Environment-friendly emulsion composition and preparation method and application thereof

Abstract

This invention proposes an environmentally friendly emulsion composition, its preparation method, and its application, relating to the field of metalworking technology. The environmentally friendly emulsion composition, by weight percentage, comprises or is prepared from raw materials including the following components: 30-65% vegetable oil; 0-20% mineral oil; 10-30% emulsion system; 5-20% rust-inhibiting system; 2-10% antibacterial system; and water as the balance. The environmentally friendly emulsion composition provided by this invention, by controlling each component and its content within the above-mentioned ranges, can yield cutting fluid products particularly suitable for metalworking fluids. Furthermore, using vegetable oil as the base oil makes it more environmentally friendly, offering advantages such as high degradation rate and resource renewability.

Description

Technical Field

[0001] This invention relates to the field of metal processing technology, and in particular to an environmentally friendly emulsion composition, its preparation method, and its application. Background Technology

[0002] Metalworking fluids are widely used in metalworking processes such as cutting and forming, primarily providing excellent lubrication, cooling, cleaning, and rust prevention. Emulsified oils are a significant type of metalworking fluid, accounting for over 50% of the market. Currently, emulsified oils mainly use mineral oils as base oils, containing various harmful substances such as polycyclic aromatic hydrocarbons (PAHs). They have poor biodegradability and can cause pollution if they enter the environment during use due to leakage, spillage, or human disposal.

[0003] Therefore, there is a need to develop an environmentally friendly emulsion. Summary of the Invention

[0004] Based on the above analysis, the present invention aims to provide an environmentally friendly emulsion composition, its preparation method and application. The emulsion composition is a vegetable oil-based emulsion oil, which has advantages such as high degradation rate and renewable resources.

[0005] The objective of this invention is mainly achieved through the following technical solutions:

[0006] In a first aspect, the present invention provides an environmentally friendly emulsion composition, comprising, by weight percentage, the following components or prepared from raw materials comprising the following components:

[0007]

[0008] In one specific embodiment of the present invention, the vegetable oil has a weight percentage of 40-60%.

[0009] In one specific embodiment of the present invention, the mineral oil has a weight percentage of 10-20%, preferably 15-20%.

[0010] In one specific embodiment of the present invention, the weight percentage of the emulsion system is 11-20%.

[0011] In one specific embodiment of the present invention, the rust prevention system comprises 7-15% by weight.

[0012] In one specific embodiment of the present invention, the antibacterial system has a weight percentage of 2-6%.

[0013] As a specific embodiment of the present invention, the vegetable oil includes at least one of rapeseed oil, castor oil, peanut oil, corn oil, soybean oil, and palm oil.

[0014] As a specific embodiment of the present invention, the mineral oil includes at least one of solvent-extracted base oil, hydrorefined base oil, naphthenic base oil, white oil, and solvent oil.

[0015] In one specific embodiment of the present invention, the kinematic viscosity of the mineral oil and the vegetable oil after mixing at 40°C is less than 30 mmHg. 2 / s, preferably 15-25mm 2 / s.

[0016] In one specific embodiment of the present invention, the mineral oil includes a first mineral oil and a second mineral oil. The first mineral oil and the second mineral oil are different, each independently comprising at least one of solvent-extracted base oil, hydrotreated base oil, naphthenic base oil, white oil, and solvent oil. The mass ratio of the first mineral oil to the second mineral oil is (0.5-1.5):1. Preferably, the kinematic viscosity of the first mineral oil and the second mineral oil after mixing is less than 30 mmHg at 40°C. 2 / s, preferably 15-25mm 2 / s.

[0017] As a specific embodiment of the present invention, the emulsification system includes a first emulsifier, a second emulsifier, and a third emulsifier, wherein the HLB of the first emulsifier is 3.0 to 6.9, the HLB of the second emulsifier is 7.1 to 9.9, and the HLB of the third emulsifier is 10.0 to 15.0; preferably, the mass ratio of the first emulsifier, the second emulsifier, and the third emulsifier is (1-6):(6-9):(2-5), more preferably (1-3):(6-9):(2-5), and even more preferably (1-2):(7-9):(3-5).

[0018] As a specific embodiment of the present invention, the first emulsifier includes at least one of fatty alcohol polyoxyethylene ether and sorbitan monooleate.

[0019] In one specific embodiment of the present invention, the second emulsifier comprises dehydrated sorbitol fatty acid ester.

[0020] As a specific embodiment of the present invention, the third emulsifier includes at least one of alkylphenol polyoxyethylene ether and isomeric alcohol.

[0021] As a specific embodiment of the present invention, the rust prevention system includes at least one of tall oleamide, sodium octadecylbenzenesulfonate, dodecenyl succinic acid, copper naphthenate, and ammonium carboxylate.

[0022] As a specific embodiment of the present invention, the rust prevention system includes a first rust inhibitor and a second rust inhibitor. The first rust inhibitor and the second rust inhibitor are different, and each independently includes at least one of tall oilamide, sodium octadecylbenzenesulfonate, dodecenylsuccinic acid, copper naphthenate and ammonium carboxylate. The mass ratio of the first rust inhibitor and the second rust inhibitor is (0.1-10):1, preferably (0.3-3):1.

[0023] As a specific embodiment of the present invention, the antibacterial system includes at least one of polyhexamethylene biguanide, isothiazolinone, quaternary ammonium salt, p-chloro-m-xylenol, benzalkonium chloride and iodopropynyl n-butylcarbamate.

[0024] As a specific embodiment of the present invention, the antibacterial system includes a first antibacterial agent and a second antibacterial agent. The first antibacterial agent and the second antibacterial agent are different and each independently includes at least one of polyhexamethylene biguanide, isothiazolinone, quaternary ammonium salt, p-chloro-m-xylenol, benzalkonium chloride and iodopropynyl n-butylcarbamate. The mass ratio of the first antibacterial agent to the second antibacterial agent is (0.1-10):1, preferably (0.5-2):1.

[0025] Secondly, the present invention provides a method for preparing the environmentally friendly emulsion composition, comprising the following steps:

[0026] Step 1: Heat and stir the emulsion system;

[0027] Step 2: Add vegetable oil, mineral oil, and rust inhibitor, and stir;

[0028] Step 3: Cool down, add the antibacterial system and water, and stir.

[0029] Thirdly, the present invention provides an application of the environmentally friendly emulsion composition in metalworking fluids.

[0030] Beneficial effects:

[0031] The environmentally friendly emulsion composition provided by this invention, by controlling each component and its content within the above-mentioned range, can obtain a cutting fluid product that is particularly suitable for metalworking fluids. Furthermore, using vegetable oil as the base oil makes it more environmentally friendly and has advantages such as high degradation rate and renewable resources. Detailed Implementation

[0032] The following provides a detailed description of specific embodiments of the present invention. It should be understood that the specific embodiments described herein are for illustrative and explanatory purposes only and are not intended to limit the scope of the invention.

[0033] In a first aspect, the present invention provides an environmentally friendly emulsion composition, which, based on the total weight of the emulsion composition and by weight percentage, comprises the following components or is prepared from raw materials comprising the following components:

[0034]

[0035]

[0036] It should be noted that vegetable oil base oils have advantages such as good lubricity, biodegradability, resource renewability, and non-toxicity, making them a good choice for environmentally friendly metalworking fluids. The environmentally friendly emulsion composition provided by this invention is a vegetable oil-based emulsion oil, which has advantages such as high degradation rate and resource renewability.

[0037] As a specific embodiment of the present invention, the vegetable oil includes at least one of rapeseed oil, castor oil, peanut oil, corn oil, soybean oil, and palm oil.

[0038] As a specific embodiment of the present invention, the mineral oil includes at least one of solvent-extracted base oil, hydrorefined base oil, naphthenic base oil, white oil, and solvent oil.

[0039] As a specific embodiment of the present invention, the kinematic viscosity of the mineral oil and vegetable oil mixed at 40°C is less than 30 mmHg. 2 / s, preferably 15-25mm 2 / s.

[0040] In one specific embodiment of the present invention, the mineral oil includes a first mineral oil and a second mineral oil. The first mineral oil and the second mineral oil are different and are each independently selected from at least one of solvent-extracted base oil, hydrorefined base oil, naphthenic base oil, white oil, and solvent oil. Preferably, the kinematic viscosity of the first mineral oil and the second mineral oil after blending is less than 30 mmHg at 40°C. 2 / s, preferably 15-25mm 2 / s.

[0041] It should be noted that the amounts of the first and second mineral oils can be determined based on viscosity requirements using the Arrhenius equation, which calculates the theoretical viscosity of the blended base oil using an internationally accepted viscosity model. As a specific embodiment of the invention, the mass ratio of the first to the second mineral oil is (0.5-1.5):1, for example, 0.6:1, 0.7:1, 0.8:1, 0.9:1, 1:1, 1.1:1, 1.2:1, 1.3:1, 1.4:1, etc.

[0042] As a specific embodiment of the present invention, the emulsification system includes a first emulsifier, a second emulsifier and a third emulsifier, wherein the HLB of the first emulsifier is in the range of 3.0 to 6.9, the HLB of the second emulsifier is in the range of 7.1 to 9.9 and the HLB of the third emulsifier is in the range of 10.0 to 15.0.

[0043] As a specific embodiment of the present invention, the mass ratio of the first emulsifier, the second emulsifier, and the third emulsifier is (1-6):(6-9):(2-5), preferably (1-3):(6-9):(2-5), and more preferably (1-2):(7-9):(3-5).

[0044] As a specific embodiment of the present invention, the first emulsifier includes at least one of fatty alcohol polyoxyethylene ether and sorbitan monooleate.

[0045] In one specific embodiment of the present invention, the second emulsifier comprises dehydrated sorbitol fatty acid ester.

[0046] As a specific embodiment of the present invention, the third emulsifier includes at least one of alkylphenol polyoxyethylene ether and isomeric alcohol.

[0047] Specifically, the molecular formula of fatty alcohol polyoxyethylene ether is RO(CH2CH2O). n H and R are generally saturated or unsaturated C12-C18 hydrocarbon groups, which can be straight-chain hydrocarbon groups or branched hydrocarbon groups; n is the addition number of ethylene oxide, and n is 6-20.

[0048] Specifically, the molecular formula of alkylphenol polyoxyethylene ether is CH3(CH2). x C6H4(OC2H4) y OH, where x is 7, 8, or 11, and y is 1 to 20.

[0049] Specifically, the carbon number range of the isomer alcohol is 12 to 15.

[0050] As a specific embodiment of the present invention, the rust prevention system includes at least one of tall oleamide, sodium octadecylbenzenesulfonate, dodecenyl succinic acid, copper naphthenate, and ammonium carboxylate.

[0051] As a specific embodiment of the present invention, the rust prevention system includes a first rust inhibitor and a second rust inhibitor. The first rust inhibitor and the second rust inhibitor are different and are each independently selected from at least one of tall oilamide, sodium octadecylbenzenesulfonate, dodecenylsuccinic acid, copper naphthenate, and ammonium carboxylate. The mass ratio of the first rust inhibitor to the second rust inhibitor is (0.1-10):1, for example, 0.2:1, 0.3:1, 0.4:1, 0.5:1, 0.6:1, 0.7:1, 0.8:1, 0.9:1, 1:1, 2:1, 3:1, 4:1, 5:1, 6:1, 7:1, 8:1, 9:1, etc., preferably (0.3-3):1.

[0052] As a specific embodiment of the present invention, the ammonium carboxylate salt is selected from at least one of the C2-C10 ammonium carboxylate salts.

[0053] As a specific embodiment of the present invention, the antibacterial system includes at least one of polyhexamethylene biguanide, isothiazolinone, quaternary ammonium salt, p-chloro-meta-xylenol, benzalkonium chloride, and iodopropynyl butylcarbamate.

[0054] As a specific embodiment of the present invention, the antibacterial system includes a first antibacterial agent and a second antibacterial agent. The first antibacterial agent and the second antibacterial agent are different and are each independently selected from at least one of polyhexamethylene biguanide, isothiazolinone, quaternary ammonium salt, p-chloro-m-xylenol, benzalkonium chloride, and iodopropynyl butylcarbamate. The mass ratio of the first antibacterial agent to the second antibacterial agent is (0.1-10):1, for example, 0.2:1, 0.3:1, 0.4:1, 0.5:1, 0.6:1, 0.7:1, 0.8:1, 0.9:1, 1:1, 2:1, 3:1, 4:1, 5:1, 6:1, 7:1, 8:1, 9:1, etc., preferably (0.5-2):1.

[0055] It should be noted that by controlling the components and their contents within the above-mentioned range, the present invention can obtain a cutting fluid product that is particularly suitable for metalworking fluids. Furthermore, the use of vegetable oil as the base oil makes it more environmentally friendly and has advantages such as high degradation rate and renewable resources.

[0056] Secondly, the present invention provides a method for preparing the above-mentioned environmentally friendly emulsion composition, comprising the following steps:

[0057] Step 1: Heat and stir the emulsion system;

[0058] Step 2: Add vegetable oil, mineral oil, and rust inhibitor, and stir;

[0059] Step 3: Cool down, add the antibacterial system and water, and stir.

[0060] As a specific embodiment of the present invention, the specific steps of the preparation method include:

[0061] Step 1: First, add the emulsion system to the mixing tank, preferably heat it to 40-50℃ and stir until homogeneous.

[0062] Step 2: Add vegetable oil, mineral oil, and rust inhibitor to the mixing vessel, stir for at least 45 minutes until homogeneous, then turn off the heat and continue stirring.

[0063] Step 3: After the temperature drops below 40℃, add the antibacterial system and deionized water and continue stirring for more than 1 hour until it is uniform and transparent, and finally obtain the environmentally friendly emulsion composition product.

[0064] Thirdly, the present invention provides an application of an emulsion composition in metalworking fluids.

[0065] It should be noted that the environmentally friendly emulsion composition provided by this invention can be directly used as a water-based metalworking fluid. It uses vegetable oil as the base oil and has advantages such as good lubricity, biodegradability, resource renewability and non-toxicity. Therefore, it is a better choice for environmentally friendly metalworking fluids.

[0066] The following detailed description of preferred embodiments of the present invention illustrates the principles of the invention and is not intended to limit the scope of the invention.

[0067] Unless otherwise specified in the examples, standard conditions or manufacturer-recommended conditions should be followed. Reagents or instruments whose manufacturers are not specified are all commercially available standard products.

[0068] The kinematic viscosity of the mixture of vegetable oil and mineral oil at 40°C is less than 20 mm. 2 / s.

[0069] Example 1

[0070] (1) Prepare the following components according to the weight proportions, with a total weight of 100g:

[0071] Vegetable oil: rapeseed oil, 50g;

[0072] Mineral oil: Highly hydrotreated base oil (HVI 75), 15g;

[0073] Emulsion system: fatty alcohol polyoxyethylene ether (HLB value 4.5), 1g; sorbitol fatty acid ester (HLB value 7.5), 8g; alkylphenol polyoxyethylene ether (HLB value 12.0), 5g;

[0074] Rust prevention system: tallolacamide, 5g; dodecenyl succinic acid, 2g;

[0075] Antibacterial system: Isothiazolinone, 2g; p-chloro-m-xylenol, 2g;

[0076] Deionized water: Balance.

[0077] (2) Preparation

[0078] According to the components and their quantities in step (1), first add fatty alcohol polyoxyethylene ether, sorbitol fatty acid ester, and alkylphenol polyoxyethylene ether to the mixing tank, heat to 45°C and stir evenly. Then add rapeseed oil, highly hydrotreated base oil HVI 75, tall oil amide and dodecenyl succinic acid to the mixing tank and stir for more than 45 minutes until homogeneous. Then turn off the heating and continue stirring. After the temperature drops below 40°C, add isothiazolinone, p-chloro-m-xylenol and deionized water and continue stirring for more than 1 hour until homogeneous and transparent. Finally, the environmentally friendly emulsion composition product is obtained.

[0079] Example 2

[0080] (1) Prepare the following components according to the weight proportions, with a total weight of 100g:

[0081] Vegetable oil: Soybean oil, 50g;

[0082] Mineral oil: Highly hydrotreated base oil (HVI 150), 7g; No. 5 white oil, 8g;

[0083] Emulsion system: fatty alcohol polyoxyethylene ether (HLB value 4.5), 1g; sorbitol fatty acid ester (HLB value 7.5), 8g; alkylphenol polyoxyethylene ether (HLB value 12.0), 5g;

[0084] Rust prevention system: tallolacamide, 5g; dodecenyl succinic acid, 2g;

[0085] Antibacterial system: Isothiazolinone, 2g; p-chloro-m-xylenol, 2g;

[0086] Deionized water: remainder.

[0087] (2) Preparation: Same as in Example 1.

[0088] Example 3

[0089] (1) Prepare the following components according to the weight proportions, with a total weight of 100g:

[0090] Vegetable oil: Soybean oil, 50g;

[0091] Mineral oil: Highly hydrotreated base oil (HVI 150), 7g; No. 5 white oil, 8g;

[0092] Emulsification system: Sorbitol monooleate (HLB value 4.3), 3g; Sorbitol fatty acid ester (HLB value 8.6), 8g; Isomerized alcohol (HLB value 12.0), 5g;

[0093] Rust prevention system: tallolacamide, 5g; dodecenyl succinic acid, 2g;

[0094] Antibacterial system: Isothiazolinone, 2g; p-chloro-m-xylenol, 2g;

[0095] Deionized water: remainder.

[0096] (2) Preparation: Same as in Example 1.

[0097] Example 4

[0098] (1) Prepare the following components according to the weight proportions, with a total weight of 100g:

[0099] Vegetable oil: Castor oil, 50g;

[0100] Mineral oil: Highly hydrotreated base oil (HVI 150), 7g; No. 5 white oil, 8g;

[0101] Emulsion system: Sorbitol monooleate (HLB value 4.3), 3g; Sorbitol fatty acid ester (HLB value 7.5), 6g; Alkylphenol polyoxyethylene ether (HLB value 14.5), 2g;

[0102] Rust prevention system: tallolacamide, 5g; dodecenyl succinic acid, 2g;

[0103] Antibacterial system: Isothiazolinone, 2g; p-chloro-m-xylenol, 2g;

[0104] Deionized water: Balance.

[0105] (2) Preparation: Same as in Example 1.

[0106] Example 5

[0107] (1) Prepare the following components according to the weight proportions, with a total weight of 100g:

[0108] Vegetable oil: Corn oil, 50g;

[0109] Mineral oil: Highly hydrotreated base oil (HVI 150): 7g; No. 5 white oil, 8g;

[0110] Emulsion system: fatty alcohol polyoxyethylene ether (HLB value 4.5), 1g; sorbitol fatty acid ester (HLB value 7.5), 8g; alkylphenol polyoxyethylene ether (HLB value 12.0), 5g;

[0111] Rust prevention system: Sodium octadecylbenzenesulfonate, 5g; Copper naphthenate, 2g;

[0112] Antibacterial system: Isothiazolinone, 2g; p-chloro-m-xylenol, 2g;

[0113] Deionized water: remainder.

[0114] (2) Preparation: Same as in Example 1.

[0115] Example 6

[0116] This embodiment is basically the same as Embodiment 1, except that the rust prevention system contains only 7g of dodecenylsuccinic acid.

[0117] Example 7

[0118] This embodiment is basically the same as Embodiment 1, except that the antibacterial system contains only 4g of isothiazolinone.

[0119] Example 8

[0120] This embodiment is basically the same as embodiment 1, except that it does not include mineral oil, and the vegetable oil is rapeseed oil, 65g.

[0121] Example 9

[0122] This embodiment is basically the same as Example 1, with the same types and amounts of vegetable oil, mineral oil, emulsification system, and antibacterial system. The difference is that the rust-preventive system consists of: tall oilamide, 5g; dodecenyl succinic acid, 5g.

[0123] Example 10

[0124] This embodiment is basically the same as Example 1, with the same types and amounts of vegetable oil, mineral oil, emulsion system, and rust-preventive system. The difference is that the antibacterial system consists of: isothiazolinone, 4g; and p-chloro-m-xylenol, 2g.

[0125] Comparative Example 1

[0126] This comparative example is basically the same as Example 1, except that the emulsion system contains only 14g of dehydrated sorbitol fatty acid ester (HLB value 7.5).

[0127] The component contents of Examples 1-10 and Comparative Example 1 are shown in Tables 1-2.

[0128] Table 1. Content of each component in Examples 1-5 (by weight)

[0129]

[0130]

[0131] Table 2 shows the content of each component (by weight) in Examples 6-10 and Comparative Example 1.

[0132]

[0133]

[0134] Experimental Example 1

[0135] The environmentally friendly emulsion compositions prepared in Examples 1-10 and Comparative Example 1 were tested, and the test results are shown in Table 3.

[0136] In Table 3, the standard for the appearance test of the concentrate is visual inspection; the test method for the pH value of the emulsion is SH / T 0578; the test method for the stability of the emulsion is SH / T 0579; the test method for the rust prevention of the emulsion is 5.7 of GB / T 6144; the test method for the defoaming performance of the emulsion is 5.4 of GB / T 6144; and the test method for the allowable amount of salt in the emulsion is Q / SH 3031 0268.

[0137] Table 3 Test results of Examples 1-10 (S1-S10) and Comparative Example 1 (D1)

[0138]

[0139]

[0140] As shown in Table 3, the environmentally friendly emulsion compositions prepared in Examples 1 to 10 have good appearance, emulsification properties, rust prevention properties, and defoaming properties, and can be used for the processing of ferrous metals.

[0141] Application Example 1

[0142] The environmentally friendly emulsion composition in Example 1 of this invention was formulated into a metalworking fluid and tested in two metalworking companies in Jiangsu and Zhejiang provinces. Its various properties were able to meet the actual processing requirements well, and it had a high cost performance.

[0143] Application Example 2

[0144] The environmentally friendly emulsion composition in Example 1 of this invention was formulated into a metalworking fluid and tested in two metal processing companies in North China. The product was stable and could meet the actual processing needs well.

[0145] It should be noted that the embodiments described above are only for explaining the present invention and do not constitute any limitation on the present invention. The present invention has been described with reference to typical embodiments, but it should be understood that the words used therein are descriptive and explanatory terms, not limiting terms. Modifications can be made to the present invention within the scope of the claims, and revisions can be made to the present invention without departing from the scope and spirit of the present invention. Although the present invention described herein relates to specific methods, materials, and embodiments, it does not mean that the present invention is limited to the specific examples disclosed herein; on the contrary, the present invention can be extended to all other methods and applications with the same function.

Claims

1. An environmentally friendly emulsion composition, characterized in that, It comprises, by weight percentage, the following components or is prepared from raw materials comprising the following components:

2. The emulsion composition according to claim 1, characterized in that, The vegetable oil contains 40-60% by weight; And / or, the mineral oil is 10-20% by weight, preferably 15-20%; And / or, the emulsion system comprises 11-20% by weight; And / or, the rust prevention system comprises 7-15% by weight; And / or, the antimicrobial system comprises 2-6% by weight.

3. The emulsion composition according to claim 1 or 2, characterized in that, The vegetable oil includes at least one of rapeseed oil, castor oil, peanut oil, corn oil, soybean oil, and palm oil; And / or, the mineral oil includes at least one of solvent-extracted base oil, hydrotreated base oil, naphthenic base oil, white oil, and solvent oil; And / or, the kinematic viscosity of the mineral oil and the vegetable oil after mixing is less than 30 mmHg at 40°C. 2 / s, preferably 15-25mm 2 / s.

4. The emulsion composition according to claim 1 or 2, characterized in that, The mineral oil includes a first mineral oil and a second mineral oil. The first mineral oil and the second mineral oil are different. Each of them independently includes at least one of solvent-extracted base oil, hydrotreated base oil, naphthenic base oil, white oil and solvent oil. The mass ratio of the first mineral oil to the second mineral oil is (0.5-1.5):

1. Preferably, the kinematic viscosity of the first mineral oil and the second mineral oil after mixing is less than 30 mmHg at 40°C. 2 / s, preferably 15-25mm 2 / s.

5. The emulsion composition according to claim 1 or 2, characterized in that, The emulsification system includes a first emulsifier, a second emulsifier, and a third emulsifier, wherein the HLB of the first emulsifier is 3.0 to 6.9, the HLB of the second emulsifier is 7.1 to 9.9, and the HLB of the third emulsifier is 10.0 to 15.

0. Preferably, the mass ratio of the first emulsifier, the second emulsifier, and the third emulsifier is (1-6):(6-9):(2-5), more preferably (1-3):(6-9):(2-5), and even more preferably (1-2):(7-9):(3-5).

6. The emulsion composition according to claim 5, characterized in that, The first emulsifier includes at least one of fatty alcohol polyoxyethylene ether and dehydrated sorbitan monooleate; And / or, the second emulsifier includes dehydrated sorbitol fatty acid esters; And / or, the third emulsifier includes at least one of alkylphenol polyoxyethylene ether and isomeric alcohol.

7. The emulsion composition according to claim 1 or 2, characterized in that, The rust prevention system includes at least one of tall oilamide, sodium octadecylbenzenesulfonate, dodecenyl succinic acid, copper naphthenate, and ammonium carboxylate. Preferably, the rust prevention system includes a first rust inhibitor and a second rust inhibitor. The first rust inhibitor and the second rust inhibitor are different and each independently includes at least one of tall oilamide, sodium octadecylbenzenesulfonate, dodecenylsuccinic acid, copper naphthenate, and ammonium carboxylate. The mass ratio of the first rust inhibitor to the second rust inhibitor is (0.1-10):1, preferably (0.3-3):

1.

8. The emulsion composition according to claim 1 or 2, characterized in that, The antibacterial system includes at least one of polyhexamethylene biguanide, isothiazolinone, quaternary ammonium salt, p-chloro-m-xylenol, benzalkonium chloride, and iodopropynyl butylcarbamate. Preferably, the antibacterial system includes a first antibacterial agent and a second antibacterial agent. The first antibacterial agent and the second antibacterial agent are different and each independently includes at least one of polyhexamethylene biguanide, isothiazolinone, quaternary ammonium salt, p-chloro-m-xylenol, benzalkonium chloride and iodopropynyl n-butylcarbamate. The mass ratio of the first antibacterial agent to the second antibacterial agent is (0.1-10):1, preferably (0.5-2):

1.

9. A method for preparing an environmentally friendly emulsion composition according to any one of claims 1-8, characterized in that, Includes the following steps: Step 1: Heat and stir the emulsion system; Step 2: Add vegetable oil, mineral oil, and rust inhibitor, and stir; Step 3: Cool down, add the antibacterial system and water, and stir.

10. A metalworking fluid comprising the environmentally friendly emulsion composition according to any one of claims 1-8 or the environmentally friendly emulsion composition prepared by the preparation method according to claim 9.

Images