CN-120056563-B - PET mirror film and preparation method thereof

Abstract

The invention discloses a PET mirror film and a preparation method thereof, which belong to the technical field of PET films, and the preparation method of the PET mirror film comprises the following steps of (1) providing a first PET film and a second PET film; the method comprises the steps of (1) carrying out plasma surface treatment on a first PET film, carrying out electroplating on the first PET film to form an electroplated layer, (3) coating coloring liquid on the surface of the electroplated layer to form a coloring layer, (4) carrying out plasma surface treatment on the coloring layer, placing a second PET film on the surface of the coloring layer, and then carrying out plasma surface treatment on the second PET film, (5) coating scratch-resistant paint on the surface of the second PET film to form a scratch-resistant layer. The PET mirror surface film disclosed by the invention has excellent wear resistance, scratch resistance and ageing resistance, and has a wide application prospect.

Inventors

• ZHANG QINGWANG

Assignees

• 广东安可科技有限公司

Dates

Publication Date

20260512

Application Date

20250213

Claims (8)

1. 1. The preparation method of the PET mirror film is characterized by comprising the following steps of: (1) Providing a first PET film and a second PET film; (2) Carrying out plasma surface treatment on the first PET film, and electroplating the first PET film to form an electroplated layer; (3) Coating the coloring liquid on the surface of the electroplated layer to form a coloring layer; (4) Carrying out plasma surface treatment on the coloring layer, placing a second PET film on the surface of the coloring layer, and carrying out plasma surface treatment on the second PET film; (5) Coating scratch-resistant coating on the surface of the second PET film to form a scratch-resistant layer; 45-55 parts of hydroxyl acrylic resin, 6-12 parts of cashew nut shell oil bio-based polyol, 9-12 parts of modified acicular wollastonite powder, 2-5 parts of polyvinyl alcohol, 2-4 parts of isophorone diisocyanate, 0.2-0.6 part of defoamer, 0.1-0.2 part of catalyst, 0.5-1.2 parts of titanium dioxide and 15-25 parts of second solvent; the preparation method of the modified acicular wollastonite powder comprises the following steps: (1) Adding 10 parts by weight of acicular wollastonite powder, 0.8-1.2 parts by weight of stearic acid, 0.4-0.8 parts by weight of oleic acid and 6-12 parts by weight of absolute ethyl alcohol into 25-40 parts by weight of water, uniformly stirring at 70-85 ℃, adding 0.2-0.6 part by weight of sorbitan monostearate, and uniformly stirring to obtain a precursor solution; (2) Adding 10 parts by weight of amino silicone oil, 6-8 parts by weight of N-oleoyl-N-methyl taurine sodium and 4-6 parts by weight of dopamine hydrochloride into 30-50 parts by weight of water, uniformly stirring, adding 0.8-1.5 parts by weight of tris (hydroxymethyl) aminomethane hydrochloride buffer solution, and uniformly stirring to obtain a modified solution; (3) And (3) dripping 2-5 parts by weight of the modified liquid into 10 parts by weight of the precursor liquid, uniformly stirring at 70-85 ℃, filtering, and drying to obtain the modified acicular wollastonite powder.
2. 2. The method for producing a PET mirror film according to claim 1, wherein the power of the plasma surface treatment is 100 to 300W for 1 to 4 minutes.
3. 3. The method for preparing the PET mirror film according to claim 1, wherein the electroplated layer is aluminum, silver, copper, chromium or zinc, and the thickness of the electroplated layer is 10-20 nm.
4. 4. The method of claim 1, wherein the thickness of the colored layer is 0.5-1.2 μm.
5. 5. The preparation method of the PET mirror film according to claim 1, wherein the coloring liquid comprises, by weight, 50-70 parts of acrylic resin, 10-30 parts of a first solvent, 0.1-0.5 part of a leveling agent, 0.1-0.3 part of an antioxidant, 1-2 parts of isophorone diisocyanate and 3-5 parts of color paste.
6. 6. The method for producing a PET mirror film according to claim 1, wherein the cashew nut shell oil bio-based polyol has a hydroxyl value of 224 to 256mg KOH/g and a viscosity of 1200 to 1710 mPa-s at 25 ℃.
7. 7. The method for producing a PET mirror film according to claim 1, wherein the hydroxyl acrylic resin has a solid content of 44 to 46wt%, a viscosity of 1000 to 4000 mPa.s at 25 ℃, a hydroxyl content of 2 to 2.5wt%, and a glass transition temperature of 40 to 50 ℃.
8. 8. The method for producing a PET mirror film according to claim 1, wherein the needle wollastonite powder has a particle size of 200 to 1000 mesh.

Description

PET mirror film and preparation method thereof Technical Field The invention relates to the technical field of PET films, in particular to a PET mirror film and a preparation method thereof. Background Early mirror surface facing film substrate selection is limited, performance is also more general, with the continuous progress of material science, plastic films such as PET (polyethylene terephthalate), PC (polycarbonate) and the like are widely used as substrate traditional mirror surfaces, glass is usually used as substrate, the problems of fragility, heavy weight and inconvenient transportation and installation exist, and the glass mirror has higher cost, is easy to hurt people after being crushed, and has potential safety hazard. In the aspect of building decoration, the requirements of people on the attractiveness and uniqueness of interior decoration are higher and higher, the mirror face decorative facial mask can simulate the mirror face effect, and the brightness and the spaciousness of the building space are not increased. In home decoration, the mirror surface decorative film can be used for decoration of surfaces of furniture, cabinets, electric appliances and the like, and adds fashion sense and modern sense to furniture environment. The existing PET film has insufficient wear resistance and scratch resistance, and in the long-term use process, the surface can be gradually worn due to frequent touch, wiping and other operations, so that the reflectivity is reduced, the mirror effect is poor, and the service life is relatively short. In view of this, the present application has been proposed. Disclosure of Invention The invention aims to overcome the defects of the prior art and provide a PET mirror film and a preparation method thereof, the PET mirror surface film disclosed by the invention has excellent wear resistance, scratch resistance and ageing resistance, and has a wide application prospect. In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: a preparation method of a PET mirror film comprises the following steps: (1) Providing a first PET film and a second PET film; (2) Carrying out plasma surface treatment on the first PET film, and electroplating the first PET film to form an electroplated layer; (3) Coating the coloring liquid on the surface of the electroplated layer to form a coloring layer; (4) Carrying out plasma surface treatment on the coloring layer, placing a second PET film on the surface of the coloring layer, and carrying out plasma surface treatment on the second PET film; (5) And coating scratch-resistant coating on the surface of the second PET film to form a scratch-resistant layer. The PET mirror surface film is a multilayer film, has high glossiness and reflectivity, can provide high reflection effect like a mirror surface, enables the surface of a product to have unique visual attraction, enhances the attractiveness of the product, meets the requirements on high-end and fashionable appearance, has excellent flatness and uniformity, ensures the appearance of the product to be flat and smooth, has no obvious unevenness or flaws, enables the reflection effect to be more uniform and consistent, and has excellent wear resistance, scratch resistance and ageing resistance, can effectively prevent the surface of the product from being scratched and worn, prolongs the service life of the product, has certain resistance to common chemical substances, can prevent the invasion of moisture and humidity, and protects the interior of the product from being damaged. Due to the characteristics of PET materials, the PET mirror surface film disclosed by the invention can not be broken into sharp fragments even if being impacted by external force, so that the risk of hurting people is avoided. As a preferred embodiment of the invention, the power of the plasma surface treatment is 100-300W, and the time is 1-4 min. As a preferable implementation scheme of the invention, the electroplated layer is aluminum, silver, copper, chromium or zinc, and the thickness of the electroplated layer is 10-20 nm. As a preferred embodiment of the present invention, the thickness of the colored layer is 0.5 to 1.2. Mu.m. The coloring liquid comprises, by weight, 50-70 parts of acrylic resin, 10-30 parts of a first solvent, 0.1-0.5 part of a leveling agent, 0.1-0.3 part of an antioxidant, 1-2 parts of isophorone diisocyanate and 3-5 parts of color paste. As a preferred embodiment of the present invention, the antioxidant includes at least one of antioxidant 1010, antioxidant 1086, antioxidant 1076. As a preferred embodiment of the present invention, the leveling agent includes at least one of an acrylated polysiloxane, a polyether modified polysiloxane, a polysiloxane polyether copolymer, and a polysiloxane. As a preferred embodiment of the present invention, the first solvent includes at least one of water, ethylene glycol butyl ether, ethyl acetate, butyl