Titanium alloy cutting fluid composition and preparation method thereof

Abstract

The invention discloses a titanium alloy cutting fluid composition and a preparation method thereof. The composition comprises water and an additive, wherein the mass ratio of the water to the additive is 1: (0.05-0.2); the additive comprises the following components in parts by mass: 20-80 parts of base oil, 5-20 parts of modified phosphate, 0.5-5 parts of a zwitterionic polymer, 0.1-2 parts of an antirust agent, 0.1-2 parts of an emulsifier, 0.1-2 parts of a corrosion inhibitor and 0.01-0.5 part of a bactericide. According to the titanium alloy cutting fluid composition, due to the introduced modified phosphate, the cutting fluid has relatively high thermal stability and oxidation resistance and is not easy to hydrolyze, oxidize, precipitate and blister, so that the stability of the titanium alloy cutting fluid is improved, and the service life of the titanium alloy cutting fluid is prolonged; and the introduced zwitterionic polymer can form a protective film on the metal surface, so that the cleaning capability of the cutting fluid and the corrosion inhibition capability of non-ferrous metals are enhanced. The titanium alloy cutting fluid composition prepared by the invention not only has the advantages of simple method, easily available raw materials, environmental friendliness and low cost, but also improves the comprehensive performance of the titanium alloy cutting fluid.

Description

Technical Field

[0001] The invention relates to a titanium alloy cutting fluid composition and a preparation method thereof. Background Art

[0002] Titanium alloys are widely used in aerospace, petrochemical, metallurgy and other fields due to their low density, high specific strength, good high and low temperature resistance, and excellent corrosion resistance. However, titanium alloys are typical difficult-to-process materials. During the cutting process, traditional metal processing media are difficult to meet the processing requirements of titanium alloys. During the processing, titanium alloys are still prone to adhere to the surface of the tool, causing serious adhesion losses.

[0003] Titanium alloy cutting fluid is a key product in the titanium alloy cutting process. It not only plays the role of lubrication, rust prevention, cooling, cleaning, etc., but also ensures the processing quality of parts and components, and prevents the processing surface from being corroded. The main components of general titanium alloy cutting fluid include base oil, extreme pressure agent, anti-wear agent, rust inhibitor, emulsifier, corrosion inhibitor and bactericide. At present, phosphate ester additives are usually used as auxiliary additives of titanium alloy cutting fluid in the prior art. It can provide extreme pressure performance and corrosion inhibition performance for titanium alloy cutting fluid, and can form a protective film on the metal surface under high temperature and high pressure, thereby reducing direct contact and adhesion between metals, and improving the extreme pressure performance of titanium alloy cutting fluid. However, phosphate ester additives also have significant disadvantages, such as easy hydrolysis, easy oxidation, easy bacteria, easy precipitation and foaming, etc., which will also affect the stability and service life of titanium alloy cutting fluid. Summary of the invention

[0004] In order to at least partially solve the above-mentioned technical problems existing in the prior art, an embodiment of the present invention provides a titanium alloy cutting fluid composition and a preparation method thereof, which improves the quality and efficiency of the titanium alloy cutting fluid while ensuring the stability and oxidation resistance of the titanium alloy cutting fluid, so as to extend the service life of the titanium alloy cutting fluid.

[0005] As one aspect of the present invention, a titanium alloy cutting fluid composition is provided, the composition comprising water and an additive, wherein the mass ratio of the water to the additive is 1:(0.05-0.2);

[0006] The additive comprises the following raw materials by weight: 20 to 80 parts of base oil, 5 to 20 parts of modified phosphate ester, 0.5 to 5 parts of zwitterionic polymer, 0.1 to 2 parts of rust inhibitor, 0.1 to 2 parts of emulsifier, 0.1 to 2 parts of corrosion inhibitor and 0.01 to 0.5 parts of fungicide.

[0007] In one or some possible embodiments, the base oil is selected from mineral oil with a viscosity of 8 to 18 cst.

[0008] In one or some possible embodiments, the modified phosphate is as shown in formula (I):

[0009]

[0010] In formula (I), the value range of n is: 4≤n≤10.

[0011] In one or some possible embodiments, the rust inhibitor is dimer acid and / or trimer acid.

[0012] In one or some possible embodiments, the emulsifier is selected from one or more of sorbitan oleate, sorbitan stearate or sodium petroleum sulfonate.

[0013] In one or some possible embodiments, the corrosion inhibitor is benzotriazole and / or a benzotriazole derivative.

[0014] In one or some possible embodiments, the fungicide is selected from one or more of triazines, morpholines or BITs.

[0015] As another aspect of the present invention, it relates to a method for preparing the above-mentioned titanium alloy cutting fluid composition, the method comprising the following steps:

[0016] S1. According to the formula amount, under stirring, the base oil, the modified phosphate ester, the zwitterionic polymer, the rust inhibitor, the emulsifier, the corrosion inhibitor and the fungicide are mixed in sequence to obtain an additive material;

[0017] S2. Under stirring conditions, the additive material prepared in S1 is mixed with water in a certain mass ratio to obtain a titanium alloy cutting fluid composition.

[0018] In one or some possible embodiments, in S1, the modified phosphate ester is obtained by modifying phosphoric acid esterified with polyether with alkylbenzene.

[0019] In one or some possible embodiments, in S1, the preparation of the zwitterionic polymer comprises the following steps:

[0020] Under stirring conditions, a monomer containing -NH2 groups and a monomer containing -COOH groups are mixed in a certain molar ratio to obtain a mixture; and then the mixture is mixed with an initiator in a certain molar ratio to obtain a zwitterionic polymer.

[0021] In one or some possible embodiments, the molar ratio of the monomer containing -NH2 groups to the monomer containing -COOH groups is 1:(1-3); the molar ratio of the mixture to the initiator is 1:(0.01-0.03).

[0022] In one or some possible embodiments, in S2, the initiator is benzoyl peroxide or lauroyl peroxide.

[0023] The beneficial effects of the above technical solution provided by the embodiment of the present application include at least:

[0024] (1) The titanium alloy cutting fluid composition of the present invention improves the comprehensive performance of the titanium alloy cutting fluid as a whole and is suitable for various metal materials and processing methods.

[0025] (2) After the modified phosphate ester is introduced into the titanium alloy cutting fluid composition of the present invention, the titanium alloy cutting fluid can have higher thermal stability and oxidation resistance, is not easy to hydrolyze, oxidize, precipitate and foam, and improves the stability and service life of the titanium alloy cutting fluid.

[0026] (3) After the zwitterionic polymer is introduced into the titanium alloy cutting fluid composition of the present invention, a protective film can be formed on the metal surface, thereby enhancing the cleaning ability of the titanium alloy cutting fluid and the corrosion inhibition ability of non-ferrous metals.

[0027] (4) The preparation method of the titanium alloy cutting fluid composition of the present invention is simple, the raw materials are easily available, the cost is low, and it is environmentally friendly.

[0028] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and claims. DETAILED DESCRIPTION

[0029] The following are exemplary embodiments of the present invention. It should be understood that the technical solution of the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0030] It should be understood that the terms described in the present invention are only for describing special embodiments and are not intended to limit the present invention. In addition, for the numerical range in the present invention, it should be understood that each intermediate value between the upper and lower limits of the scope is also specifically disclosed. Each smaller range between the intermediate value in any stated value or stated range and any other stated value or intermediate value in the described range is also included in the present invention. The upper and lower limits of these smaller ranges can be independently included or excluded in the scope.

[0031] Unless otherwise indicated, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which the invention belongs. Although the present invention describes only preferred methods and materials, any methods and materials similar or equivalent to those described herein may also be used in the implementation or testing of the present invention. All documents mentioned in this specification are incorporated by reference to disclose and describe the methods and / or materials related to the documents. In the event of a conflict with any incorporated document, the content of this specification shall prevail.

[0032] In the description of the present invention, it should be noted that the terms "include", "including", "have", "contain" and the like are open terms, meaning including but not limited to.

[0033] The present invention is further described below in conjunction with specific examples, and the protection scope of the present invention is not limited by the following examples. The sources of materials mainly involved in the examples and preparation examples are all conventional commercial products.

[0034] Preparation Examples 1 to 3 each provide a zwitterionic polymer.

[0035] Preparation Example 1

[0036] The zwitterionic polymer of this preparation example is prepared by the following steps:

[0037] A zwitterionic monomer containing an -NH2 group and a zwitterionic monomer containing a -COOH group are mixed in a molar ratio of 1:1, and stirred evenly at room temperature to obtain a mixture; the mixture is then mixed with an acyl compound in a molar ratio of 1:0.01, and stirred evenly at room temperature to carry out a free radical polymerization reaction to obtain a zwitterionic polymer.

[0038] Preparation Example 2

[0039] The zwitterionic polymer of this preparation example is prepared by the following steps:

[0040] A zwitterionic monomer containing an -NH2 group and a zwitterionic monomer containing a -COOH group are mixed in a molar ratio of 1:2, and stirred evenly at room temperature to obtain a mixture; the mixture is then mixed with an acyl compound in a molar ratio of 1:0.02, and stirred evenly at room temperature to carry out a free radical polymerization reaction to obtain a zwitterionic polymer.

[0041] Preparation Example 3

[0042] The zwitterionic polymer of this preparation example is prepared by the following steps:

[0043] A zwitterionic monomer containing an -NH2 group and a zwitterionic monomer containing a -COOH group are mixed in a molar ratio of 1:3, and stirred evenly at room temperature to obtain a mixture; the mixture is then mixed with an acyl compound in a molar ratio of 1:0.03, and stirred evenly at room temperature to carry out a free radical polymerization reaction to obtain a zwitterionic polymer.

[0044] The following are examples of the present invention, and examples 1 to 3 provide a titanium alloy cutting fluid composition. The titanium alloy cutting fluid compositions of the following examples are all prepared by the following steps:

[0045] S1. According to the formula amount, under stirring, the base oil, the modified phosphate ester, the zwitterionic polymer, the rust inhibitor, the emulsifier, the corrosion inhibitor and the fungicide are mixed in sequence to obtain a mixture;

[0046] S2. Under stirring conditions, the additive mixture prepared in S1 is mixed with water in a mass ratio of 1:0.1 to obtain a titanium alloy cutting fluid composition.

[0047] Example 1

[0048] The additive composition and formula amount of the titanium alloy cutting fluid composition of this embodiment are shown in Table 1:

[0049] Table 1: Composition and content of additives in Example 1

[0050] composition raw material Formula Quantity Base oil Viscosity: 8 80 Modified Phosphate Ester n is 4 5 Zwitterionic polymers Preparation Example 1 2 Rust inhibitor Dimer acid 0.1 Emulsifier SP-80 2 Corrosion Inhibitor T706 2 Fungicides MBM 0.5

[0051] Example 2

[0052] The additive composition and formula amount of the titanium alloy cutting fluid composition of this embodiment are shown in Table 2:

[0053] Table 2: Additive composition and content of Example 2

[0054] composition Raw material / model Formula Quantity Base oil Viscosity: 12 40 Modified Phosphate Ester n is 6 10 Zwitterionic polymers Preparation Example 1 2 Rust inhibitor Trimer Acid 1.2 Emulsifier Sodium petroleum sulfonate 2 Corrosion Inhibitor TTA 2 Fungicides BK 0.5

[0055] Example 3

[0056] The additive composition and formula amount of the titanium alloy cutting fluid composition of this embodiment are shown in Table 3:

[0057] Table 3: Composition and content of additives in Example 3

[0058] composition Raw material / model Formula Quantity Base oil Viscosity: 18 20 Modified Phosphate Ester n is 8 20 Zwitterionic polymers Preparation Example 1 2 Rust inhibitor Dimer acid and trimer acid 2 Emulsifier SP-85 2 Corrosion Inhibitor IR39 2 Fungicides BIT 0.5

[0059] Comparative Example 1

[0060] The difference between this comparative example and Example 1 is that it does not contain modified phosphate ester.

[0061] Comparative Example 2

[0062] The difference between this comparative example and Example 2 is that it does not contain zwitterionic polymer.

[0063] Comparative Example 3

[0064] The difference between this comparative example and Example 3 is that it contains neither modified phosphate ester nor zwitterionic polymer.

[0065] The following performance tests were performed on the above-mentioned Examples 1 to 3 and Comparative Examples 1 to 3, and the test results are recorded in the following Table 4.

[0066] Test-pH determination

[0067] Carry out acid-base determination on the diluted solution according to the relevant method in GB / T 6144 5.1.

[0068] Test 2 Wear measurement

[0069] The test was carried out according to the relevant standards of the Reichert M2 friction test method.

[0070] Test three hard water soap determination and appearance

[0071] Visual inspection.

[0072] Test Four Titanium Alloy Rust Resistance Determination

[0073] The test was carried out according to the relevant method for the determination of aluminum in 5.6 of GB / T 6144.

[0074] Table 4 Performance test results

[0075] 5% cutting fluid diluent pH Wear amount (mg) Hard Water Soap Rust resistance Appearance Example 1 8.6 12.1 No soap Rust-free clarify Example 2 8.7 14.6 No soap Rust-free clarify Example 3 8.8 16.8 No soap Rust-free clarify Comparative Example 1 8.8 25.1 No soap Rust clarify Comparative Example 2 8.6 21.1 No soap Rust clarify Comparative Example 3 8.6 30.2 Soap Analysis Rust turbid

[0076] Through Examples 1 to 3 and Comparative Examples 1 to 3, combined with the performance test results of Table 4, it can be found that the introduction of modified phosphate esters and zwitterionic polymers can effectively improve the lubricity and rust resistance of the titanium alloy cutting fluid composition; in the titanium alloy cutting fluid composition system, the use of modified phosphate esters and zwitterionic polymers at the same time can effectively improve the lubricity and rust and corrosion resistance of the composition, and significantly reduce the wear of the titanium alloy.

[0077] Although the description of the present invention has been quite detailed and has been described in particular with respect to several described embodiments, it is not intended to be limited to any of these details or embodiments or any particular embodiment, so as to effectively cover the intended scope of the present invention. In addition, the present invention is described above with the embodiments foreseeable by the inventors, and its purpose is to provide a useful description, and those non-substantial changes to the present invention that are not currently foreseen may still represent equivalent changes of the present invention.

[0078] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0079] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A titanium alloy cutting fluid composition, characterized in that: The composition comprises water and an additive, wherein the mass ratio of the water to the additive is 1:(0.05-0.2); The additive comprises the following raw materials by weight: 20 to 80 parts of base oil, 5 to 20 parts of modified phosphate ester, 0.5 to 5 parts of zwitterionic polymer, 0.1 to 2 parts of rust inhibitor, 0.1 to 2 parts of emulsifier, 0.1 to 2 parts of corrosion inhibitor and 0.01 to 0.5 parts of fungicide.

2. The titanium alloy cutting fluid composition according to claim 1, characterized in that: The base oil is selected from mineral oil with a viscosity of 8 to 18 cst.

3. The titanium alloy cutting fluid composition according to claim 1, characterized in that: The modified phosphate is shown in formula (I): In formula (I), the value range of n is: 4≤n≤10.

4. The titanium alloy cutting fluid composition according to claim 1, characterized in that: The rust inhibitor is dimer acid and / or trimer acid.

5. The titanium alloy cutting fluid composition according to claim 1, characterized in that: The emulsifier is selected from one or more of sorbitan oleate, sorbitan stearate or sodium petroleum sulfonate.

6. The titanium alloy cutting fluid composition according to claim 1, characterized in that: The corrosion inhibitor is benzotriazole and / or a benzotriazole derivative.

7. The titanium alloy cutting fluid composition according to claim 1, characterized in that: The bactericide is selected from one or more of triazines, morpholines or BITs.

8. A method for preparing the titanium alloy cutting fluid composition according to any one of claims 1 to 7, characterized in that: The method comprises the following steps: S1. According to the formula amount, under stirring, the base oil, the modified phosphate ester, the zwitterionic polymer, the rust inhibitor, the emulsifier, the corrosion inhibitor and the fungicide are mixed in sequence to obtain an additive material; S2. Under stirring conditions, the additive material prepared in S1 is mixed with water in a certain mass ratio to obtain a titanium alloy cutting fluid composition.

9. The method for preparing the titanium alloy cutting fluid composition according to claim 8, characterized in that: In S1, the modified phosphate ester is obtained by modifying phosphoric acid esterified with polyether with alkylbenzene.

10. The method for preparing the titanium alloy cutting fluid composition according to claim 8, characterized in that: In S1, the preparation of the zwitterionic polymer comprises the following steps: Under stirring conditions, a monomer containing -NH2 groups and a monomer containing -COOH groups are mixed in a certain molar ratio to obtain a mixture; and then the mixture is mixed with an initiator in a certain molar ratio to obtain a zwitterionic polymer.

11. The method for preparing the titanium alloy cutting fluid composition according to claim 10, characterized in that: The molar ratio of the monomer containing -NH2 groups to the monomer containing -COOH groups is 1:(1-3); the molar ratio of the mixture to the initiator is 1:(0.01-0.03).

12. The method for preparing the titanium alloy cutting fluid composition according to claim 10, characterized in that: The initiator is benzoyl peroxide or lauroyl peroxide.

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