CN105316078A - Preparing method of surfactant for cutting fluid - Google Patents
Preparing method of surfactant for cutting fluid Download PDFInfo
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- CN105316078A CN105316078A CN201510795765.3A CN201510795765A CN105316078A CN 105316078 A CN105316078 A CN 105316078A CN 201510795765 A CN201510795765 A CN 201510795765A CN 105316078 A CN105316078 A CN 105316078A
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- soybean oil
- cutting fluid
- carried out
- active agent
- alkali refining
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Abstract
The invention discloses a preparing method of a surfactant for cutting liquid. The preparing method includes the specific steps that 1, alkali refining is carried out on soybean oil, and dissociative aliphatic acid is removed; 2, ester exchange is carried out on the soybean oil after alkali refining in the step 1 and methyl alcohol, and soybean oil methyl ester is obtained; 3, aminolysis is carried out on the soybean oil methyl ester obtained after ester exchanging in the step 2 and diethanol amine, and soybean oil alkanolamide is obtained. By means of the mode, according to the preparing method of the surfactant for the cutting liquid, the production rate is greatly increased by changing the conditions such as the charging rate, and the environment can not be polluted.
Description
Technical field
The present invention relates to cutting fluid field, particularly relate to a kind of preparation method of cutting fluid tensio-active agent.
Background technology
Cutting fluid is the important supplementary material of metal cutting process, the object of metal working fluid is used to be exactly reduce cutting force and the friction between cutter and workpiece, take away the heat of generation in cutting zone in time to reduce cutting temperature, reduce tool wear, improve tool life, thus enhance productivity, improve workpiece surface roughness, ensure Workpiece Machining Accuracy, thus reach economic optimum, nonionic surface active agent is needed in cutting fluid preparation process, soybean oil alkylolamide is a kind of good nonionic surface active agent, then the productive rate of existing preparation soybean oil alkylolamide is not high, and during experiment not environmentally, the by product produced causes pollution to environment.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of preparation method of cutting fluid tensio-active agent.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of preparation method of cutting fluid tensio-active agent, and concrete steps comprise:
Step one: carry out alkali refining to soybean oil, removes courteous lipid acid;
Step 2: the soybean oil after step one alkali refining and methyl alcohol are carried out transesterify, obtains soybean oil methyl esters;
Step 3: soybean oil methyl esters after step 2 transesterify and diethanolamine are carried out aminolysis, obtains soybean oil alkylolamide.
In a preferred embodiment of the present invention, the sodium hydroxide solution of 17% in described step one, is selected to carry out alkali refining.
In a preferred embodiment of the present invention, in described step 3, soybean oil methyl esters and the amount of ethylene glycol amine are than being 1:3.
The invention has the beneficial effects as follows: the preparation method of a kind of cutting fluid tensio-active agent of the present invention, tensio-active agent prepared by the method, by changing the conditions such as feed ratio, considerably increases its productivity, and can not produce pollution to environment.
Embodiment
Below preferred embodiment of the present invention is described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
The embodiment of the present invention comprises: a kind of preparation method of cutting fluid tensio-active agent, and concrete steps comprise:
Step one: select the sodium hydroxide solution of 17% to carry out alkali refining to soybean oil, remove courteous lipid acid, before adding sodium hydroxide solution, the temperature of soybean oil is room temperature, should not be too high, prevents fat saponification, causes large loss.
Step 2: the soybean oil after step one alkali refining and methyl alcohol are carried out transesterify, obtain soybean oil methyl esters, the wherein soybean oil after alkali refining and the water content <0.5% in methyl alcohol, containing free acid <0.7%, makes transesterify to carry out smoothly.
Step 3: soybean oil methyl esters and diethanolamine after step 2 transesterify are carried out aminolysis than for 1:3 according to quantity, obtain soybean oil alkylolamide, adopt soybean oil methyl esters that amount ratio is 1:3 and diethanolamine can make productive rate improve, the soybean oil alkylolamide color and luster of preparation is best.
Compared with prior art, the preparation method of a kind of cutting fluid tensio-active agent of the present invention, tensio-active agent prepared by the method, by changing the conditions such as feed ratio, considerably increases its productivity, and can not produce pollution to environment.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize specification sheets of the present invention to do equivalent structure or the conversion of equivalent flow process, or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (3)
1. a preparation method for cutting fluid tensio-active agent, is characterized in that, concrete steps comprise:
Step one: carry out alkali refining to soybean oil, removes courteous lipid acid;
Step 2: the soybean oil after step one alkali refining and methyl alcohol are carried out transesterify, obtains soybean oil methyl esters;
Step 3: soybean oil methyl esters after step 2 transesterify and diethanolamine are carried out aminolysis, obtains soybean oil alkylolamide.
2. the preparation method of a kind of cutting fluid tensio-active agent according to claim 1, is characterized in that: select the sodium hydroxide solution of 17% to carry out alkali refining in described step one.
3. the preparation method of a kind of cutting fluid tensio-active agent according to claim 1, is characterized in that: in described step 3, soybean oil methyl esters and the amount of ethylene glycol amine are than being 1:3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510795765.3A CN105316078A (en) | 2015-11-18 | 2015-11-18 | Preparing method of surfactant for cutting fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510795765.3A CN105316078A (en) | 2015-11-18 | 2015-11-18 | Preparing method of surfactant for cutting fluid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105316078A true CN105316078A (en) | 2016-02-10 |
Family
ID=55244409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510795765.3A Pending CN105316078A (en) | 2015-11-18 | 2015-11-18 | Preparing method of surfactant for cutting fluid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105316078A (en) |
-
2015
- 2015-11-18 CN CN201510795765.3A patent/CN105316078A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 刘戎: "非离子型表面活性剂—大豆油烷醇酰胺的制备", 《吉林师范大学学报（自然科学版）》 * |
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Application publication date: 20160210 |
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| WD01 | Invention patent application deemed withdrawn after publication |