Plastic part with golden texture and white light transmitting film layer structure

Abstract

The utility model belongs to the technical field of automobile surface coatings, and provides a plastic part with a golden texture and a white light transmitting film layer structure, which comprises a base material layer, a composite coating layer is sputtered on the surface of the base material layer, and the composite coating layer comprises a metal color copper layer, a silicon oxide layer and a niobium oxide layer. The metal color copper layer, the silicon oxide layer and the niobium oxide layer are sequentially sputtered on the base material layer. The utility model has the advantages that the base coating process is avoided, only the sputtering composite coating layer and the UV surface coating layer are needed, the coating layer is larger in binding force, high in hardness, resistant to friction and corrosion and more stable in performance through the sputtering coating mode, toxic or polluted substances and gases cannot be generated, adverse effects on the environment are avoided, and the service life of the coating is prolonged. And the development direction of modern green manufacturing is met.

Description

Technical Field

[0001] The utility model belongs to the technical field of automotive surface coatings, and particularly relates to a plastic part with a golden texture and a white light-transmitting film layer structure. Background Art

[0002] The plastic substrate coating layer can realize the development of different color requirements for plastic substrate parts. The luminous label coating is an inorganic coating that will not oxidize. The plastic material after coating will not be oxidized and disappear by external factors such as ultraviolet rays and acid rain. Moreover, it can achieve the metal color marking effect during the day and the visible white light effect under the backlight at night, which has a prominent visual effect in the visualization of automotive signs. Some high-end automobile manufacturers' customers have put forward relevant requirements for this headlight coating technology. It is expected that the demand for headlight coating will be highly popular in 2-3 years. The existing problems need to be solved, such as the appearance of bright spots and pinholes after the combination of transparent PC substrate pinholes and PVD film, and the adhesion test performance of the bottomless coating and PVD is difficult to meet the test requirements such as high-temperature boiling water cross-cut test. The high and low temperature environment testability of the film layer and the plastic substrate after coating is difficult to meet the requirements. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a plastic part with a golden texture and a white light-transmitting film layer structure in view of the current situation of the prior art, so as to solve the reflectivity problem caused by the absorption of copper in the short wavelength band of the reflectivity and the problem of white light emission after night light transmission.

[0004] The technical solution adopted by the utility model to solve the above technical problems is as follows: A plastic part has a golden texture and a white light-transmitting film layer structure, including a substrate layer. It is characterized in that a composite coating layer is sputtered on the surface of the substrate layer. The composite coating layer includes a metallic copper layer, a silicon oxide layer, and a niobium oxide layer. The metallic copper layer, the silicon oxide layer, and the niobium oxide layer are sputtered on the substrate layer in sequence.

[0005] In the above-mentioned plastic part with a golden texture and a white light-transmitting film layer structure, the thickness of the metallic copper layer is 5-40 nm, the thickness of the silicon oxide layer is 5-20 nm, and the thickness of the niobium oxide layer is 30-60 nm.

[0006] In the above-mentioned plastic part with a golden texture and a white light-transmitting film layer structure, a topcoat layer is also sprayed on the outer surface of the composite coating layer.

[0007] In the above-mentioned plastic part with a golden texture and a white light-transmitting film layer structure, the thickness of the topcoat layer is 6-15 μm.

[0008] In the above-mentioned plastic part with a golden texture and a white light-transmitting film layer structure, the substrate layer is polycarbonate PC, and the light transmittance is above 90%.

[0009] Compared with the prior art, the advantage of the utility model is that it does not require a primer process and only requires a sputtering composite coating layer plus a UV top coating. The coating layer has greater bonding strength, high hardness, friction resistance, and corrosion resistance through sputtering coating. The performance of the film layer is more stable, and no toxic or polluting substances and gases are produced, which has no adverse effects on the environment and is in line with the development direction of modern green manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of a plastic part having a golden texture and a white light-transmitting film layer. DETAILED DESCRIPTION

[0011] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0012] In the figure, there are a substrate layer 100 , a composite coating layer 200 , a metallic copper layer 201 , a silicon oxide layer 202 , a niobium oxide layer 203 , and a topcoat layer 300 .

[0013] like Figure 1 As shown, the plastic part has a golden texture and a white light-transmitting film structure, including a substrate layer 100, the substrate layer 100 is polycarbonate PC, and the light transmittance is above 90%, the substrate layer 100 is a highly light-transmitting, colorless and transparent amorphous thermoplastic material, a composite coating layer 200 is sputtered on the surface of the substrate layer 100, the composite coating layer 200 includes a metallic copper layer 201, a silicon oxide layer 202 and a niobium oxide layer 203, the metallic copper layer 201, the silicon oxide layer 202 and the niobium oxide layer 203 are sputtered on the substrate layer 100 in sequence, the metallic copper layer 201 has a thickness of 5-40nm, the silicon oxide layer 202 has a thickness of 5-20nm, and the niobium oxide layer 203 has a thickness of 30- 60nm, here because of the sputtering of the metallic copper layer 201, it has a golden color effect, the silicon oxide layer 202 and the niobium oxide layer 203 are designed as an optical film structure, and the low-refractive-index silicon dioxide and high-refractive-index niobium pentoxide materials are introduced into the structure to superimpose the film system, so as to solve the reflectivity problem caused by the absorption of copper in the short-wave band of reflectivity (when a certain intensity of light passes through an object, the less the absorbed part, the more the transparent part, and vice versa), thereby solving the problem of emitting white light after light transmission at night. In order to protect the composite coating layer 200, a topcoat layer 300 is also sprayed on the outer surface of the composite coating layer 200, and the inner paint layer 300 is UV paint, and the thickness of the topcoat layer 300 is 6-15um.

[0014] During the production, in step 1, polycarbonate PC is used for the substrate layer 100. In step 2, the surface of the substrate layer 100 is cleaned by ultrasonic cleaning with a neutral detergent. The high-frequency oscillation of the ultrasonic wave is used, and at the same time, the pH range of the neutral detergent is added to use the non-ionic + anionic / cationic surfactants in the neutral detergent to clean the surface of the substrate layer 100. In step 3, the sputtering coating method is used. The sputtering coating materials are copper, silicon dioxide, and niobium pentoxide. The first layer is a metallic copper layer 201 with a thickness of 5-40nm, so that its appearance has a metallic color. The second layer is a sputtering base layer silicon oxide layer 202 with a thickness of 5-20nm. The third layer is a sputtering niobium oxide layer 203 with a thickness controlled at 30-60nm, the transmittance is controlled in the range of 8%-15% according to the thickness setting, and it has the effect of transmitting white light. The second and third layers are designed as optical film structures. The low-refractive-index silicon dioxide and high-refractive-index niobium pentoxide materials are superimposed on the structure to reduce the short-wave absorption problem of the metal copper layer; Step 4: Spraying a protective topcoat layer 300, by spraying a layer of UV paint, the thickness is controlled at 6-15um, after UV curing for 90s, solid baking at 80℃, solid baking time for 5 hours, to solve the need for primer and then sputtering metal color in the traditional process, and finally topcoat process, through the sputtering coating method, the coating layer has greater bonding strength, high hardness, friction resistance, corrosion resistance, and the performance of the film layer is more stable.

[0015] The specific embodiments described in this article are merely examples of the spirit of the present invention. Technicians in the technical field to which the present invention belongs can make various modifications to the described specific embodiments or replace them in similar ways, but they will not deviate from the scope defined by the spirit of the present invention.

Claims

1. A plastic part having a golden texture and a white light-transmitting film structure, comprising a substrate layer, characterized in that: A composite coating layer is sputtered on the surface of the substrate layer. The composite coating layer includes a metallic copper layer, a silicon oxide layer and a niobium oxide layer. The metallic copper layer, the silicon oxide layer and the niobium oxide layer are sputtered on the substrate layer in sequence.

2. The plastic part according to claim 1 has a golden texture and a white light-transmitting film structure, characterized in that: The thickness of the metallic copper layer is 5-40nm, the thickness of the silicon oxide layer is 5-20nm, and the thickness of the niobium oxide layer is 30-60nm.

3. The plastic part according to claim 1 has a golden texture and a white light-transmitting film structure, characterized in that: A topcoat layer is also sprayed on the outer surface of the composite coating layer.

4. The plastic part according to claim 3 has a golden texture and a white light-transmitting film structure, characterized in that: The thickness of the topcoat layer is 6-15um.

5. The plastic part according to claim 1 has a golden texture and a white light-transmitting film structure, characterized in that: The substrate layer is polycarbonate PC, and the light transmittance is above 90%.

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