Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of ultra-low temperature silent bearing lubricating grease and its preparation process

A silent bearing and lubricating grease technology, which is applied in the field of lubricating grease, can solve the problems of large viscosity changes of lubricating grease, many impurities, and large starting torque of bearings, etc., achieve low starting/running torque, improve thickener distribution, and excellent low temperature The effect of flow properties

Active Publication Date: 2022-06-03
金鹰润滑材料(金湖)有限公司
View PDF14 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under ultra-low temperature conditions, the viscosity of the grease changes too much, resulting in a large starting torque of the bearing. Long-term use will cause damage to the machine motor and other components, thus affecting the normal use of the equipment
At present, there are some relatively good products on the market, mainly lithium-based grease prepared by using low-viscosity polyalphaolefin (PAO) as the base oil. There are many, and the requirements for post-production processing are relatively high, and the stability of product quality is difficult to guarantee

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of ultra-low temperature silent bearing lubricating grease and its preparation process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The preparation of raw materials involved in the following examples:

[0036] Take 420gPAO6 and 180gPAO4 and mix to form a mixed oil, which is placed in the production intermediate tank for standby;

[0037] Weigh 10 g of lithium hydroxide, add 80 g of water and mix it to prepare a lithium hydroxide solution;

[0038] Additives: 5g diphenylamine, 5g dihexadi-tert-butyl-p-cresol and 10g barium petroleum sulfonate;

[0039] Take 150g of PAO4 and PAO6 mixed oil, add 50g of nano-scale PTFE powder to it, and uniformly disperse by high-speed ultrasonic to form a nano-scale PTFE solution;

[0040] Take 350g of PAO4 and PAO6 mixed oil and add it to the reactor and heat up to 90°C, add 70g of dodecahydroxystearic acid to the reactor, stir and dissolve evenly, filter for 1h in a loop, filter precision 1μm, and the temperature of the reactor material is warmed up to At 95 °C, add 90 g of lithium hydroxide aqueous solution, continue to heat up to 205 °C after saponification for 3...

Embodiment 2

[0042] Raw material preparation: Mix 420gPAO6 and 180gPAO4 to form a mixed oil, which is placed in the production intermediate tank for use;

[0043] Weigh 10 g of lithium hydroxide, add 80 g of water and mix it to prepare a lithium hydroxide solution;

[0044] Additives: 10g diphenylamine and 10g barium petroleum sulfonate;

[0045] Take 100g of PAO4 and PAO6 mixed oil, add 50g of nano-scale PTFE powder to it, and uniformly disperse by high-speed ultrasonic to form a nano-scale PTFE solution;

[0046]Take 300g of PAO4 and PAO6 mixed oil and add it to the reaction kettle and heat up to 90°C, add 70g of dodecylhydroxystearic acid to the reaction kettle, stir and dissolve evenly, filter for 1.5h in a filter cycle, filter precision 2μm, and heat up the temperature of the material in the reaction kettle When it reaches 100 °C, add 90 g of lithium hydroxide aqueous solution, continue to heat up to 210 °C after saponification for 3 hours, add 100 g of synthetic ester, stir for 5 mi...

Embodiment 3

[0048] Raw material preparation: Mix 600gPAO6 and 400gPAO4 to form a mixed oil, which is placed in the production intermediate tank for use;

[0049] Weigh 12g of lithium hydroxide, add 80g of water and mix it to prepare a lithium hydroxide solution;

[0050] Additives: 10g diphenylamine, 10g dihexadi-tert-butyl-p-cresol and 10g barium petroleum sulfonate;

[0051] Take 150g of PAO4 and PAO6 mixed oil, add 100g of nano-scale PTFE powder to it, and uniformly disperse by high-speed ultrasonic to form a nano-scale PTFE solution;

[0052] Take 400g of PAO4 and PAO6 mixed oil and add it to the reaction kettle and heat up to 100°C, add 120g of dodecahydroxystearic acid to the reaction kettle, stir and dissolve evenly, filter for 1.5h in a circulating filter, filter accuracy 2μm, and heat up the temperature of the material in the reaction kettle When it reaches 102 °C, add 92 g of lithium hydroxide aqueous solution, continue to heat up to 218 °C after saponification for 3 hours, add...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an ultra-low temperature silent bearing lubricating grease and a process thereof, which are prepared from the following raw materials in parts by weight: 50-75 parts of PAO4 and PAO6 mixed oil, 7-12 parts of lauryl hydroxystearic acid, 1.2-1.8 parts of hydrogen Lithium oxide, 5-15 parts of synthetic ester, 1-5 parts of additives, 1-10 parts of nano-sized PTFE powder. The invention can reach a very high level when the bearing starts at low temperature and the noise of the bearing at normal temperature. The low temperature start of the bearing mainly reflects the starting situation and noise of the bearing at low temperature, such as -50°C; The purpose of oil-like and nano-level solid lubricants is to improve the thickener distribution of the grease, increase the strength of the grease film and reduce the internal friction coefficient of the grease to stabilize the normal temperature noise of the bearing and improve low-temperature start-up.

Description

technical field [0001] The invention relates to the technical field of grease, in particular to an ultra-low temperature silent bearing grease and a preparation process thereof. Background technique [0002] Lubricating grease is a lubricant in semi-solid state. Thickener, base oil and additives together constitute the chemical formula of lubricating grease, which together with the manufacturing process conditions of lubricating grease are important factors that determine and affect the performance of lubricating grease. According to different working conditions, the formulation and manufacturing process of grease can be selected and adjusted in a targeted manner, and suitable grease products can be prepared. [0003] With the continuous progress of science and technology, the working conditions of modern bearings are more severe and complex, and the requirements for lubricating grease are also constantly increasing, mainly reflected in the long life, adapt to high and low t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/00C10N30/08C10N40/02C10N30/06C10N30/10C10N30/12C10N30/04
CPCC10M169/00C10M2205/0206C10M2207/1285C10M2201/062C10M2213/062C10M2215/064C10M2219/044
Inventor 沈浩殷若恺
Owner 金鹰润滑材料(金湖)有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com