阅读说明：本技术 一种耐高温防锈型全氟聚醚润滑油及其制备方法 (High-temperature-resistant antirust perfluoropolyether lubricating oil and preparation method thereof ) 是由 赵恒� 曹春兰 辛虎 于 2019-09-06 设计创作，主要内容包括：本发明中提供了一种耐高温防锈型全氟聚醚润滑油及其制备方法,以改善全氟聚醚润滑油的高温稳定性和防锈性能,进而减少设备锈蚀情况以及油品损耗。本发明提供的耐高温防锈型全氟聚醚润滑油,基于所述全氟聚醚润滑油的总质量,所述全氟聚醚润滑油包含质量百分比为80％-95％的基础油、质量百分比为1％-10％的耐高温稳定剂和质量百分比为1％-10％的防锈添加剂。(The invention provides a high-temperature-resistant antirust perfluoropolyether lubricating oil and a preparation method thereof, which are used for improving the high-temperature stability and the antirust performance of the perfluoropolyether lubricating oil and further reducing the equipment corrosion condition and the oil loss. The high-temperature-resistant antirust perfluoropolyether lubricating oil provided by the invention comprises, based on the total mass of the perfluoropolyether lubricating oil, 80-95% by mass of base oil, 1-10% by mass of high-temperature-resistant stabilizer and 1-10% by mass of antirust additive.)

1. The high-temperature-resistant antirust perfluoropolyether lubricating oil is characterized by comprising, based on the total mass of the perfluoropolyether lubricating oil, 80-95% by mass of base oil, 1-10% by mass of high-temperature-resistant stabilizer, and 1-10% by mass of antirust additive.

2. The high temperature resistant antirust perfluoropolyether lubricating oil according to claim 1, wherein the high temperature resistant stabilizer is selected from one or more of perfluoropolyether-modified arylamines, perfluoropolyether-modified imidazolines, perfluoropolyether-modified selenides, and perfluoropolyether-modified phenylphosphides.

3. The high-temperature-resistant antirust perfluoropolyether lubricating oil according to claim 2, wherein the high-temperature-resistant stabilizer is selected from perfluoropolyether-modified imidazolines and/or perfluoropolyether-modified aromatic amines; the perfluoropolyether-modified imidazolines are, for example, linear perfluoropolyethers having an imidazoline ring as a terminal group.

4. The high temperature resistant antirust perfluoropolyether lubricating oil according to claim 2 or 3, wherein the high temperature resistant stabilizer is one or more selected from perfluoropolyether triarylamine derivatives, perfluoropolyether-modified imidazolines, and perfluoropolyether-modified triphenyl sulfide phosphide.

5. The high temperature resistant antirust perfluoropolyether lubricating oil according to any one of claims 1 to 4, wherein the antirust additive is selected from one or more of polychlorotrifluoroethylene oils, perfluoropolyether-modified benzimidazole derivatives, perfluoropolyether-modified amides, and perfluoroalkyl compounds.

6. The high temperature resistant rust inhibitive perfluoropolyether lubricating oil according to claim 5, wherein the rust inhibitive additive is selected from the group consisting of polychlorotrifluoroethylene oil, perfluoropolyether-modified benzimidazole derivatives, perfluoropolyether-modified amides such as polyperfluoromethyl ethyl ether benzamide, in combination with one or more of them.

7. The high temperature resistant antirust perfluoropolyether lubricating oil according to any one of claims 1 to 6, wherein the base oil is Z-type perfluoropolyether having the following chemical formula:

wherein m and n are integers, m is more than or equal to 1, and n is more than or equal to 1; the weight average molecular weight thereof is 10000-20000g/mol, preferably 15000-20000 g/mol.

8. The method for preparing the high temperature resistant antirust perfluoropolyether lubricating oil according to any one of claims 1 to 7, comprising the steps of:

weighing the components according to the proportion, heating the base oil to 50-80 ℃, adding the antirust additive and the high-temperature resistant stabilizer, stirring and carrying out ultrasonic treatment, and filtering to obtain the high-temperature resistant antirust perfluoropolyether lubricating oil.

9. The method according to claim 8, wherein the ultrasound is carried out in a water bath at a temperature of 50-70 ℃ for a time of preferably 0.5-2 h; the stirring time is preferably 0.5 to 2 hours.

Technical Field

The invention belongs to the field of lubricating materials, and particularly relates to high-temperature-resistant antirust perfluoropolyether lubricating oil and a preparation method thereof.

Background

With the development of industrial science and technology, the production working conditions are increasingly complex, and the performance requirements on the lubricating oil are continuously improved. Under the working condition of high temperature, common synthetic oil, mineral oil and silicone oil are easy to be oxidized and deteriorated and can not meet the use requirements. Perfluoropolyether lubricating oil is widely applied in harsh working conditions due to excellent low volatility, chemical stability, corrosion resistance, high and low temperature characteristics and lubricating characteristics. However, in actual use, it was found that metal parts of the relevant equipment using the perfluoropolyether lubricating oil were rusted. Meanwhile, under the condition that certain metals such as Ti, Al and alloys thereof, metal oxides and metal fluorides exist, the degradation temperature of the perfluoropolyether lubricating oil can be reduced, so that the perfluoropolyether lubricating oil is unstable at high temperature, and the use of the perfluoropolyether lubricating oil under certain working conditions is seriously limited.

Disclosure of Invention

In view of the above, the invention provides a high-temperature-resistant antirust perfluoropolyether lubricating oil and a preparation method thereof, so as to improve the high-temperature stability and the antirust performance of the perfluoropolyether lubricating oil, and further reduce the equipment corrosion and oil loss.

In order to achieve the purpose, the invention provides the following technical scheme:

the invention provides a high-temperature-resistant antirust perfluoropolyether lubricating oil which comprises, based on the total mass of the perfluoropolyether lubricating oil, 80-95% by mass of base oil, 1-10% by mass (for example, 1%, 3%, 5%, 7%, 10%, and the like) of a high-temperature-resistant stabilizer, and 1-10% by mass (for example, 1%, 3%, 5%, 7%, 10%, and the like) of an antirust additive.

In some embodiments, the high temperature stabilizer is selected from the group consisting of one or more of perfluoropolyether modified aromatic amines, perfluoropolyether modified imidazolines, perfluoropolyether modified selenides, and perfluoropolyether modified phenylphosphides. The perfluoropolyether-modified imidazolines are, for example, linear perfluoropolyethers having an imidazoline ring as a terminal group. For example, the high temperature resistant stabilizer is selected from one or more of perfluoropolyether triarylamine derivatives, perfluoropolyether modified imidazolines, and perfluoropolyether modified triphenyl phosphorothionates. The high temperature resistant stabilizer used can be obtained from commercial sources, such as perfluoropolyether modified triphenyl phosphorothionate provided by Taicang chemical environmental protection chemical company Limited. The compound with the fluorine-containing ether structure is used as a high-temperature-resistant stabilizer, and is easily dissolved in perfluoropolyether oil, so that the stability effect is more fully exerted. In some embodiments, the perfluoropolyether-modified imidazolines are compounds of the following structural formula (I) in chinese patent application CN108728207A (CN 201810633975):

wherein Rf in the formula (I) is

Wherein m is more than or equal to 1, and n is more than or equal to 1; the molecular weight is 2500g/mol-3800 g/mol. This document CN 201810633975 is incorporated herein by reference in its entirety, and the compounds of formula (I), methods for their preparation are described in CN 201810633975.

In some embodiments, the rust inhibiting additive is selected from the group consisting of one or more of polychlorotrifluoroethylene oil, perfluoropolyether-modified benzimidazole derivatives, perfluoropolyether-modified amides, and perfluoroalkyl compounds. In some preferred embodiments, the rust inhibiting additive is selected from one or more of the group consisting of polychlorotrifluoroethylene oil, perfluoropolyether-modified benzimidazole derivatives, such as perfluoropolyether-modified diphenylimidazole, and perfluoropolyether-modified amides, such as polyperfluoromethyl ethyl ether benzamide. The rust inhibiting additives used are commercially available from, for example, polychlorotrifluoroethylene oils commercially available from, for example, the petrochemical lubricating oil company, Inc., such as perfluoropolyether-modified diphenylimidazoles available from the New materials technology, Inc., of Jinnfujun.

In some embodiments, in the high temperature resistant antirust perfluoropolyether lubricating oil of the present invention, the base oil is a Z-type perfluoropolyether having a chemical formula as follows:

wherein m and n in the formula a are integers, m is more than or equal to 1, and n is more than or equal to 1; the weight average molecular weight thereof is 10000-20000g/mol, preferably 15000-20000 g/mol.

In some embodiments, the lubricating oil obtained by using the Z-type perfluoropolyether as the base oil, the perfluoropolyether modified imidazoline and/or perfluoropolyether modified triphenyl phosphorothionate as the high-temperature stabilizer and the perfluoropolyether modified diphenyl imidazole and/or polychlorotrifluoroethylene oil as the antirust additive shows excellent high-temperature stability and antirust performance.

Preferably, imidazoline substances modified by perfluoropolyether and diphenyl imidazole modified by perfluoropolyether are respectively used as a high-temperature stabilizer and an antirust additive, or triphenyl phosphorothionate modified by perfluoropolyether and polychlorotrifluoroethylene oil are respectively used as a high-temperature stabilizer and an antirust additive, so that the high-temperature stability and the antirust performance of the perfluoropolyether lubricating oil can be obviously improved.

The invention also provides a preparation method of the high-temperature-resistant antirust perfluoropolyether lubricating oil, which is characterized by comprising the following steps:

weighing the components according to the proportion, heating the base oil to 50-80 ℃, adding the antirust additive and the high-temperature resistant stabilizer, stirring and carrying out ultrasonic treatment, and filtering to obtain the high-temperature resistant antirust perfluoropolyether lubricating oil. In some embodiments, the sonication is performed in a water bath, e.g., a water bath sonicator, at a temperature of 50 to 70 ℃, for a sonication time of, e.g., 0.5 to 2 hours; the stirring time is, for example, 0.5 to 2 hours.

The technical scheme provided by the invention has the following beneficial effects:

the high-temperature-resistant antirust perfluoropolyether lubricating oil can be applied to high-temperature working condition equipment, plays a good role in lubrication and protection, and has excellent high-temperature resistance and antirust performance. The perfluoropolyether lubricating oil can provide better high-temperature stability and antirust performance, and further reduce equipment corrosion and oil loss.

Detailed Description

In order to better understand the technical solution of the present invention, the following examples are further provided to illustrate the present invention, but the present invention is not limited to the following examples.

Perfluoropolyether oils (formula a, m 65, n 60): 140-145 base oil of Beijing division of China petrochemical lubricating oil Co., Ltd;

perfluoropolyether oil (chemical formula a, m is 60, n is 85) 145-155 base oil of Beijing division of China petrochemical lubricating oil, Inc.;

perfluoropolyether oils (formula a, m 90, n 35): 155-;

perfluoropolyether oils (formula a, m 80, n 95): 185-215 base oils of Beijing division of China petrochemical lubricating oil Co., Ltd;

perfluoropolyether oils (formula a, m 50, n 85): 135-145 base oil of Beijing division of China petrochemical lubricating oil Co., Ltd;

perfluoropolyether-modified diphenylimidazole: the purity of the perfluoropolyether derivative of the Jinan Fujun new material science and technology Limited company is 99 percent;

polychlorotrifluoroethylene oil: fluorine-chlorine equilibrium liquid (trade name) of Beijing division of China petrochemical lubricating oil Co., Ltd;

perfluoropolyether-modified imidazolines: self-made (prepared according to example 2 in patent document CN 201810633975);

perfluoropolyether-modified triphenyl phosphorothionate: the purity of the perfluoropolyether intermediate of Taicang chemical industry Co., Ltd is 99%.

Blank example

The perfluoropolyether lubricating oil (chemical formula a, m is 65, and n is 60) has no additive.