Elevator traction machine lubricating oil and preparation method and application thereof

Abstract

The present invention provides an elevator traction machine lubricating oil and a preparation method and application thereof, belonging to the technical field of elevator traction machine lubrication. In the present invention, the elevator traction machine lubricating oil includes a base material and an antifoaming agent, the mass of the antifoaming agent is 0.001-0.02% of the mass of the base material; the base material includes the following components in percentage by mass: 87.7-96.1% of water-soluble polyalkylene glycol, 3.0-10.0% of oil-soluble polyether, 0.3-0.8% of antioxidant, 0.05-0.1% of metal passivator, 0.3-0.8% of extreme pressure antiwear agent, 0.2-0.5% of friction reducer, and 0.05-0.1% of rust inhibitor; the extreme pressure antiwear agent is tri-dodecyl dodecyl quaternary phosphonium salt docusate ionic liquid and dioctyl phosphate dodecylamine salt; the friction reducer is an inactive boric acid ester and an oil-soluble organic molybdenum salt. The elevator traction machine lubricating oil provided by the present invention has excellent comprehensive performance.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator traction machine lubrication, and in particular to an elevator traction machine lubricating oil, a preparation method and application thereof. Background Art

[0002] Elevators are divided into two categories: lifts and escalators. Each type of elevator usually includes eight components: traction system, guide system, car, door system, weight balance system, electric traction system, electrical control system, and safety protection system.

[0003] For toothed traction elevators, the function of the traction system reduction gearbox is to reduce the output speed of the traction machine and increase the output torque. There are many types of traction system reduction gearbox structures, and the commonly used ones are worm gear type, bevel gear type and planetary gear type. The worm gear of the worm gear traction machine is mostly made of wear-resistant bronze, and the worm is made of surface carburized and quenched alloy steel. The sliding between the tooth surfaces of the worm transmission is large, the tooth surface contact time is long, and the friction and wear are prominent.

[0004] Before the 1980s, the overall oil consumption level of the elevator industry was not high, and a large number of ordinary gear oils, machine oils, etc. were used in worm gear traction machines. With the development of elevator technology, the structure of the traction machine gearbox has become increasingly compact, the elevator speed has continued to increase, and the load has become larger and larger. These oils have obviously failed to meet the new lubrication requirements, and some traction machine worm gear pairs have worn, and even glued, held the rod and other accidents have occurred. By the late 1980s, China had successfully developed ordinary worm gear oil and extreme pressure worm gear oil, which to a certain extent met the oil needs of the metallurgical system and alleviated the contradiction of the shortage of lubricating oil for elevator traction machines. Therefore, they were widely used by the elevator industry. However, at that time, the development of this oil product was to meet the lubrication of the worm gear pairs of the large rolling mill pressing system introduced by the metallurgical system, and did not fully consider the actual working conditions of the elevator traction machine and factors such as material and load parameters. Therefore, some problems that are not suitable for elevator traction machines were exposed during use, such as corrosion, low transmission efficiency, and insufficient load-bearing capacity. In order to change this situation, some companies have developed mineral-type elevator oil based on extreme-pressure worm gear oil. These oils have better oiliness, improve transmission efficiency compared to general extreme-pressure worm gear oils, and minimize corrosion to the copper worm wheel. They can greatly extend the life of the traction machine worm gear and their quality has reached the level of similar foreign products. They are currently being widely used in China.

[0005] With the continuous updating of elevator traction machine technology, the elevator traction machine lubricant products in the market are also constantly upgraded. At present, the elevator traction machine oil has completed the transformation from mineral type to synthetic type. According to the type of base oil, synthetic elevator oil includes polyalphaolefin (PAO) type lubricant and polyalkylene glycol (PAG) type lubricant. Among them, polyalkylene glycol type lubricant has a higher viscosity index and better high temperature performance, so it is more commonly used. However, the oxidation stability, rust resistance and friction reduction performance of polyalkylene glycol (PAG) type elevator traction machine oil still need to be improved. Summary of the invention

[0006] The purpose of the present invention is to provide an elevator traction machine lubricating oil and a preparation method and application thereof. The elevator traction machine lubricating oil provided by the present invention has excellent comprehensive performance, and has excellent oxidation stability, rust resistance and friction reduction performance, as well as excellent viscosity-temperature performance and extreme pressure and wear resistance.

[0007] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0008] The present invention provides an elevator traction machine lubricating oil, comprising a base material and an antifoaming agent, wherein the mass of the antifoaming agent is 0.001-0.02% of the mass of the base material;

[0009] The matrix material includes the following components in percentage by mass:

[0010] Water-soluble polyalkylene glycol 87.7-96.1%, oil-soluble polyether 3.0-10.0%, antioxidant 0.3-0.8%, metal passivator 0.05-0.1%, extreme pressure anti-wear agent 0.3-0.8%, friction reducer 0.2-0.5%, rust inhibitor 0.05-0.1%;

[0011] The extreme pressure anti-wear agent is tri-dodecyl dodecyl quaternary phosphonium salt docusate ionic liquid and dioctyl phosphate dodecylamine salt;

[0012] The friction reducer is an inactive boric acid ester and an oil-soluble organic molybdenum salt.

[0013] Preferably, the mass ratio of the tri-dodecyl dodecyl quaternary phosphonium docusate ionic liquid to the dioctyl phosphate dodecylamine salt is 1 to 3:1.

[0014] Preferably, the inactive boric acid ester is a boron amide complex, and the oil-soluble organic molybdenum salt is a dialkyl dithiocarbamate molybdenum.

[0015] Preferably, the mass ratio of the inactive borate ester to molybdenum dialkyldithiocarbamate is 1.0-1.5:1.0.

[0016] Preferably, the water-soluble polyalkylene glycol comprises synthetic oil SDM-03C and synthetic oil SDM-08D; the kinematic viscosity of the water-soluble polyalkylene glycol at 40°C is 40 to 2200 mm 2 / s.

[0017] Preferably, the kinematic viscosity of the oil-soluble polyether at 40°C is 15 to 250 mm 2 / s; the raw materials for preparing the oil-soluble polyether include monomers and initiators, the monomers include butylene oxide and propylene oxide, and the initiator is an alcohol compound.

[0018] Preferably, the antioxidant is alkylphenol and alkylaniline, and the mass ratio of the alkylphenol to the alkylaniline is 1 to 3:1.

[0019] Preferably, the metal passivator is a benzotriazole derivative; the rust inhibitor is heptadecenyl imidazoline alkenyl succinate; and the antifoaming agent is a silicon-type antifoaming agent and a non-silicon-type antifoaming agent.

[0020] The present invention provides a method for preparing the elevator traction machine lubricating oil according to the above technical solution, comprising the following steps:

[0021] The water-soluble polyalkylene glycol, the oil-soluble polyether, the antioxidant, the metal passivator, the extreme pressure anti-wear agent, the friction reducer, the rust inhibitor and the anti-foaming agent are mixed to obtain the elevator traction machine lubricating oil.

[0022] The present invention provides the use of the elevator traction machine lubricating oil described in the above technical solution or the elevator traction machine lubricating oil prepared by the preparation method described in the above technical solution in the lubrication of the elevator traction machine worm gear transmission system.

[0023] The invention provides an elevator traction machine lubricating oil, comprising a base material and an antifoaming agent, wherein the mass of the antifoaming agent is 0.001-0.02% of the mass of the base material; the base material comprises the following components in percentage by mass: 87.7-96.1% of water-soluble polyalkylene glycol, 3.0-10.0% of oil-soluble polyether, 0.3-0.8% of antioxidant, 0.05-0.1% of metal passivator, 0.3-0.8% of extreme pressure antiwear agent, 0.2-0.5% of friction reducer, and 0.05-0.1% of rust inhibitor; the extreme pressure antiwear agent is tri-dodecyl dodecyl quaternary phosphonium salt docusate ionic liquid and dioctyl phosphate dodecylamine salt; the friction reducer is inactive boric acid ester and oil-soluble organic molybdenum salt. The present invention adopts water-soluble polyalkylene glycol and oil-soluble polyether as base oil components, and fully utilizes the excellent viscosity-temperature performance, thermal conductivity and thermal oxidation stability of polyalkylene glycol, while improving the disadvantages of poor compatibility of sealing materials and poor solubility in other additives when polyalkylene glycol is used alone, so that the base oil component maintains good comprehensive performance. The present invention adopts tri-dodecyl dodecyl quaternary phosphonium salt docusate ionic liquid and dioctyl phosphate dodecylamine salt as extreme pressure anti-wear agents, reducing the use of active sulfur is beneficial to protecting the copper parts of the elevator traction machine, and solving the contradiction between the extreme pressure and corrosion resistance of the lubricating oil. The present invention adopts inactive boric acid ester and oil-soluble organic molybdenum as friction reducers, which can reduce the friction coefficient and traction coefficient of the lubricating oil and thus improve the transmission efficiency. The present invention introduces antioxidants, metal passivators, extreme pressure anti-wear agents, friction reducers, rust inhibitors and anti-foaming agents. There are extremely complex interactions between different additives. By controlling the appropriate amount of each additive, the lubricating oil has excellent viscosity-temperature performance and excellent thermal oxidation stability, can prevent the formation of sludge, and also has excellent anti-wear protection performance, low friction coefficient and traction coefficient, excellent anti-corrosion and anti-rust performance, and has the characteristics of high thermal conductivity and low pour point. The elevator traction machine lubricating oil provided by the present invention can be used for the lubrication of the elevator traction machine worm gear transmission system, the raw material compatibility is reasonable, the preparation method is simple, and the application range is wide. DETAILED DESCRIPTION

[0024] The present invention provides an elevator traction machine lubricating oil, comprising a base material and an antifoaming agent, wherein the mass of the antifoaming agent is 0.001-0.02% of the mass of the base material;

[0025] The matrix material includes the following components in percentage by mass:

[0026] Water-soluble polyalkylene glycol 87.7-96.1%, oil-soluble polyether 3.0-10.0%, antioxidant 0.3-0.8%, metal passivator 0.05-0.1%, extreme pressure anti-wear agent 0.3-0.8%, friction reducer 0.2-0.5%, rust inhibitor 0.05-0.1%;

[0027] The extreme pressure anti-wear agent is tri-dodecyl dodecyl quaternary phosphonium salt docusate ionic liquid and dioctyl phosphate dodecylamine salt;

[0028] The friction reducer is an inactive boric acid ester and an oil-soluble organic molybdenum salt.

[0029] In the present invention, unless otherwise specified, the raw materials used are commercially available products well known to those skilled in the art or can be prepared by methods well known to those skilled in the art.

[0030] The elevator traction machine lubricating oil provided by the present invention comprises a base material and an antifoaming agent. The base material in the elevator traction machine lubricating oil of the present invention comprises 87.7 to 96.1% of water-soluble polyalkylene glycol (PAG), preferably 90.0 to 95.0%, and more preferably 92.0 to 93.0%. In the present invention, the kinematic viscosity of the water-soluble polyalkylene glycol at 40°C is preferably 40 to 2200 mm 2 / s, more preferably 50 to 1500 mm 2 / s, more preferably 90 to 1150 mm 2 / s, and further preferably 99.08 to 1042 mm 2 / s. In the present invention, the raw materials for preparing the water-soluble polyalkylene glycol preferably include ethylene oxide and propylene oxide, and the molar ratio of ethylene oxide to propylene oxide is preferably 50-70:30-50. In the present invention, the water-soluble polyalkylene glycol preferably includes synthetic oil SDM-03C and synthetic oil SDM-08D, and the mass ratio of synthetic oil SDM-03C to synthetic oil SDM-08D is preferably 1:1.2-7.6, more preferably 1:2.0-5.0, and further preferably 1:2.9-3.3. In an embodiment of the present invention, the synthetic oil SDM-03C and the synthetic oil SDM-08D are purchased from Nanjing Will Chemical Co., Ltd.

[0031] In terms of mass percentage, the base material in the elevator traction machine lubricating oil of the present invention includes 3.0-10.0% of oil-soluble polyether (OSP), preferably 4.0-8.0%, and more preferably 5.0-6.0%. In the present invention, the kinematic viscosity of the oil-soluble polyether at 40°C is preferably 15-250 mm 2 / s, more preferably 20 to 50 mm 2 / s, more preferably 29 to 35 mm 2 / s. In the present invention, the raw materials for preparing the oil-soluble polyether preferably include monomers and initiators; the monomers preferably include butylene oxide and propylene oxide, and the molar ratio of butylene oxide to propylene oxide is preferably 40-60:40-60; the initiator is preferably an alcohol compound, more preferably n-butanol. In the present invention, the oil-soluble polyether is preferably synthetic oil OSP32. In an embodiment of the present invention, the synthetic oil OSP32 was purchased from Nanjing Gutian Chemical Co., Ltd., and the kinematic viscosity at 40°C is 31.35 mm 2 / s.

[0032] The present invention adopts water-soluble polyalkylene glycol and oil-soluble polyether as base oil components, both of which are synthetic oils. While fully utilizing the excellent viscosity-temperature performance, thermal conductivity and thermal oxidation stability of polyalkylene glycol, the disadvantages of poor compatibility of sealing materials and poor solubility in other additives when polyalkylene glycol is used alone are improved, so that the base oil component maintains good comprehensive performance.

[0033] In terms of mass percentage, the base material in the elevator traction machine lubricating oil of the present invention includes 0.3-0.8% antioxidant, preferably 0.50-0.75%. In the present invention, the antioxidant is preferably alkylphenol and alkylaniline; the mass ratio of the alkylphenol and alkylaniline is preferably 1-3:1, more preferably 1.5-2:1. In the present invention, the alkylphenol is preferably 2,6-di-tert-butyl-p-cresol; the alkylaniline is preferably butyl-octyl diphenylamine. In the present invention, the 2,6-di-tert-butyl-p-cresol is preferably T501 of Jinzhou Kangtai Lubricating Oil Additive Co., Ltd., and the butyl-octyl diphenylamine is preferably IRGANOX L57 of BASF. The present invention preferably uses 2,6-di-tert-butyl-p-cresol and butyl-octyl diphenylamine as antioxidants, which can synergistically improve the antioxidant properties of the lubricating oil, prevent premature oxidation and decay, and extend the oil change cycle and service life.

[0034] According to the percentage by mass, the base material in the elevator traction machine lubricating oil of the present invention includes 0.05-0.1% of metal passivator, preferably 0.06-0.09%, and more preferably 0.07-0.08%. In the present invention, the metal passivator is preferably a benzotriazole derivative, and the benzotriazole derivative is preferably N,N-bis(2-ethylhexyl)-4-methyl-benzotriazole-1-methylamine. In the present invention, the N,N-bis(2-ethylhexyl)-4-methyl-benzotriazole-1-methylamine is preferably Irgamet 39 of BASF. The present invention preferably uses benzotriazole derivatives as metal passivators, which can enhance the anti-corrosion protection of the copper parts of the worm gear of the elevator traction machine by the lubricating oil.

[0035] In terms of mass percentage, the base material in the elevator traction machine lubricating oil of the present invention includes 0.3-0.8% of extreme pressure anti-wear agent, preferably 0.50-0.75%. In the present invention, the extreme pressure anti-wear agent is tri-dodecyl dodecyl quaternary phosphonium salt docusate ionic liquid and dioctyl phosphate dodecylamine salt, and the mass ratio of the tri-dodecyl dodecyl quaternary phosphonium salt docusate ionic liquid to dioctyl phosphate dodecylamine salt is preferably 1-3:1, more preferably 1.5-2:1. In the present invention, the dioctyl phosphate dodecylamine salt is preferably Irgalube 349 of BASF. The present invention does not specifically limit the source of the tri-dodecyl dodecyl quaternary phosphonium salt docusate ionic liquid, and can be prepared by a method well known to those skilled in the art (Fan Mingjin, Yang Desuo, Wang Xiaoling, et al. DOSS-Based QAILs: As Both Neat Lubricants and Lubricant Additives with Excellent Tribological Properties and Good Detergency. Industrial & Engineering Chemistry Research, 2014, 53 (46): 17952-17960). The present invention uses tri-dodecyl dodecyl quaternary phosphonium salt docusate ionic liquid and dioctyl phosphate dodecylamine salt as extreme pressure anti-wear agents, which have a good positive synergistic effect with each other, greatly improve the extreme pressure and anti-wear performance, and do not contain active sulfur components, which is beneficial to protecting the copper parts of the elevator traction machine and solving the contradiction between extreme pressure and corrosion resistance.

[0036] In terms of mass percentage, the base material in the elevator traction machine lubricating oil of the present invention includes 0.2-0.5% friction reducer, preferably 0.30-0.45%. In the present invention, the friction reducer is an inactive boric acid ester and an oil-soluble organic molybdenum salt; the mass ratio of the inactive boric acid ester to the oil-soluble organic molybdenum salt is preferably 1.0-1.5:1.0, more preferably 1.00-1.25:1.00. In the present invention, the inactive boric acid ester is preferably a boron amide complex; in an embodiment of the present invention, the inactive boric acid ester is specifically Vanlube 289 of Vanderbilt. In the present invention, the oil-soluble organic molybdenum salt is preferably a dialkyl dithiocarbamate molybdenum; in an embodiment of the present invention, the dialkyl dithiocarbamate molybdenum is preferably SAKURA-LUBE 525 of ADEKA. The present invention adopts inactive boric acid ester and oil-soluble organic molybdenum as friction reducers, has good friction reduction performance, can reduce the friction coefficient and traction coefficient of lubricating oil, can improve the transmission efficiency of elevator traction machine in practical application, and has good compatibility with other additives.

[0037] In terms of mass percentage, the base material in the elevator traction machine lubricating oil of the present invention includes 0.05-0.1% of the rust inhibitor, preferably 0.06-0.08%. In the present invention, the rust inhibitor is preferably heptadecenyl imidazoline alkenyl succinate; in the embodiment of the present invention, the heptadecenyl imidazoline alkenyl succinate is specifically T703 of Shanghai Midgard Chemical Co., Ltd. The present invention preferably uses heptadecenyl imidazoline alkenyl succinate as the rust inhibitor, which not only has good rust prevention performance, but also has good compatibility with other additives.

[0038] The elevator traction machine lubricating oil of the present invention includes an antifoaming agent, and the mass of the antifoaming agent is 0.001-0.02% of the mass of the base material, preferably 0.005-0.01%. In the present invention, the antifoaming agent is preferably a silicon antifoaming agent and a non-silicon antifoaming agent; the silicon antifoaming agent is preferably polymethyl silicone oil; the non-silicon antifoaming agent is preferably polyacrylate. In the present invention, the mass ratio of the silicon antifoaming agent and the non-silicon antifoaming agent is preferably 1-3:1-3, more preferably 1-2:1-2. In the present invention, the silicon antifoaming agent polymethyl silicone oil is preferably T901 of Shanghai Shenpu Fine Chemical Factory, and the non-silicon antifoaming agent polyacrylate is preferably T912 of Shanghai Shenpu Fine Chemical Factory. The present invention limits the amount of the antifoaming agent to the above range, which can maintain certain foam characteristics and avoid the occurrence of dry friction caused by the destruction of the oil film due to bubbles in the use of the lubricating oil.

[0039] The present invention provides a method for preparing the elevator traction machine lubricating oil according to the above technical solution, comprising the following steps:

[0040] The water-soluble polyalkylene glycol, the oil-soluble polyether, the antioxidant, the metal passivator, the extreme pressure anti-wear agent, the friction reducer, the rust inhibitor and the anti-foaming agent are mixed to obtain the elevator traction machine lubricating oil.

[0041] The present invention preferably mixes water-soluble polyalkylene glycol and oil-soluble polyether to obtain a base oil component; adds the antioxidant, metal passivator, extreme pressure anti-wear agent, friction reducer, rust inhibitor and anti-foaming agent to the base oil component under stirring at 60-80°C, continues stirring at 60-80°C for 3-5 hours after the addition is completed to make the obtained mixed material uniform and transparent, and obtains the elevator traction machine lubricating oil after cooling. In an embodiment of the present invention, the mixing is preferably carried out in a stainless steel blending kettle with a stirrer.

[0042] The present invention provides the use of the elevator traction machine lubricating oil described in the above technical solution or the elevator traction machine lubricating oil prepared by the preparation method described in the above technical solution in the lubrication of the elevator traction machine worm gear transmission system.

[0043] The technical solutions in the present invention will be described clearly and completely below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] Some of the raw materials involved in the following examples and comparative examples include:

[0045] The water-soluble polyalkylene glycols include synthetic oil SDM-03C and synthetic oil SDM-08D, both of which were purchased from Nanjing Well Chemical Co., Ltd. The kinematic viscosity of synthetic oil SDM-03C at 40°C is 99.08 mm 2 / s, the kinematic viscosity of synthetic oil SDM-08D at 40°C is 1042mm 2 / s;

[0046] Oil-soluble polyether (OSP) synthetic oil OSP32 was purchased from Nanjing Gutian Chemical Co., Ltd., with a kinematic viscosity of 31.35 mm at 40 °C. 2 / s;

[0047] 2,6-di-tert-butyl-p-cresol is T501 produced by Jinzhou Kangtai Lubricant Additives Co., Ltd.;

[0048] Butyl octyl diphenylamine is IRGANOX L57 from BASF;

[0049] N,N-Bis(2-ethylhexyl)-4-methyl-benzotriazole-1-methylamine is Irgamet 39 from BASF;

[0050] Dioctyl phosphate dodecylamine salt is Irgalube 349 from BASF;

[0051] The inactive borate ester was Vanlube 289 from Vanderbilt;

[0052] The molybdenum dialkyldithiocarbamate was SAKURA-LUBE 525 from ADEKA;

[0053] Heptadecenyl imidazoline succinate is T703 from Shanghai Midgard Chemical Co., Ltd.;

[0054] The silicone antifoaming agent polymethyl silicone oil is T901 from Shanghai Shenpu Fine Chemical Factory;

[0055] The non-silicon antifoaming agent polyacrylate is T912 from Shanghai Shenpu Fine Chemical Factory;

[0056] The preparation method of tri-dodecyl dodecyl quaternary phosphonium salt docusate ionic liquid is as follows:

[0057] In a three-necked round-bottom flask, add equimolar amounts of tri-dodecylphosphine and dodecane bromide and acetonitrile as solvent, and react at 70°C in an inert gas for 8 h. After the reaction, remove the solvent by rotary evaporation to obtain a bright yellow oily viscous liquid, which is recorded as P 12121212Br ; Add an equal molar amount of P into a three-necked round-bottom flask. 12121212Br and sodium dioctyl phosphate, and add anhydrous ethanol to 12121212Br and sodium dioctyl phosphate are completely dissolved, and the reaction is stirred at 50°C for 8 hours. After the reaction is completed, dichloromethane is added to dissolve the obtained product system, which is washed with distilled water, then dried with anhydrous sodium sulfate, filtered, and the filtrate is subjected to reduced pressure distillation to remove the solvent. The obtained light yellow transparent oily liquid is tri-dodecyl dodecyl quaternary phosphonium salt docusate ionic liquid.

[0058] The elevator traction machine lubricating oils in the following examples and comparative examples were all prepared in a stainless steel blending kettle with a stirrer.

[0059] Example 1

[0060] 60.1 g of water-soluble polyalkylene glycol synthetic oil SDM-08D and 10.0 g of oil-soluble polyether synthetic oil OSP32 were added to 27.6 g of water-soluble polyalkylene glycol synthetic oil SDM-03C, and the mixture was heated to 70 ± 5 °C and stirred. Then, 0.60 g of 2,6-di-tert-butyl-p-cresol, 0.20 g of butyl octyl diphenylamine, 0.1 g of N,N-bis(2-ethylhexyl)-4-methyl-benzotriazole-1-methylamine, and 0.60 g of Tri-dodecyl dodecyl quaternary phosphonium docusate ionic liquid, 0.20 g of dioctyl phosphate dodecylamine salt, 0.30 g of inactive borate, 0.20 g of dialkyl dithiocarbamate molybdenum, 0.1 g of heptadecenyl imidazoline alkenyl succinate, 0.0133 g of silicon-type antifoaming agent polymethyl silicone oil and 0.0067 g of non-silicon-type antifoaming agent polyacrylate are stirred at 70±5°C for 3 h and cooled to room temperature (25°C) to obtain elevator traction machine lubricating oil.

[0061] Example 2

[0062] 71.1 g of water-soluble polyalkylene glycol synthetic oil SDM-08D and 5.0 g of oil-soluble polyether synthetic oil OSP32 were added to 21.8 g of water-soluble polyalkylene glycol synthetic oil SDM-03C, and the mixture was heated to 70 ± 5 °C and stirred. Then, 0.50 g of 2,6-di-tert-butyl-p-cresol, 0.25 g of butyl octyl diphenylamine, 0.07 g of N,N-bis(2-ethylhexyl)-4-methyl-benzotriazole-1-methylamine, and 0.50 g of Tri-dodecyl dodecyl quaternary phosphonium docusate ionic liquid, 0.25 g of dioctyl phosphate dodecylamine salt, 0.25 g of inactive borate, 0.20 g of dialkyl dithiocarbamate molybdenum, 0.08 g of heptadecenyl imidazoline alkenyl succinate, 0.005 g of silicon-type antifoaming agent polymethyl silicone oil and 0.005 g of non-silicon-type antifoaming agent polyacrylate are stirred at 70±5°C for 3 h and cooled to room temperature (25°C) to obtain elevator traction machine lubricating oil.

[0063] Example 3

[0064] 71.6 g of water-soluble polyalkylene glycol synthetic oil SDM-08D and 3.0 g of oil-soluble polyether synthetic oil OSP32 were added to 24.5 g of water-soluble polyalkylene glycol synthetic oil SDM-03C, and the mixture was heated to 70 ± 5 ° C and stirred. Then, 0.15 g of 2,6-di-tert-butyl-p-cresol, 0.15 g of butyl-octyl diphenylamine, 0.05 g of N,N-bis(2-ethylhexyl)-4-methyl-benzotriazole-1-methylamine, and 0.15 g of tris(2-ethylhexyl)-4-methyl-benzotriazole-1-methylamine were added. -dodecyl dodecyl quaternary phosphonium salt docusate ionic liquid, 0.15g of dioctyl phosphate dodecylamine salt, 0.10g of inactive borate, 0.10g of dialkyl dithiocarbamate molybdenum, 0.05g of heptadecenyl imidazoline alkenyl succinate, 0.0003g of silicon-type antifoaming agent polymethyl silicone oil and 0.0007g of non-silicon-type antifoaming agent polyacrylate, stirred at 70±5℃ for 3h, cooled to room temperature (25℃) to obtain elevator traction machine lubricating oil.

[0065] Comparative Example 1

[0066] Elevator traction machine lubricating oil was prepared according to Example 3, except that 0.15 g of tri-dodecyl dodecyl quaternary phosphonium docusate ionic liquid and 0.15 g of dioctyl phosphate dodecylamine salt were replaced with 0.30 g of dioctyl phosphate dodecylamine salt.

[0067] Comparative Example 2

[0068] Elevator traction machine lubricating oil was prepared according to Example 3, except that 0.10 g of inactive boric acid ester and 0.10 g of molybdenum dialkyldithiocarbamate were replaced with 0.20 g of molybdenum dialkyldithiocarbamate.

[0069] Comparative Example 3

[0070] The elevator traction machine lubricating oil was prepared according to Example 3, except that 0.15 g of tri-dodecyl dodecyl quaternary phosphonium docusate ionic liquid and 0.15 g of dioctyl phosphate dodecylamine salt were replaced with 0.15 g of tri-dodecyl methyl quaternary ammonium docusate ionic liquid and 0.15 g of dioctyl phosphate octadecylamine salt.

[0071] The performance tests were conducted on the elevator traction machine lubricating oils prepared in the examples and comparative examples. The results are shown in Table 1.

[0072] Table 1 Performance test results of elevator traction machine lubricating oil prepared in the embodiment and comparative example

[0073]

[0074]

[0075] As shown in Table 1, the elevator traction machine lubricating oil provided by the present invention has excellent viscosity-temperature performance and excellent thermal oxidation stability, can effectively prevent the formation of sludge, and has excellent anti-wear protection performance, low friction coefficient, excellent anti-corrosion and anti-rust performance, and has the characteristics of low pour point, and has good anti-foaming performance and rubber compatibility. At the same time, compared with Comparative Example 1, the elevator traction machine lubricating oil prepared in Example 3 has excellent extreme pressure and anti-wear performance, indicating that the present invention uses tri-dodecyl dodecyl quaternary phosphonium salt docusate ionic liquid and dioctyl phosphate dodecylamine salt to produce a good positive synergistic effect, greatly improving the extreme pressure and anti-wear performance of the lubricating oil; compared with Comparative Example 2, the elevator traction machine lubricating oil prepared in Example 3 has excellent friction reduction performance, indicating that the present invention uses inactive boric acid ester and dialkyl dithiocarbamate molybdenum compound, and the two produce a good synergistic effect, which can reduce the friction coefficient of the lubricating oil.

[0076] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An elevator traction machine lubricating oil, comprising a base material and an antifoaming agent, wherein the mass of the antifoaming agent is 0.001-0.02% of the mass of the base material; The matrix material includes the following components in percentage by mass: Water-soluble polyalkylene glycol 87.7~96.1%, oil-soluble polyether 3.0~10.0%, antioxidant 0.3~0.8%, metal passivator 0.05~0.1%, extreme pressure anti-wear agent 0.3~0.8%, friction reducer 0.2~0.5%, rust inhibitor 0.05~0.1%; The extreme pressure anti-wear agent is tri-dodecyl dodecyl quaternary phosphonium docusate ionic liquid and dioctyl phosphate dodecylamine salt; the mass ratio of the tri-dodecyl dodecyl quaternary phosphonium docusate ionic liquid to dioctyl phosphate dodecylamine salt is 1-3:1; The friction reducer is an inactive boric acid ester and an oil-soluble organic molybdenum salt; the inactive boric acid ester is a boron amide complex, and the oil-soluble organic molybdenum salt is a dialkyl dithiocarbamate molybdenum.

2. The elevator traction machine lubricating oil according to claim 1, characterized in that: The mass ratio of the inactive boric acid ester to molybdenum dialkyl dithiocarbamate is 1.0-1.5:1.

0.

3. The elevator traction machine lubricating oil according to claim 1, characterized in that: The water-soluble polyalkylene glycol includes synthetic oil SDM-03C and synthetic oil SDM-08D; the kinematic viscosity of the water-soluble polyalkylene glycol at 40°C is 40-2200 mm 2 / s.

4. The elevator traction machine lubricating oil according to claim 1, characterized in that: The kinematic viscosity of the oil-soluble polyether at 40°C is 15-250 mm 2 / s; the raw materials for preparing the oil-soluble polyether include monomers and initiators, the monomers include butylene oxide and propylene oxide, and the initiator is an alcohol compound.

5. The elevator traction machine lubricating oil according to claim 1, characterized in that: The antioxidants are alkylphenol and alkylaniline, and the mass ratio of the alkylphenol to the alkylaniline is 1-3:

1.

6. The elevator traction machine lubricating oil according to claim 1, characterized in that: The metal passivator is a benzotriazole derivative; the rust inhibitor is heptadecenyl imidazoline alkenyl succinate; and the antifoaming agent is a silicon-type antifoaming agent and a non-silicon-type antifoaming agent.

7. The method for preparing the elevator traction machine lubricating oil according to any one of claims 1 to 6, comprising the following steps: The water-soluble polyalkylene glycol, the oil-soluble polyether, the antioxidant, the metal passivator, the extreme pressure anti-wear agent, the friction reducer, the rust inhibitor and the anti-foaming agent are mixed to obtain the elevator traction machine lubricating oil.

8. Use of the elevator traction machine lubricating oil according to any one of claims 1 to 7 or the elevator traction machine lubricating oil prepared by the preparation method according to claim 7 in lubrication of an elevator traction machine worm gear transmission system.

Images