Stretch-resistant and wear-resistant reflective film

Abstract

The utility model belongs to the technical field of reflective films, and particularly relates to a stretch-resistant and wear-resistant reflective film which comprises a base material layer, a self-repairing composite layer is bonded on the upper surface of the base material layer, a basalt fiber one-way laying layer is bonded on the upper surface of the self-repairing composite layer, and the basalt fiber one-way laying layer is bonded on the lower surface of the self-repairing composite layer. And a thermoplastic polyester elastomer layer is adhered to the upper surface of the basalt fiber unidirectional paving layer. According to the stretch-resistant and wear-resistant reflective film, the self-repairing composite layer, the basalt fiber one-way laying layer, the thermoplastic polyester elastomer layer, the para-aramid fiber woven layer, the diamond-like carbon film layer, the wear-resistant composite layer, the nano aluminum oxide reinforced polyurethane coating and the graphene modified polyimide coating are matched; through cooperation of the microprism structure layer, the reflective coating layer and the rare earth doped silicon dioxide nanoparticle layer, the reflective film has high tensile and wear-resistant performance, and meanwhile, through cooperation of the microprism structure layer, the reflective coating layer and the rare earth doped silicon dioxide nanoparticle layer, the reflective film has high reflective performance.

Description

Technical Field

[0001] This utility model belongs to the field of reflective film technology, specifically relating to a tensile-resistant and wear-resistant reflective film. Background Technology

[0002] Reflective film is a functional material widely used in traffic safety, advertising signage, and industrial equipment. Its main function is to make targets more easily identifiable in low-light conditions by reflecting light. However, existing reflective films have some shortcomings in use. On the one hand, traditional reflective films have weak tensile strength and are prone to deformation or even breakage when subjected to external forces. This not only affects the service life of the reflective film but may also lead to a decrease in its reflective performance. On the other hand, the wear resistance of existing reflective films needs improvement. Over time, the surface is easily worn, causing the reflective effect to gradually weaken and requiring frequent replacement, increasing usage costs. Furthermore, existing reflective films achieve reflection only through a single microprism structure, resulting in poor reflective performance. Utility Model Content

[0003] The purpose of this invention is to provide a tensile and wear-resistant reflective film that solves the problems of insufficient tensile and wear resistance and poor reflective performance of traditional reflective films.

[0004] The specific technical solution adopted by this utility model is as follows:

[0005] A tensile and abrasion-resistant reflective film includes a substrate layer, a self-healing composite layer bonded to the upper surface of the substrate layer, a basalt fiber unidirectional layup bonded to the upper surface of the self-healing composite layer, a thermoplastic polyester elastomer layer bonded to the upper surface of the basalt fiber unidirectional layup, a para-aramid fiber woven layer bonded to the upper surface of the thermoplastic polyester elastomer layer, a reflective layer bonded to the upper surface of the para-aramid fiber woven layer, a diamond-like carbon film layer bonded to the upper surface of the reflective layer, an abrasion-resistant composite layer bonded to the upper surface of the diamond-like carbon film layer, a nano-alumina-reinforced polyurethane coating bonded to the upper surface of the abrasion-resistant composite layer, and a graphene-modified polyimide coating bonded to the upper surface of the nano-alumina-reinforced polyurethane coating.

[0006] The present invention is further configured such that the thickness of the self-healing composite layer, the basalt fiber unidirectional lay-up, the thermoplastic polyester elastomer layer and the para-aramid fiber braided layer are all 2 μm, and the fiber directions of adjacent layers are rotated by 45° in sequence.

[0007] The present invention is further configured such that the reflective layer comprises a microprism structure layer, a reflective coating layer, and a rare earth-doped silica nanoparticle layer; the bottom of the microprism structure layer is bonded to the upper surface of the para-aramid fiber braided layer; the upper surface of the microprism structure layer is bonded to the bottom of the reflective coating layer; the upper surface of the reflective coating layer is bonded to the bottom of the rare earth-doped silica nanoparticle layer; and the upper surface of the rare earth-doped silica nanoparticle layer is bonded to the bottom of the diamond-like carbon thin film layer.

[0008] The present invention is further configured such that the reflective coating is formed by the deposition of silver, titanium dioxide and silver, and the thickness of the reflective coating is 30 nm.

[0009] The present invention is further configured such that the wear-resistant composite layer is composed of silicon carbide nanowires and epoxy resin, and the thickness of the diamond-like carbon thin film layer, the wear-resistant composite layer, the nano-alumina-reinforced polyurethane coating and the graphene-modified polyimide coating is 0.5 μm.

[0010] The present invention is further configured such that the substrate layer is a modified polyacrylate / polyethylene terephthalate (PET) composite film, and the thickness of the substrate layer is 80 μm.

[0011] The technical effects achieved by this utility model are as follows:

[0012] This invention discloses a tensile and wear-resistant reflective film. Through the complementary properties of the self-healing composite layer, basalt fiber unidirectional lay-up, thermoplastic polyester elastomer layer, and para-aramid fiber woven layer, as well as the rotation of the fiber direction, a three-dimensional stress dispersion network is formed on the reflective film, thereby giving the reflective film strong tensile strength. At the same time, through the synergistic effect of the diamond-like carbon film layer, wear-resistant composite layer, nano-alumina reinforced polyurethane coating, and graphene-modified polyimide coating, the reflective film has strong wear resistance. Furthermore, since the graphene-modified polyimide coating has self-lubricating properties, it reduces the friction on the surface of the reflective film and further improves the wear resistance of the reflective film.

[0013] The present invention provides a tensile and wear-resistant reflective film. By setting a high-refractive-index microprism structure layer and a reflective coating made of silver, titanium dioxide and silver deposition in the reflective layer, the reflective film has a strong reflective effect. At the same time, the rare earth-doped silicon dioxide nanoparticle layer can further enhance the reflective effect of the reflective film through light scattering and fluorescence conversion. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the reflective layer in this utility model.

[0016] The attached diagram lists the components represented by each number as follows:

[0017] 1. Substrate layer; 2. Self-healing composite layer; 3. Basalt fiber unidirectional layup; 4. Thermoplastic polyester elastomer layer; 5. Para-aramid fiber braided layer; 6. Reflective layer; 61. Microprism structure layer; 62. Reflective coating; 63. Rare earth doped silica nanoparticle layer; 7. Diamond-like carbon film layer; 8. Wear-resistant composite layer; 9. Nano-alumina reinforced polyurethane coating; 10. Graphene modified polyimide coating. Detailed Implementation

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0020] like Figure 1 As shown, a tensile and wear-resistant reflective film includes a substrate layer 1, a self-healing composite layer 2 bonded to the upper surface of the substrate layer 1, a basalt fiber unidirectional layup 3 bonded to the upper surface of the self-healing composite layer 2, a thermoplastic polyester elastomer layer 4 bonded to the upper surface of the basalt fiber unidirectional layup 3, a para-aramid fiber braided layer 5 bonded to the upper surface of the thermoplastic polyester elastomer layer 4, a reflective layer 6 bonded to the upper surface of the para-aramid fiber braided layer 5, a diamond-like carbon film layer 7 bonded to the upper surface of the reflective layer 6, a wear-resistant composite layer 8 bonded to the upper surface of the diamond-like carbon film layer 7, a nano-alumina reinforced polyurethane coating 9 bonded to the upper surface of the wear-resistant composite layer 8, and a graphene-modified polyimide coating 10 bonded to the upper surface of the nano-alumina reinforced polyurethane coating 9.

[0021] The thickness of the self-healing composite layer 2, the basalt fiber unidirectional lay-up layer 3, the thermoplastic polyester elastomer layer 4, and the para-aramid fiber braided layer 5 is 2μm, and the fiber directions of adjacent layers are rotated 45° sequentially.

[0022] The wear-resistant composite layer 8 is composed of silicon carbide nanowires and epoxy resin. The thickness of the diamond-like carbon thin film layer 7, the wear-resistant composite layer 8, the nano-alumina reinforced polyurethane coating 9, and the graphene modified polyimide coating 10 is 0.5 μm.

[0023] The substrate layer 1 is a modified polyacrylate / polyethylene terephthalate (PET) composite film with a thickness of 80 μm.

[0024] It should be noted that the self-healing composite layer 2 is composed of nickel-titanium alloy microfilaments and polyurethane elastomer. The self-healing composite layer 2 endows the reflective film with self-healing and stress relaxation functions. The basalt fiber unidirectional layup 3 improves the reflective film's high temperature resistance and anti-aging performance. The thermoplastic polyester elastomer layer 4 gives the reflective film flexibility (elongation at break >500%). The para-aramid fiber braided layer 5 provides high strength (tensile strength 3.6GPa). Through the complementary properties of the self-healing composite layer 2, the basalt fiber unidirectional layup 3, the thermoplastic polyester elastomer layer 4, and the para-aramid fiber braided layer 5, as well as the rotation of the fiber direction, a three-dimensional stress dispersion network is formed on the reflective film, thereby giving the reflective film strong tensile strength.

[0025] The diamond-like carbon thin film layer 7 has strong wear resistance. The wear-resistant composite layer 8 resists crack propagation through the toughening mechanism of its internal silicon carbide nanowires, and the wear-resistant composite layer 8 has strong wear resistance through its internal epoxy resin. The nano-alumina reinforced polyurethane coating 9 has a hardness of 6H, which improves scratch resistance. The graphene modified polyimide coating 10 provides initial wear protection and self-lubricating properties.

[0026] The synergistic effect of the diamond-like carbon thin film layer 7, the wear-resistant composite layer 8, the nano-alumina reinforced polyurethane coating 9, and the graphene-modified polyimide coating 10 gives the reflective film strong wear resistance. Furthermore, since the graphene-modified polyimide coating 10 has self-lubricating properties, it reduces the friction on the surface of the reflective film and further improves its wear resistance.

[0027] like Figures 1 to 2 As shown, the reflective layer 6 includes a microprism structure layer 61, a reflective coating layer 62, and a rare earth-doped silica nanoparticle layer 63. The bottom of the microprism structure layer 61 is bonded to the upper surface of the para-aramid fiber braided layer 5, the upper surface of the microprism structure layer 61 is bonded to the bottom of the reflective coating layer 62, the upper surface of the reflective coating layer 62 is bonded to the bottom of the rare earth-doped silica nanoparticle layer 63, and the upper surface of the rare earth-doped silica nanoparticle layer 63 is bonded to the bottom of the diamond-like carbon thin film layer 7.

[0028] The reflective coating 62 is formed by the deposition of silver, titanium dioxide and silver, and the thickness of the reflective coating 62 is 30nm.

[0029] It should be noted that the microprism structure layer 61 is made of a high refractive index (n≥1.75) nanocomposite resin, composed of zirconium dioxide nanoparticles (volume fraction 20-30%) with a uniformly dispersed particle size of 20-50 nm in a methyl methacrylate (MMA) matrix. The microprism has an apex angle of 88-92°, a base side length of 30-50 μm, and an apex angle error controlled within ±0.1°.

[0030] The reflective coating 62 adopts a three-layer structure of silver / titanium dioxide / silver with a total thickness of 30-40nm. The inner silver layer (10-15nm) provides high reflectivity, the middle titanium dioxide layer (5-10nm) serves as an optical spacer, and the outer silver layer (10-15nm) protects the titanium dioxide layer and enhances reflection.

[0031] A rare earth-doped silica nanoparticle layer 63 is deposited on the surface of the reflective coating 62. The rare earth-doped silica nanoparticle layer 63 consists of europium (Eu)-doped silica nanoparticles with a particle size of 50-100 nm and a doping concentration of 1-3 mol%, forming a uniformly distributed nano-protrusion structure to enhance light scattering and secondary reflection.

[0032] By setting a high-refractive-index microprism structure layer 61 and a reflective coating layer 62 made of silver, titanium dioxide and silver deposition in the reflective layer 6, the reflective film has a strong reflective effect. At the same time, the rare earth-doped silicon dioxide nanoparticle layer 63 can further enhance the reflective effect of the reflective film through light scattering and fluorescence conversion.

[0033] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A stretch-resistant, wear-resistant retroreflective film, characterized by: The self-repairing composite layer (2), the basalt fiber unidirectional layer (3), the thermoplastic polyester elastomer layer (4) and the para-aramid fiber woven layer (5) all have a thickness of 2 μm, and the fiber directions of the adjacent two layers are set in turn with a rotation of 45°.

2. The stretch-resistant, wear-resistant retroreflective film of claim 1, wherein: The reflective layer (6) comprises a micro-prism structure layer (61), a reflective plating layer (62) and a rare earth doped silica nanoparticle layer (63), the bottom of the micro-prism structure layer (61) is bonded to the upper surface of the para-aramid fiber woven layer (5), the upper surface of the micro-prism structure layer (61) is bonded to the bottom of the reflective plating layer (62), the upper surface of the reflective plating layer (62) is bonded to the bottom of the rare earth doped silica nanoparticle layer (63), and the upper surface of the rare earth doped silica nanoparticle layer (63) is bonded to the bottom of the diamond-like carbon film layer (7).

3. The stretch resistant, wear resistant retroreflective film of claim 1 wherein: The reflective plating layer (62) is deposited by silver, titanium dioxide and silver, and has a thickness of 30 nm.

4. The stretch-resistant, wear-resistant retroreflective film of claim 3, wherein: The wear-resistant composite layer (8) is composed of silicon carbide nanowires and epoxy resin, and the diamond-like carbon film layer (7), the wear-resistant composite layer (8), the nano-alumina reinforced polyurethane coating (9) and the graphene modified polyimide coating (10) all have a thickness of 0.5 μm.

5. The stretch-resistant, wear-resistant retroreflective film of claim 1, wherein: The substrate layer (1) is a modified polyacrylate / polyethylene terephthalate (PET) composite film, and has a thickness of 80 μm.

6. The stretch-resistant, wear-resistant retroreflective film of claim 1, wherein: ​

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