Glasses with scratch-resistant and crease-resistant functions

Abstract

The invention relates to a pair of glasses with scratch-resistant and crease-resistant functions, the glasses comprise a PC + TPU double-color material composite glasses frame and a TR + TPE double-color material composite glasses leg, and the surfaces of the glasses frame and the glasses leg are respectively coated with a composite functional coating and a scratch-resistant coating. The coating process comprises the following steps: pre-treating a base material, spraying a primer, preparing transparent gold oil (containing double-color material gold oil H1, an auxiliary agent H2403-D, a hydrolysis-resistant auxiliary agent H2404 and a diluent) according to a specific weight ratio, performing step-by-step coating to form a solid-color bright black layer, a transparent sand layer or a sand black layer (adding black green F06, flat slurry # XZH02 and black slurry), and finally baking and curing at 60 DEG C. And the sand blasting process is additionally introduced into the glasses leg coating to enhance the wear resistance. By optimizing a coating formula and a step-by-step curing process, the adhesive force, the scratch resistance and the bending resistance of the coating are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of eyeglasses manufacturing technology, specifically to an eyeglass with scratch-resistant and crease-resistant properties and its coating process, applicable to the surface treatment of PC+TPU composite frames and TR+TPE composite temples. Background Technology

[0002] Traditional eyeglass frames and temples are often made of a single material (such as PC, TR90, etc.), which is prone to creases or coating peeling due to long-term bending, and the surface is not scratch-resistant enough.

[0003] In existing technologies, while dual-color composite substrates (such as PC+TPU, TR+TPE) can improve mechanical properties, their surface coatings still have defects in adhesion, weather resistance, and bending resistance. For example, transparent gold oil coatings are prone to cracking due to hydrolysis or mechanical stress, and it is difficult to simultaneously ensure the uniformity and durability of functional layers (such as glossy black and matte finish).

[0004] Therefore, how to develop a coating process for composite substrates and improve the overall performance of the coating by optimizing the formula and process parameters has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The present invention aims to provide eyeglasses with scratch resistance and crease resistance, as well as the coating process for the eyeglass frame and temples, in order to solve the problems of adhesion, scratch resistance and bending resistance of the coating on the surface of the two-color substrate.

[0006] The specific plan is as follows: A pair of eyeglasses with scratch-resistant and crease-resistant functions includes a frame and temples. The frame is provided with a PC+TPU dual-color composite substrate and a composite functional coating. The composite functional coating consists of a solid gloss black layer, a transparent frosted layer, and a sand black layer. The temples are provided with a TR+TPE dual-color composite substrate and a scratch-resistant coating.

[0007] Furthermore, the coating process of the composite functional coating includes the following steps: (1) Prepare PC+TPU dual-color composite substrate and spray primer; (2) Preparation of transparent gold oil: Prepare the raw materials according to the following weight proportions: 6.6 parts of two-color gold oil H1, 0.25 parts of additive H2403-D, 0.3 parts of hydrolysis resistant additive H2404, and 7-10 parts of thinner H3. After mixing, cure at room temperature for 1 hour and bake at 60℃ for 8 hours. Among them: dual-color gold oil H1 serves as the main film-forming agent, providing adhesion and gloss; additive H2403-D serves as a leveling agent, improving coating uniformity; hydrolysis-resistant additive H2404 is used to enhance the coating's resistance to damp heat; and diluent H3:7 is used to adjust viscosity, preferably using ester solvents with suitable boiling points.

[0008] (3) Preparation of solid-color glossy black layer: Take 30 parts of the transparent gold oil prepared in step (2), add 9 parts of black cyan F060, and make black paint; Add 3% by weight of black paste to the black paint, mix, and cure at room temperature for 1.5-2.5 hours; Cover with transparent gold varnish, cure at room temperature for 1 hour, then bake at 60℃ for 8 hours; (4) Preparation of transparent sand layer: Take 1 part of the transparent gold oil prepared in step (2), add 0.43 parts of matte paste #XZH02, mix and cure at room temperature for 1 hour, then bake at 60℃ for 8 hours; (5) Preparation of sand black layer: Take 30 parts of the transparent gold oil prepared in step (2), add 9 parts of black paste F06 and 20 parts of matte paste #XZH02 to make sand black paint; Add 3% by weight of black paste to the sand black paint, mix and cure at room temperature for 1 hour, then bake at 60°C for 8 hours.

[0009] Furthermore, the coating process for the scratch-resistant coating includes the following steps: (1) Prepare TR+TPE dual-color composite substrate, spray primer, and cure at room temperature for 10-20 minutes; (2) Preparation of transparent gold oil: Prepare the raw materials according to the following weight proportions: 6.6 parts of two-color gold oil H1, 0.25 parts of additive H2403-D, 0.3 parts of hydrolysis resistant additive H2404, and 7 parts of thinner H3-N2. After mixing, cure at room temperature for 5-6 hours and then sandblast. Among them, the diluent, as a low surface tension solvent, improves leveling properties.

[0010] (3) Preparation of scratch-resistant coating: Take 1 part of the transparent gold oil prepared in step (2), add 0.45 parts of the matte paste #XZH02, mix and cure at room temperature for 1 hour, then bake at 60℃ for 8 hours.

[0011] Furthermore, the transparent gold oil must be used within 1.5 hours to avoid coating defects caused by solvent evaporation.

[0012] Beneficial effects: The PC+TPU (frame) and TR+TPE (temples) dual-color composite process of this invention can effectively improve impact resistance and bending resistance, and the paint will not crack, peel or crease after bending.

[0013] The frame and temples of this invention are made using a multi-layer coating spraying process, which improves the adhesion of the coating and effectively resists scratches.

[0014] This invention features precise temperature control during baking, resulting in uniform coating curing, reduced risk of bubbles and cracking, and effectively improved scratch resistance and flexural strength, extending service life. Detailed Implementation

[0015] The embodiments of the present invention are described in detail below, as shown in the figures, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to reference are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention. Where specific techniques or conditions are not specified in the embodiments, they are performed in accordance with the techniques or conditions described in the literature in the art or in accordance with the product instructions. Where the manufacturers of the reagents or instruments used are not specified, they are all conventional products that can be obtained commercially.

[0016] Example 1: Preparation of PC+TPU composite functional coating for eyeglass frames 1. Substrate Pretreatment The frame substrate is made of PC+TPU two-color composite injection molding. After surface cleaning, the two-color primer is evenly sprayed using electrostatic spraying equipment and cured at room temperature.

[0017] 2. Preparation of transparent gold oil Weigh the following raw materials according to the following proportions by weight: 6.6 parts of two-color gold oil H1, 0.25 parts of auxiliary agent H2403-D, 0.3 parts of hydrolysis resistant auxiliary agent H2404, and 7-10 parts of diluent H3.

[0018] Add the above components to a mixer and mix at 500-800 rpm for 15 minutes. Filter and allow to stand to defoam. The mixture should be used within 1.5 hours to avoid viscosity changes due to solvent evaporation.

[0019] 3. Solid black coating Take 30 parts of the transparent gold oil from step 2, add 9 parts of black cyan F06 pigment (based on 30% of the total weight of black paint), and mix them evenly using a high-speed disperser; Add black paste (carbon black dispersion) at a rate of 3% of the total weight of the black paint, and continue mixing for 10 minutes. Black paint is sprayed onto the primer surface using an air spraying process and cured at room temperature for 1.5-2.5 hours (preferably 2 hours at room temperature). Cover with transparent gold varnish and cure at room temperature for 1 hour, then transfer to an oven at 60°C for 8 hours to cure.

[0020] 4. Transparent sand coating Take 1 part of the transparent gold oil from step 2, add 0.43 parts of the matte paste #XZH02 (containing silica matting particles), mix and then spray. After curing at room temperature for 1 hour, it is cured at 60℃ for 8 hours to form a matte, wear-resistant surface.

[0021] 5. Sandblasted black coating Take 30 parts of the transparent gold oil from step 2, add 9 parts of black cyan F06 pigment and 20 parts of matte paste #XZH02, mix them and then add black paste (3% of the total weight). After spraying, it cures at room temperature for 1 hour and at 60℃ for 8 hours to form a wear-resistant layer that combines color and sandblasted texture.

[0022] Example 2: Preparation of TR+TPE scratch-resistant coating for temples 1. Substrate Pretreatment Select TR+TPE dual-color composite injection molded mirror temple substrate, clean the surface and electrostatically spray H501 primer, and cure at room temperature for 10-20 minutes.

[0023] 2. Preparation of transparent gold oil Weigh out the following amounts by weight: 6.6 parts of dual-color gold oil H1, 0.25 parts of additive H2403-D, 0.3 parts of hydrolysis resistant additive H2404, and 7 parts of diluent H3-N2.

[0024] After mixing, spray and cure at room temperature for 5-6 hours to achieve full cross-linking.

[0025] 3. Sandblasting treatment Mix 1 part of the transparent gold oil from step 2 with 0.45 parts of the matte paste #XZH02, and spray evenly using a sandblasting device; After curing at room temperature for 1 hour, it is cured at 60℃ for 8 hours to form a dense, scratch-resistant coating.

[0026] This invention exhibits no deformation after more than 5 bends and has good impact resistance.

[0027] The process of this invention is applicable to the surface treatment of two-color composite products such as eyeglasses and sports protective gear, and is especially suitable for high-end products that require both aesthetics and durability.

[0028] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A pair of eyeglasses with scratch-resistant and crease-resistant properties, comprising a frame and temples, characterized in that, The frame is provided with a PC+TPU dual-color composite substrate and a composite functional coating, which consists of a solid gloss black layer, a transparent frosted layer, and a frosted black layer; the temples are provided with a TR+TPE dual-color composite substrate and a scratch-resistant coating.

2. The eyeglasses according to claim 1, characterized in that, The coating process of the composite functional coating includes the following steps: (1) Prepare PC+TPU dual-color composite substrate and spray primer; (2) Preparation of transparent gold oil: Prepare the raw materials according to the following weight proportions: 6.6 parts of two-color gold oil H1, 0.25 parts of additive H2403-D, 0.3 parts of hydrolysis resistant additive H2404, and 7-10 parts of thinner H3. After mixing, cure at room temperature for 1 hour and bake at 60℃ for 8 hours. (3) Preparation of solid-color glossy black layer: Take 30 parts of the transparent gold oil prepared in step (2), add 9 parts of black cyan F060, and make black paint; Add 3% by weight of black paste to the black paint, mix, and cure at room temperature for 1.5-2.5 hours; Cover with transparent gold varnish, cure at room temperature for 1 hour, then bake at 60℃ for 8 hours; (4) Preparation of transparent sand layer: Take 1 part of the transparent gold oil prepared in step (2), add 0.43 parts of matte paste #XZH02, mix and cure at room temperature for 1 hour, then bake at 60℃ for 8 hours; (5) Preparation of sand black layer: Take 30 parts of the transparent gold oil prepared in step (2), add 9 parts of black paste F06 and 20 parts of matte paste #XZH02 to make sand black paint; Add 3% by weight of black paste to the sand black paint, mix and cure at room temperature for 1 hour, then bake at 60°C for 8 hours.

3. The eyeglasses according to claim 1, characterized in that, The application process of the scratch-resistant coating includes the following steps: (1) Prepare TR+TPE dual-color composite substrate, spray primer, and cure at room temperature for 10-20 minutes; (2) Preparation of transparent gold oil: Prepare the raw materials according to the following weight proportions: 6.6 parts of two-color gold oil H1, 0.25 parts of additive H2403-D, 0.3 parts of hydrolysis resistant additive H2404, and 7 parts of thinner H3-N2. After mixing, cure at room temperature for 5-6 hours and then sandblast. (3) Preparation of scratch-resistant coating: Take 1 part of the transparent gold oil prepared in step (2), add 0.45 parts of the matte paste #XZH02, mix and cure at room temperature for 1 hour, then bake at 60℃ for 8 hours.

4. The eyeglasses according to claim 2 or 3, characterized in that, The transparent gold oil must be used within 1.5 hours.