Check patentability & draft patents in minutes with Patsnap Eureka AI!

Long-life all-weather perfluoropolyether grease and preparation method and application thereof

A technology of perfluoropolyether and lubricating grease, used in lubricating compositions, petroleum industry and other directions, can solve the problems of hazard, can not meet the needs of use, not enough environmental protection, etc., achieve simple components, excellent high temperature resistance and low temperature The effect of performance and preparation process is simple

Inactive Publication Date: 2018-12-28
CHINA PETROLEUM & CHEM CORP
View PDF9 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The base oil of this lubricating grease is hydrocarbon oil, ester oil and silicone oil, the stability and service life need to be improved, and the thickener uses polyurea thickener, the production process is harmful and not environmentally friendly.
[0005] The existing lubricating grease with ordinary structure can no longer meet the needs of some special working conditions: the manufactured equipment has been tested before leaving the factory, and after adding high-quality lubricants, it can be used continuously for 10-20 or even 30 years. The machine is decommissioned or scrapped synchronously with the machine due to the expiration of service age

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
  • Long-life all-weather perfluoropolyether grease and preparation method and application thereof
  • Long-life all-weather perfluoropolyether grease and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Get 5g perfluoropolyether-modified phenylphosphine (purchased from Shanghai Hansi Chemical Co., Ltd.), 5g perfluoropolyether-modified phosphate (purchased from Shanghai Hansi Chemical Co., Ltd.) and join 800g perfluoropolyether (chemical formula As shown in formula (I), the perfluoropolyether has m=70, n=60; linear perfluoropolyether; provided by Sinopec Lubricating Oil Co., Ltd.), stirring and mixing at 50°C for 0.5h; Ultrasound at 50°C for 1 hour in an ultrasonic machine, continue ultrasonication for 1 hour, and then add 200 g of polytetrafluoroethylene thickener (average particle size 5um, molecular weight 1.2×10 4 , commercially available), stirred at 50° C. for 1 h, and ground on a three-roll mill for 1 h, and then vacuum-degassed the ground grease for packaging.

Embodiment 2

[0027] Get 15g polyperfluoromethyl ether benzamide antirust agent (purchased in Shanghai Hansi Chemical Co., Ltd.) and join 1.7kg perfluoropolyether (chemical formula such as formula (I), the m=90 of this perfluoropolyether, n= 80; linear perfluoropolyether), stirred and mixed at 60°C for 1h, and ultrasonicated at 60°C for 1.5h in a water bath ultrasonicator, then added polytetrafluoroethylene thickener (average particle size 2um, molecular weight about 1.2 ×10 4 g / mol) 220g, stirred and mixed at 70°C for 1h, and ground on a three-roll mill for 1.5h, and then vacuum degassed the ground grease for packaging.

Embodiment 3

[0029] Get 15g polychlorotrifluoroethylene oil (provided by Sinopec Lubricating Oil Co., Ltd.) and join 2kg perfluoropolyether (chemical formula such as formula (I), the m=70 of this perfluoropolyether, n=60; Fluoropolyether), stirred and mixed at 70°C for 2h, and ultrasonicated at 70°C for 0.5h in a water bath ultrasonicator, then added polytetrafluoroethylene thickener (average particle size 3um, molecular weight about 1.2×10 4 ) 300g, stirred and mixed at 70°C for 2h, and ground on a three-roll mill for 2h, then vacuum-degassed the ground grease and packaged.

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

PropertyMeasurementUnit
Molecular weightaaaaaaaaaa
Login to View More

Abstract

The invention provides long-life all-weather perfluoropolyether grease and a preparation method and an application thereof. The long-life all-weather perfluoropolyether grease comprises perfluoropolyether, a polytetrafluoroethylene thickener and an anti-rust additive, wherein, based on the total mass of the perfluoropolyether and the polytetrafluoroethylene thickener, the mass percentages of the perfluoropolyether and the polytetrafluoroethylene thickener are 60-90% and 10-40% respectively. The anti-rust additive is 0.02-1.2% of the total mass of the perfluoropolyether and the polytetrafluoroethylene thickener. A chemical formula of the perfluoropolyether is CF3-O-(CF2-CF2-O)m-(CF2-O)n-CF3, wherein m and n are respectively and independently selected from integers from 1 to 500, and the molecular weight is 10,000-20,000 g / mol; the average particle size of the polytetrafluoroethylene thickener is 1-10 Mum, and the molecular weight is 1*104-1*105 g / mol. The perfluoropolyether grease has good resistance to high temperature and low temperature and rust resistance and can achieve the effects of long-life all-weather lubrication and protection.

Description

technical field [0001] The invention relates to the field of lubricating materials, in particular to a long-life and all-weather perfluoropolyether lubricating grease and a preparation method and application thereof. Background technique [0002] Due to the more complex production conditions, the requirements for the performance of grease are also continuously increasing. It is necessary to ensure that under the conditions of large temperature difference, different speeds, and different loads, the surfaces that are in contact with each other can still maintain good lubricity and adhesion, and it is not easy to be lost or squeezed out. It has the advantages of simple sealing and supply equipment, radiation resistance and long service life. Most of the base oils used in long-life lubricating greases in the market at this stage are mineral oils, silicone oils, PAO and synthetic ester oils. These base oils have carbonization and gelation under high-temperature conditions, which...

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
IPC IPC(8): C10M169/02C10N50/10C10N30/08C10N30/12
CPCC10M169/02C10M2201/083C10M2213/02C10M2213/0606C10M2213/0626C10M2217/06C10M2225/00C10M2225/04C10N2030/08C10N2030/12C10N2050/10C10N2030/72C10N2020/04C10N2020/06C10N2010/02
Inventor 李豹曹春兰辛虎
Owner CHINA PETROLEUM & CHEM CORP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com