CN109810761B - Degradable trace lubricating oil and preparation method thereof - Google Patents
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- 239000010687 lubricating oil Substances 0.000 title claims abstract description 51
- 238000002360 preparation method Methods 0.000 title claims description 15
- 239000000203 mixture Substances 0.000 claims abstract description 55
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 48
- 229920001661 Chitosan Polymers 0.000 claims abstract description 27
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 24
- 235000014113 dietary fatty acids Nutrition 0.000 claims abstract description 15
- 239000000194 fatty acid Substances 0.000 claims abstract description 15
- 229930195729 fatty acid Natural products 0.000 claims abstract description 15
- 150000004665 fatty acids Chemical class 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims description 30
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 24
- 229910052750 molybdenum Inorganic materials 0.000 claims description 24
- 239000011733 molybdenum Substances 0.000 claims description 24
- 238000003756 stirring Methods 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 238000010438 heat treatment Methods 0.000 claims description 22
- 238000005303 weighing Methods 0.000 claims description 13
- AZWLGPJBVAQRHW-UHFFFAOYSA-N 4-aminobutane-1,3-diol Chemical compound NCC(O)CCO AZWLGPJBVAQRHW-UHFFFAOYSA-N 0.000 claims description 11
- VLAPMBHFAWRUQP-UHFFFAOYSA-L molybdic acid Chemical compound O[Mo](O)(=O)=O VLAPMBHFAWRUQP-UHFFFAOYSA-L 0.000 claims description 11
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 claims description 11
- FATBGEAMYMYZAF-UHFFFAOYSA-N oleicacidamide-heptaglycolether Natural products CCCCCCCCC=CCCCCCCCC(N)=O FATBGEAMYMYZAF-UHFFFAOYSA-N 0.000 claims description 11
- NFIHXTUNNGIYRF-UHFFFAOYSA-N 2-decanoyloxypropyl decanoate Chemical compound CCCCCCCCCC(=O)OCC(C)OC(=O)CCCCCCCCC NFIHXTUNNGIYRF-UHFFFAOYSA-N 0.000 claims description 9
- 229940116422 propylene glycol dicaprate Drugs 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 8
- 235000012424 soybean oil Nutrition 0.000 claims description 8
- 239000003549 soybean oil Substances 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 239000002244 precipitate Substances 0.000 claims description 7
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 claims description 6
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims description 3
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims description 3
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims description 3
- 239000005639 Lauric acid Substances 0.000 claims description 3
- 239000005642 Oleic acid Substances 0.000 claims description 3
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims description 3
- 235000021314 Palmitic acid Nutrition 0.000 claims description 3
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims description 3
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 claims description 3
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims description 3
- 235000021313 oleic acid Nutrition 0.000 claims description 3
- TUNFSRHWOTWDNC-HKGQFRNVSA-N tetradecanoic acid Chemical compound CCCCCCCCCCCCC[14C](O)=O TUNFSRHWOTWDNC-HKGQFRNVSA-N 0.000 claims description 3
- OYHQOLUKZRVURQ-HZJYTTRNSA-N Linoleic acid Chemical compound CCCCC\C=C/C\C=C/CCCCCCCC(O)=O OYHQOLUKZRVURQ-HZJYTTRNSA-N 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 235000020778 linoleic acid Nutrition 0.000 claims description 2
- OYHQOLUKZRVURQ-IXWMQOLASA-N linoleic acid Natural products CCCCC\C=C/C\C=C\CCCCCCCC(O)=O OYHQOLUKZRVURQ-IXWMQOLASA-N 0.000 claims description 2
- 239000000341 volatile oil Substances 0.000 claims 1
- 239000002173 cutting fluid Substances 0.000 abstract description 5
- 230000001050 lubricating effect Effects 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 5
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 4
- 239000000460 chlorine Substances 0.000 abstract description 4
- 229910052801 chlorine Inorganic materials 0.000 abstract description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract description 4
- 239000011593 sulfur Substances 0.000 abstract description 4
- 229910052717 sulfur Inorganic materials 0.000 abstract description 4
- 239000003795 chemical substances by application Substances 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 2
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000011574 phosphorus Substances 0.000 abstract description 2
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 2
- 238000005461 lubrication Methods 0.000 description 7
- 239000003921 oil Substances 0.000 description 4
- 235000019198 oils Nutrition 0.000 description 4
- -1 phosphate ester Chemical class 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002054 inoculum Substances 0.000 description 1
- 239000003879 lubricant additive Substances 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
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- Lubricants (AREA)
Abstract
The invention provides a lubricating oil composition, which is characterized in that: is prepared from chitosan and phosphoric acid, wherein the weight ratio of chitosan to phosphoric acid is 2.5-3.5: 1; the invention also contains fatty acid, wherein the dosage of the fatty acid is 1-1.5 times of the weight of the chitosan. The lubricating oil composition prepared by the invention has good extreme pressure wear resistance, rust resistance and biodegradability, can completely or partially replace the traditional extreme pressure wear-resistant agent containing chlorine, sulfur and phosphorus and be used in degradable trace lubricating oil, and a small amount of degradable trace lubricating oil can meet the lubricating cooling, extreme pressure wear resistance and rust resistance requirements of metal processing; the cutting fluid is matched with a trace lubricating device for use, the use amount of the cutting fluid can be saved by more than 95%, and the effects of energy conservation, emission reduction and environmental protection are obvious.
Description
Technical Field
The invention belongs to the technical field of lubrication, and particularly relates to degradable trace lubricating oil and a preparation method thereof.
Background
The traditional metal cutting processing adopts mineral oil or vegetable oil or cutting fluid to carry out a large amount of flushing lubrication, the using amount of the lubricant is large, resources are wasted, great pollution to processing places and environment is caused, and meanwhile, the health of operators is seriously influenced.
In order to solve these problems, a research on trace lubrication technology has been advanced to some extent recently, the trace lubrication technology solves the problems of large usage amount of the lubricant, serious pollution and the like, and meanwhile, in order to enable the trace used lubricant to have stronger extreme pressure anti-wear property and lubricity, a sulfur-containing additive and a chlorine-containing additive which are not friendly to the environment are excessively used, and the research on the trace lubricant additive which does not contain sulfur and chlorine and has excellent extreme pressure anti-wear property is a significant research subject.
Disclosure of Invention
In view of the above defects, the present invention aims to overcome the defects of the prior art and provide a degradable trace amount of lubricating oil.
In order to achieve the above object, the present invention provides a lubricating oil composition, which is prepared from chitosan and phosphoric acid,
wherein the weight ratio of the chitosan to the phosphoric acid is 2.5-3.5: 1; the optimal weight ratio is 3: 1;
the invention also provides a preparation method of the lubricating oil composition, which comprises the following steps: weighing phosphoric acid, adding water to dilute the phosphoric acid to an effective concentration of 20-30%, adding the phosphoric acid and chitosan into a reaction kettle, stirring and heating to 160-200 ℃, fully reacting for 3-4 hours, and carrying out decompression and water discharge for 3-4 times during and after the reaction to obtain the lubricating oil composition.
The lubricating oil composition prepared by the method is a chitosan phosphate ester and amine salt compound, has good water solubility but poor oil solubility, and can be added with fatty acid to continue reaction to generate the chitosan fatty acid phosphate ester and amine salt compound after the preparation step is finished in order to improve the oil solubility of the lubricating oil composition.
The added fatty acid can be selected from C12-C18 fatty acid, preferably one or more of lauric acid, myristic acid, palmitic acid, linoleic acid and oleic acid.
The amount of the fatty acid is 1-1.5 times of the weight of the chitosan.
The preparation method of the lubricating oil composition containing chitosan, phosphoric acid and fatty acid comprises the following steps: weighing phosphoric acid, adding water to dilute the phosphoric acid to an effective concentration of 20-30%, weighing chitosan, adding the chitosan into a reaction kettle, stirring and heating to 160-200 ℃, fully reacting for 3-4 hours, reducing pressure to discharge water for 3-4 times during and after the reaction, adding the weighed fatty acid, heating to 200-240 ℃, stirring and heating for 6-8 hours, and discharging the water generated by the reaction, thus obtaining the lubricating oil composition.
In addition, the invention also provides degradable trace lubricating oil containing the lubricating oil composition, which is characterized by being prepared from the following components in percentage by weight:
the organic molybdenum is prepared from oleamide, molybdic acid and hydroxyethyl ethanolamine, wherein the weight fraction ratio of the oleamide, the molybdic acid and the hydroxyethyl ethanolamine is 100:20-25: 15-20;
the preparation method of the organic molybdenum comprises the following steps: weighing oleamide, molybdic acid and hydroxyethyl ethanolamine, mixing at 80-100 ℃, stirring for 1-2 hours, then heating to 110-120 ℃, reducing the pressure in the container to be not more than 100mmHg, stirring for 2-3 hours, and filtering precipitates to obtain brown liquid, namely the organic molybdenum.
In addition, the invention provides a preparation method of the degradable trace lubricating oil of the lubricating oil composition, which comprises the following steps: mixing and stirring the lubricating oil composition, propylene glycol dicaprate, epoxidized soybean oil and organic molybdenum at the temperature of 40-60 ℃ until the mixture is transparent.
Action and Effect of the invention
The lubricating oil composition prepared by the invention has good extreme pressure wear resistance, rust resistance and biodegradability, can completely or partially replace the traditional extreme pressure wear-resistant agent containing chlorine, sulfur and phosphorus and be used in degradable trace lubricating oil, and a small amount of degradable trace lubricating oil can meet the lubricating cooling, extreme pressure wear resistance and rust resistance requirements of metal processing; the cutting fluid is matched with a trace lubricating device for use, the use amount of the cutting fluid can be saved by more than 95%, and the effects of energy conservation, emission reduction and environmental protection are obvious.
In the invention, the propylene glycol dicaprate provides good lubricity and good biodegradability, and the low kinematic viscosity can effectively reduce the kinematic viscosity of trace lubricating oil, so that the propylene glycol dicaprate is conveniently used in a trace lubricating device.
The epoxidized soybean oil in the present invention has good lubricity and excellent biodegradability, and the presence of epoxy groups can crosslink the prepared lubricating oil composition, resulting in better extreme pressure antiwear properties.
The organic molybdenum prepared by the method has good lubricity and extreme pressure abrasion resistance, is an excellent Mo-N type extreme pressure abrasion resistance agent, and has good degradability.
In the formula of the invention, after the components are mixed, weak bond acting force among molecules can occur based on respective structural characteristics, and the properties of lubricity, dissolubility, extreme pressure abrasion resistance and the like of each other are improved and excited after the components are mutually dissolved and promoted.
Detailed Description
Example one
Weighing 500g of phosphoric acid with the effective concentration of 20 percent and 250g of chitosan, adding the phosphoric acid and the chitosan into a reaction kettle, stirring and heating the mixture to 160 ℃, fully reacting for 4 hours, draining water for 1 time every 1 hour in the middle of the reaction, draining residual water after the reaction, adding the weighed 250g of lauric acid, heating the mixture to 240 ℃, stirring and heating the mixture for 6 hours, and draining the water generated by the reaction to obtain the lubricating oil composition.
Weighing 300g of the prepared lubricating oil composition, 400g of propylene glycol dicaprate, 200g of epoxidized soybean oil and 100g of organic molybdenum, mixing and stirring at the temperature of 40 ℃ until the mixture is transparent to obtain the degradable trace lubricating oil.
The preparation method of the organic molybdenum comprises the following steps: weighing 100g of oleamide, 20g of molybdic acid and 20g of hydroxyethyl ethanolamine, mixing at 80 ℃, stirring for 2 hours, then heating to 120 ℃, reducing the pressure (keeping the pressure in the container not more than 100mmHg), stirring for 2 hours, and filtering precipitates to obtain brown liquid, namely the organic molybdenum.
Example two
333g of phosphoric acid with the effective concentration of 30 percent is weighed, 350g of chitosan is weighed and added into a reaction kettle together, the mixture is stirred and heated to 200 ℃, the mixture fully reacts for 3 hours, water is drained for 1 time every 1 hour during the reaction, and the residual water is drained after the reaction, so that the lubricating oil composition is obtained.
200g of the prepared lubricating oil composition, 500g of propylene glycol dicaprate, 150g of epoxidized soybean oil and 150g of organic molybdenum are weighed, mixed and stirred at the temperature of 50 ℃ until the mixture is semitransparent, and then the degradable trace lubricating oil is obtained.
The preparation method of the organic molybdenum comprises the following steps: 100g of oleamide, 25g of molybdic acid and 15g of hydroxyethyl ethanolamine are weighed, mixed at 100 ℃ and stirred for 1 hour, then the temperature is increased to 110 ℃, the pressure is reduced (the pressure in the container is kept to be not more than 100mmHg), the mixture is stirred for 3 hours, and the brown liquid obtained after filtering the precipitate is the organic molybdenum.
EXAMPLE III
Weighing 400g of phosphoric acid with the effective concentration of 25 percent and 300g of chitosan, adding the phosphoric acid and the chitosan into a reaction kettle, stirring and heating the mixture to 180 ℃, fully reacting the mixture for 3.5 hours, draining water every 1.5 hours in the middle of the reaction for 1 time, draining residual water after the reaction, adding 450g of weighed myristic acid, heating the mixture to 220 ℃, stirring and heating the mixture for 7 hours, and draining the water generated by the reaction to obtain the lubricating oil composition.
250g of the prepared lubricating oil composition, 450g of propylene glycol dicaprate, 200g of epoxidized soybean oil and 100g of organic molybdenum are weighed, mixed and stirred at the temperature of 50 ℃ until the mixture is transparent, and the degradable trace lubricating oil is obtained.
The preparation method of the organic molybdenum comprises the following steps: 100g of oleamide, 22g of molybdic acid and 18g of hydroxyethyl ethanolamine are weighed, mixed at 90 ℃ and stirred for 1.5 hours, then the temperature is increased to 112 ℃, the pressure is reduced (the pressure in a reaction vessel is kept to be not more than 100mmHg), the mixture is stirred for 3 hours, and the brown liquid obtained after filtering the precipitate is the organic molybdenum.
Example four
Weighing 400g of phosphoric acid with the effective concentration of 25 percent and 300g of chitosan, adding the phosphoric acid and the chitosan into a reaction kettle together, stirring and heating the mixture to 190 ℃, fully reacting the mixture for 3.5 hours, draining water for 1 time every 1 hour in the middle of the reaction, draining residual water after the reaction, adding the weighed 400g of palmitic acid, heating the mixture to 210 ℃, stirring and heating the mixture for 7 hours, and draining the water generated by the reaction to obtain the lubricating oil composition.
280g of the prepared lubricating oil composition, 480g of propylene glycol dicaprate, 190g of epoxidized soybean oil and 50g of organic molybdenum are weighed, mixed and stirred at the temperature of about 50 ℃ until the mixture is transparent, and the degradable trace lubricating oil is obtained.
The preparation method of the organic molybdenum comprises the following steps: 100g of oleamide, 23g of molybdic acid and 17g of hydroxyethyl ethanolamine are weighed, mixed and stirred for 1.5 hours at the temperature of 90 +/-1 ℃, then the temperature is increased to 115 +/-1 ℃, the pressure is reduced (the pressure in a container is kept not more than 100mmHg), the stirring is carried out for 2.5 hours, and the brown liquid obtained after filtering the precipitate is the organic molybdenum.
EXAMPLE five
Weighing 400g of phosphoric acid with the effective concentration of 25 percent and 300g of chitosan, adding the phosphoric acid and the chitosan into a reaction kettle, stirring and heating the mixture to 170 ℃, fully reacting the mixture for 4 hours, draining water for 1 time every 1.5 hours in the middle of the reaction, draining residual water after the reaction, adding 450g of weighed oleic acid, heating the mixture to 230 ℃, stirring and heating the mixture for 6.5 hours, and draining the water generated by the reaction to obtain the lubricating oil composition.
270g of the prepared lubricating oil composition, 460g of propylene glycol dicaprate, 180g of epoxidized soybean oil and 90g of organic molybdenum are weighed, mixed and stirred at the temperature of about 50 ℃ until the mixture is transparent, and the degradable trace lubricating oil is obtained.
The preparation method of the organic molybdenum comprises the following steps: 100g of oleamide, 23g of molybdic acid and 16g of hydroxyethyl ethanolamine are weighed, mixed at 95 ℃ and stirred for 1.5 hours, then the temperature is increased to 115 ℃ and the pressure is reduced (the pressure in the reaction vessel is kept to be not more than 100mmHg), the mixture is stirred for 2.5 hours, and the brown liquid obtained after filtering the precipitate is the organic molybdenum.
The degradable trace lubricating oil prepared in the fifth embodiment is applied to gear hobbing, and the model of a gear hobbing machine is as follows: YK 3132; processing a gear: the diameter is 100mm, and the modulus is 2.0 mm; hobbing cutter: TiN coating, diameter 75mm, length 70 mm. Originally, 46# machine oil is used for circulating lubrication and cooling, and is changed into a KS-2107 minimal quantity lubrication device (3 nozzles, all nozzles are energy-saving nozzles produced by Shanghai Jinmega energy-saving technology limited company) and the degradable minimal quantity lubrication oil prepared by the method, and the results are as follows:
the environment-friendly degradable minimal quantity lubricating oil prepared in the above example 5 is subjected to a biodegradable experiment:
1. the experimental method comprises the following steps: GB/T21856-2008 chemical fast degradation carbon dioxide production test.
2. Experimental materials:
2.1 oil liquid: the degradable minimal quantity of lubricating oil prepared in example 5 above.
2.2 inoculum: taking soil 0-10cm from the earth surface of different places, mixing the soil samples uniformly, removing impurities, soaking and stirring the soil samples by using deionized water, and taking supernatant.
3. The experimental results are as follows:
the 28-day biodegradation rate is calculated as follows: 86.63 percent.
Claims (5)
1. The degradable trace lubricating oil is characterized by being prepared from the following components in percentage by weight:
the lubricating oil composition is prepared from chitosan, phosphoric acid and fatty acid;
wherein the weight ratio of the chitosan to the phosphoric acid is 2.5-3.5: 1;
the dosage of the fatty acid is 1-1.5 times of the weight of the chitosan;
the preparation method of the lubricating oil composition comprises the following steps: weighing phosphoric acid, adding water to dilute the phosphoric acid to an effective concentration of 20-30%, weighing chitosan, adding the chitosan into a reaction kettle, stirring and heating to 160-200 ℃, fully reacting for 3-4 hours, reducing pressure to discharge water for 3-4 times during and after the reaction, adding the weighed fatty acid, heating to 200-240 ℃, stirring and heating for 6-8 hours, and discharging the water generated by the reaction to obtain the lubricating oil composition;
the organic molybdenum is prepared from oleamide, molybdic acid and hydroxyethyl ethanolamine, wherein the weight fraction ratio of the oleamide, the molybdic acid and the hydroxyethyl ethanolamine is 100:20-25: 15-20;
the preparation method of the organic molybdenum comprises the following steps: weighing oleamide, molybdic acid and hydroxyethyl ethanolamine, mixing at 60-80 ℃, stirring for 1-2 hours, then heating to 110-120 ℃, keeping the pressure in the container not more than 100mmHg, stirring for 2-3 hours, and filtering the precipitate to obtain brown liquid, namely the organic molybdenum.
2. The degradable minimal amount of lubricating oil of claim 1, wherein:
the weight ratio of the chitosan to the phosphoric acid is 3: 1.
3. The degradable minimal amount of lubricating oil of claim 1, wherein:
the fatty acid is one or more of C12-C18 fatty acids.
4. The degradable minimal amount of lubricating oil of claim 1, wherein:
the fatty acid is selected from one or more of lauric acid, myristic acid, palmitic acid, linoleic acid and oleic acid.
5. The method for preparing degradable minimal essential oil according to any one of claims 1 to 4, wherein:
mixing and stirring the lubricating oil composition, propylene glycol dicaprate, epoxidized soybean oil and organic molybdenum at the temperature of 40-60 ℃ until the mixture is transparent.
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| CN102015741A (en) * | 2008-03-31 | 2011-04-13 | 雪佛龙奥伦耐有限责任公司 | Preparation of a molybdenum amide additive composition and lubricating oil compositions containing same |
| CN102453589A (en) * | 2010-10-18 | 2012-05-16 | 王严绪 | Sulfur-phosphor-free oil-soluble organic molybdenum additive |
| CN103113490A (en) * | 2011-11-17 | 2013-05-22 | 中国科学院海洋研究所 | Water-soluble chitosan phosphate, and preparation application and thereof |
| CN103242941A (en) * | 2013-04-21 | 2013-08-14 | 启东尤希路化学工业有限公司 | High-quality trace lubricant oil for near-dry cutting |
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| EP3146028B1 (en) * | 2014-05-22 | 2018-07-11 | Basf Se | Lubricant compositions containing beta-glucans |
| CN105199825A (en) * | 2015-09-18 | 2015-12-30 | 安徽舒城云飞工贸有限公司 | Steel ball circulating liquid |
| CN107056955B (en) * | 2017-05-26 | 2020-12-25 | 厦门大学 | Synthesis of pseudo-chitosan-fatty acid salt and development of green surfactant |
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| CN102015741A (en) * | 2008-03-31 | 2011-04-13 | 雪佛龙奥伦耐有限责任公司 | Preparation of a molybdenum amide additive composition and lubricating oil compositions containing same |
| CN102453589A (en) * | 2010-10-18 | 2012-05-16 | 王严绪 | Sulfur-phosphor-free oil-soluble organic molybdenum additive |
| CN103113490A (en) * | 2011-11-17 | 2013-05-22 | 中国科学院海洋研究所 | Water-soluble chitosan phosphate, and preparation application and thereof |
| CN103242941A (en) * | 2013-04-21 | 2013-08-14 | 启东尤希路化学工业有限公司 | High-quality trace lubricant oil for near-dry cutting |
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