CN114106923A - Emulsified metal cutting fluid and preparation method thereof - Google Patents
Emulsified metal cutting fluid and preparation method thereof Download PDFInfo
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- CN114106923A CN114106923A CN202111370764.6A CN202111370764A CN114106923A CN 114106923 A CN114106923 A CN 114106923A CN 202111370764 A CN202111370764 A CN 202111370764A CN 114106923 A CN114106923 A CN 114106923A
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- metal cutting
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Abstract
The invention relates to an emulsified metal cutting fluid and a preparation method thereof. The emulsified metal cutting fluid comprises the following components in percentage by weight: 35-50% of base oil, 1-2.5% of extreme pressure corrosion inhibitor, 6-10% of alkali storage agent, 0.1-0.5% of bactericide, 0.05-0.2% of defoaming agent, 5-10% of composite antirust agent, 25-35% of emulsifier, 8-8.5% of detergent, 1.5-3% of oiliness agent and the balance of deionized water, wherein the sum of the using amounts of the components is 100%. The base oil is the clarified waste engine oil after primary treatment, so that waste is recycled, and the harm of the waste engine oil to the environment can be reduced. Aiming at the main defects of the existing emulsified cutting fluid in use, the invention adopts a corresponding technical scheme to seek breakthrough, so that the developed product not only has excellent lubricity, rust resistance, cleaning property and cooling property, but also has better stability and is not easy to deteriorate. Meanwhile, the product does not contain substances such as nitrite, phenol and the like, and meets the requirements of modern environmental protection laws and regulations.
Description
Technical Field
The invention belongs to the technical field of metal cutting fluid processing, relates to an emulsified metal cutting fluid and a preparation method thereof, and particularly relates to an emulsified metal cutting fluid taking waste engine oil as base oil and a preparation method thereof.
Background
The important functions of the metal working fluid are to provide lubricating, antirust and cooling effects, the cutting efficiency is improved, the service life of a metal grinding tool is prolonged, along with the continuous development of cutting technology, the traditional oil-based cutting fluid which is easy to smoke and ignite cannot meet the industrial requirements, the water-based emulsified cutting fluid with low price has the characteristics of oil base and water base, the emulsified cutting fluid has the characteristics of poor stability and easy decay, common products can be layered after 3-6 months, and the emulsified cutting fluid smells and goes bad in 1-2 weeks due to the influence of environmental factors such as high temperature, high humidity and the like when in use. Therefore, the research on the novel emulsion cutting fluid with excellent stable comprehensive performance has practical significance.
The traditional metal cutting fluid mostly takes mineral oil as base oil, and the method takes the treated clarified waste engine oil as the base oil, so that the problem of difficulty in treating the waste engine oil is solved, the environment is protected, the resource is recycled, the production cost of the metal cutting fluid can be effectively reduced, and the benefit is increased.
Disclosure of Invention
The invention aims to provide an emulsified metal cutting fluid and a preparation method thereof, which are used for improving the stability of the emulsified metal cutting fluid and reducing the production cost by using waste engine oil as base oil.
The purpose of the invention can be realized by the following technical scheme:
an emulsified metal cutting fluid comprises the following components in percentage by weight:
the used oil generally refers to used oil that is used in engines of automobiles, airplanes, ships, etc. and is discharged because the used oil cannot be used continuously because of contamination of impurities such as moisture and dust in the air or oxidation and decomposition due to high temperature, and causes great environmental pollution if not treated. In fact, the ratio of the deteriorated part of the used oil is not large, the waste oil has great recycling value after being treated properly, and the waste oil can contribute to environmental protection.
As a preferred technical scheme, the emulsified metal cutting fluid comprises the following components in percentage by weight:
further, the base oil is at least one of clarified base oil or industrial white oil obtained after treatment by a high-temperature evaporation method and an adsorption filtration method, and is used as the base oil of the emulsified metal cutting fluid.
Further, the alkali storage agent is triethanolamine or diethanolamine, and the main function is to provide sufficient alkaline conditions for the formula.
Further, the cleaning agent is one or more of sodium dodecyl benzene sulfonate, fatty alcohol-polyoxyethylene ether sodium sulfate and octyl decyl glucoside, and mainly acts to enhance the cleaning performance of the emulsified metal cutting fluid.
Further, the emulsifier is at least one or a plurality of octyl phenol polyoxyethylene ether, span-80 and petroleum sodium sulfonate.
Further, the composite antirust agent is at least one or more of triethanolamine borate, triethanolamine sebacate and sodium benzoate, and is mainly used for enhancing the antirust performance of the emulsified metal cutting fluid.
Further, the extreme pressure corrosion inhibitor is benzotriazole and boric acid, and aims to enhance the copper and aluminum corrosion inhibition performance and the extreme pressure performance of the emulsified metal cutting fluid.
Further, the oiliness agent is at least one of tall oil acid and oleic acid, in order to enhance the oil solubility and lubricating properties of the base oil.
Further, the bactericide is at least one of isothiazolinone and morpholine derivative.
Further, the defoaming agent is at least one of polyether organic silicon or self-made defoaming agent.
Another object of the present invention is to provide a method for preparing the above emulsified metal working fluid, comprising the steps of:
(1) removing water and organic impurities with low boiling point from the waste engine oil through high-temperature evaporation (80-120 ℃), and performing adsorption filtration treatment to obtain clarified engine oil serving as base oil for later use;
(2) stirring base oil, tall oil acid, petroleum sodium sulfonate and span-80 in water bath at 40-60 deg.C for 30-50min, and mixing well to obtain oil phase;
(3) stirring deionized water, alkali storage agent, cleaning agent, composite antirust agent, extreme pressure corrosion inhibitor, bactericide and defoaming agent for 15-30min under the condition of water bath at 40-50 ℃ to prepare a water phase;
(4) and slowly introducing the oil phase into the water phase, and continuously stirring for 30-50min under the water bath condition of 40-50 ℃ until the solution is reddish brown, transparent and clear, so as to obtain the emulsified metal cutting fluid.
The invention discloses a method for using emulsified metal cutting fluid
Before use, the emulsified metal cutting fluid can be diluted to the concentration of 5 percent, and the effect is optimal.
Before use, the diluted emulsified metal cutting fluid can be used as a cleaning agent to thoroughly clean the residual metal residues and the metal processing fluid in the liquid storage tank or the processing position.
The emulsified metal cutting fluid is suitable for processing modes of common grinding machines, machine tools and the like; the emulsified metal cutting fluid and the preparation method thereof have the following advantages compared with the existing metal cutting fluid:
1. the invention provides an emulsified metal cutting fluid and a preparation method thereof, and the product takes treated clarified waste engine oil as base oil, solves the problem that the waste engine oil is difficult to treat, simultaneously realizes resource recovery, protects the ecological environment and saves the production cost;
2. the invention provides an emulsified metal cutting fluid and a preparation method thereof, and the product has very excellent cleaning performance due to the addition of a cleaning agent;
3. the invention provides an emulsified metal cutting fluid and a preparation method thereof, and the product is used as the emulsified metal cutting fluid, so that the stability is greatly improved, and a certain stability can be maintained within 12 months;
4. the invention provides an emulsified metal cutting fluid and a preparation method thereof, common additives containing phosphorus, sulfur and the like are not added into the product, and the product has little harm to operators and environment;
5. the invention provides an emulsified metal cutting fluid and a preparation method thereof, wherein the preparation method is simple and is suitable for daily industrial production.
Detailed Description
The invention is further illustrated by the following examples
An emulsified metal cutting fluid comprises the following components in percentage by weight:
wherein the base oil is at least one of clarified base oil or industrial white oil obtained after treatment by a high-temperature evaporation method and an adsorption filtration method;
wherein the alkali storage agent is at least one of triethanolamine or diethanolamine;
wherein the cleaning agent is one or more of sodium dodecyl benzene sulfonate, fatty alcohol-polyoxyethylene ether sodium sulfate and octyl decyl glucoside;
wherein the emulsifier is at least one or more of octylphenol polyoxyethylene ether, span-80 and petroleum sodium sulfonate;
wherein the composite antirust agent is at least one or a plurality of triethanolamine borate, sebacic acid triethanolamine salt and sodium benzoate;
wherein the extreme pressure corrosion inhibitor is benzotriazole and boric acid;
wherein the oiliness agent is at least one of tall oil acid and oleic acid;
wherein the bactericide is at least one of isothiazolinone and morpholine derivative;
wherein the defoaming agent is at least one of polyether organic silicon or self-made defoaming agent;
the preparation method of the emulsified metal cutting fluid comprises the following steps:
1) heating the waste engine oil to 80-120 ℃ by using an electric heating sleeve, evaporating water or some low-fraction organic impurities, fully mixing the adsorbent with the rest waste engine oil, shaking, standing, filtering after stabilization, and repeating for 3-5 times to obtain base oil;
2) placing the base oil in a water bath at 40-60 deg.C, sequentially adding petroleum sodium sulfonate, oleic acid as oiliness agent, and span-80, and stirring for 30-50min to obtain oil phase;
3) adding deionized water and alkali storage agent under 40-50 deg.C water bath condition, stirring for 5min to obtain good alkaline condition as water phase;
4) adding boric acid and benzotriazole as extreme pressure corrosion inhibitor into the water phase, and stirring for 5 min;
5) adding cleaning agents of sodium dodecyl benzene sulfonate, octyl decyl glucoside and sodium fatty alcohol polyoxyethylene ether sulfate into the water phase, and stirring for 5 min;
6) adding emulsifier octylphenol polyoxyethylene ether into the water phase, and stirring for 10 min;
7) adding one or more of triethanolamine borate, sebacic acid triethanolamine salt and sodium benzoate as composite antirust agents into the water phase, and fully stirring for 10 min;
8) adding bactericide and defoamer into the water phase in sequence, stirring for 5min
9) And uniformly and slowly adding the oil phase into the water phase, continuously stirring for 30-50min, and obtaining the emulsified metal cutting fluid when the solution is clear, reddish brown and transparent.
The following detailed description of embodiments of the invention is intended to be illustrative, and not to be construed as limiting the invention.
Example 1
A preparation method of an emulsified metal cutting fluid comprises the following steps:
putting 40g of base oil in a water bath at 40-60 ℃, sequentially adding 3g of petroleum sodium sulfonate, 2.5g of oleic acid as an oiliness agent and 18.5g of span-80 as an emulsifier, and fully stirring for 30-50min to serve as an oil phase for later use;
adding deionized water and 9g of alkali storage agent under the condition of water bath at 40-50 ℃, and stirring for 5min to prepare a good alkaline condition as a water phase;
adding 1.5g of extreme pressure corrosion inhibitor boric acid and 0.35g of benzotriazole into the water phase, and stirring for 5 min;
adding 2g of sodium dodecyl benzene sulfonate, 2g of octyl decyl glucoside and 4g of sodium fatty alcohol polyoxyethylene ether sulfate into the water phase, and stirring for 5 min;
adding 6g of emulsifier octylphenol polyoxyethylene ether into the water phase, and stirring for 10 min;
adding one or more of triethanolamine borate, sebacic acid triethanolamine salt and sodium benzoate as composite antirust agent 8g into the water phase, and stirring for 10 min;
adding 0.2g bactericide and 0.1g defoaming agent into the above water phase in sequence, stirring thoroughly for 5min
And uniformly and slowly adding the oil phase into the water phase, continuously stirring for 30-50min, and obtaining the emulsified metal cutting fluid when the solution is clear, reddish brown and transparent.
Example 2
A preparation method of an emulsified metal cutting fluid comprises the following steps:
putting 41g of base oil in a water bath at 40-60 ℃, sequentially adding 3g of petroleum sodium sulfonate, 2g of oleic acid as an oiliness agent and 18g of span-80 as an emulsifier, and fully stirring for 30-50min to serve as an oil phase for later use;
adding deionized water and 8.5g of alkali storage agent under the condition of water bath at 40-50 ℃, and stirring for 5min to prepare a good alkaline condition as a water phase;
adding 2g of extreme pressure corrosion inhibitor boric acid and 0.4g of benzotriazole into the water phase, and stirring for 5 min;
adding 2g of sodium dodecyl benzene sulfonate, 2g of octyl decyl glucoside and 4g of sodium fatty alcohol polyoxyethylene ether sulfate into the water phase, and stirring for 5 min;
adding 6g of emulsifier octylphenol polyoxyethylene ether into the water phase, and stirring for 10 min;
adding one or more of triethanolamine borate, sebacic acid triethanolamine salt and sodium benzoate as composite antirust agent 8.5g into the water phase, and stirring for 10 min;
adding 0.2g bactericide and 0.1g defoaming agent into the above water phase in sequence, stirring thoroughly for 5min
And uniformly and slowly adding the oil phase into the water phase, continuously stirring for 30-50min, and obtaining the emulsified metal cutting fluid when the solution is clear, reddish brown and transparent.
Example 3
A preparation method of an emulsified metal cutting fluid comprises the following steps:
putting 42g of base oil in a water bath at 40-60 ℃, sequentially adding 3g of petroleum sodium sulfonate, 1.5g of oleic acid as an oiliness agent and 17g of span-80 as an emulsifier, and fully stirring for 30-50min to serve as an oil phase for later use;
adding deionized water and 8g of alkali storage agent under the condition of water bath at 40-50 ℃, and stirring for 5min to prepare a good alkaline condition as a water phase;
adding 2g of extreme pressure corrosion inhibitor boric acid and 0.4g of benzotriazole into the water phase, and stirring for 5 min;
adding 2g of sodium dodecyl benzene sulfonate, 2g of octyl decyl glucoside and 4g of sodium fatty alcohol polyoxyethylene ether sulfate into the water phase, and stirring for 5 min;
adding 8g of emulsifier octylphenol polyoxyethylene ether into the water phase, and stirring for 10 min;
adding one or more of triethanolamine borate, sebacic acid triethanolamine salt and sodium benzoate as composite antirust agent 9g into the water phase, and stirring for 10 min;
adding 0.2g bactericide and 0.1g defoaming agent into the above water phase in sequence, stirring thoroughly for 5min
And uniformly and slowly adding the oil phase into the water phase, continuously stirring for 30-50min, and obtaining the emulsified metal cutting fluid when the solution is clear, reddish brown and transparent.
Example 4
A preparation method of an emulsified metal cutting fluid comprises the following steps:
putting 43g of base oil in a water bath at 40-60 ℃, sequentially adding 2g of petroleum sodium sulfonate, 1.5g of oleic acid as an oiliness agent and 17g of span-80 as an emulsifier, and fully stirring for 30-50min to serve as an oil phase for later use;
adding deionized water and 8g of alkali storage agent under the condition of water bath at 40-50 ℃, and stirring for 5min to prepare a good alkaline condition as a water phase;
adding 1.8g of extreme pressure corrosion inhibitor boric acid and 0.5g of benzotriazole into the water phase, and stirring for 5 min;
adding 2.5g of sodium dodecyl benzene sulfonate, 1.5g of octyl decyl glucoside and 3g of sodium fatty alcohol polyoxyethylene ether sulfate into the water phase, and stirring for 5 min;
adding 8g of emulsifier octylphenol polyoxyethylene ether into the water phase, and stirring for 10 min;
adding one or more of triethanolamine borate, sebacic acid triethanolamine salt and sodium benzoate as composite antirust agent 8g into the water phase, and stirring for 10 min;
adding 0.2g bactericide and 0.1g defoaming agent into the above water phase in sequence, stirring thoroughly for 5min
And uniformly and slowly adding the oil phase into the water phase, continuously stirring for 30-50min, and obtaining the emulsified metal cutting fluid when the solution is clear, reddish brown and transparent.
The results of the tests on the emulsified cutting fluids obtained from the formulations of examples 1-4 are as follows:
the preparation methods of the emulsified metal cutting fluids according to examples 1 to 4 are simple in preparation process, low in cost, excellent in rust prevention and lubrication properties, excellent in cleaning properties, long-term stability, and suitable for large-scale industrial production.
The foregoing description of the embodiments is provided to enable those skilled in the art to make and use the invention, and although embodiments of the present invention have been shown and described above, it is to be understood that they are exemplary and not intended to limit the invention, and that changes, modifications, substitutions, and alterations may be made hereto by those skilled in the art without departing from the scope of the invention.
Claims (10)
1. The emulsified metal cutting fluid is characterized by comprising the following components in percentage by weight:
2. the emulsified metal cutting fluid as set forth in claim 1, wherein the base oil comprises at least one of a preliminarily treated clarified used oil or an industrial white oil;
wherein the clarified used oil is obtained by using a high-temperature evaporation method, setting the temperature between 80 and 120 ℃, removing low-boiling organic impurities and water, and then using an adsorbent and a precipitation filtration method.
3. The emulsified metal cutting fluid according to claim 1, wherein the alkali storage agent is at least one of triethanolamine or diethanolamine.
4. The emulsified metal cutting fluid as set forth in claim 1, wherein the detergent is at least one of caprylyl glucoside, sodium fatty alcohol-polyoxyethylene ether sulfate, and sodium dodecylbenzenesulfonate.
5. The emulsified metal cutting fluid according to claim 1, wherein the emulsifier is at least one of octylphenol polyoxyethylene ether, span-80, and sodium petroleum sulfonate.
6. The emulsified metal cutting fluid according to claim 1, wherein the complex antirust agent is at least one of triethanolamine borate, triethanolamine sebacate, and sodium benzoate.
7. The emulsified metal cutting fluid according to claim 1, wherein the extreme pressure corrosion inhibitor is at least one of benzotriazole and boric acid.
8. The emulsified metal cutting fluid as defined in claim 1, wherein the oiliness agent is at least one of tall oil acid or vegetable oil acid.
9. The emulsified metal cutting fluid according to claim 1, wherein the bactericide is at least one of isothiazolinone and morpholine derivatives, and the defoamer is at least one of polyether silicone or self-made defoamer.
10. A method for preparing the emulsified metal cutting fluid according to any one of claims 1 to 9, comprising the steps of:
1) mixing the treated waste engine oil with sodium petroleum sulfonate, span-80 and tall oil acid at 40-60 deg.C, and stirring for 30-50min to obtain oil phase;
2) mixing other additives at 40-50 deg.C for 15-30min under stirring to obtain water phase;
slowly adding the oil phase finished product into the water phase, continuously stirring for 30-50min, and obtaining the emulsified metal cutting fluid when the solution is red brown transparent and clear.
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Cited By (1)
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| CN115820327A (en) * | 2022-12-13 | 2023-03-21 | 滁州默尔新材料科技有限公司 | Preparation method of cutting fluid for protecting and passivating cutting surface of metal plate |
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