Self-repairing vehicle body sticker

Abstract

The utility model discloses a self-repairing vehicle body sticker which comprises a functional layer, a base material layer, a polyacrylate bonding layer and a bottom layer which are arranged in sequence, the functional layer comprises a zinc ion chelated polyurethane anionic polymer coating and a lignin-based polyurethane coating which are distributed at an interval, and one side of the zinc ion chelated polyurethane anionic polymer coating and one side of the lignin-based polyurethane coating are connected with the base material layer; one side, far away from the base material layer, of each of the zinc ion chelating polyurethane anionic polymer coating and the lignin-based polyurethane coating is coated with a wear-resistant layer. The vehicle body sticker disclosed by the utility model has excellent self-repairing capability, and the environmental protection performance of the material is better.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle body stickers, in particular to a self-repairing vehicle body sticker. Background Art

[0002] Car body stickers are high-performance films that are attached to the surface of car paint to decorate the car body and protect the original paint. Existing car body stickers are mainly composed of three parts: functional layer, adhesive layer and backing paper. The functional layer mainly gives the car body stickers light transmission, waterproof, flame retardant and self-repairing properties. However, the car body stickers on the market do not have self-repairing capabilities. Therefore, when the car body stickers are scratched, they will affect the appearance if they are not replaced. In addition, existing car body stickers also contain toxic substances, which pose safety hazards and are not environmentally friendly. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, one purpose of the utility model is to provide a self-repairing vehicle body sticker with excellent self-repairing ability and better environmental performance of the material.

[0004] The self-repairing vehicle body sticker proposed by the utility model comprises a functional layer, a substrate layer, a polyacrylate adhesive layer and a bottom layer which are arranged in sequence; the functional layer comprises a zinc ion chelated polyurethane anion polymer coating and a lignin-based polyurethane coating which are distributed at intervals, one side of the zinc ion chelated polyurethane anion polymer coating and the lignin-based polyurethane coating are both connected to the substrate layer, and the sides of the zinc ion chelated polyurethane anion polymer coating and the lignin-based polyurethane coating away from the substrate layer are coated with a wear-resistant layer.

[0005] Preferably, the zinc ion chelated polyurethane anion polymer coating and one side of the lignin-based polyurethane coating completely cover the substrate layer together, and the zinc ion chelated polyurethane anion polymer coating is a number of evenly distributed cylinders, and the rest is the lignin-based polyurethane coating.

[0006] Preferably, the zinc ion chelated polyurethane anion polymer coating and one side of the lignin-based polyurethane coating completely cover the substrate layer together, and the zinc ion chelated polyurethane anion polymer coating and the lignin-based polyurethane coating are both wavy with evenly spaced distribution.

[0007] Preferably, the thickness of the zinc ion chelated polyurethane anion polymer coating and the lignin-based polyurethane coating are both 20-40 μm.

[0008] Preferably, the thickness of the polyacrylate adhesive layer is 30-60 μm.

[0009] The beneficial effects of the utility model are:

[0010] The functional layer of the utility model comprises a wear-resistant layer, a zinc ion chelated polyurethane anion polymer coating and a lignin-based polyurethane coating, wherein the wear-resistant layer can protect the zinc ion chelated polyurethane anion polymer coating and the lignin-based polyurethane coating, thereby increasing the service life of the self-repairing vehicle body sticker; the zinc ion chelated polyurethane anion polymer coating and the lignin-based polyurethane coating give the vehicle body sticker an excellent self-repairing function; the polyacrylate adhesive layer of the utility model has a very good adhesive effect; in addition, the raw materials used in the functional layer and the polyacrylate adhesive layer of the utility model are low-toxic / non-toxic and have good environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of the self-repairing vehicle body sticker proposed by the utility model;

[0012] Figure 2 This is a schematic diagram of the structure of the functional layer in Example 1 of the present utility model;

[0013] Figure 3 This is a schematic diagram of the structure of the functional layer in Example 2 proposed by the utility model.

[0014] In the figure: 1-functional layer, 11-wear-resistant layer, 12-zinc ion chelated polyurethane anion polymer coating, 13-lignin-based polyurethane coating, 2-base material layer, 3-polyacrylate adhesive layer, 4-base layer. DETAILED DESCRIPTION

[0015] Example 1

[0016] Reference Figure 1 , a self-repairing car body sticker, comprising a functional layer 1, a substrate layer 2, a polyacrylate adhesive layer 3 and a bottom layer 4 arranged in sequence; the functional layer 1 comprises a zinc ion chelated polyurethane anion polymer coating 12 and a lignin-based polyurethane coating 13 distributed at intervals, one side of the zinc ion chelated polyurethane anion polymer coating 12 and the lignin-based polyurethane coating 13 are both connected to the substrate layer 2, and the side of the zinc ion chelated polyurethane anion polymer coating 12 and the lignin-based polyurethane coating 13 away from the substrate layer 2 is coated with a wear-resistant layer 11.

[0017] Reference Figure 2 The zinc ion chelated polyurethane anion polymer coating 12 and one side of the lignin-based polyurethane coating 13 completely cover the substrate layer 2 together, and the zinc ion chelated polyurethane anion polymer coating 12 is a number of evenly distributed cylinders, and the rest is the lignin-based polyurethane coating 13.

[0018] Wherein: the thickness of the zinc ion chelated polyurethane anion polymer coating 12 and the lignin-based polyurethane coating 13 are both 20-40 μm, preferably 30 μm; the thickness of the polyacrylate adhesive layer 3 is 30-60 μm, preferably 45 μm.

[0019] The polyacrylate adhesive layer is made of acrylic acid, methyl methacrylate and glycidyl methacrylate, and is polymerized under the action of an initiator and a surfactant. During the polymerization process, a three-dimensional network cross-linked structure can be formed, thereby improving the bonding strength of the adhesive layer.

[0020] The zinc ion chelated polyurethane anionic polymer coating is prepared with polybutylene glycol, isophorone diisocyanate, dibutyltin dilaurate, 1,4-butanediol, hydroxyethyl acrylate, acrylic acid and azobisisobutyronitrile as raw materials, and then zinc chloride is added for chelation.

[0021] The lignin-based polyurethane coating is a polyurethane coating prepared by modifying lignin with maleimide.

[0022] Example 2

[0023] Reference Figure 3 The zinc ion chelated polyurethane anion polymer coating 12 and the lignin-based polyurethane coating 13 completely cover the substrate layer 2 on one side, and the zinc ion chelated polyurethane anion polymer coating 12 and the lignin-based polyurethane coating 13 are both wavy and evenly spaced.

[0024] The rest are the same as in Example 1.

[0025] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Self-repairing car body sticker, characterized by: The invention comprises a functional layer (1), a substrate layer (2), a polyacrylate adhesive layer (3) and a bottom layer (4) which are arranged in sequence; the functional layer (1) comprises a zinc ion chelated polyurethane anion polymer coating (12) and a lignin-based polyurethane coating (13) which are distributed at intervals; one side of the zinc ion chelated polyurethane anion polymer coating (12) and the lignin-based polyurethane coating (13) are both connected to the substrate layer (2); and the sides of the zinc ion chelated polyurethane anion polymer coating (12) and the lignin-based polyurethane coating (13) which are away from the substrate layer (2) are coated with a wear-resistant layer (11).

2. The self-repairing vehicle body sticker according to claim 1, characterized in that: The zinc ion chelated polyurethane anion polymer coating (12) and one side of the lignin-based polyurethane coating (13) completely cover the substrate layer (2) together, and the zinc ion chelated polyurethane anion polymer coating (12) is a plurality of evenly distributed cylinders, and the rest is the lignin-based polyurethane coating (13).

3. The self-repairing vehicle body sticker according to claim 1, characterized in that: The zinc ion chelated polyurethane anion polymer coating (12) and the lignin-based polyurethane coating (13) completely cover the substrate layer (2) on one side, and the zinc ion chelated polyurethane anion polymer coating (12) and the lignin-based polyurethane coating (13) are both in the form of waves that are evenly spaced.

4. The self-repairing vehicle body sticker according to claim 1, characterized in that: The thickness of the zinc ion chelated polyurethane anion polymer coating (12) and the lignin-based polyurethane coating (13) are both 20-40 μm.

5. The self-repairing vehicle body sticker according to claim 1, characterized in that: The thickness of the polyacrylate adhesive layer (3) is 30-60 μm.

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