Coating method for inner surface of chemical solvent bottle

Abstract

The invention discloses a coating method for the inner surface of a chemical solvent bottle, which comprises the following steps: firstly, depositing a Cr binding layer on the inner surface of the chemical solvent bottle by adopting magnetron sputtering ion plating, then, depositing a CrC transition layer on the Cr binding layer by adopting magnetron sputtering ion plating, then, depositing an upper compound layer on the CrC transition layer by adopting magnetron sputtering ion plating, and finally, depositing a lower compound layer on the inner surface of the chemical solvent bottle by adopting magnetron sputtering ion plating. The compound layer comprises Cr, T and DLC, the thickness of the compound layer is 10-15 microns, and finally, a fluorine layer is formed on the compound layer by adopting magnetron sputtering ion plating, so that the inner surface of the chemical solvent bottle is smooth, compact and non-oleophylic, a chemical solvent cannot be attached to the surface of the chemical solvent bottle, and the chemical solvent bottle is easy to clean and the solvent is easy to pour.

Description

Technical Field

[0001] The invention relates to the technical field of chemical solvent bottles, in particular to a coating method for the inner surface of a chemical solvent bottle. Background Art

[0002] At present, in the chemical field, oxidation reactions are easily formed during the transportation and storage of chemical solvents, and some solvents are relatively viscous and will stick to the inner surface of the carrying container, which also brings certain difficulties to the cleaning work. Patent application CN1351676A discloses a DLC film, a plastic container coated with a DLC film, and its production equipment and method. The coating method is mainly anti-oxidation, but it does not solve the problem of solvent viscosity, difficulty in cleaning and dumping. Summary of the invention

[0003] In view of the deficiencies in the prior art, the embodiment of the present invention provides a coating method for the inner surface of a chemical solvent bottle, comprising:

[0004] A Cr bonding layer is deposited on the inner surface of a chemical solvent bottle by magnetron sputtering ion plating;

[0005] Depositing a CrC transition layer on the Cr bonding layer by magnetron sputtering ion plating;

[0006] Depositing a composite layer on the CrC transition layer by magnetron sputtering ion plating; wherein the composite layer comprises Cr, Ti and DLC, and the thickness of the composite layer is 10-15 μm;

[0007] A fluorine layer is formed on the composite layer by magnetron sputtering ion plating.

[0008] As a preferred solution, the fluorine layer is formed on the composite layer by magnetron sputtering ion plating, specifically comprising:

[0009] Magnetron sputtering ion plating was used, CF4 was used as the doping gas, and a fluorine layer was doped on the composite layer, wherein the CF4 flow rate was 150sccm, zero bias was used, the ion energy was 300eV, and the ion beam density was 100uA / cm 2 , at a vacuum degree of 3.0×10 -4 In a vacuum environment, the doping time is 25 minutes and the fluorine deposition rate is 0.5-0.70 / s.

[0010] As a preferred solution, the thickness of the fluorine layer is 50.

[0011] As a preferred solution, the method of depositing a Cr bonding layer on the inner surface of the chemical solvent bottle by magnetron sputtering ion plating specifically includes:

[0012] Magnetron sputtering ion plating was used and the vacuum was reduced to 1.0×10-3 Pa or above, and then argon is introduced, the gas pressure is controlled at 1.0-1.5 Pa, the Cr target current is 1.5 A, the negative bias voltage is 100 V, and the bias frequency is 250 kHz; wherein the thickness of the Cr bonding layer is 4-6 μm.

[0013] As a preferred solution, the thickness of the Cr bonding layer is 5 μm.

[0014] As a preferred solution, the CrC transition layer is deposited on the Cr bonding layer by magnetron sputtering ion plating, specifically comprising:

[0015] Magnetron sputtering ion plating is adopted to control the Cr target to continue working, and the control power of the planar C target is turned on, and the power of the planar C target is adjusted to 5KW, and a CrC transition layer is prepared on the Cr bonding layer, and the thickness of the CrC transition layer is 7-9μm.

[0016] As a preferred solution, the thickness of the CrC transition layer is 8 μm.

[0017] As a preferred solution, the composite layer is deposited on the CrC transition layer by magnetron sputtering ion plating, specifically comprising:

[0018] Magnetron sputtering ion plating was used and the vacuum was reduced to 1.2×10 -3 Pa or above, and then nitrogen is introduced, the gas pressure is controlled at 1.0 Pa, and three targets are sputtered together, among which the Cr target current is 1.0A, the Ti target current is 1.5A, the C target current is 2.0A, the negative bias voltage is 100V, and the bias frequency is 120kHz.

[0019] As a preferred solution, before depositing the Cr bonding layer on the inner surface of the chemical solvent bottle by magnetron sputtering ion plating, the method further comprises:

[0020] Roughening of the inner bottom surface of the chemical solvent bottle.

[0021] As a preferred solution, after the inner bottom surface of the chemical solvent bottle is subjected to surface roughness treatment, the roughness Ra of the inner bottom surface of the chemical solvent bottle is 1-2 μm.

[0022] Compared with the prior art, the beneficial effect of the embodiments of the present invention is that: the embodiments of the present invention provide a coating method for the inner surface of a chemical solvent bottle, first, a Cr bonding layer is deposited on the inner surface of the chemical solvent bottle by magnetron sputtering ion plating, then, a CrC transition layer is deposited on the Cr bonding layer by magnetron sputtering ion plating, and then, a composite layer is deposited on the CrC transition layer by magnetron sputtering ion plating, wherein the composite layer includes Cr, Ti and DLC, and the thickness of the composite layer is 10-15 μm, and finally, a fluorine layer is formed on the composite layer by magnetron sputtering ion plating, so that the inner surface of the chemical solvent bottle is smooth, dense and non-oleophilic, so that the chemical solvent cannot adhere to its surface, thereby facilitating the cleaning of the chemical solvent bottle and the pouring of the solvent. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic flow chart of a coating method for the inner surface of a chemical solvent bottle in an embodiment of the present invention. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1 , which is a schematic flow chart of a coating method for the inner surface of a chemical solvent bottle in an embodiment of the present invention.

[0026] The coating method for the inner surface of a chemical solvent bottle according to an embodiment of the present invention comprises:

[0027] Step S101, depositing a Cr bonding layer on the inner surface of a chemical solvent bottle by magnetron sputtering ion plating;

[0028] Step S102, depositing a CrC transition layer on the Cr bonding layer by magnetron sputtering ion plating;

[0029] Step S103, depositing a composite layer on the CrC transition layer by magnetron sputtering ion plating; wherein the composite layer comprises Cr, Ti and DLC, and the thickness of the composite layer is 10-15 μm;

[0030] Step S104: forming a fluorine layer on the composite layer by magnetron sputtering ion plating.

[0031] In an embodiment of the present invention, first, a Cr bonding layer is deposited on the inner surface of a chemical solvent bottle by magnetron sputtering ion plating, then, a CrC transition layer is deposited on the Cr bonding layer by magnetron sputtering ion plating, and then, a composite layer is deposited on the CrC transition layer by magnetron sputtering ion plating, wherein the composite layer includes Cr, Ti and DLC, and the thickness of the composite layer is 10-15 μm. Finally, a fluorine layer is formed on the composite layer by magnetron sputtering ion plating, so that the inner surface of the chemical solvent bottle is smooth, dense and non-oleophilic, so that the chemical solvent cannot adhere to its surface, thereby facilitating the cleaning of the chemical solvent bottle and the pouring of the solvent.

[0032] In an optional embodiment, the step S101 of "depositing a Cr bonding layer on the inner surface of the chemical solvent bottle by magnetron sputtering ion plating" specifically includes:

[0033] Magnetron sputtering ion plating was used and the vacuum was reduced to 1.0×10 -3 Pa or above vacuum, and then argon is introduced, the pressure is controlled at 1.0-1.5pa, the Cr target current is 1.5A, the negative bias voltage is 100V, and the bias frequency is 250kHz; wherein the thickness of the Cr bonding layer is 4-6μm, for example, it can be 4μm, 5μm, 6μm, etc., and its specific value can be set according to actual use requirements, and no further details are given here. Preferably, the thickness of the Cr bonding layer is 5μm.

[0034] In an optional embodiment, the step S102 of "depositing a CrC transition layer on the Cr bonding layer by magnetron sputtering ion plating" specifically includes:

[0035] Adopt magnetron sputtering ion plating, control the Cr target to continue working, turn on the control power of the planar C target, adjust the power of the planar C target to 5KW, and prepare a CrC transition layer on the Cr bonding layer. The thickness of the CrC transition layer is 7-9μm, for example, 7μm, 8μm, 9μm, etc. The specific value can be set according to the actual use requirements, and no further details are given here. Preferably, the thickness of the CrC transition layer is 8μm.

[0036] In this embodiment, after the Cr bonding layer is prepared, the Cr target is kept working, and its control parameters such as current, negative bias, bias frequency, etc. remain unchanged, and the control power of the planar C target is turned on, and the two target materials are sputtered simultaneously to form a CrC transition layer.

[0037] In an optional embodiment, the step S103 of "depositing a composite layer on the CrC transition layer by magnetron sputtering ion plating" specifically includes:

[0038] Magnetron sputtering ion plating was used and the vacuum was reduced to 1.2×10-3 Pa or above vacuum degree, and then nitrogen is introduced (exemplarily, the purity of the introduced nitrogen is 99.999%), the gas pressure is controlled at 1.0pa, and three targets are sputtered together, wherein the Cr target current is 1.0A, the Ti target current is 1.5A, the C target current is 2.0A, the negative bias voltage is 100V, the bias frequency is 120kHz, the thickness of the composite layer is 10-15μm, for example, it can be 10μm, 11μm, 12μm, 13μm, 14μm, 15μm, etc., and its specific value can be set according to actual use requirements, which will not be further elaborated here.

[0039] In a specific implementation, the Cr / Ti / DLC composite layer deposited by magnetron sputtering ion plating is used to make the chemical solvent bottle have good corrosion resistance and friction reduction performance.

[0040] In an optional embodiment, the step S104 of "forming a fluorine layer on the composite layer by magnetron sputtering ion plating" specifically includes:

[0041] The fluorine layer was doped on the composite layer by magnetron sputtering ion plating with CF4 as the doping gas, wherein the CF4 flow rate was 150sccm, zero bias, ion energy was 300eV, ion beam density was 100uA / cm2, and vacuum degree was 3.0×10 -4 In a vacuum environment, the doping time is 25 minutes and the fluorine deposition rate is 0.5-0.70 / s.

[0042] In this embodiment, in order to prevent fluorine ions from etching the deposited diamond-like carbon film, zero bias doping with fluorine is selected. For example, the thickness of the fluorine layer is 50. Of course, the thickness of the fluorine layer can also be set to other values ​​according to actual use requirements, which will not be described in detail here.

[0043] In an optional embodiment, before the step S101 of "depositing a Cr bonding layer on the inner surface of the chemical solvent bottle by magnetron sputtering ion plating", the method further includes:

[0044] Roughening of the inner bottom surface of the chemical solvent bottle.

[0045] It should be noted that the inner surface of a conventional chemical solvent bottle is usually designed to be very smooth. This is because the greater the roughness of the inner surface of a conventional chemical solvent bottle, the easier it is for the solvent to adhere, which is not conducive to completely pouring out the solvent in the chemical solvent bottle. On the contrary, in this embodiment, the inner bottom surface of the chemical solvent bottle is subjected to roughness treatment, and the following coatings are sequentially performed: a Cr bonding layer, a CrC transition layer, a composite layer, and a fluorine layer, so that the Cr bonding layer, the CrC transition layer, the composite layer, and the fluorine layer can be securely plated on the chemical solvent bottle. The Cr bonding layer, the CrC transition layer, the composite layer, and the fluorine layer of the embodiment of the present invention can prevent the chemical solvent from adhering to its surface, thereby facilitating the cleaning of the chemical solvent bottle and pouring out the solvent. Therefore, the above-mentioned technical prejudice that the greater the roughness of the inner surface of the chemical solvent bottle, the easier it is for the solvent to adhere can be overcome. Assuming that only the inner surface of the chemical solvent bottle is subjected to roughness treatment without coating, this technical prejudice cannot be overcome. It can be seen that the two technical means of roughness treatment of the inner bottom surface of the chemical solvent bottle and sequential coating of the Cr bonding layer, the CrC transition layer, the composite layer, and the fluorine layer play a synergistic role. In addition, only the inner bottom surface of the chemical solvent bottle is roughened instead of the entire inner surface of the chemical solvent bottle. The roughening of the inner bottom surface of the chemical solvent bottle can provide sufficient adhesion for the Cr bonding layer, CrC transition layer, composite layer and fluorine layer, and the processing of the bottle bottom is also relatively easier than the bottle side wall, which is more in line with actual application needs.

[0046] Further, after the surface roughness treatment is performed on the inner bottom surface of the chemical solvent bottle, the roughness Ra of the inner bottom surface of the chemical solvent bottle is 1-2μm, for example, it can be 1μm, 1.1μm, 1.2μm, 1.3μm, 1.4μm, 1.5μm, 1.6μm, 1.7μm, 1.8μm, 1.9μm, 2μm, etc. Of course, the roughness Ra of the inner bottom surface of the chemical solvent bottle can also be set to other values ​​according to actual use requirements, which will not be further elaborated here. If the roughness of the inner bottom surface of the chemical solvent bottle is too large, it is easy to form some areas that are difficult to plate. If the roughness of the inner bottom surface of the chemical solvent bottle is too small, it is difficult to make the Cr bonding layer, CrC transition layer, composite layer and fluorine layer be reliably plated on the chemical solvent bottle. In this embodiment, the roughness Ra of the inner bottom surface of the chemical solvent bottle is set to 1-2μm, so that the Cr bonding layer, CrC transition layer, composite layer and fluorine layer can be firmly plated on the chemical solvent bottle, while also avoiding the roughness of the inner bottom surface of the chemical solvent bottle being too large to affect the coating effect.

[0047] Compared with the prior art, the beneficial effect of the embodiments of the present invention is that: the embodiments of the present invention provide a coating method for the inner surface of a chemical solvent bottle, first, a Cr bonding layer is deposited on the inner surface of the chemical solvent bottle by magnetron sputtering ion plating, then, a CrC transition layer is deposited on the Cr bonding layer by magnetron sputtering ion plating, and then, a composite layer is deposited on the CrC transition layer by magnetron sputtering ion plating, wherein the composite layer includes Cr, Ti and DLC, and the thickness of the composite layer is 10-15 μm, and finally, a fluorine layer is formed on the composite layer by magnetron sputtering ion plating, so that the inner surface of the chemical solvent bottle is smooth, dense and non-oleophilic, so that the chemical solvent cannot adhere to its surface, thereby facilitating the cleaning of the chemical solvent bottle and the pouring of the solvent.

[0048] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A coating method for the inner surface of a chemical solvent bottle, characterized in that: include: A Cr bonding layer is deposited on the inner surface of a chemical solvent bottle by magnetron sputtering ion plating; Depositing a CrC transition layer on the Cr bonding layer by magnetron sputtering ion plating; Depositing a composite layer on the CrC transition layer by magnetron sputtering ion plating; wherein the composite layer comprises Cr, Ti and DLC, and the thickness of the composite layer is 10-15 μm; A fluorine layer is formed on the composite layer by magnetron sputtering ion plating.

2. The coating method for the inner surface of a chemical solvent bottle according to claim 1, characterized in that: The method of forming a fluorine layer on the composite layer by magnetron sputtering ion plating specifically includes: Magnetron sputtering ion plating was used, CF4 was used as the doping gas, and a fluorine layer was doped on the composite layer, wherein the CF4 flow rate was 150sccm, zero bias was used, the ion energy was 300eV, and the ion beam density was 100uA / cm 2 , at a vacuum degree of 3.0×10 -4 In a vacuum environment, the doping time is 25 minutes and the fluorine deposition rate is 0.5-0.7 / s.

3. The coating method for the inner surface of a chemical solvent bottle as claimed in claim 2, characterized in that: The thickness of the fluorine layer is 50.

4. The coating method for the inner surface of a chemical solvent bottle according to claim 1, characterized in that: The method of depositing a Cr bonding layer on the inner surface of a chemical solvent bottle by magnetron sputtering ion plating specifically includes: Magnetron sputtering ion plating was used and the vacuum was reduced to 1.0×10 -3 Pa or above, and then argon is introduced, the gas pressure is controlled at 1.0-1.5 Pa, the Cr target current is 1.5 A, the negative bias voltage is 100 V, and the bias frequency is 250 kHz; wherein the thickness of the Cr bonding layer is 4-6 μm.

5. The coating method for the inner surface of a chemical solvent bottle as claimed in claim 4, characterized in that: The thickness of the Cr bonding layer is 5 μm.

6. The coating method for the inner surface of a chemical solvent bottle as claimed in claim 4, characterized in that: The method of depositing a CrC transition layer on the Cr bonding layer by magnetron sputtering ion plating specifically includes: Magnetron sputtering ion plating is adopted to control the Cr target to continue working, and the control power of the planar C target is turned on, and the power of the planar C target is adjusted to 5KW, and a CrC transition layer is prepared on the Cr bonding layer, and the thickness of the CrC transition layer is 0-9μm.

7. The coating method for the inner surface of a chemical solvent bottle as claimed in claim 6, characterized in that: The thickness of the CrC transition layer is 8 μm.

8. The coating method for the inner surface of a chemical solvent bottle according to claim 1, characterized in that: The method of depositing the composite layer on the CrC transition layer by magnetron sputtering ion plating specifically includes: Magnetron sputtering ion plating was used and the vacuum was reduced to 1.2×10 -3 Pa or above, and then nitrogen is introduced, the gas pressure is controlled at 1.0 Pa, and three targets are sputtered together, among which the Cr target current is 1.0A, the Ti target current is 1.5A, the C target current is 2.0A, the negative bias voltage is 100V, and the bias frequency is 120kHz.

9. The coating method for the inner surface of a chemical solvent bottle according to any one of claims 1 to 8, characterized in that: Before depositing the Cr bonding layer on the inner surface of the chemical solvent bottle by magnetron sputtering ion plating, the method further comprises: Roughening of the inner bottom surface of the chemical solvent bottle.

10. The coating method for the inner surface of a chemical solvent bottle according to claim 9, characterized in that: After the inner bottom surface of the chemical solvent bottle is subjected to surface roughness treatment, the roughness Ra of the inner bottom surface of the chemical solvent bottle is 1-2 μm.

Images