A photovoltaic special dry vacuum pump lubricating oil and a photovoltaic special dry vacuum pump

Abstract

The application provides a photovoltaic special dry vacuum pump lubricating oil and a photovoltaic special dry vacuum pump. The photovoltaic special dry vacuum pump lubricating oil comprises the following components in percentage by mass: 0.5-4% of an ionic liquid, 0.2-2% of an anti-wear agent, 0.01-0.5% of a metal deactivator, and the balance of base oil. The photovoltaic special dry vacuum pump lubricating oil has excellent corrosion resistance, rust resistance and extreme pressure and wear resistance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lubricating oil, in particular to a photovoltaic special dry vacuum pump lubricating oil and a photovoltaic special dry vacuum pump. BACKGROUND

[0002] Photovoltaic refers to a power generation system that converts solar radiation energy into electric energy directly through the photovoltaic effect of a photovoltaic cell, and has good development prospects. Vacuum pump equipment is widely used in the photovoltaic field, such as silicon wafer processing and thin film deposition. With the update and iteration of technology, the proportion of dry vacuum pumps in the photovoltaic market is rising significantly. Dry vacuum pumps have high requirements for the corrosion resistance, rust resistance and extreme pressure and wear resistance of lubricating oil.

[0003] Although the prior art can improve the performance (such as corrosion resistance, rust resistance and extreme pressure and wear resistance) of the photovoltaic special dry vacuum pump lubricating oil to some extent, the improvement of the performance of the photovoltaic special dry vacuum pump lubricating oil is still limited, especially the corrosion resistance of the photovoltaic special dry vacuum pump lubricating oil still cannot meet the current demand. Therefore, it is urgent to provide a photovoltaic special dry vacuum pump lubricating oil with excellent corrosion resistance, rust resistance and extreme pressure and wear resistance. SUMMARY

[0004] The present application provides a photovoltaic special dry vacuum pump lubricating oil, which has excellent corrosion resistance, rust resistance and extreme pressure and wear resistance.

[0005] The present application provides a photovoltaic special dry vacuum pump, which comprises the above-mentioned photovoltaic special dry vacuum pump lubricating oil, has a longer service life and a wider range of use.

[0006] The present application provides a photovoltaic special dry vacuum pump lubricating oil, which comprises, by mass percentage:

[0007] ion liquid 0.5-4%;

[0008] anti-wear agent 0.2-2%;

[0009] metal deactivator 0.01-0.5%;

[0010] the balance is base oil;

[0011] wherein the ion liquid comprises the following structure:

[0012]

[0013] wherein n is a positive integer selected from 14-16.

[0014] The photovoltaic dedicated dry vacuum pump lubricating oil as described above, wherein the ion liquid comprises, in terms of mass percentage:

[0015] Ion liquid 1-3%;

[0016] Anti-wear agent 0.5-1%;

[0017] Metal deactivator 0.05-0.2%;

[0018] The balance is base oil.

[0019] The photovoltaic dedicated dry vacuum pump lubricating oil as described above, wherein the mass ratio of the ion liquid to the anti-wear agent is 1:(0.5-0.7).

[0020] The photovoltaic dedicated dry vacuum pump lubricating oil as described above, wherein the anti-wear agent is selected from at least one of triphenyl phosphorothionate, dialkyldithiophosphoric acid ester and fatty phosphoric acid ester amine salt.

[0021] The photovoltaic dedicated dry vacuum pump lubricating oil as described above, wherein the metal deactivator is methyl benzotriazole.

[0022] The photovoltaic dedicated dry vacuum pump lubricating oil as described above, wherein the molar percentage content of nitrogen element in the methyl benzotriazole is 14%-16%.

[0023] The photovoltaic dedicated dry vacuum pump lubricating oil as described above, wherein the base oil is trimellitate.

[0024] The photovoltaic dedicated dry vacuum pump lubricating oil as described above, wherein the saponification value of the trimellitate is 250-260 mgKOH / g.

[0025] The photovoltaic dedicated dry vacuum pump lubricating oil as described above, wherein the Noack evaporation loss of the trimellitate is ≤1.5%.

[0026] The present application also provides a photovoltaic dedicated dry vacuum pump, comprising the photovoltaic dedicated dry vacuum pump lubricating oil as described above.

[0027] The present application provides a photovoltaic dedicated dry vacuum pump lubricating oil, comprising ion liquid, anti-wear agent, metal deactivator and base oil in specific contents, and the ion liquid comprises the structure shown in formula 1. The photovoltaic dedicated dry vacuum pump lubricating oil of the present application has excellent corrosion resistance, rust resistance and extreme pressure and wear resistance, and has a wide application prospect.

[0028] The photovoltaic special dry vacuum pump of the present application has excellent corrosion resistance, rust resistance and extreme pressure wear resistance at the positions such as bearing due to the photovoltaic special dry vacuum pump lubricating oil, and has a longer service life and a wider application range. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0030] The first aspect of the present application provides a photovoltaic special dry vacuum pump lubricating oil, wherein the photovoltaic special dry vacuum pump lubricating oil comprises, by mass percentage:

[0031] ionic liquid 0.5-4%;

[0032] anti-wear agent 0.2-2%;

[0033] metal deactivator 0.01-0.5%;

[0034] the balance is base oil;

[0035] The ionic liquid comprises the following structure:

[0036]

[0037] wherein n is a positive integer selected from 14-16.

[0038] The present application does not limit the specific source of the ionic liquid, and the ionic liquid can be prepared by using the preparation method commonly used in the art, or the ionic liquid can be obtained by commercial purchase.

[0039] The present application does not make special limitations on the anti-wear agent, metal deactivator and base oil, and the anti-wear agent, metal deactivator and base oil can be selected from the anti-wear agent, metal deactivator and base oil commonly used in the art. The anti-wear agent, metal deactivator and base oil can be prepared by using the preparation method commonly used in the art, or the anti-wear agent, metal deactivator and base oil can be obtained by commercial purchase.

[0040] In the present application, the photovoltaic special dry vacuum pump lubricating oil comprises an ionic liquid of formula 1, an anti-wear agent, and a metal deactivator. On the one hand, the main component of the photovoltaic special dry vacuum pump lubricating oil is the ionic liquid of formula 1, which has good solubility and excellent compatibility when matched with other components. On the other hand, the specific content of the ionic liquid of formula 1, the specific content of the anti-wear agent, and the specific content of the metal deactivator are matched with each other, so that the photovoltaic special dry vacuum pump lubricating oil has excellent comprehensive performance. Specifically, the steel material, copper material, aluminum material, and magnesium material are placed in the photovoltaic special dry vacuum pump lubricating oil at 175℃ for 24h of oxidation corrosion treatment, and the mass of the copper material, steel material, aluminum material, and magnesium material does not change. The change in the kinematic viscosity of the photovoltaic special dry vacuum pump lubricating oil before and after the oxidation corrosion treatment is small, and the change in the acid value of the photovoltaic special dry vacuum pump lubricating oil before and after the oxidation corrosion treatment is small, so the photovoltaic special dry vacuum pump lubricating oil of the present application has excellent corrosion resistance. The copper sheet is placed in the photovoltaic special dry vacuum pump lubricating oil at 100℃ for 3h of corrosion treatment, and the corrosion grade of the copper sheet is 1b or above, so the photovoltaic special dry vacuum pump lubricating oil of the present application has excellent corrosion resistance. Furthermore, the FZG gear machine failure level of the photovoltaic special dry vacuum pump oil is high, the wear scar diameter is small, and the photovoltaic special dry vacuum pump oil has excellent extreme pressure and wear resistance. The liquid phase rust is qualified, and the photovoltaic special dry vacuum pump oil has excellent rust resistance.

[0041] Further, when the photovoltaic special dry vacuum pump lubricating oil comprises, by mass percentage:

[0042] ionic liquid 1-3%;

[0043] anti-wear agent 0.5-1%;

[0044] metal deactivator 0.05-0.2%;

[0045] and the balance is base oil, the photovoltaic special dry vacuum pump lubricating oil has more excellent comprehensive performance (extreme pressure and wear resistance, rust resistance, and corrosion resistance).

[0046] In some embodiments of the present application, in order to further improve the extreme pressure and wear resistance, rust resistance, and corrosion resistance of the photovoltaic special dry vacuum pump lubricating oil, and to broaden the application range of the photovoltaic special dry vacuum pump lubricating oil, the mass ratio of the ionic liquid to the extreme pressure and wear resistance agent is 1:(0.5-0.7).

[0047] In the present application, the raw materials of the anti-wear agent, metal deactivator, and base oil can be further selected in order to further improve the compatibility of each raw material and further improve the extreme pressure and wear resistance, rust resistance, and corrosion resistance of the photovoltaic special dry vacuum pump lubricating oil.

[0048] In some embodiments of the present application, the anti-wear agent is selected from at least one of triphenyl phosphorothionate, dialkyldithiophosphoric acid ester and fatty phosphoric acid ester amine salt.

[0049] In some embodiments of the present application, the metal deactivator is methyl benzotriazole.

[0050] Further, the molar percentage content of nitrogen element in the methyl benzotriazole is 14%-16%.

[0051] In some embodiments of the present application, the base oil is trimellitate.

[0052] Further, when the saponification value of the trimellitate is 250-260 mgKOH / g; and / or.

[0053] When the Noack evaporation loss of the trimellitate is ≤1.5%, the extreme pressure anti-wear property, the rust resistance and the corrosion resistance of the photovoltaic special dry vacuum pump lubricating oil can be better improved.

[0054] In the present application, the Noack evaporation loss of the trimellitate refers to the Noack evaporation loss of the trimellitate after the trimellitate is evaporated for 1 h at 250℃.

[0055] The photovoltaic special dry vacuum pump lubricating oil in some embodiments of the present application can be obtained by uniformly mixing the raw materials according to the above composition. The present application does not particularly limit the adding order, stirring rate and mixing temperature of the raw materials.

[0056] The photovoltaic special dry vacuum pump lubricating oil of the present application not only has relatively excellent comprehensive performance (extreme pressure anti-wear property, rust resistance and corrosion resistance), but also has simple preparation process, easy operation and wide application range.

[0057] The second aspect of the present application provides a photovoltaic special dry vacuum pump comprising the above-mentioned photovoltaic special dry vacuum pump lubricating oil.

[0058] In the present application, since the bearing and the like of the photovoltaic special dry vacuum pump contain the above-mentioned photovoltaic special dry vacuum pump lubricating oil, the service life is long, and the photovoltaic special dry vacuum pump can be widely applied in the photovoltaic field, such as used in silicon wafer processing, thin film deposition and the like.

[0059] Hereinafter, the technical solutions of the present application are further illustrated in combination with specific examples.

[0060] The structure formula of the ionic liquid in each example and comparative example is formula 1, which is obtained by commercial purchase;

[0061]

[0062] wherein n is a positive integer;

[0063] The molar percentage content of nitrogen element in the methyl benzotriazole is 14.6%;

[0064] The fatty phosphate ester amine salt is AW6110 of the KING company;

[0065] The saponification value of the trimellitate ester is 252 mgKOH / g, and the loss of the trimellitate ester by the Novaevaporation at 250°C for 1 h is 0.9%.

[0066] Example 1

[0067] The composition of the photovoltaic special dry vacuum pump lubricating oil of this example is shown in Table 1.

[0068] Table 1

[0069] Name Mass % content Ionic liquid (n=14) 0.8 triphenyl phosphorothionates 1.2 methyl benzotriazole 0.3 trimellitate ester 97.7

[0070] Example 2

[0071] The composition of the photovoltaic special dry vacuum pump lubricating oil of this example is shown in Table 2.

[0072] Table 2

[0073] Name Mass % content Ionic liquid (n=15) 1.5 dialkyl dithiophosphate 0.5 methyl benzotriazole 0.1 trimellitate ester 97.9

[0074] Example 3

[0075] The composition of the photovoltaic special dry vacuum pump lubricating oil of this example is shown in Table 3.

[0076] Table 3

[0077] Name Mass % content Ionic liquid (n=16) 2 fatty phosphonate amine salt 1 methyl benzotriazole 0.05 trimellitate ester 96.95

[0078] Example 4

[0079] The composition of the photovoltaic special dry vacuum pump lubricating oil of this example is shown in Table 4.

[0080] Table 4

[0081] Name Mass % Ionic liquid (n=14) 0.5 triphenyl phosphorothionates 1 dialkyl dithiophosphate 1 methyl benzotriazole 0.5 trimellitate ester 97

[0082] Example 5

[0083] The composition of the photovoltaic special dry vacuum pump lubricating oil of this example is shown in Table 5.

[0084] Table 5

[0085] Name Mass % content Ionic liquid (n=16) 4 dialkyl dithiophosphate 0.2 methyl benzotriazole 0.01 trimellitate ester 95.79

[0086] Comparative Example 1

[0087] The composition of the photovoltaic special dry vacuum pump lubricating oil of this example is shown in Table 6.

[0088] Table 6

[0089] Name Mass % content triphenyl phosphorothionates 1.2 methyl benzotriazole 0.3 trimellitate ester 98.5

[0090] Comparative Example 2

[0091] The composition of the photovoltaic dry vacuum pump lubricating oil of the present comparative example is shown in Table 7.

[0092] Table 7

[0093] Name Mass % content Ionic liquid (n=2) 1.5 dialkyl dithiophosphate 0.5 methyl benzotriazole 0.1 trimellitate ester 97.9

[0094] Comparative Example 3

[0095] The composition of the photovoltaic dry vacuum pump lubricating oil of the present comparative example is shown in Table 8.

[0096] Table 8

[0097] Name Mass % Ionic liquid (n=16) 5 fatty phosphonate amine salt 0.1 methyl benzotriazole 0.005 trimellitate ester 94.895

[0098] Comparative Example 4

[0099] The composition of the photovoltaic dry vacuum pump lubricating oil of the present comparative example is shown in Table 9.

[0100] Table 9

[0101]

[0102]

[0103] Performance characterization

[0104] 1. The base oil of trimellitate was subjected to performance testing, and the test results are shown in Table 10.

[0105] Table 10

[0106] Item pentaerythritol ester Test method Kinematic viscosity (40°C) / (mm 2 / s) 106.7 GB / T 265 viscosity index 94 GB / T 2541 pour point / ℃ -36 GB / T 3535 flash point (open cup) / ℃ 274 GB / T 3536 saponification value / (mgKOH / g) 252 GB / T 9104 evaporation loss (250℃, 1h) / % 0.9 GB / T 7325

[0107] 2. The photovoltaic dry vacuum pump lubricating oil in the examples and comparative examples was subjected to performance testing, and the test results are shown in Table 11.

[0108] Table 11

[0109]

[0110]

[0111] As can be seen from Table 11, the photovoltaic dry vacuum pump lubricating oil prepared in the examples of the present application has excellent extreme pressure and anti-wear properties, rust resistance and corrosion resistance, especially excellent corrosion resistance.

[0112] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions recorded in the above embodiments can be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A special dry vacuum pump lubricant for photovoltaic applications, characterized in that, According to the percentage content by mass, it includes: Ionic liquids 0.5-4%; Anti-wear agent 0.2-2%; Metal deactivating agent 0.01-0.5%; The balance is base oil; The ionic liquid comprises the following structure: Formula 1 Where n is selected from positive integers from 14 to 16; The mass ratio of the ionic liquid to the anti-wear agent is 1:(0.5-0.7). The anti-wear agent is selected from at least one of triphenyl thiophosphate, dialkyl dithiophosphate, and fatty phosphate amine salts.

2. The photovoltaic-specific dry vacuum pump lubricating oil according to claim 1, characterized in that, According to the percentage content by mass, it includes: 1-3% of ionic liquids; Anti-wear agent 0.5-1%; Metal deactivating agent 0.05-0.2%; The balance is base oil.

3. The photovoltaic-specific dry vacuum pump lubricating oil according to any one of claims 1-2, characterized in that, The metal deactivator is methylbenzotriazole.

4. The photovoltaic-specific dry vacuum pump lubricating oil according to claim 3, characterized in that, The nitrogen content in the methylbenzotriazole is 14%-16% in molar percentage.

5. The photovoltaic-specific dry vacuum pump lubricating oil according to any one of claims 1-2 and 4, characterized in that, The base oil is trimellitate.

6. The photovoltaic-specific dry vacuum pump lubricating oil according to claim 3, characterized in that, The base oil is trimellitate.

7. The photovoltaic-specific dry vacuum pump lubricating oil according to claim 5, characterized in that, The saponification value of the trimellitic acid ester is 250-260 mg KOH / g.

8. The photovoltaic-specific dry vacuum pump lubricating oil according to claim 6, characterized in that, The saponification value of the trimellitic acid ester is 250-260 mg KOH / g.

9. The photovoltaic-specific dry vacuum pump lubricating oil according to claim 5, characterized in that, The Noyak evaporation loss of the trimellitate is ≤1.5%.

10. The photovoltaic-specific dry vacuum pump lubricating oil according to any one of claims 6-8, characterized in that, The Noyak evaporation loss of the trimellitate is ≤1.5%.

11. A photovoltaic-specific dry vacuum pump, characterized in that, The photovoltaic-specific dry vacuum pump lubricant as described in any one of claims 1-10.

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