CN105255571A - Low-noise grease and preparation method thereof - Google Patents
Low-noise grease and preparation method thereof Download PDFInfo
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- CN105255571A CN105255571A CN201510677341.7A CN201510677341A CN105255571A CN 105255571 A CN105255571 A CN 105255571A CN 201510677341 A CN201510677341 A CN 201510677341A CN 105255571 A CN105255571 A CN 105255571A
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Abstract
The invention discloses low-noise grease. The low-noise grease comprises raw materials in parts by weight as follows: 7-8 parts of 12-hydroxystearic acid, 6-7 parts of boric acid, 5-6 parts of lithium hydroxide, 2-4 parts of calcium hydroxide, 14-16 parts of water, 50-60 parts of base oil A, 35-40 parts of base oil B, 0.5-1 part of an antioxidant A, 0.5-1 part of an antioxidant B, 0.5-0.8 parts of an antirust agent and 0.5-1 part of an extreme pressure anti-wear reagent. During preparation, the raw materials have a heating reaction and are stirred and mixed according to different temperatures and certain sequence and are processed according to related process requirements. The grease product has excellent low-noise characteristic, high-temperature resistance, oxidation resistance, low-temperature fluidity, extreme pressure anti-wear property, shear stability, water resistance, colloid stability and long service life.
Description
Technical field
The present invention relates to lubricating grease field, specifically a kind of low-noise lubricating grease and preparation method thereof.
Background technology
Along with the universal of China's business automation equipment, household electrical appliance and other electrical equipment facility and Quality advance, require more and more higher to the low noise of various bearing, new military hardware is also had higher requirement to bearing noise.Along with the progress of the manufacturing technology such as design bearing, working accuracy, the noise of bearing itself be improved significantly, problems faced will solve the noise that bearing enclosed lubricating grease produces.Therefore, the lubricating grease of research and development high quality, low noise, reduce the problem that bearing noise has become domestic and international common concern, technician has done a large amount of research-and-development activitys to low-noise lubricating grease, and the certain effect obtained.
Make a general survey of the R and D of domestic and international low-noise lubricating grease, mostly concentrate on and select suitable base oil, viscosifying agent and suitable production technique to reach the object reducing noise to the shape controlling lubricating grease fiber.Base oil accounts for about 90% in lubricating grease, and the lubricating quality of lubricating grease depends on the lubricating quality of base oil, so selecting properly lubricating oil is very important as grease base plinth oil.Although viscosifying agent only accounts for about 10% of whole lubricating grease, it is conclusive on the impact of PERFORMANCE OF GREASES, also has important impact accordingly on bear vibration noise.Based on lithium soap grease, complex lithium grease and polyurea grease in current existing low noise bearing lubricating grease kind.In the vibration performance of sealing bearing, the initiation value of lithium soap grease is lower, stationary value can be reached within the extremely short time, the startup quietness of lithium soap grease and the quiet better performances of running after special processing, but resistance to elevated temperatures, shear stability, water resisting property can not meet the development of bearing technology.Complex lithium grease improves anti-softening ability during high temperature, but cause fiber to strengthen the constraint ability of base oil simultaneously, static colloid divides oil lower, corresponding dynamically point oil is less, when molecule moves mutually, internal friction strengthens, apparent viscosity under identical rate of shear raises, and cause Starved Lubrication aggravation in the greasing of Sealed Rolling Bearing with Low Noise, bearing noise performance is not good enough.Polyurea grease has the advantages such as use temperature is high, and the life-span is long, good fluidity, but complex manufacturing, acoustic property are unstable, and quality product difficulty controls, and cost is higher.
Summary of the invention
The object of this invention is to provide a kind of low-noise lubricating grease and preparation method thereof, overcome prior art weak point, product use range is wide, effective.
The technical solution used in the present invention is as follows:
A kind of low-noise lubricating grease, comprises the raw material of following weight part: 12-oxystearic acid 7-8 part, boric acid 6-7 part, lithium hydroxide 5-6 part, calcium hydroxide 2-4 part, water 14-16 part, base oil A50-60 part, base oil B35-40 part, oxidation inhibitor A0.5-1 part, oxidation inhibitor B0.5-1 part, rust-preventive agent 0.5-0.8 part, extreme pressure anti-wear additives 0.5-1 part; Wherein, described base oil A is deep refining mineral oil 150N; Described base oil B is PAO-6; Described oxidation inhibitor A is phosphoric acid fourth octyl group zinc salt; Described oxidation inhibitor B is ditertbutylparacresol; Described rust-preventive agent is petroleum sodium sulfonate; Described extreme pressure anti-wear additives is tricresol phosphate fat.
Preferably see, the preparation method of described low-noise lubricating grease, specifically comprises the following steps:
(1) by formula rate, the base oil B of the base oil A and 20% of 60% is dropped in saponification still, add whole 12-oxystearic acid by formula rate when being warmed up to 60-80 DEG C and mix, stir and heat up;
(2) be warming up to 95-100 DEG C, by formula rate, boric acid water in proportion mixed, drop into the mixture of step (1), stir 5-10 minute;
(3) by formula rate, lithium hydroxide, calcium hydroxide and remaining water are mixed with even the joining in saponification still of alkali lye ， Zhuo to stir with the mixture of step (2), add capping and heat up;
(4) after intensification 50-60 minute, start when reactor temperature reaches 100-110 DEG C pressurization, pressurize after 60-80 minute, when reactor temperature reach 160-170 DEG C, pressure be 0.45-0.5Mpa time, constant voltage react 70-90 minute;
(5) constant voltage complete after beginning slowly evenly release, fuel charging valve, blow-off valve is opened after pressure zero, and be rapidly heated, adding residue base oil A when temperature is 170-190 DEG C, continuing to heat up refining to stopping during 210-220 DEG C heating and keeping 5-10 minute;
(6) in mediation still, the oxidation inhibitor A of formula rate and remaining base oil B is added, the mixture of step (5) is transferred to after filtering and is in harmonious proportion in still, carrying out agitation cycle makes it cool fast, starts to shear when cooling to 100-120 DEG C, and shear pressure is 0.6-0.8Mpa;
(7) shear after 20-40 minute, add the oxidation inhibitor B of formula rate, rust-preventive agent and extreme pressure anti-wear additives and join and be in harmonious proportion the mixture of still and step (6) and continue to stir and shear 20-40 minute;
(8) by the mixture of step (7) under 35-40MPa pressure homogeneous, mill, filter, degassed, sampling detects qualified rear discharging.
Beneficial effect of the present invention is:
The present invention is studied from the selection of base oil, viscosifying agent and the many-side such as saponification reaction control, type of cooling optimization of production technique link the impact of lubricating grease noise, not only effectively reduce noise when lubricating grease uses within the bearing, ensure that lubricating grease has better high thermal resistance, oxidation-resistance, low-temperature fluidity, extreme pressure anti-wear, shear stability, water resisting property and colloid stability simultaneously.
1, two kinds of high viscosity index (HVI) high-quality low viscosity base oil reasonable compatibilities are selected, the soap fiber of viscosifying agent adopts lipid acid lithium soap and lithium borate salt two kinds of compound cocrystallization to form simultaneously, improve refining temperature, the lubricating grease of preparation has the dropping point of more than 220 DEG C, and soap fibrous texture is short, has good high-temperature oxidation stability and low temperature flowability, effective reduction lubrication resistance and bearing noise, durable lubrication film can be formed, alleviate friction, long service life.
2, shorter in conjunction with quicklime grease fiber, there is the feature such as lower breakdown point and good water resisting property, shear stability.The present invention adds a certain amount of calcium soap and organically combines with lithium soap, improve the water repelling property of product, shear stability, water drenches number of dropouts (38 DEG C, 1h) be not more than 1%, effectively meet the lubricating requirement that rolling press works in wet condition, shorten staple length further simultaneously, reduce bearing noise.
3, viscosifying agent mesoboric acid salt improves product extreme pressure and antiwear behavior, and adds high-quality extreme-pressure anti-friction additive, and product has good extreme pressure anti-wear, and abrasion resistance wear scar diameter (392N, 60min) is not more than 0.5mm, P
bcan more than 1000N be reached, effectively prevent the wearing and tearing of friction pair, spot corrosion, the work-ing life of extension device.
4, by optimizing saponification, explained hereafter such as mediation still rapid quench and aftertreatment etc., in conjunction with the boric acid added in viscosifying agent, make product soap fibrous texture reasonable, mechanical stability is excellent, extend Drawing cone in-degree 100,000 changing values within 20, can avoid being extruded or occurring denseness loss in use procedure and run off, good with metal adhesion performance, there is when guaranteeing this product of use in winter good low-temperature fluidity and low noise characteristic simultaneously.
Embodiment
Embodiment 1
A kind of low-noise lubricating grease, comprises the raw material of following weight part: 12-oxystearic acid 7 parts, boric acid 6 parts, lithium hydroxide 5 parts, 2 parts, calcium hydroxide, 14 parts, water, base oil A50 part, base oil B35 part, oxidation inhibitor A0.5 part, oxidation inhibitor B0.5 part, rust-preventive agent 0.5 part, extreme pressure anti-wear additives 0.5 part; Wherein, described base oil A is deep refining mineral oil 150N; Described base oil B is PAO-6; Described oxidation inhibitor A is phosphoric acid fourth octyl group zinc salt; Described oxidation inhibitor B is ditertbutylparacresol; Described rust-preventive agent is petroleum sodium sulfonate; Described extreme pressure anti-wear additives is tricresol phosphate fat.
The preparation method of above-mentioned low-noise lubricating grease, specifically comprises the following steps:
(1) by formula rate, the base oil B of the base oil A and 20% of 60% is dropped in saponification still, add whole 12-oxystearic acid by formula rate when being warmed up to 60-80 DEG C and mix, stir and heat up;
(2) be warming up to 95-100 DEG C, by formula rate, boric acid water in proportion mixed, drop into the mixture of step (1), stir 5-10 minute;
(3) by formula rate, lithium hydroxide, calcium hydroxide and remaining water are mixed with even the joining in saponification still of alkali lye ， Zhuo to stir with the mixture of step (2), add capping and heat up;
(4) after intensification 50-60 minute, start when reactor temperature reaches 100-110 DEG C pressurization, pressurize after 60-80 minute, when reactor temperature reach 160-170 DEG C, pressure be 0.45-0.5Mpa time, constant voltage react 70-90 minute;
(5) constant voltage complete after beginning slowly evenly release, the valve such as fuel charging valve, blow-off valve is opened after pressure zero, and be rapidly heated, adding residue base oil A when temperature is 170-190 DEG C, continuing to heat up refining to stopping during 210-220 DEG C heating and keeping 5-10 minute;
(6) in mediation still, the oxidation inhibitor A of formula rate and remaining base oil B is added, the mixture of step (5) is transferred to after filtering and is in harmonious proportion in still, carrying out agitation cycle makes it cool fast, starts to shear when cooling to 100-120 DEG C, and shear pressure is 0.6-0.8Mpa;
(7) shear after 20-40 minute, add the oxidation inhibitor B of formula rate, rust-preventive agent and extreme pressure anti-wear additives and join and be in harmonious proportion the mixture of still and step (6) and continue to stir and shear 20-40 minute;
(8) by the mixture of step (7) under 35-40MPa pressure homogeneous, mill, filter, degassed, sampling detects qualified rear discharging.
Embodiment 2
A kind of low-noise lubricating grease, comprises the raw material of following weight part: 12-oxystearic acid 7.5 parts, boric acid 6.5 parts, lithium hydroxide 5.5 parts, 3 parts, calcium hydroxide, 15 parts, water, base oil A55 part, base oil B38 part, oxidation inhibitor A0.6 part, oxidation inhibitor B0.6 part, rust-preventive agent 0.6 part, extreme pressure anti-wear additives 0.6 part; Wherein, described base oil A is deep refining mineral oil 150N; Described base oil B is PAO-6; Described oxidation inhibitor A is phosphoric acid fourth octyl group zinc salt; Described oxidation inhibitor B is ditertbutylparacresol; Described rust-preventive agent is petroleum sodium sulfonate; Described extreme pressure anti-wear additives is tricresol phosphate fat.
The preparation method of above-mentioned low-noise lubricating grease, specifically comprises the following steps:
(1) by formula rate, the base oil B of the base oil A and 20% of 60% is dropped in saponification still, add whole 12-oxystearic acid by formula rate when being warmed up to 60-80 DEG C and mix, stir and heat up;
(2) be warming up to 95-100 DEG C, by formula rate, boric acid water in proportion mixed, drop into the mixture of step (1), stir 5-10 minute;
(3) by formula rate, lithium hydroxide, calcium hydroxide and remaining water are mixed with even the joining in saponification still of alkali lye ， Zhuo to stir with the mixture of step (2), add capping and heat up;
(4) after intensification 50-60 minute, start when reactor temperature reaches 100-110 DEG C pressurization, pressurize after 60-80 minute, when reactor temperature reach 160-170 DEG C, pressure be 0.45-0.5Mpa time, constant voltage react 70-90 minute;
(5) constant voltage complete after beginning slowly evenly release, the valve such as fuel charging valve, blow-off valve is opened after pressure zero, and be rapidly heated, adding residue base oil A when temperature is 170-190 DEG C, continuing to heat up refining to stopping during 210-220 DEG C heating and keeping 5-10 minute;
(6) in mediation still, the oxidation inhibitor A of formula rate and remaining base oil B is added, the mixture of step (5) is transferred to after filtering and is in harmonious proportion in still, carrying out agitation cycle makes it cool fast, starts to shear when cooling to 100-120 DEG C, and shear pressure is 0.6-0.8Mpa;
(7) shear after 20-40 minute, add the oxidation inhibitor B of formula rate, rust-preventive agent and extreme pressure anti-wear additives and join and be in harmonious proportion the mixture of still and step (6) and continue to stir and shear 20-40 minute;
(8) by the mixture of step (7) under 35-40MPa pressure homogeneous, mill, filter, degassed, sampling detects qualified rear discharging.
Embodiment 3
A kind of low-noise lubricating grease, comprises the raw material of following weight part: 12-oxystearic acid 8 parts, boric acid 7 parts, lithium hydroxide 6 parts, 4 parts, calcium hydroxide, 16 parts, water, base oil A60 part, base oil B40 part, oxidation inhibitor A1 part, oxidation inhibitor B1 part, rust-preventive agent 0.8 part, extreme pressure anti-wear additives 1 part; Wherein, described base oil A is deep refining mineral oil 150N; Described base oil B is PAO-6; Described oxidation inhibitor A is phosphoric acid fourth octyl group zinc salt; Described oxidation inhibitor B is ditertbutylparacresol; Described rust-preventive agent is petroleum sodium sulfonate; Described extreme pressure anti-wear additives is tricresol phosphate fat.
The preparation method of above-mentioned low-noise lubricating grease, specifically comprises the following steps:
(1) by formula rate, the base oil B of the base oil A and 20% of 60% is dropped in saponification still, add whole 12-oxystearic acid by formula rate when being warmed up to 60-80 DEG C and mix, stir and heat up;
(2) be warming up to 95-100 DEG C, by formula rate, boric acid water in proportion mixed, drop into the mixture of step (1), stir 5-10 minute;
(3) by formula rate, lithium hydroxide, calcium hydroxide and remaining water are mixed with even the joining in saponification still of alkali lye ， Zhuo to stir with the mixture of step (2), add capping and heat up;
(4) after intensification 50-60 minute, start when reactor temperature reaches 100-110 DEG C pressurization, pressurize after 60-80 minute, when reactor temperature reach 160-170 DEG C, pressure be 0.45-0.5Mpa time, constant voltage react 70-90 minute;
(5) constant voltage complete after beginning slowly evenly release, the valve such as fuel charging valve, blow-off valve is opened after pressure zero, and be rapidly heated, adding residue base oil A when temperature is 170-190 DEG C, continuing to heat up refining to stopping during 210-220 DEG C heating and keeping 5-10 minute;
(6) in mediation still, the oxidation inhibitor A of formula rate and remaining base oil B is added, the mixture of step (5) is transferred to after filtering and is in harmonious proportion in still, carrying out agitation cycle makes it cool fast, starts to shear when cooling to 100-120 DEG C, and shear pressure is 0.6-0.8Mpa;
(7) shear after 20-40 minute, add the oxidation inhibitor B of formula rate, rust-preventive agent and extreme pressure anti-wear additives and join and be in harmonious proportion the mixture of still and step (6) and continue to stir and shear 20-40 minute;
(8) by the mixture of step (7) under 35-40MPa pressure homogeneous, mill, filter, degassed, sampling detects qualified rear discharging.
Application note of the present invention:
This product be mainly applicable to high/low temperature, at a high speed, the precise rolling bearing of the various micro motors of ultra-low torque requirement and other lubrications compared with the rolling bearing of underload equipment, especially have the lubrication of the high-grade precision bearing such as industrial precision instrument, household electrical appliance, power tool, office equipment of quiet requirement.
Use temperature :-40 ~ 180 DEG C.
The performance detection data of lubricating grease of the present invention is as following table 1:
Table 1 is the performance detection data of lubricating grease of the present invention
As can be seen from Table 1:
Grease product of the present invention has excellent low noise characteristic and high thermal resistance, oxidation-resistance, low-temperature fluidity, extreme pressure anti-wear, shear stability, water resisting property, colloid stability.
Claims (2)
1. a low-noise lubricating grease, is characterized in that: the raw material comprising following weight part: 12-oxystearic acid 7-8 part, boric acid 6-7 part, lithium hydroxide 5-6 part, calcium hydroxide 2-4 part, water 14-16 part, base oil A50-60 part, base oil B35-40 part, oxidation inhibitor A0.5-1 part, oxidation inhibitor B0.5-1 part, rust-preventive agent 0.5-0.8 part, extreme pressure anti-wear additives 0.5-1 part; Wherein, described base oil A is deep refining mineral oil 150N; Described base oil B is PAO-6; Described oxidation inhibitor A is phosphoric acid fourth octyl group zinc salt; Described oxidation inhibitor B is ditertbutylparacresol; Described rust-preventive agent is petroleum sodium sulfonate; Described extreme pressure anti-wear additives is tricresol phosphate fat.
2. the preparation method of low-noise lubricating grease according to claim 1, is characterized in that: specifically comprise the following steps:
(1) by formula rate, the base oil B of the base oil A and 20% of 60% is dropped in saponification still, add whole 12-oxystearic acid by formula rate when being warmed up to 60-80 DEG C and mix, stir and heat up;
(2) be warming up to 95-100 DEG C, by formula rate, boric acid water in proportion mixed, drop into the mixture of step (1), stir 5-10 minute;
(3) by formula rate, lithium hydroxide, calcium hydroxide and remaining water are mixed with even the joining in saponification still of alkali lye ， Zhuo to stir with the mixture of step (2), add capping and heat up;
(4) after intensification 50-60 minute, start when reactor temperature reaches 100-110 DEG C pressurization, pressurize after 60-80 minute, when reactor temperature reach 160-170 DEG C, pressure be 0.45-0.5Mpa time, constant voltage react 70-90 minute;
(5) constant voltage complete after beginning slowly evenly release, fuel charging valve, blow-off valve is opened after pressure zero, and be rapidly heated, adding residue base oil A when temperature is 170-190 DEG C, continuing to heat up refining to stopping during 210-220 DEG C heating and keeping 5-10 minute;
(6) in mediation still, the oxidation inhibitor A of formula rate and remaining base oil B is added, the mixture of step (5) is transferred to after filtering and is in harmonious proportion in still, carrying out agitation cycle makes it cool fast, starts to shear when cooling to 100-120 DEG C, and shear pressure is 0.6-0.8Mpa;
(7) shear after 20-40 minute, add the oxidation inhibitor B of formula rate, rust-preventive agent and extreme pressure anti-wear additives and join and be in harmonious proportion the mixture of still and step (6) and continue to stir and shear 20-40 minute;
(8) by the mixture of step (7) under 35-40MPa pressure homogeneous, mill, filter, degassed, sampling detects qualified rear discharging.
Priority Applications (1)
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| CN201510677341.7A CN105255571A (en) | 2015-10-15 | 2015-10-15 | Low-noise grease and preparation method thereof |
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| CN201510677341.7A CN105255571A (en) | 2015-10-15 | 2015-10-15 | Low-noise grease and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106147944A (en) * | 2016-06-27 | 2016-11-23 | 宁波启航润滑油有限公司 | A kind of new technology preparing low-noise lubricating grease |
| CN107502416A (en) * | 2017-09-30 | 2017-12-22 | 徐州翔凯重工科技有限公司 | A kind of engineering machinery fire-resistant lubricants composition and preparation method thereof |
| CN110028996A (en) * | 2019-03-15 | 2019-07-19 | 杭州颢熙科技有限公司 | A kind of lubricant composition |
| CN111704951A (en) * | 2020-06-29 | 2020-09-25 | 金鹰润滑材料(金湖)有限公司 | Ultralow-temperature silent bearing lubricating grease and preparation process thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106147944A (en) * | 2016-06-27 | 2016-11-23 | 宁波启航润滑油有限公司 | A kind of new technology preparing low-noise lubricating grease |
| CN107502416A (en) * | 2017-09-30 | 2017-12-22 | 徐州翔凯重工科技有限公司 | A kind of engineering machinery fire-resistant lubricants composition and preparation method thereof |
| CN110028996A (en) * | 2019-03-15 | 2019-07-19 | 杭州颢熙科技有限公司 | A kind of lubricant composition |
| CN111704951A (en) * | 2020-06-29 | 2020-09-25 | 金鹰润滑材料(金湖)有限公司 | Ultralow-temperature silent bearing lubricating grease and preparation process thereof |
| CN111704951B (en) * | 2020-06-29 | 2022-06-03 | 金鹰润滑材料(金湖)有限公司 | Ultralow-temperature silent bearing lubricating grease and preparation process thereof |
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Application publication date: 20160120 |