A kind of multi-color antibacterial film layer and its preparation method and application

Abstract

The invention discloses a multi-color antibacterial film layer and a preparation method thereof, comprising the following steps: (1) cleaning a substrate; (2) placing the substrate processed in step (1) into a vacuum ion plating equipment for vacuuming and preheating , and carry out surface activation treatment; (3) carry out titanium coating on the substrate processed in step (2) in the same equipment; (4) continue to carry out multi-color antibacterial film plating on the substrate processed in step (3) in the same equipment ; (5) Shut down and take out the substrate. Coating the multi-color antibacterial film on the substrate processed in step (3) includes the following steps: when the vacuum degree reaches 0.5×10 ‑1 ~3.0x10 ‑1 When Pa, argon gas is introduced, and the flow rate is controlled at 150-280cm 3 / min; set the grating change range to 48 to 75 degrees; change the flow of argon gas, and introduce acetylene and nitrogen; turn on the ion power supply, and turn on the silver target and other targets. The multi-color antibacterial film layer can be used for hardware such as tableware and kitchen utensils, and has the advantages of simple process, good antibacterial effect, many color choices, high production efficiency and low cost.

Description

technical field [0001] The invention belongs to the technical field of antibacterial film layers, in particular to a multi-color antibacterial film layer and a preparation method and application thereof. Background technique [0002] Physical vapor deposition (Physical Vapour Deposition, PVD for short), also known as vacuum coating, refers to the use of physical methods under vacuum conditions to vaporize the surface of the target (both plating, solid or liquid) into gaseous atoms, molecules or Partially ionized into ions and deposited on the surface of the substrate (the product to be coated) through a low-pressure gas (or plasma) process to have certain functions (such as high wear resistance, high hardness, high temperature resistance, rust prevention, electrical conductivity) , insulation, corrosion resistance, etc.) or a certain appearance (such as high or low brightness, one or more colors, etc.) of the film technology. Water plating is known and understood as "electr...

AI Technical Summary

Problems solved by technology

[0007] 1. The utilization rate of the target is low

The target used in vacuum sputtering plating is a large-area plate-shaped target, and the reaction process also requires the use of a strong magnetic field, which causes the part of the plate-shaped target close to the strong magnetic field line to be consumed faster, so the overall consumption of the target is uneven. When the part that consumes fast is about to be consumed, the target needs to be replaced, otherwise it will cause overheating and short circuit. At this time, the part that consumes slowly still has a lot of material that has not been utilized, so the utilization rate of the target is low

[0008] 2. The ability of winding plating is poor, the coverage is not complete, and the film formation is uneven

Since vacuum sputtering requires a strong power supply to generate a strong magnetic field, the particles will be affected by the strong magnetic field lines and move in a fixed direction, which does not have discreteness, resulting in strong winding plating ability, and cannot evenly cover the slits and grooves of the substrate. , inner hole part

[0009] 3. The film forming speed is slow and the coating time is long. The entire coating time often takes tens of minutes or even several hours, and the production efficiency is low.

[0010] 4. The film layer is not fine and smooth enough

Since vacuum sputtering requires glow discharge, glow discharge tends to generate certain impurity gases on the substrate and the materials of the coating equipment, which cannot maintain a high vacuum. Part of the impurities will participate in the coating reaction, which has a certain impact on the purity of the film material. Affected, the film layer is not fine and smooth enough, and there may even be bubbles

[0011] 5. The crystals of the film material are relatively large, which affects the fineness of the film

[0012] 6. The adhesion of the film layer is not strong enough

[0013] 7. Coating equipment is complex and expensive, leading to high production costs, which limits the range of products that want to use this technology (only high-value products can bear such production costs), which is not conducive to the entry of antibacterial film technology into the choice of consumers

This brings about two defects. One is that the transfer process takes time, which prolongs the time of the entire coating process, requires additional manpower and material resources, and increases the cost; Wear and tear, affect the antibacterial effect and color appearance of the antibacterial film layer in the subsequent steps

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