Airborne lamp special-shaped curved surface transparent lampshade manufacturing method and invisible lampshade manufactured through airborne lamp special-shaped curved surface transparent lampshade manufacturing method

Abstract

The invention discloses a preparation method of a special-shaped curved surface transparent lampshade of an airborne lamp and a prepared invisible lampshade. The preparation method comprises the following steps: S1, attaching a polyurethane solution to a PC board by adopting a coating process to obtain a composite layer about the PC board and a polyurethane layer; s2, attaching a silver nanowire conductive solution to the composite layer related to the PC board and the polyurethane layer by adopting a coating process to obtain a composite layer related to the PC board, the polyurethane layer and a silver nanowire conductive layer; s3, attaching polyurethane modified acrylic resin to the composite layer related to the PC board, the polyurethane layer and the silver nanowire conductive layer by adopting a coating process to obtain a composite layer related to the PC board, the polyurethane layer, the silver nanowire conductive layer and the polyurethane modified acrylic resin layer; and S4, the lampshade is placed in a mold to be subjected to hot press molding, and a finished lampshade product is obtained. The manufacturing method has the beneficial effects that the special-shaped curved surface transparent invisible lampshade of the airborne lamp can be manufactured, and the electromagnetic shielding effectiveness of the lampshade is larger than or equal to 20 dB.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of airborne lamps, in particular, a preparation method of an airborne lamp profiled curved transparent lampshade and a stealth lampshade prepared by the method. BACKGROUND

[0002] Currently, the profiled curved transparent lampshade adopts a metal mesh grid composed of ITO or silver and copper as a stealth film. The disadvantage of ITO is that ITO is a ceramic material, has ceramic brittleness, is easy to bend and crack, does not have stretchability, and has a shedding problem. The disadvantage of the metal mesh grid is that the application conditions are many and the process cost is high. SUMMARY

[0003] The purpose of the present application is to provide a novel preparation method of an airborne lamp profiled curved transparent lampshade and a stealth lampshade prepared by the method.

[0004] In order to achieve the above-mentioned purpose, one technical solution of the present application is as follows: a preparation method of an airborne lamp profiled curved transparent lampshade, comprising:

[0005] Step S1: using a coating process, polyurethane solution is attached to a PC plate to obtain a composite layer about the PC plate and the polyurethane layer;

[0006] Step S2: using a coating process, silver nanowire conductive solution is attached to the composite layer about the PC plate and the polyurethane layer to obtain a composite layer about the PC plate, the polyurethane layer and the silver nanowire conductive layer;

[0007] Step S3: using a coating process, polyurethane modified acrylic resin is attached to the composite layer about the PC plate, the polyurethane layer and the silver nanowire conductive layer to obtain a composite layer about the PC plate, the polyurethane layer, the silver nanowire conductive layer and the polyurethane modified acrylic resin layer; and,

[0008] Step S4: the composite layer about the PC plate, the polyurethane layer, the silver nanowire conductive layer and the polyurethane modified acrylic resin layer is placed in a mold for hot pressing to obtain a finished lampshade.

[0009] As a preferred scheme of the preparation method of the airborne lamp profiled curved transparent lampshade, in step S1, the thickness of the polyurethane layer is 0.5-5 μm.

[0010] As a preferred scheme of the preparation method of the airborne lamp profiled curved transparent lampshade, in step S2, the thickness of the silver nanowire conductive layer is 0.5-3 μm.

[0011] As a preferred scheme of the preparation method of the airborne lamp profiled curved transparent lampshade, in step S3, the thickness of the polyurethane modified acrylic resin layer is 2-30 μm.

[0012] As a preferred scheme of the preparation method of the special-shaped curved transparent lampshade of the airborne lamp, in steps S1 to S3, the coating process is selected from any one or a combination of two or more of slot coating, Meyer rod coating, spraying, spin coating or microwave coating.

[0013] As a preferred scheme of the preparation method of the special-shaped curved transparent lampshade of the airborne lamp, in step S4, the process parameters of the hot pressing forming can be selected as a hot pressing temperature of 160-180 DEG C, a forming pressure of 5-8 Mpa and a forming time of 15-20 min; preferably, the hot pressing temperature is 120-200 DEG C, the forming pressure is 2-10 Mpa, and the forming time is 5-20 min.

[0014] As a preferred scheme of the preparation method of the special-shaped curved transparent lampshade of the airborne lamp, in step S4, the mold is selected as a special-shaped curved mold.

[0015] As a preferred scheme of the preparation method of the special-shaped curved transparent lampshade of the airborne lamp, in step S4, the inner surface of the curved mold is coated after fine polishing.

[0016] Another technical solution of the present application is as follows: a special-shaped curved transparent stealth lampshade of the airborne lamp prepared by the preparation method.

[0017] Compared with the prior art, the technical effect of the present application is at least: the preparation method can prepare the special-shaped curved transparent lampshade of the airborne lamp, the electromagnetic shielding effectiveness of the lampshade is greater than or equal to 20 dB, has excellent stealth performance and the method is simple and efficient, and can be suitable for multi-variety and small-batch operation of aviation airborne products. Based on the flexible characteristics of the silver nanowire conductive layer, the conductive film of the prepared special-shaped curved transparent lampshade of the airborne lamp does not have the problem of falling off. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a method flowchart of an embodiment of the present application.

[0019] Figure 2 is a hot pressing schematic diagram (before hot pressing forming) of an embodiment of the present application.

[0020] Figure 3 is a hot pressing schematic diagram (after hot pressing forming) of an embodiment of the present application. DETAILED DESCRIPTION

[0021] The present application will be further described in detail below with specific embodiments combined with the drawings. It should be noted that the description of these embodiments is used to help understand the present application, but does not constitute a limitation on the present application. In addition, the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0022] Referring to Figure 1 The embodiment provides a preparation method of an aircraft lamp special-shaped curved surface transparent lampshade. The preparation method of the aircraft lamp special-shaped curved surface transparent lampshade comprises the following steps:

[0023] Step S1: a polyurethane solution is attached to a PC plate by using a coating process to obtain a composite layer of the PC plate and the polyurethane layer. The thickness of the PC plate is 2 mm, and the thickness of the polyurethane layer is 2 μm. The PC plate is at the bottom, and the polyurethane layer is at the top.

[0024] Step S2: a silver nanowire conductive solution is attached to the composite layer of the PC plate and the polyurethane layer by using a coating process to obtain a composite layer of the PC plate, the polyurethane layer and the silver nanowire conductive layer. The thickness of the silver nanowire conductive layer is 0.5 μm. The PC plate is at the bottom, the polyurethane layer is in the middle, and the silver nanowire conductive layer is at the top.

[0025] Step S3: a polyurethane modified acrylic resin is attached to the composite layer of the PC plate, the polyurethane layer and the silver nanowire conductive layer by using a coating process to obtain a composite layer of the PC plate, the polyurethane layer, the silver nanowire conductive layer and the polyurethane modified acrylic resin layer. The thickness of the polyurethane modified acrylic resin layer is 20 μm. The PC plate is at the bottom, the polyurethane layer is in the middle, the silver nanowire conductive layer is at the second top, and the polyurethane modified acrylic resin layer is at the top.

[0026] Step S4: the composite layer of the PC plate, the polyurethane layer, the silver nanowire conductive layer and the polyurethane modified acrylic resin layer is placed in a mold for hot pressing to obtain a lampshade product. A small-curvature special-shaped curved surface mold can be selected for the curved mold to obtain a small-curvature transparent arc-shaped lampshade. The inner surface of the curved mold can be finely polished and then subjected to a film coating treatment. The process parameters of the hot pressing can be selected as follows: the hot pressing temperature is 160-180 ℃, the forming pressure is 5-8 MPa, and the forming time is 15-20 min. Preferably, the hot pressing temperature is 120-200 ℃, the forming pressure is 2-10 MPa, and the forming time is 5-20 min.

[0027] In the figure, the serial numbers are as follows: an upper mold 1 (which can be heated), a lower mold 2 (which can be heated), a male mold plug 3, a vacuum adsorption space 4, a silver nanowire conductive layer 5, a PC plate 6, a vacuum pump 7, a fixing frame 8 and a lampshade product 9.

[0028] Table 1 shows the performance results of the lampshade product.

[0029] Material L a b Transmittance (%) Surface resistance (Ω / sq) Before hot pressing 87.28 -0.45 9.62 69.93 8-10 After hot pressing 84.22 -0.43 10.00 67.1 10

[0030] The test results show that the lampshade product can be used for military navigation lights, anti-collision lights or navigation and anti-collision lights.

[0031] The coating process in steps S1 to S3 can use one or more of slot coating, Meyer bar coating, spraying, spin coating or microwave coating.

[0032] The above merely expresses the embodiments of the present application, which are described in more detail and in more detail, but cannot be understood as limiting the scope of the patent. It should be noted that for those skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are within the scope of the present application. Therefore, the scope of protection of the present application patent should be subject to the appended claims.

Claims

1. A method for manufacturing an irregularly shaped curved transparent lampshade for an airborne lighting fixture, characterized in that, include: Step S1: Using a coating process, a polyurethane solution is adhered to the PC board to obtain a composite layer of the PC board and the polyurethane layer. Step S2: Using a coating process, the silver nanowire conductive solution is attached to the composite layer of the PC board and the polyurethane layer to obtain the composite layer of the PC board, the polyurethane layer and the silver nanowire conductive layer. Step S3: Using a coating process, polyurethane-modified acrylic resin is adhered to a composite layer consisting of a PC board, a polyurethane layer, and a silver nanowire conductive layer, resulting in a composite layer consisting of a PC board, a polyurethane layer, a silver nanowire conductive layer, and a polyurethane-modified acrylic resin layer; and, Step S4: Place the composite layer of PC board, polyurethane layer, silver nanowire conductive layer and polyurethane modified acrylic resin layer in a mold and hot press to form the finished lampshade.

2. The method for preparing the irregularly shaped curved transparent lampshade for airborne lighting fixtures according to claim 1, characterized in that, In step S1, the thickness of the polyurethane layer is 0.5-5 μm.

3. The method for preparing the irregular curved transparent lampshade of the airborne lamp according to claim 1, characterized in that, In step S2, the thickness of the silver nanowire conductive layer is 0.5-3 μm.

4. The method for preparing the irregularly shaped curved transparent lampshade for airborne lighting fixtures according to claim 1, characterized in that, In step S3, the thickness of the polyurethane-modified acrylic resin layer is 2-30 μm.

5. The method for preparing the irregularly shaped curved transparent lampshade of the airborne lighting fixture according to claim 1, characterized in that, In steps S1 to S3, the coating process may be any one or a combination of two or more of the following: slot coating, Mayer rod coating, spraying, spin coating, or microwave coating.

6. The method for preparing the irregular curved transparent lampshade of the airborne lamp according to claim 1, characterized in that, In step S4, the hot pressing process parameters can be selected as follows: hot pressing temperature of 160-180℃, molding pressure of 5-8 MPa, and molding time of 15-20 min; preferably, the hot pressing temperature is 120-200℃, the molding pressure is 2-10 MPa, and the molding time is 5-20 min.

7. The method for preparing the irregularly shaped curved transparent lampshade for airborne lighting fixtures according to claim 1, characterized in that, In step S4, an irregular curved surface mold is selected.

8. The method for preparing the irregularly shaped curved transparent lampshade for airborne lighting fixtures according to claim 1, characterized in that, In step S4, the inner surface of the curved mold is finely polished and then coated.

9. A stealth lampshade prepared by the method for preparing an irregularly shaped curved transparent lampshade for an airborne lamp as described in any one of claims 1 to 8.

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