CN105647633A - Diester-type semisynthetic cutting fluid with high lubrication and high hard water resistance and preparation method thereof - Google Patents

Abstract

The invention discloses a semi-synthetic cutting fluid with high lubricity and high resistance to hard water, which consists of 30-40% synthetic ester, 3%-5% surfactant, 12%-20% antibacterial Rust agent, 2%-5% solubilizer, 1%-5% corrosion and scale inhibitor, 0.2%-0.5% aluminum corrosion inhibitor, 0.5%-1% defoamer, 2%-5% bactericidal agent and the balance of water. The present invention also provides a preparation method of the above-mentioned semi-synthetic cutting fluid. In the double-synthetic ester, sequentially add surfactant, rust inhibitor, corrosion and scale inhibitor, solubilizer, aluminum corrosion inhibitor, defoamer, bactericide After mixing with water, stir and mix evenly to obtain high-lubricating and high-hard-water-resistant diester semi-synthetic cutting fluid. The high-lubrication and high-hard-water-resistant double-ester semi-synthetic cutting fluid of the present invention also has superior performance in terms of lubricity, hard water resistance, aluminum corrosion inhibition, corrosion resistance, rust prevention, and defoaming properties.

Description

A kind of semi-synthetic cutting fluid with high lubricity and high resistance to hard water diester and its preparation method

technical field

The invention belongs to the field of chemical industry and relates to a cutting fluid, in particular to a high-lubrication and high-hard-water-resistant diester semi-synthetic cutting fluid and a preparation method thereof.

Background technique

Semi-synthetic cutting fluid is the trend and trend of metalworking fluid development today. Its advantages and disadvantages are between emulsion and fully synthetic fluid. It has good cooling, cleaning and rust resistance. The disadvantage is that its lubricity is not as good as Emulsion, hard water resistance is not as good as fully synthetic fluid.

At present, the shortcomings of semi-synthetic cutting fluids used in large-scale machinery, automobiles, bearings and other manufacturing industries at home and abroad are fully exposed. The hard water property is not good, so it cannot be used for the water quality requirements of some areas with high hard water. Seriously restrict the development of semi-synthetic cutting fluid.

Contents of the invention

Aiming at the above-mentioned technical problems in the prior art, the present invention provides a high-lubrication and high-hard-water-resistant diester semi-synthetic cutting fluid and a preparation method thereof. The preparation method thereof solves the technical problem of insufficient lubricity and hard water resistance of the semi-synthetic cutting fluid in the prior art.

The present invention provides a semi-synthetic cutting fluid with high lubrication and high resistance to hard water. The components of each raw material are calculated by weight percentage, and its composition and content are as follows:

Synthetic ester 35%-40%;

Surfactant 3%-5%;

Rust inhibitor 12%-20%;

Solubilizer 2%-5%;

Corrosion and scale inhibitor 1%-5%;

Aluminum corrosion inhibitor 0.2%-0.5%;

Defoamer 0.5%-1%;

Fungicide 2%-5%;

water balance;

Wherein said synthetic ester is a mixture of any two or more of trimethylolpropane fatty acid ester, pentaerythritol fatty acid ester, fatty acid diester, or trimellitate; said surfactant is fatty alcohol Polyoxyethylene ethers, fatty alcohol alkoxylates, succinic acid derivatives, capric acid, or octanoic acid; the rust inhibitor is any one of boric acid, naphthenic acid, monoethanolamine, diethanolamine, or triethanolamine or A mixture of two or more compositions; the solubilizer is glycerol, isomeric stearyl alcohol, or isomeric cetyl alcohol; the corrosion and scale inhibitor is fatty acid amide, fatty acid diethanolamide, or amide hexyl alcohol acid cyclohexylamine salt; the aluminum corrosion inhibitor is phosphoric acid ester, 2-amino-2 methyl-1 propanol, or 3-amino-4-octanol; the described defoamer is polyether or emulsified Silicone oil; the bactericide is copper pyridine sulfate, methylisothiazolinone or hydroxymethylethanolamine.

Further, each raw material component is calculated by weight percentage, and its composition and content are as follows:

Synthetic ester 40%;

Surfactant 3%;

Rust inhibitor 12%;

Solubilizer 2%;

Corrosion and scale inhibitor 1%;

Aluminum corrosion inhibitor 0.2%;

0.5% defoamer;

Fungicide 2%;

water balance;

The synthetic ester is composed of trimethylolpropane oleate and trimellitate; the surfactant is fatty alcohol polyoxyethylene ether, or capric acid; the rust inhibitor is boric acid, or three Ethanolamine; the solubilizer is glycerol; the corrosion and scale inhibitor is fatty acid amide; the aluminum corrosion inhibitor is phosphoric acid ester; the defoamer is polyether; Copper pyridine sulfate.

Further, each raw material component is calculated by weight percentage, and its composition and content are as follows:

Synthetic ester 35%;

Surfactant 5%;

Antirust agent 20%;

Solubilizer 5%;

Corrosion and scale inhibitor 5%;

Aluminum corrosion inhibitor 0.5%;

Defoamer 1%;

Fungicide 5%;

water balance;

The synthetic ester is composed of pentaerythritol fatty acid ester and fatty acid diester; the surfactant is vinyl ether succinic acid derivative, or caprylic acid; the rust inhibitor is naphthenic acid, monoethanolamine, or diethanolamine The solubilizer is isomeric stearyl alcohol; the corrosion and scale inhibitor is fatty acid diethanolamide; the aluminum corrosion inhibitor is 2-amino-2 methyl-1 propanol; The defoamer is emulsified silicone oil; the bactericide is methylisothiazolinone.

Further, each raw material component is calculated by weight percentage, and its composition and content are as follows:

Synthetic ester 37%;

Surfactant 4%;

Antirust agent 16%;

Solubilizer 4%;

Corrosion and scale inhibitor 4%;

Aluminum corrosion inhibitor 0.3%;

Defoamer 0.7%;

Fungicide 4%;

water balance;

The synthetic ester is composed of trimethylolpropane fatty acid ester and fatty acid diester; the surfactant is fatty alcohol alkoxylate or capric acid; the rust inhibitor is naphthenic acid, mono Ethanolamine or triethanolamine; the solubilizer is isomerized cetyl alcohol; the corrosion and scale inhibitor is amide caproic acid cyclohexylamine salt; the aluminum corrosion inhibitor is 3-amino-4-octyl Alcohol; the defoamer is polyether; the bactericide is hydroxymethylethanolamine.

The present invention also provides a method for preparing the above-mentioned high-lubricating and high-hard-water-resistant diester semi-synthetic cutting fluid, by weighing synthetic ester, surfactant, rust inhibitor, solubilizer, corrosion and scale inhibitor, Aluminum corrosion inhibitor, defoamer, bactericide and water, in the synthetic ester, add surfactant, rust inhibitor, solubilizer, corrosion and scale inhibitor, aluminum corrosion inhibitor, defoamer, bactericide and After watering, stir and mix evenly to obtain high-lubricating and high-hard-water-resistant diester semi-synthetic cutting fluid.

The semi-synthetic cutting fluid has good extreme pressure lubricity due to the base oil system of double synthetic ester, so it is suitable for processing requirements of various working conditions. In addition, its combination with antirust agent and corrosion and scale inhibitor can be suitable for processing various materials such as steel, cast iron, aluminum alloy, etc. Its surfactant and solubilizer ensure that the semi-synthetic liquid has excellent hard water resistance and overcomes the The common problem of traditional semi-synthetic fluids is insufficient resistance to hard water. Therefore, the final semi-synthetic cutting fluid with high lubricity and high resistance to hard water has strong versatility.

At the same time, the compounded synthetic ester of the present invention, due to its own high viscosity index and high thermal decomposition temperature, makes it form a strong oil film thickness on the interface between the workpiece and the cutting tool. It not only effectively reduces the tool temperature and cutting resistance, but also ensures the lubrication requirements under harsh conditions, so it is generally applicable to the processing of metal materials of various degrees of difficulty.

The present invention adds surfactant fatty alcohol polyoxyethylene ether, fatty alcohol alkoxylate, succinic acid derivative, capric acid, octanoic acid; , to ensure the emulsified particle state of the semi-synthetic liquid under the condition of high hard water, and to avoid the reaction of too much calcium and magnesium ions in hard water and the formula components, which will lead to soap separation and demulsification.

In addition, a kind of semi-synthetic cutting fluid of a kind of high lubricating high hard water resistance diester type of the present invention, has added antirust agent boric acid, naphthenic acid, alcohol amine and antifoaming agent polyether, fungicide copper pyridine sulfate etc., so in Rust resistance, defoaming, bacteria resistance and other aspects also have superior performance.

Compared with the prior art, the technical progress of the present invention is remarkable. The high-lubrication and high-hard-water-resistant double-ester semi-synthetic cutting fluid of the present invention also has superior performance in terms of lubricity, hard water resistance, aluminum corrosion inhibition, corrosion resistance, rust prevention, and defoaming properties.

detailed description

The present invention is further illustrated below by specific examples, but the present invention is not limited.

Synthetic esters: trimethylolpropane fatty acid esters, pentaerythritol fatty acid esters, fatty acid diesters, and trimellitate are produced by Biostar Trading (Shanghai) Co., Ltd.; surfactants: fatty alcohol polyoxyethylene ether, fatty alcohol alkanes Oxygenates, succinic acid derivatives, capric acid, octanoic acid are produced by Sasosan (China) Chemical Co., Ltd.; rust inhibitors: boric acid, naphthenic acid, monoethanolamine, diethanolamine and triethanolamine are produced by Shanghai Zhenwei Chemical Co., Ltd. Production; solubilizer: glycerol, iso-stearyl alcohol, and iso-cetyl alcohol are produced by Simin Oil Chemical Co., Ltd.; corrosion and scale inhibitors: fatty acid amide, fatty acid diethanolamide, amide caproic acid cyclohexylamine Salt is produced by BASF Chemical Co., Ltd.; aluminum corrosion inhibitor: phosphoric acid ester, 2-amino-2 methyl-1 propanol, 3-amino-4-octanol is produced by Dow Chemical Company; defoamer: polyether and Emulsified silicone oil is produced by Shanghai Hongze Chemical Co., Ltd.; fungicides: copper pyridine sulfate, methylisothiazolinone or hydroxymethylethanolamine are produced by Shanghai Zhenwei Chemical Co., Ltd.

Example 1

A high-lubrication and high-hard-water-resistant double-ester semi-synthetic cutting fluid, wherein each raw material component is calculated by weight percentage, and its composition and content are as follows:

Synthetic ester 40%;

Surfactant 3%;

Rust inhibitor 12%;

Solubilizer 2%;

Corrosion and scale inhibitor 1%;

Aluminum corrosion inhibitor 0.2%;

0.5% defoamer;

Fungicide 2%;

water balance;

The synthetic ester is composed of trimethylolpropane oleate and trimellitate; the surfactant is fatty alcohol polyoxyethylene ether, or capric acid; the rust inhibitor is boric acid, or three Ethanolamine; the solubilizer is glycerol; the corrosion and scale inhibitor is fatty acid amide; the aluminum corrosion inhibitor is phosphoric acid ester; the defoamer is polyether; Copper pyridine sulfate.

The preparation method of the above-mentioned a kind of high lubricating high hard water resistant diester type semi-synthetic cutting fluid is as follows:

Weigh each reaction substance according to the weight percentage, add surfactant, antirust agent, solubilizer, corrosion and scale inhibitor, aluminum corrosion inhibitor, defoamer, bactericide and water in sequence to the double synthetic ester, carry out Stir and mix evenly to obtain a semi-synthetic cutting fluid with high lubricity and high resistance to hard water.

Example 2

A high-lubrication and high-hard-water-resistant double-ester semi-synthetic cutting fluid, wherein each raw material component is calculated by weight percentage, and its composition and content are as follows:

Synthetic ester 35%;

Surfactant 5%;

Antirust agent 20%;

Solubilizer 5%;

Corrosion and scale inhibitor 5%;

Aluminum corrosion inhibitor 0.5%;

Defoamer 1%;

Fungicide 5%;

water balance;

The synthetic ester is composed of pentaerythritol fatty acid ester and fatty acid diester; the surfactant is vinyl ether succinic acid derivative, or caprylic acid; the rust inhibitor is naphthenic acid, monoethanolamine, or diethanolamine The solubilizer is isomeric stearyl alcohol; the corrosion and scale inhibitor is fatty acid diethanolamide; the aluminum corrosion inhibitor is 2-amino-2 methyl-1 propanol; The defoamer is emulsified silicone oil; the bactericide is methylisothiazolinone.

The preparation method of the above-mentioned a kind of high lubricating high hard water resistant diester type semi-synthetic cutting fluid is as follows:

Weigh each reaction substance according to the weight percentage, add surfactant, antirust agent, solubilizer, corrosion and scale inhibitor, aluminum corrosion inhibitor, defoamer, bactericide and water in sequence to the double synthetic ester, carry out Stir and mix evenly to obtain a semi-synthetic cutting fluid with high lubricity and high resistance to hard water.

Example 3

A high-lubrication and high-hard-water-resistant double-ester semi-synthetic cutting fluid, wherein each raw material component is calculated by weight percentage, and its composition and content are as follows:

Synthetic ester 37%;

Surfactant 4%;

Antirust agent 16%;

Solubilizer 4%;

Corrosion and scale inhibitor 4%;

Aluminum corrosion inhibitor 0.3%;

Defoamer 0.7%;

Fungicide 4%;

water balance;

The synthetic ester is composed of trimethylolpropane fatty acid ester and fatty acid diester; the surfactant is fatty alcohol alkoxylate, capric acid; the rust inhibitor is naphthenic acid, monoethanolamine , triethanolamine; the solubilizer is isomerized cetyl alcohol; the corrosion and scale inhibitor is amide caproic acid cyclohexylamine salt; the aluminum corrosion inhibitor is 3-amino-4-octanol; The defoamer is polyether; the bactericide is hydroxymethylethanolamine.

Weigh each reaction substance according to the weight percentage, add surfactant, antirust agent, solubilizer, corrosion and scale inhibitor, aluminum corrosion inhibitor, defoamer, bactericide and water in sequence to the double synthetic ester, carry out Stir and mix evenly to obtain a semi-synthetic cutting fluid with high lubricity and high resistance to hard water.

The above content is only a basic description of the concept of the present invention, and any equivalent transformation made according to the technical solution of the present invention shall belong to the protection scope of the present invention.

Claims (5)

1. the high lubrication semi-synthetic cutting fluid of the high diester-type of resistance to hard water, it is characterised in that: each feed composition counts by weight percentage, and its composition and content are as follows:

Synthetic ester 35%-40%;

Tensio-active agent 3%-5%;

Rust-preventive agent 12%-20%;

Solubilizing agent 2%-5%;

Corrosion inhibiting and descaling agent 1%-5%;

Aluminium inhibiter 0.2%-0.5%;

Defoamer 0.5%-1%;

Sterilant 2%-5%;

Water surplus;

Wherein said synthetic ester is the mixture of any two or more composition in trimethylolpropane fatty acid ester, pentaerythritol fatty ester, fatty acid diester or trimellitate; Described tensio-active agent be fatty alcohol-polyoxyethylene ether, fatty alcohol alkoxy compound, succinic acid derivative, certain herbaceous plants with big flowers acid or sad; Described rust-preventive agent is the mixture of any one or the two or more composition in boric acid, naphthenic acid, monoethanolamine, diethanolamine or trolamine; Described solubilizing agent is glycerol, different structure stearyl alcohol or different structure hexadecanol; Described corrosion inhibiting and descaling agent is fatty acid amide, fatty diglycollic amide or acid amides caproic acid cyclohexylamine salt; Described aluminium inhibiter is phosphoric acid ester, 2-amino-2 methyl isophthalic acid propyl alcohol or 3-amino-4-octanol; Described defoamer is polyethers or silicone emulsion; Described sterilant is pyridine copper sulfate, methylisothiazolinone or methylol thanomin.

2. a kind of high lubrication semi-synthetic cutting fluid of the high diester-type of resistance to hard water as claimed in claim 1, it is characterised in that: each feed composition counts by weight percentage, and its composition and content are as follows:

Synthetic ester 40%;

Tensio-active agent 3%;

Rust-preventive agent 12%;

Solubilizing agent 2%;

Corrosion inhibiting and descaling agent 1%;

Aluminium inhibiter 0.2%;

Defoamer 0.5%;

Sterilant 2%;

Water surplus;

Described synthetic ester is made up of tricarboxymethyl propane oleate and trimellitate; Described tensio-active agent is fatty alcohol-polyoxyethylene ether or certain herbaceous plants with big flowers acid; Described rust-preventive agent is boric acid or trolamine; Described solubilizing agent is glycerol; Described corrosion inhibiting and descaling agent is fatty acid amide; Described aluminium inhibiter is phosphoric acid ester; Described defoamer is polyethers; Described sterilant is pyridine copper sulfate.

3. a kind of high lubrication semi-synthetic cutting fluid of the high diester-type of resistance to hard water as claimed in claim 1, it is characterised in that: each feed composition counts by weight percentage, and its composition and content are as follows:

Synthetic ester 35%;

Tensio-active agent 5%;

Rust-preventive agent 20%;

Solubilizing agent 5%;

Corrosion inhibiting and descaling agent 5%;

Aluminium inhibiter 0.5%;

Defoamer 1%;

Sterilant 5%;

Water surplus;

Described synthetic ester is made up of pentaerythritol fatty ester and fatty acid diester; Described tensio-active agent is Vinyl Ether succinic acid derivative or sad; Described rust-preventive agent is naphthenic acid, monoethanolamine or diethanolamine; Described solubilizing agent is different structure stearyl alcohol; Described corrosion inhibiting and descaling agent is fatty diglycollic amide; Described aluminium inhibiter is 2-amino-2 methyl isophthalic acid propyl alcohol; Described defoamer is silicone emulsion; Described sterilant is methylisothiazolinone.

4. a kind of high lubrication semi-synthetic cutting fluid of the high diester-type of resistance to hard water as claimed in claim 1, it is characterised in that: each feed composition counts by weight percentage, and its composition and content are as follows:

Synthetic ester 37%;

Tensio-active agent 4%;

Rust-preventive agent 16%;

Solubilizing agent 4%;

Corrosion inhibiting and descaling agent 4%;

Aluminium inhibiter 0.3%;

Defoamer 0.7%;

Sterilant 4%;

Water surplus;

Described synthetic ester is made up of trimethylolpropane fatty acid ester and fatty acid diester; Described tensio-active agent is fatty alcohol alkoxy compound or certain herbaceous plants with big flowers acid; Described rust-preventive agent is naphthenic acid, monoethanolamine or trolamine; Described solubilizing agent is different structure hexadecanol; Described corrosion inhibiting and descaling agent is acid amides caproic acid cyclohexylamine salt; Described aluminium inhibiter is 3-amino-4-octanol; Described defoamer is polyethers; Described sterilant is methylol thanomin.

5. the preparation method of the arbitrary described a kind of high lubrication semi-synthetic cutting fluid of the high diester-type of resistance to hard water of claim 1-4, it is characterized in that: take synthetic ester, tensio-active agent, rust-preventive agent, solubilizing agent, corrosion inhibiting and descaling agent, aluminium inhibiter, defoamer, sterilant and water according to mass percent, in synthetic ester, after adding tensio-active agent, rust-preventive agent, solubilizing agent, corrosion inhibiting and descaling agent, aluminium inhibiter, defoamer, sterilant and water successively, it is uniformly mixed, obtains the high lubrication semi-synthetic cutting fluid of the high diester-type of resistance to hard water.