Highlight black material laser etching white composite material and preparation method and application thereof

Abstract

The invention relates to the technical field of high polymer materials, in particular to a highlight black material laser etching white composite material and a preparation method and application thereof. The highlight black material laser etching white composite material is prepared from the following raw materials: polymethyl methacrylate, acrylonitrile, styrene, a toughening agent, a flame retardant, a coupling agent, an antioxidant, a light stabilizer and black masterbatch. By adding polymethyl methacrylate, acrylonitrile, styrene and other raw materials and reasonably adjusting the proportion and laser etching parameters of all the raw materials, the product meets the requirement that the surface of a black highlight material needs to highlight the white characteristic, a stable process can be formed, procedures are reduced, and the production and manufacturing cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of polymer materials, and in particular to a composite material of a high-gloss black material laser-engraved white, and a preparation method and application thereof. Background Art

[0002] At present, in order to present different colors of vehicle body exterior products, it is usually achieved by adding specific features to the formed substrate through post-processing such as spraying or printing. Products processed by this method have a good appearance. However, there are many problems, such as many processes and complex processes, including two-color molding-printing-spraying products, and high environmental requirements; low pass rate and high defect rate, and the product is prone to cracking and whitening after two-color molding; there is a lot of process waste and high manufacturing cost.

[0003] In order to simplify the process, currently engraving can be done directly on the substrate, and the material used for engraving is ABS material, but ABS material has no high-gloss outer surface, which does not meet the appearance requirements of the car and the aesthetic standards of consumers. Therefore, it is necessary to provide a composite material of high-gloss black material laser engraved white and its preparation method and application, so that the product meets the demand for highlighting the white characteristics of the black high-gloss material surface, and can form a stable process, reduce the process, and reduce the production cost. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the above-mentioned prior art. To this end, the present invention proposes a composite material of a high-gloss black material laser-engraved white and a preparation method and application thereof, so that the product meets the requirement of highlighting the white feature on the surface of the black high-gloss material, and can form a stable process, reduce the number of processes, and reduce the production cost.

[0005] A first aspect of the present invention provides a composite material of a high-gloss black material and a laser-engraved white material.

[0006] Specifically, the raw materials of the composite material of high-gloss black material laser-engraved white include: polymethyl methacrylate, acrylonitrile, styrene, toughening agent, flame retardant, coupling agent, antioxidant, light stabilizer, and black masterbatch.

[0007] Preferably, in parts by weight, the polymethyl methacrylate is 35-45 parts, acrylonitrile is 20-30 parts, styrene is 25-35 parts, toughening agent is 5-8 parts, flame retardant is 2-5 parts, coupling agent is 1-2 parts, antioxidant is 0.1-0.4 parts, light stabilizer is 0.4-1 parts, and black masterbatch is 2-5 parts.

[0008] Preferably, in parts by weight, the polymethyl methacrylate is 38-42 parts, acrylonitrile is 20-25 parts, styrene is 25-30 parts, toughening agent is 5-8 parts, flame retardant is 2-5 parts, coupling agent is 1-2 parts, antioxidant is 0.1-0.4 parts, light stabilizer is 0.4-1 parts, and black masterbatch is 2-5 parts.

[0009] A second aspect of the present invention provides a method for preparing a composite material of a high-gloss black material and a laser-engraved white material.

[0010] Specifically, the following steps are included:

[0011] The raw materials are mixed to obtain plastic particles, and the plastic particles are subjected to material baking, high-temperature stirring and melting, filling, pressure holding, and injection molding to obtain a composite material of high-gloss black material and laser-engraved white.

[0012] Preferably, the baking time is 4 to 10 hours at a temperature of 65 to 95°C.

[0013] More preferably, the baking time is 4 to 6 hours at a temperature of 75 to 85°C.

[0014] More preferably, the baking time is 5 hours and the temperature is 80°C.

[0015] Preferably, the temperature settings for the high-temperature stirring and melting include: nozzle temperature of 253-257°C; first stage temperature of 248-252°C; second stage temperature of 238-242°C; third stage temperature of 228-232°C; and fourth stage temperature of 208-212°C.

[0016] Further preferably, the temperature settings for the high-temperature stirring and melting include: nozzle temperature of 254-256°C; first stage temperature of 249-251°C; second stage temperature of 239-241°C; third stage temperature of 229-231°C; and fourth stage temperature of 209-211°C.

[0017] More preferably, the temperature settings for the high-temperature stirring and melting include: nozzle temperature of 254-256°C; first stage temperature of 250°C; second stage temperature of 240°C; third stage temperature of 230°C; and fourth stage temperature of 210°C.

[0018] Preferably, the filling pressure is 100-120 mpa / kgf, and the filling speed is 30-40% / mm / s.

[0019] More preferably, the filling pressure is 110-120 mpa / kgf, and the filling speed is 30-40% / mm / s.

[0020] Preferably, the pressure maintaining includes one-stage pressure maintaining and two-stage pressure maintaining;

[0021] The pressure of the first stage of pressure maintenance is 45-55mpa / kgf, and the speed is 8-12% / mm / s;

[0022] The pressure of the second stage pressure holding is 100-120 MPa / kgf, and the speed is 12-18% / mm / s.

[0023] More preferably, the pressure of the pressure-maintaining stage is 48-52 MPa / kgf, and the speed is 8-10% / mm / s.

[0024] More preferably, the pressure of the pressure-maintaining stage is 50 mpa / kgf and the speed is 10% / mm / s.

[0025] More preferably, the pressure of the second stage pressure maintaining is 100-110 MPa / kgf, and the speed is 12-15% / mm / s.

[0026] More preferably, the pressure of the second stage pressure maintaining is 110 mpa / kgf, and the speed is 15% / mm / s.

[0027] A third aspect of the present invention provides an application of a composite material of a high-gloss black material and a laser-engraved white material in the field of laser engraving processing.

[0028] A fourth aspect of the present invention provides a method for applying a composite material of a high-gloss black material and a laser-engraved white material in the field of laser engraving.

[0029] Specifically, the following steps are included:

[0030] The prepared high-gloss black material laser-engraved white composite material is fixed, and the laser-engraved content is projected onto the surface of the composite material. The laser-engraving parameters are set including: power 11.5-12.5W, frequency 55-65KHz, speed 1400-1600 mm / s.

[0031] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0032] The present invention adds raw materials such as polymethyl methacrylate, acrylonitrile, styrene, etc., and reasonably adjusts the proportion of each raw material and laser carving parameters, so that the product meets the demand of highlighting the white characteristics of the surface of black high-gloss material, and can form a stable process, reduce the number of processes, and reduce the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a rendering of a laser engraving obtained in Example 1 of the present invention;

[0034] Figure 2 This is a rendering of a laser engraving obtained in Comparative Example 1 of the present invention;

[0035] Figure 3This is a rendering of a laser engraving obtained in Comparative Example 2 of the present invention;

[0036] Figure 4 This is a rendering of a laser engraving obtained in comparative example 3 of the present invention;

[0037] Figure 5 This is a rendering of the laser engraving obtained in comparative example 4 of the present invention. DETAILED DESCRIPTION

[0038] In order to make the technical scheme of the present invention more clearly understood by those skilled in the art, the following embodiments are listed for illustration. It should be pointed out that the following embodiments do not limit the protection scope of the present invention.

[0039] Unless otherwise specified, the raw materials, reagents or devices used in the following examples can be obtained from conventional commercial sources or by existing known methods.

[0040] Example 1

[0041] A composite material of high-gloss black material and laser-engraved white, and a preparation method and application thereof.

[0042] The raw materials of the composite materials of high gloss black material laser engraving white are as follows:

[0043] In parts by weight, the polymethyl methacrylate comprises 40 parts, acrylonitrile 21 parts, styrene 27 parts, toughening agent 6 parts, flame retardant 4 parts, coupling agent 1 part, antioxidant 0.1 part, light stabilizer 0.4 part and black masterbatch 2 parts.

[0044] The preparation method is as follows:

[0045] The raw materials are mixed to obtain plastic particles, which are then baked in an oven at 80°C for 5 hours to reduce the moisture content of the plastic particles to less than 0.05%. The plastic particles are then placed on a 1080T Haitian injection molding machine. First, high-temperature stirring and melting are carried out in the barrel, and the barrel has five temperature settings, among which the nozzle temperature is 255°C, the first section temperature is 250°C, the second section temperature is 240°C, the third section temperature is 230°C, and the fourth section temperature is 210°C; after the high-temperature stirring and melting of the barrel, the plastic particles enter the mold for product molding, among which the hot runner temperature is set to 255°C, and the molding mold temperature is controlled to 58°C. When filling the plastic particles, the pressure is set to 120mpa / kgf, the filling speed is 30% / mm / s, and the filling is completed within 5s. During this period, two pressure maintenance stages are performed: the first stage pressure is 50mpa / kgf, the speed is 10% / mm / s, and it is maintained for 1s; the second stage pressure is 110mpa / kgf, the speed is 15% / mm / s, and it is maintained for 10s; the product is cooled in the mold for 15s, then the mold is opened and taken out, and after cooling to room temperature, a composite material of high-gloss black material laser engraving white is obtained.

[0046] The application methods of high-gloss black material laser-engraved white composite materials in the field of laser engraving are as follows:

[0047] Place the formed high-gloss black material laser-engraved white composite material on the laser engraving workbench and fix it, project the laser engraving content onto the surface of the high-gloss black material laser-engraved white composite material, so that the laser engraving pattern produces a height difference that matches the surface of the high-gloss black material laser-engraved white composite material. After confirming the laser engraving position, set the laser engraving parameters: power 12W, frequency 60KHz, speed 1500 mm / s, laser engraving switch delay -200 microseconds, light off delay 100 microseconds, corner delay 100 microseconds, laser engraving advanced pattern outer contour engraving and then pattern internal arch filling engraving, arch path spacing 0.05mm. After the engraving is completed, confirm the status.

[0048] Comparative Example 1

[0049] A composite material of high-gloss black material and laser-engraved white, and a preparation method and application thereof.

[0050] The difference from Example 1 is that the power of the laser engraving parameter in Comparative Example 1 is 9W.

[0051] Comparative Example 2

[0052] A composite material of high-gloss black material and laser-engraved white, and a preparation method and application thereof.

[0053] The difference from Example 1 is that the power of the laser engraving parameter in Comparative Example 2 is 13.5W.

[0054] Comparative Example 3

[0055] A composite material of high-gloss black material and laser-engraved white, and a preparation method and application thereof.

[0056] The difference from Example 1 is that the power of the laser engraving parameter in Comparative Example 3 is 15W.

[0057] Comparative Example 4

[0058] A composite material of high-gloss black material and laser-engraved white, and a preparation method and application thereof.

[0059] The difference from Example 1 is that the method for applying the composite material of high-gloss black material laser-engraved white in comparative example 4 in the field of laser engraving processing is as follows: using a printing process, spraying or printing white fonts on the surface of the composite material of high-gloss black material laser-engraved white, and then spraying a layer of protective paint after the white fonts are printed.

[0060] Laser engraving effect Figures 1 to 5 As shown, Figure 1The radium engraving piece is made in Example 1 of the present invention. The radium engraving piece can highlight white text or patterns on the surface of black high-gloss material. Figure 2 The laser engraving piece obtained in comparative example 1 cannot display white color, but turns into grayish white color because the laser engraving power is too low. Figures 3-4 The laser engraving parts obtained in comparative examples 2 to 3 cannot show white, but turn into burnt yellow and black because the laser engraving power is too high. Therefore, laser engraving power that is too low or too high will affect the laser engraving effect of the composite material of high-gloss black material laser engraving white. Figure 5 This is a rendering of a spray-printed part. In Example 4, the spray-printed part produced through the spray-printing process lacks a bright outer surface and does not meet the appearance requirements. In addition, since the font or pattern is realized through printing, the surface needs to be protected after printing, which requires more steps.

[0061] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution obtained by any modification, equivalent replacement, improvement, etc. made by a person skilled in the art based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art shall be within the scope of protection determined by the claims.

Claims

1. A composite material of high gloss black material and laser engraved white, characterized in that: The raw materials of the composite material of high-gloss black material laser engraved white include: polymethyl methacrylate, acrylonitrile, styrene, toughening agent, flame retardant, coupling agent, antioxidant, light stabilizer, and black masterbatch.

2. The composite material of high gloss black material laser engraved white according to claim 1, characterized in that: In parts by weight, the polymethyl methacrylate comprises 35 to 45 parts, acrylonitrile 20 to 30 parts, styrene 25 to 35 parts, toughening agent 5 to 8 parts, flame retardant 2 to 5 parts, coupling agent 1 to 2 parts, antioxidant 0.1 to 0.4 parts, light stabilizer 0.4 to 1 parts, and black masterbatch 2 to 5 parts.

3. The composite material of high gloss black material and laser-engraved white material according to claim 1, characterized in that: In parts by weight, the polymethyl methacrylate comprises 38 to 42 parts, acrylonitrile 20 to 25 parts, styrene 25 to 30 parts, toughening agent 5 to 8 parts, flame retardant 2 to 5 parts, coupling agent 1 to 2 parts, antioxidant 0.1 to 0.4 parts, light stabilizer 0.4 to 1 parts, and black masterbatch 2 to 5 parts.

4. The method for preparing the composite material of high gloss black material laser engraved white according to any one of claims 1 to 3, characterized in that: The following steps are involved: The raw materials are mixed to obtain plastic particles, and the plastic particles are subjected to material baking, high-temperature stirring and melting, filling, pressure holding, and injection molding to obtain a composite material of high-gloss black material and laser-engraved white.

5. The preparation method according to claim 4, characterized in that: The baking time is 4 to 10 hours, and the temperature is 65 to 95°C.

6. The preparation method according to claim 4, characterized in that: The temperature settings for the high-temperature stirring and melting include: nozzle temperature of 253-257°C; first stage temperature of 248-252°C; second stage temperature of 238-242°C; third stage temperature of 228-232°C; and fourth stage temperature of 208-212°C.

7. The preparation method according to claim 4, characterized in that: The filling pressure is 100-120 mpa / kgf, and the filling speed is 30-40% / mm / s.

8. The preparation method according to claim 4, characterized in that: The pressure holding includes one-stage pressure holding and two-stage pressure holding; The pressure of the first stage of pressure maintenance is 45-55mpa / kgf, and the speed is 8-12% / mm / s; The pressure of the second stage pressure holding is 100-120 MPa / kgf, and the speed is 12-18% / mm / s.

9. Application of the composite material of high gloss black material and laser-engraved white material according to any one of claims 1 to 3 in the field of laser engraving processing.

10. The method of application according to claim 9, characterized in that: The following steps are involved: Fix the prepared high-gloss black material laser-engraved white composite material, project the laser-engraved content onto the surface of the composite material, and set the laser-engraving parameters: power 11.5-12.5W, frequency 55-65KHz, speed 1400-1600 mm / s.

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