide (240) and the chemical barrier (224).

[0087] 27. The coating system (210, 304) of Example 26, wherein the desired wavelength (234) is in the range of 300-550 nm.

[0088] 28. The coating system (210, 304) of Example 26, wherein the desired wavelength (234) is in the range of 300-800 nm.

Claims

1. A coating system (210, 304) for composite material parts (206, 302), comprising: A light-blocking layer (214, 306) is configured to prevent transmission of at least one of ultraviolet light (217) or visible light (218) within a desired wavelength (234) and is configured to reflect the infrared component (220) of sunlight (216) using a colorant (225).

2. The coating system (210, 304) according to claim 1, wherein the light blocking layer (214, 306) is bonded to the composite material component (206, 302).

3. The coating system (210, 304) according to claim 1, wherein the light blocking layer (214, 306) has a desired external color (242).

4. The coating system (210, 304) according to claim 1, wherein the light blocking layer (214, 306) is white (244) or gray (246).

5. The coating system (210, 304) according to claim 1, wherein the light blocking layer (214, 306) comprises a chemical blocking agent (224) configured to prevent transmission of at least one of the ultraviolet light (217) or visible light (218) within the desired wavelength (234).

6. The coating system (210, 304) according to claim 5, wherein the chemical barrier agent (224) comprises at least one of benzotriazole (226), triazine (228) or benzophenone (230).

7. The coating system (210, 304) according to claim 1, wherein the colorant (225) comprises titanium dioxide (240), and wherein the light blocking layer (214, 306) comprises titanium dioxide (240) in the range of 16-41 wt%.

8. The coating system (210, 304) according to claim 1, wherein the light blocking layer (214, 306) comprises a thickness (250, 310) between 1.0 and 4.0 mils.

9. The coating system (210, 304) according to claim 1, wherein the light blocking layer (214, 306) provides thermal control (236) for the coating system (210, 304) through controlled solar absorptivity (248).

10. The coating system (210, 304) according to claim 1, wherein the light blocking layer (214, 306) provides a solar energy absorption (248) in the range of 0.20-0.67.

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