CN115851345B - Organic bentonite lubricating grease and preparation method thereof - Google Patents
Organic bentonite lubricating grease and preparation method thereof Download PDFInfo
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- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 title claims abstract description 77
- 239000000440 bentonite Substances 0.000 title claims abstract description 75
- 229910000278 bentonite Inorganic materials 0.000 title claims abstract description 75
- 239000004519 grease Substances 0.000 title claims abstract description 55
- 230000001050 lubricating effect Effects 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000002199 base oil Substances 0.000 claims abstract description 58
- 238000003756 stirring Methods 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 23
- 229920000642 polymer Polymers 0.000 claims abstract description 23
- 238000000227 grinding Methods 0.000 claims abstract description 16
- 239000000654 additive Substances 0.000 claims abstract description 15
- 150000001412 amines Chemical class 0.000 claims abstract description 15
- 239000003921 oil Substances 0.000 claims abstract description 15
- 235000019198 oils Nutrition 0.000 claims abstract description 15
- 235000015112 vegetable and seed oil Nutrition 0.000 claims abstract description 13
- 239000008158 vegetable oil Substances 0.000 claims abstract description 13
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 230000000379 polymerizing effect Effects 0.000 claims abstract description 8
- 230000003213 activating effect Effects 0.000 claims abstract description 5
- 239000013538 functional additive Substances 0.000 claims abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical class [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 26
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 claims description 16
- 239000003208 petroleum Substances 0.000 claims description 9
- REYJJPSVUYRZGE-UHFFFAOYSA-N Octadecylamine Chemical compound CCCCCCCCCCCCCCCCCCN REYJJPSVUYRZGE-UHFFFAOYSA-N 0.000 claims description 8
- 230000000996 additive effect Effects 0.000 claims description 8
- 239000003963 antioxidant agent Substances 0.000 claims description 8
- 230000003078 antioxidant effect Effects 0.000 claims description 8
- 229910052788 barium Inorganic materials 0.000 claims description 8
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 8
- -1 acrylic ester Chemical class 0.000 claims description 7
- 230000004913 activation Effects 0.000 claims description 7
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- 230000008569 process Effects 0.000 claims description 6
- 239000000084 colloidal system Substances 0.000 claims description 5
- FJLUATLTXUNBOT-UHFFFAOYSA-N 1-Hexadecylamine Chemical compound CCCCCCCCCCCCCCCCN FJLUATLTXUNBOT-UHFFFAOYSA-N 0.000 claims description 4
- 239000000944 linseed oil Substances 0.000 claims description 4
- 235000021388 linseed oil Nutrition 0.000 claims description 4
- 230000002335 preservative effect Effects 0.000 claims description 4
- 239000003549 soybean oil Substances 0.000 claims description 4
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- 239000002385 cottonseed oil Substances 0.000 claims description 3
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- 238000003860 storage Methods 0.000 abstract description 9
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- 230000007774 longterm Effects 0.000 abstract description 5
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- 150000001733 carboxylic acid esters Chemical class 0.000 abstract 1
- 239000000314 lubricant Substances 0.000 description 12
- 229910021389 graphene Inorganic materials 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000002562 thickening agent Substances 0.000 description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 6
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 6
- 230000004048 modification Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
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- 238000005886 esterification reaction Methods 0.000 description 5
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- 238000005461 lubrication Methods 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 239000003245 coal Substances 0.000 description 4
- 241001233061 earthworms Species 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 4
- 244000005700 microbiome Species 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 230000032050 esterification Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 235000013311 vegetables Nutrition 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- 229960000583 acetic acid Drugs 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000004202 carbamide Substances 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004945 emulsification Methods 0.000 description 2
- 239000012362 glacial acetic acid Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- WJUMWVJBOZKPPU-UHFFFAOYSA-N 2,3-bis(6-methylheptyl)-N-phenylaniline Chemical compound C(CCCCC(C)C)C=1C(=C(C=CC1)NC1=CC=CC=C1)CCCCCC(C)C WJUMWVJBOZKPPU-UHFFFAOYSA-N 0.000 description 1
- JBIJLHTVPXGSAM-UHFFFAOYSA-N 2-naphthylamine Chemical compound C1=CC=CC2=CC(N)=CC=C21 JBIJLHTVPXGSAM-UHFFFAOYSA-N 0.000 description 1
- KZNDXCVEWRZEEU-UHFFFAOYSA-N 4-n-cyclohexyl-4-n-phenylbenzene-1,4-diamine Chemical compound C1=CC(N)=CC=C1N(C=1C=CC=CC=1)C1CCCCC1 KZNDXCVEWRZEEU-UHFFFAOYSA-N 0.000 description 1
- BWDBEAQIHAEVLV-UHFFFAOYSA-N 6-methylheptan-1-ol Chemical compound CC(C)CCCCCO BWDBEAQIHAEVLV-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
- 206010019049 Hair texture abnormal Diseases 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 244000178231 Rosmarinus officinalis Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 239000007866 anti-wear additive Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 150000001638 boron Chemical class 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- DKVNPHBNOWQYFE-UHFFFAOYSA-N carbamodithioic acid Chemical compound NC(S)=S DKVNPHBNOWQYFE-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000004359 castor oil Substances 0.000 description 1
- 235000019438 castor oil Nutrition 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- 210000002249 digestive system Anatomy 0.000 description 1
- 239000012990 dithiocarbamate Substances 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000008172 hydrogenated vegetable oil Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 150000003867 organic ammonium compounds Chemical class 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002530 phenolic antioxidant Substances 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 150000003141 primary amines Chemical class 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 150000003346 selenoethers Chemical class 0.000 description 1
- 210000000582 semen Anatomy 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 238000007655 standard test method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 150000003558 thiocarbamic acid derivatives Chemical class 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/74—Recovery of fats, fatty oils, fatty acids or other fatty substances, e.g. lanolin or waxes
Abstract
The invention provides a preparation method of organic bentonite grease, which comprises the following steps: adding long-chain organic amine into organic bentonite, fully grinding and homogenizing, and activating by microwave for later use; taking polymer obtained by polymerizing vegetable oil and unsaturated carboxylic ester as base oil, adding 5-15% of activated organic bentonite by mass fraction into the polymer base oil under the condition of stirring at normal temperature, and fully stirring and uniformly mixing at normal temperature to obtain organic bentonite mixed oil; and adding the functional additive into the obtained organic bentonite mixed oil, stirring, uniformly mixing, and grinding and homogenizing to obtain the organic bentonite lubricating grease. The method is simple to operate, does not need to add auxiliary dispersing agent, has good sensitivity to additives, and has good high-temperature performance, anti-friction performance and mechanical stability, and long-term storage is not dried.
Description
Technical Field
The invention belongs to the field of lubricating material processing, and particularly relates to organic bentonite lubricating grease taking vegetable oil-methyl methacrylate polymer as base oil and a method thereof.
Background
Lubricating oils and greases are the two most common types of lubricants. The lubricating oil is an oily lubricant composed of base oil and additives, and is suitable for lubrication requiring higher fluidity; the grease is added with a thickening agent to form paste, and the grease comprises base oil, the thickening agent and an additive, and is suitable for lubricating heavy-duty equipment and the like.
The thickener can be dispersed in the base oil to form a structural framework, so that the base oil is adsorbed and fixed in the structural framework, and the semisolid lubricating grease with plasticity is formed. It is solid at normal temperature and in a static state, can keep its own shape without flowing, and can adhere to metal without slipping; it can flow like liquid when it is at high temperature or is exposed to external force exceeding a certain limit.
The organic bentonite grease is a non-soap grease obtained by using organic modified bentonite as a thickening agent to thicken lubricating oil base oil, has good high-temperature performance, simple manufacturing process and low cost, and is widely applied to the lubrication of bearings of heavy-duty equipment such as metallurgy, casting steel rolling equipment, mine heavy equipment, railway diesel locomotives and the like.
The annual output of the Chinese organic bentonite grease is far lower than the world level, and the grease output is reduced in recent years. The reason why the application of the organobentonite grease is limited is mainly the following: 1. the organic bentonite grease has poor sensitivity to additives, certain additives are easily adsorbed to the surface of the organic bentonite to lose effect, and meanwhile, the organic bentonite grease can also generate destructive effect on a hydrogen bond network structure skeleton formed by the bentonite to cause structural damage to be thin, so that the overall performance is poor; 2. poor mechanical stability, excessive cone penetration change after mechanical shearing, and excessive change of consistency resistance of the machine under working conditions; 3. the high temperature performance is affected by the covering agent and the dispersing aid agent, and the long-term storage of the lubricating agent has the phenomenon of hair dryness and is not suitable for life lubrication.
The Chinese patent document CN106085550A discloses a preparation method of high-temperature-resistant organic bentonite mechanical lubricating grease, which comprises the steps of firstly adopting castor oil as a base oil raw material, carrying out product modification by glacial acetic acid and hydrogen peroxide under the catalysis of concentrated sulfuric acid to obtain lubricating grease base oil, then mixing bentonite with urea and coal mine pit sewage, inoculating earthworms, gradually adding low-concentration formaldehyde, carrying out the action of microorganisms in the digestive system of the earthworms and the body of the earthworms, matching with abundant microorganisms in the coal mine pit sewage, carrying out microwave heating treatment on the modified bentonite, and carrying out heating and stirring mixing with the base oil and polar dispersant ethanol to obtain the high-temperature-resistant organic bentonite mechanical lubricating grease. In the using process of the grease, the working temperature of the mechanical gear part reaches more than 280 ℃, the grease can still stably work, no degradation occurs, and the emulsification phenomenon does not occur when the grease is contacted with water.
The document respectively carries out a specific modification treatment mode on the base oil and the bentonite, and solves the problems of high temperature resistance, emulsification prevention and the like. However, the modification modes are very complex, for example, the base oil is modified by glacial acetic acid and hydrogen peroxide under the catalysis of concentrated sulfuric acid, bentonite is required to be mixed with urea and coal mine pit sewage, earthworms are inoculated, low-concentration formaldehyde is gradually added for modification, and substances which are unfavorable to environmental protection such as hydrogen peroxide, concentrated sulfuric acid, formaldehyde and the like are introduced. In addition, the method needs to be matched with abundant microorganisms in a coal mine pit, the stability of batch quality is influenced by microorganism strains, and the method in the literature needs ethanol as a polar dispersant, so that the ethanol remained in the bentonite grease can cause the bentonite grease to dry and crack in the volatilization process, and the storage stability is poor, so that the problems that the bentonite grease is poor in mechanical stability and cannot be stored for a long time and the like can not be fundamentally solved.
Chinese patent document CN107118835A is a water-based bentonite lubricant and a preparation method thereof, and is prepared from the following raw materials in parts by weight: 40-60 parts of bentonite, 5-30 parts of phosphate, 5-30 parts of boron salt, 5-20 parts of solid lubricant, 0.2-1 part of methyl acrylate, 0.1-5 parts of dispersing agent, 0.1-5 parts of thickener and the balance of water. The invention does not use base oil, and solves the problems of difficult cleaning and heavy pollution of the traditional base oil lubricant. The water-based bentonite lubricant prepared by the invention has the advantages of uniform dispersion, high temperature resistance and good lubricating effect, and is easy to clean and pollution-free.
This document recognizes the problems of base oils, but it gives up the base oil completely and uses water base instead, and deviates from the basic principle of oily lubricants completely, and cannot effectively perform lubrication. In addition, a large amount of inorganic salt and water are used as raw materials, and the prepared lubricant cannot play a role in rust prevention and corrosion prevention of the oily lubricant on the surface of metal equipment.
Chinese patent document CN103497812a discloses a biodegradable grease composition, which comprises the following components in percentage: 70-90% of base oil, 5-28% of thickening agent, 0.5-2% of auxiliary dispersing agent and 0.1-1% of antioxidant. The base oil is one or two or more of pentaerythritol ester, trimethylolpropane ester vegetable oil and hydrogenated vegetable oil. The thickener is organic bentonite, and is characterized in that the modifier is organic amine, which can be primary amine, swelling amine, tertiary amine and polyamine of aliphatic, cyclic, aromatic and heterocyclic groups with R carbon chain more than 12. The dispersing aid agent is as follows: organic matter containing hydroxyl group. The antioxidant is as follows: phenolic antioxidants, rosemary or a mixture of both.
The document states that the grease has good high and low temperature performance due to the selection of the base oil and the thickener with good compatibility and proper raw material proportion, and the grease does not drip in the dropping point test process. Lubrication of moving parts over a wide temperature range can be satisfied. The product is furthermore distinguished by biodegradability, which allows rapid decomposition into environmentally friendly substances for environmentally sensitive areas or for devices operating.
However, as is obvious from the foregoing, the document still uses small-molecule alcohols, acetone or ethyl acetate as the auxiliary dispersing agent, and the prepared product can cause the bentonite grease to crack and influence the storage stability and the mechanical stability due to the volatilization of the auxiliary dispersing agent remained in the bentonite grease during the storage or use process, so that the problems of poor mechanical stability, incapability of long-term storage and the like cannot be fundamentally solved.
Disclosure of Invention
In view of the above, the invention aims to provide the organobentonite grease taking the vegetable oil-methyl methacrylate polymer as the base oil and the preparation method thereof, and the method is simple to operate, does not need to add a dispersing aid agent in the process of preparing the organobentonite grease, has good sensitivity to additives, and the obtained product has good high-temperature performance, anti-friction performance and mechanical stability and does not dry after long-term storage.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the invention provides a preparation method of organic bentonite lubricating grease, which is characterized by comprising the following steps of:
adding long-chain organic amine into organic bentonite, fully grinding and homogenizing, and activating by microwaves for later use;
b, taking a polymer obtained by polymerizing vegetable oil and acrylic ester as base oil, adding 5-15% of the activated organic bentonite in the step A into the polymer base oil under the condition of stirring at normal temperature, and fully stirring and uniformly mixing at normal temperature to obtain the organic bentonite mixed oil;
and C, adding a functional additive into the organic bentonite mixed oil obtained in the step B, stirring, mixing uniformly, and grinding and homogenizing to obtain the organic bentonite grease.
Preferably, the long-chain organic amine in the step A is octadecylamine or hexadecylamine, and the addition amount of the long-chain organic amine is 2-5% of the mass of bentonite.
Preferably, the microwave activation in step A is activation in a microwave oven at 500-600W for 4-5min.
Further preferably, the vegetable oil in step B is selected from one or more of cottonseed oil, soybean oil, and linseed oil.
Preferably, the kinematic viscosity of the polymer base oil in step B at 40℃is in the range of 65mm2/s to 249mm2/s.
More preferably, the additive in step C comprises esterified modified graphene, added in an amount of 0.1-0.5% by mass of the polymer base oil.
Preferably, the additive in step C comprises diphenylamine, added in an amount of 0.2-1.0% by mass of the polymer base oil.
Preferably, the additive in step C comprises barium petroleum sulfonate, and the addition amount is 0.5-2.0% of the mass ratio of the base oil.
Most preferably, the preparation method specifically comprises the following steps:
adding 2-5% of octadecylamine into the organic bentonite, fully grinding and homogenizing, and placing into a microwave oven for microwave activation for 4-5min at 500-600W for later use;
b, taking a polymer obtained by polymerizing vegetable oil and methyl methacrylate as base oil, gradually adding 5% -15% by mass of the activated organic bentonite in the step A into the polymer base oil under the condition of stirring at normal temperature, and rapidly stirring for 1h at normal temperature to obtain organic bentonite mixed oil;
c, adding diphenylamine, esterified modified graphene and barium petroleum sulfonate into the organic bentonite mixed oil obtained in the step B, continuously stirring for 30min, and grinding and homogenizing for three times by a colloid mill to obtain the organic bentonite lubricating grease.
The invention also provides an organic bentonite lubricant prepared by the method.
The invention has the beneficial effects that:
firstly, the method improves the sensitivity of the organic bentonite to the base oil by activating the organic bentonite with microwaves, and is beneficial to the dispersion of the organic bentonite in the base oil.
Secondly, the bentonite grease is prepared by taking the vegetable oil-methyl methacrylate polymer as the base oil, the operation is simple, no auxiliary dispersing agent is added in the preparation process, the sensitivity to additives is good, the obtained product has good high-temperature performance, anti-friction performance and mechanical stability, the bentonite grease does not dry after long-term storage, and meanwhile, the organobentonite grease does not contain mineral oil and has high biodegradation rate.
Thirdly, the esterified modified graphene oxide is further added, and the graphene can easily enter the contact surface due to the ultra-large specific surface area and the single-layer structure of the graphene, so that the direct friction of the rough surface can be reduced, and a good lubricating effect is achieved. The inventor further discovers that the esterified oxidized graphene not only maintains the antiwear characteristic of the graphene, but also improves the required functionalities of corrosion resistance, friction resistance, oxidation stability and the like of the graphene, and can be used as an antiwear additive with excellent performance of bentonite grease.
Detailed Description
The following examples of the present invention are merely for better illustration of the present invention, but are not intended to represent the present invention as limited to the examples. Therefore, those skilled in the art will recognize that many modifications and adaptations to the embodiments may be made without departing from the scope of the present invention, which is defined in the appended claims.
The following cone penetration is detected according to GB/T269-1991 grease and petroleum ester cone penetration determination method;
the following drops were measured according to GB/T4929-1985 grease drop Point assay;
the following lubricating grease extreme pressure properties are detected according to SH/T0202 lubricating grease extreme pressure property determination method;
the following copper sheet corrosion test is carried out according to the GB/T7326 lubricating grease copper sheet corrosion test method;
the following storage stability is visual inspection, and the specific method is as follows: and (3) placing the organic bentonite lubricating grease into a 90mm culture dish to be filled, scraping a plane by a scraper, standing, and observing whether oil precipitation and dry cracking occur on the surface of the lubricating grease after 60 days.
The biodegradability described below is measured in accordance with ASTM D5864, standard test method for determining aerobic biodegradability in water of lubricants or components thereof.
The organic bentonite is an inorganic mineral/organic ammonium compound, which is prepared by taking bentonite as a raw material, utilizing the lamellar structure of montmorillonite in the bentonite and the characteristic that the lamellar structure can be swelled and dispersed into colloid-grade clay particles in water or an organic solvent, and inserting an organic covering agent through an ion exchange technology. The invention further uses octadecylamine and other long-chain organic amine to activate and modify the organic bentonite. Quaternary ammonium salt organobentonite manufactured by Zhejiang green iridescent materials limited and octadecylamine and hexadecylamine provided by Shandong Ammi chemical engineering limited were used in the following examples of the present invention, but the present invention is not limited to these organobentonite and the organic amine modifier is not limited to these organic amines.
The invention relates to an esterification modificationThe prior esterification modified graphene oxide can be directly used by the sexual graphene oxide, or the esterification modified graphene oxide is obtained by the self-esterification modification of the graphene oxide according to the prior art method and then is used. Graphene oxide is particularly preferably one prepared according to the Hummers method. In the following examples, isooctanol-esterified modified graphene oxide prepared by the team of the present invention was used, and the preparation method thereof was as follows: placing graphene oxide into isooctanol to form graphene oxide-organic alcohol dispersion liquid with the mass fraction of 1%; adding 10% of H with the content of 30% by mass into graphene oxide-isooctanol dispersion liquid 2 O 2 Ultrasonic stirring for 1-2h at normal temperature; adding 1% of p-toluenesulfonic acid by mass of the dispersion liquid into the system, carrying out reflux esterification reaction for 4 hours at 190 ℃, and filtering off solid impurities while the mixture is hot to obtain the catalyst. However, the present invention is not limited to this esterified modified graphene oxide.
The present invention can be polymerized using any vegetable oil and acrylate to provide the polymeric base oils of the present invention. Since vegetable oils are themselves unsaturated, such polymerization reactions are well known to those skilled in the art. In the following examples of the present invention, refined cottonseed oil, linseed oil or soybean oil supplied by the company of Xinjiang Wannian Fengcha oil was used as vegetable oil, methyl methacrylate produced by shandong zhengji chemical company is used as the acrylic ester, but the present invention is not limited to these vegetable oils and acrylic esters or combinations thereof.
The antioxidant preservative of the invention is a chemical capable of inhibiting oxidation of oil products and protecting the lubricating surface from chemical attack of water or other pollutants, and is of the amine type, the phenol type, the amine phenol type, the borate type, the dialkyl dithiophosphate (zinc salt), the dialkyl dithiocarbamate (zinc or cadmium), the organic selenide and the like. Among the amine antioxidant preservatives most commonly used are diphenylamine and thiocarbamates, and sometimes diisooctyldiphenylamine, beta-naphthylamine, N-di-sec-butyl-p-phenylenediamine, N-cyclohexyl-N-phenyl-p-phenylenediamine, and the like. Various types of antioxidant preservative products are commercially available. The following examples of the present invention use diphenylamine supplied by the company of Huifama chemical Co., ltd, but the present invention is not limited to these antioxidant preservatives or combinations thereof.
The rust inhibitor of the present invention refers to an additive for preventing metal from rusting, particularly an oil-soluble rust inhibitor such as barium petroleum sulfonate. The various rust inhibitor products are all commercial products. Barium petroleum sulfonate, offered by the new lubricating oil additives company in Jinzhou, was used as a rust inhibitor in the following examples of the present invention, but the present invention is not limited to these rust inhibitors or combinations thereof.
Other reagents and devices/apparatus used in the present invention are all common chemical reagents and devices/apparatus, and can be operated by those skilled in the art according to the product instructions as required.
Example 1
Firstly, adding 100g of organic bentonite into hexadecylamine with the mass percentage of 2%, fully grinding and homogenizing, then placing into a microwave oven, and activating for 4 minutes under the condition of 500W for later use; polymer obtained by polymerizing refined oleum gossypii semen and methyl methacrylate (kinematic viscosity at 40deg.C is 65 mm) 2 And/s) taking the organic bentonite as base oil, gradually adding the microwave activated organic bentonite into the base oil according to the mass fraction of 5% under the condition of stirring at normal temperature, rapidly stirring for 1h at normal temperature, adding the diphenylamine with the mass ratio of 0.2% of the base oil, the esterified modified graphene with the mass ratio of 0.1% of the base oil and the barium petroleum sulfonate with the mass ratio of 0.5% of the base oil into the system, continuously stirring for 30min, and grinding and homogenizing for three times by a colloid mill to obtain the modified graphene.
Example 2
Firstly, adding 100g of organic bentonite into octadecylamine with the mass percent of 5%, fully grinding and homogenizing, and then placing into a microwave oven for microwave activation for 5min at 600W for later use; polymers obtained by polymerizing refined linseed oil and methyl methacrylate (kinematic viscosity at 40 ℃ C. Of 249 mm) 2 And/s) as base oil, gradually adding the microwave activated organic bentonite into the base oil according to the proportion of 15% by mass under the condition of stirring at normal temperature, rapidly stirring for 1h at normal temperature, then adding the diphenylamine with the mass ratio of 1% of the base oil, the esterified modified graphene with the mass ratio of 0.5% of the base oil and the barium petroleum sulfonate with the mass ratio of 2% of the base oil into the system, continuously stirring for 30min, and then passing through the glueAnd (3) grinding and homogenizing for three times by a body mill to obtain the product.
Example 3
Firstly, adding 100g of organic bentonite into octadecylamine with the mass percentage of 3.5%, fully grinding and homogenizing, and then placing into a microwave oven for microwave activation for 4min at 550W for later use; polymer obtained by polymerizing refined soybean oil and methyl methacrylate (kinematic viscosity at 40 ℃ C. Of 155 mm) 2 And/s) taking the organic bentonite as the base oil, gradually adding the microwave activated organic bentonite into the base oil according to the proportion of 10% by mass under the condition of stirring at normal temperature, rapidly stirring for 1h at normal temperature, adding the diphenylamine with the mass ratio of 0.75% of the base oil, the esterified modified graphene with the mass ratio of 0.25% of the base oil and the barium petroleum sulfonate with the mass ratio of 1% of the base oil into the system, continuously stirring for 30min, and grinding and homogenizing for three times by a colloid mill to obtain the modified graphene.
Performance detection
The organobentonites obtained in examples 1 to 3 were subjected to performance tests in terms of penetration, dropping point, similar viscosity, abrasion diameter, copper sheet corrosion test, biodegradation rate, etc., and the results are shown in Table 1.
TABLE 1 Performance test results
From the table, the organobentonite grease without base oil of the vegetable oil polymer oil has no dropping point, basically has no change of cone penetration after 60 times of shearing, and has a cone penetration change rate within 12% after 10 ten thousand times of shearing, thus indicating that the organobentonite grease has good colloid stability. The copper sheet of the lubricating grease is qualified in corrosion, oil precipitation and dry cracking are avoided after the copper sheet is stored for 60 days, and the Pd value of the organic bentonite lubricating grease after the esterified modified graphene antiwear agent is added is more than or equal to 3089N, which shows that the copper sheet has a good anti-friction effect. In addition, the biodegradation rate of the organic bentonite grease exceeds 80%, which indicates that the organic bentonite grease prepared by the base oil with high biodegradation rate has high biodegradation rate.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (10)
1. The preparation method of the organobentonite lubricating grease is characterized by comprising the following steps of:
adding long-chain organic amine into organic bentonite, fully grinding and homogenizing, and activating by microwaves for later use;
b, taking a polymer obtained by polymerizing vegetable oil and acrylic ester as base oil, adding 5-15% of the activated organic bentonite in the step A into the polymer base oil under the condition of stirring at normal temperature, and fully stirring and uniformly mixing at normal temperature to obtain the organic bentonite mixed oil;
and C, adding a functional additive into the organic bentonite mixed oil obtained in the step B, stirring, mixing uniformly, and grinding and homogenizing to obtain the organic bentonite grease.
2. The preparation method according to claim 1, wherein the long-chain organic amine in the step A is octadecylamine or hexadecylamine, and the addition amount of the long-chain organic amine is 2-5% of the mass of bentonite.
3. The method according to claim 2, wherein the microwave activation in step a is carried out in a microwave oven at 500-600W for 4-5min.
4. The method according to claim 3, wherein the vegetable oil in the step B is one or more selected from the group consisting of cottonseed oil, soybean oil and linseed oil.
5. The process of claim 4, wherein the kinematic viscosity of the polymer base oil in step B is in the range of 65mm at 40 ℃ 2 /s-249mm 2 /s。
6. The method of claim 5, wherein the additive in step C comprises an extreme pressure antiwear agent in an amount of 0.1 to 0.5% by mass of the polymer base oil.
7. The method of claim 6, wherein the additive in step C comprises an antioxidant preservative in an amount of 0.2 to 1.0% by mass of the polymer base oil.
8. The preparation method according to claim 7, wherein the additive in the step C comprises an anti-rust agent in an amount of 0.5 to 2.0% by mass of the base oil.
9. The method of preparing according to claim 8, comprising the steps of:
adding 2-5% of octadecylamine into the organic bentonite, fully grinding and homogenizing, and placing into a microwave oven for microwave activation for 4-5min at 500-600W for later use;
b, taking a polymer obtained by polymerizing vegetable oil and methyl methacrylate as base oil, gradually adding 5% -15% by mass of the activated organic bentonite in the step A into the polymer base oil under the condition of stirring at normal temperature, and rapidly stirring for 1h at normal temperature to obtain organic bentonite mixed oil;
and C, adding the antioxidant preservative diphenylamine, the extreme pressure antiwear agent esterified modified graphene and the antirust agent barium petroleum sulfonate into the organic bentonite mixed oil obtained in the step B, continuously stirring for 30min, and grinding and homogenizing for three times by a colloid mill to obtain the organic bentonite lubricating grease.
10. An organobentonite grease prepared by the preparation method according to any one of claims 1 to 9.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103468353A (en) * | 2012-06-06 | 2013-12-25 | 东莞太平洋博高润滑油有限公司 | Bentonite grease composition and preparation method thereof |
| CN103497812A (en) * | 2013-08-29 | 2014-01-08 | 中国石油化工股份有限公司 | Biodegradable bentonite lubricating grease composition and preparation method thereof |
| BR102015032917A2 (en) * | 2015-12-30 | 2017-07-04 | Universidade Federal De Santa Catarina | COMPOSITION AND PROCESS FOR PRODUCING LUBRICANT GREASE FROM VEGETABLE OIL |
| CN111040846A (en) * | 2019-12-09 | 2020-04-21 | 安徽中天石化股份有限公司 | Environment-friendly long-life lubricating grease and production process thereof |
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| CN103468353A (en) * | 2012-06-06 | 2013-12-25 | 东莞太平洋博高润滑油有限公司 | Bentonite grease composition and preparation method thereof |
| CN103497812A (en) * | 2013-08-29 | 2014-01-08 | 中国石油化工股份有限公司 | Biodegradable bentonite lubricating grease composition and preparation method thereof |
| BR102015032917A2 (en) * | 2015-12-30 | 2017-07-04 | Universidade Federal De Santa Catarina | COMPOSITION AND PROCESS FOR PRODUCING LUBRICANT GREASE FROM VEGETABLE OIL |
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