CN116286159B

CN116286159B - Rust-proof lubricating oil and preparation method thereof

Info

Publication number: CN116286159B
Application number: CN202310270619.3A
Authority: CN
Inventors: 熊利刚
Original assignee: Wuhan Kangningmei Biotechnology Co ltd
Current assignee: Wuhan Kangningmei Biotechnology Co ltd
Priority date: 2023-03-15
Filing date: 2023-03-15
Publication date: 2023-09-26
Anticipated expiration: 2043-03-15
Also published as: CN116286159A

Abstract

The application relates to an antirust lubricating oil and a preparation method thereof, and belongs to the technical field of lubricating oil, wherein the antirust lubricating oil comprises the following components in parts by weight: the antirust lubricating oil comprises the following components in parts by weight: 28-35 parts of modified tung oil, 6-9 parts of basic oil additive, 20-25 parts of castor oil polyoxyethylene ether, 5-8 parts of cellulose surfactant, 3-8 parts of polyethylene glycol and 120-140 parts of water. The application provides a vegetable oil-based medical instrument lubricating oil taking modified tung oil as lubricating oil base oil, which has excellent biocompatibility, good rust resistance and good lubricating property, fills up the blank that the existing medical instrument lubricating oil does not take tung oil as lubricating oil base oil, and provides a new thought for the application of tung oil in lubricating oil.

Description

Rust-proof lubricating oil and preparation method thereof

Technical Field

The application relates to the technical field of lubricating oil, in particular to an antirust lubricating oil and a preparation method thereof.

Background

Currently, medical lubricants on the market mainly comprise three types of water-soluble lubricants, silicone lubricants and lubricating oils. In the use process of surgical instruments, stainless steel instruments, dental tools, minimally invasive surgical instruments and other equipment, the lubricating oil can effectively prevent the medical instruments from rusting, and the service life of the medical instruments is prolonged. However, most of the prior medical appliance lubricating oil is mineral oil-based lubricating oil, and the mineral oil has the defects of poor biocompatibility, non-renewable property and the like.

The tung oil is a dry vegetable oil (iodine value 157-170) obtained by hot pressing tung seeds, and the main component of the tung oil contains alpha-eleostearic acid, linoleic acid, oleic acid and the like, and has the characteristics of heat resistance, acid resistance, alkali resistance, corrosion resistance, rust resistance and the like. At present, a small amount of tung oil has been applied to lubricating oil as a lubricating oil additive to improve the quality of lubricating oil. However, the tung oil has the problems of general wear resistance and poor oxidation stability, and the phenomenon of falling off and aging easily occurs after a protective film is formed on the surface of a medical instrument, so that the tung oil cannot be used as a base oil component in lubricating oil, and the application of the tung oil is greatly limited. Therefore, medical equipment lubricating oil using tung oil as lubricating oil base oil does not appear in the market at present.

Disclosure of Invention

The application aims to provide an antirust lubricating oil and a preparation method thereof, so as to solve the technical problem of poor biocompatibility of the existing mineral oil-based lubricating oil, and simultaneously fill the blank that the existing medical equipment lubricating oil does not use tung oil as lubricating oil base oil, and provide a new thought for application of the tung oil in the lubricating oil.

In a first aspect, an embodiment of the present application provides an anti-rust lubricating oil, which includes the following components in parts by weight:

28-35 parts of modified tung oil, 6-9 parts of basic oil additive, 20-25 parts of castor oil polyoxyethylene ether, 5-8 parts of cellulose surfactant, 3-8 parts of polyethylene glycol and 120-140 parts of water;

wherein the modified tung oil is obtained by epoxidation reaction of tung oil; the base oil additive comprises at least two of a first monoester, a second monoester, and a third monoester;

the first monoester is prepared from undecanoic acid and tri-tert-butyl methanol;

the second monoester is prepared from dodecanoic acid and tri-tert-butyl methanol;

the third monoester is prepared from tridecanoic acid and tri-tert-butyl methanol.

Further, the antirust lubricating oil comprises the following components in parts by weight:

31 parts of modified tung oil, 7 parts of basic oil additive, 20-25 parts of castor oil polyoxyethylene ether, 5-8 parts of cellulose surfactant, 3-8 parts of polyethylene glycol and 120-140 parts of water.

Further, the preparation method of the modified tung oil comprises the following steps:

stirring and mixing tung oil, a phosphotung-heteropoly acid catalyst, polyethylene glycol and an organic solvent to form a mixed reaction solution;

at the temperature of 60-70 ℃, hydrogen peroxide with the mass concentration of 30% is dripped into the mixed reaction liquid to be stirred and reacted for 2-5 hours, and the filtrate is obtained after the reaction is finished;

removing the water layer from the filtrate, and distilling at the pressure of 2-4Pa and the temperature of 80-85 ℃ to remove the organic solvent and low-boiling point substances to obtain modified tung oil;

wherein the weight ratio of the tung oil to the phosphotung heteropolyacid catalyst to the polyethylene glycol to the hydrogen peroxide is 1 (0.02-0.05), 1-3 and 0.5-1.2.

Further, the base oil additive is composed of the first monoester and the second monoester in the weight ratio of (26-30): 11-13.

Further, the base oil additive is composed of the first monoester and the third monoester in the weight ratio of (11-14): 31-33.

Further, the base oil additive is composed of the first monoester, the second monoester and the third monoester in a weight ratio of (12-15): (7-12): (20-25).

Further, the base oil additive is composed of the first monoester, the second monoester and the third monoester in a weight ratio of 13:10:23.

In a second aspect, an embodiment of the present application provides a method for preparing the rust inhibitive lubricating oil according to the first aspect, the method comprising:

stirring a basic oil additive, castor oil polyoxyethylene ether, a cellulose surfactant, polyethylene glycol and water to form an emulsion;

and adding the modified tung oil into the emulsion under the condition of continuous stirring, and stirring to obtain the antirust lubricating oil.

Further, the stirring temperature of the formed emulsion is 35-40 ℃, the stirring speed is 800-1000 rpm, and the stirring time is 10-30 min.

Further, the modified tung oil is added into the emulsion for stirring at the temperature of 45-50 ℃, the stirring speed of 2800-3500 rpm and the stirring time of 15-40 min.

Compared with the prior art, the scheme provided by the embodiment of the application has at least the following beneficial effects:

the embodiment of the application provides an antirust lubricating oil, which is particularly a vegetable oil-based medical instrument lubricating oil, takes modified tung oil obtained by epoxidation reaction of tung oil as lubricating oil base oil and is matched with a specific base oil additive with tri-tert-butyl at the tail end for use, thereby effectively overcoming the problems of easy falling, easy aging and the like caused by general wear resistance and poor oxidation stability of the tung oil; meanwhile, castor oil polyoxyethylene ether, cellulose surfactant and polyethylene glycol which are properly proportioned are used as auxiliary materials to obtain the antirust lubricating oil which has excellent biocompatibility, excellent antirust performance and excellent lubricating performance, so that the blank that tung oil is not used as lubricating oil base oil in the existing medical instrument lubricating oil is filled, and a new thought is provided for the application of the tung oil in the lubricating oil.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a flow chart of a preparation method of an anti-rust lubricating oil provided by an embodiment of the application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below. The specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention.

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The present application will be described in detail with reference to specific examples.

The general idea of the technical scheme provided by the embodiment of the application is as follows:

The embodiment of the application provides antirust lubricating oil, which comprises the following main components:

modified tung oil: the tung oil is subjected to epoxidation reaction, so that carbon-carbon double bonds in the tung oil are converted into epoxy groups, and the oxidation stability of the tung oil is improved; and the wear-resisting property and the like of the modified additive are further improved by matching the modified additive with a specific base oil additive with the tri-tert-butyl at the tail end.

Base oil additive: the basic oil additive at least comprises two monoesters, and each monoester is obtained by esterification reaction of any C11-C13 saturated straight-chain alkanoic acid and tri-tert-butyl methanol, so that the performances of the modified tung oil such as wear resistance and the like can be effectively improved.

Castor oil polyoxyethylene ether: has good emulsifying property and oil wettability, and is favorable for the emulsification and dissolution of modified tung oil.

Cellulose-based surfactant: is favorable for the emulsification and dissolution of the modified tung oil and improves the film forming effect of the modified tung oil.

Polyethylene glycol: has the characteristics of excellent lubricity, moisture retention, dispersibility, adhesiveness and the like, and is beneficial to enhancing the synergistic effect of modified tung oil and a specific basic oil additive with a tri-tert-butyl group at the tail end.

Therefore, the modified tung oil obtained by epoxidation reaction of the tung oil is used as the base oil of the lubricating oil and matched with the specific base oil additive with the tri-tert-butyl at the tail end, and the castor oil polyoxyethylene ether, the cellulose surfactant and the polyethylene glycol which are matched appropriately are matched to cooperate with each other, so that the rust-proof lubricating oil with excellent biocompatibility, good rust resistance and excellent lubricating performance is obtained by the combined action of the components, the problems of easy falling and easy aging and the like caused by the general wear resistance and poor oxidation stability of the tung oil are overcome, the blank that the tung oil is used as the base oil of the lubricating oil in the conventional medical instrument lubricating oil is filled, and a new thought is provided for the application of the tung oil in the lubricating oil.

In some embodiments, the castor oil polyoxyethylene ether may be selected from, for example, castor oil polyoxyethylene (20) ether, castor oil polyoxyethylene (30) ether, castor oil polyoxyethylene (40) ether, and the like.

In some embodiments, the cellulosic surfactant may be selected from hydroxypropyl cellulose, hydroxypropyl methylcellulose, hydroxyethyl methylcellulose, and the like.

In some embodiments, polyethylene glycol may be selected from polyethylene glycol 300, polyethylene glycol 400, and the like.

As an embodiment of the present example, the rust preventive lubricating oil comprises the following components in parts by weight:

According to the application, when 31 parts of modified tung oil and 7 parts of basic oil additive are used, the obtained antirust lubricating oil has good comprehensive performance.

As an implementation mode of the embodiment of the application, the preparation method of the modified tung oil comprises the following steps:

According to the application, the tung oil is subjected to an epoxidation reaction under the action of a phosphotungstic heteropolyacid catalyst and hydrogen peroxide, and polyethylene glycol is added as a surfactant, so that the whole reaction is performed mildly in a water-oil biphasic system; separating the water phase from the phosphotung heteropoly acid catalyst after the reaction is finished, and distilling at a specific temperature and pressure to remove the organic solvent and some low boiling point substances in the filtrate to obtain epoxidized modified tung oil;

In some embodiments, the polyethylene glycol may be selected from, for example, polyethylene glycol 300, polyethylene glycol 400, and the like.

In some embodiments, the organic solvent may be selected from, for example, 1, 2-dichloroethane, and the like.

As an implementation mode of the embodiment of the application, the basic oil additive consists of the first monoester and the second monoester in the weight ratio of (26-30) to (11-13).

In some embodiments, the weight ratio of the first monoester to the second monoester may be 26:11, 27:11, 28:11, 29:11, 30:11, 26:12, 27:12, 28:12, 29:12, 30:12, 26:13, 27:13, 28:13, 29:13, 30:13, etc.

As an implementation mode of the embodiment of the application, the basic oil additive consists of the first monoester and the third monoester in the weight ratio of (11-14): (31-33).

In some embodiments, the weight ratio of the first monoester to the third monoester may be 11:31, 12:31, 13:31, 14:31, 11:32, 12:32, 13:32, 14:32, 11:33, 12:33, 13:33, 14:33, etc.

As an implementation mode of the embodiment of the application, the basic oil additive consists of the first monoester, the second monoester and the third monoester in the weight ratio of (12-15): (7-12): (20-25).

In some embodiments, the weight ratio of the first monoester, the second monoester, and the third monoester is preferably 13:10:23.

In a second aspect, an embodiment of the present application provides a method for preparing the rust-preventive lubricating oil according to the first aspect, as shown in fig. 1, where the preparation method includes:

The embodiment of the application provides the preparation method of the rust-proof lubricating oil, which is simple to operate, does not need extra special equipment and is beneficial to industrial production. Meanwhile, the preparation method adopts a part or all of the technical scheme of the rust-proof lubricating oil in the first aspect, so that the preparation method has at least all the beneficial effects brought by the technical scheme of the embodiment, and the description is omitted herein.

As an implementation mode of the embodiment of the application, the stirring temperature for forming the emulsion is 35-40 ℃, the stirring speed is 800-1000 rpm, and the stirring time is 10-30 min.

In some embodiments, the emulsion is formed at a stirring temperature of 38℃and a stirring speed of 900rpm for a period of 20 minutes.

As an implementation mode of the embodiment of the application, the temperature of adding the modified tung oil into the emulsion for stirring is 45-50 ℃, the stirring speed is 2800-3500 rpm, and the stirring time is 15-40 min.

In some embodiments, the modified tung oil is added to the emulsion for a stirring period of 15 minutes at 47℃at 3200 rpm.

The features and capabilities of the present application are described in further detail below in connection with the examples.

Examples 1-10 provide a rust inhibitive lubricant comprising, in parts by weight (in g):

the preparation method of the modified tung oil comprises the following steps: mixing tung oil, a phosphotung acid catalyst, polyethylene glycol and 1, 1-dichloroethane under stirring to form a mixed reaction solution;

at 65 ℃, hydrogen peroxide with the mass concentration of 30% is dripped into the mixed reaction liquid to be stirred and reacted for 3.5 hours, and the filtrate is obtained after the reaction is finished;

removing the water layer from the filtrate, and distilling at 2-4Pa and 85 ℃ to remove organic solvent and low boiling point substances to obtain modified tung oil;

wherein the weight ratio of the tung oil to the phosphotung heteropolyacid catalyst to the polyethylene glycol 400 to the hydrogen peroxide is 1:0.04:2:1.1;

the base oil additive comprises at least two of a first monoester, a second monoester, and a third monoester;

The specific amounts of each component in examples 1-10 are shown in Table 1. Wherein the castor oil polyoxyethylene ether in the embodiment 1 is specifically castor oil polyoxyethylene (20) ether, and the cellulose surfactant is specifically hydroxypropyl cellulose; the castor oil polyoxyethylene ether in example 2 is specifically castor oil polyoxyethylene (40) ether, and the cellulose surfactant is specifically hydroxyethyl methylcellulose; the castor oil polyoxyethylene ether in examples 3 to 10 is specifically castor oil polyoxyethylene (30) ether, and the cellulose surfactant is specifically hydroxypropyl methylcellulose; the polyethylene glycol in examples 1-10 is specifically polyethylene glycol 400; the water in examples 1-10 is specifically deionized water.

TABLE 1

The preparation method of the rust preventive lubricating oil provided in the above examples 1 to 10 comprises the following steps:

stirring a basic oil additive, castor oil polyoxyethylene ether, a cellulose surfactant, polyethylene glycol and water to form an emulsion; wherein, the stirring temperature of the formed emulsion is 38 ℃, the stirring speed is 900rpm, and the stirring time is 20min;

adding modified tung oil into the emulsion under the condition of continuous stirring, and stirring to obtain antirust lubricating oil; wherein the temperature of adding the modified tung oil into the emulsion for stirring is 47 ℃, the stirring speed is 3200rpm, and the stirring time is 15min.

Comparative example 1

This example provides a rust preventive lubricating oil and a method for producing the same, which differs from example 10 only in that: the base oil additive is adjusted to 0g (i.e. no base oil additive is added); the rest steps and parameters are the same.

Comparative example 2

This example provides a rust preventive lubricating oil and a method for producing the same, which differs from example 10 only in that: the polyethylene glycol was adjusted to 0g (i.e., no polyethylene glycol added); the rest steps and parameters are the same.

Comparative example 3

This example provides a rust preventive lubricating oil and a method for producing the same, which differs from example 10 only in that: the dosage of the modified tung oil is adjusted to 50 parts (namely, the dosage of the modified tung oil is too much or the dosage of the basic oil additive is too little); the rest steps and parameters are the same.

Comparative example 4

This example provides a rust preventive lubricating oil and a method for producing the same, which differs from example 10 only in that: the preparation method of the modified tung oil comprises the following steps: mixing tung oil, a phosphotung acid catalyst, polyethylene glycol and 1, 1-dichloroethane under stirring to form a mixed reaction solution; at 65 ℃, hydrogen peroxide with the mass concentration of 30% is dripped into the mixed reaction liquid to be stirred and reacted for 3.5 hours, and the filtrate is obtained after the reaction is finished; removing a water layer from the filtrate, and heating to 85 ℃ under normal pressure to remove the organic solvent 1, 1-dichloroethane to obtain modified tung oil; the rest steps and parameters are the same.

Test case

In this example, the rust inhibitive lubricating oils obtained in examples 1 to 10 and comparative examples 1 to 4 were subjected to performance tests, and the test results are shown in Table 2 and Table 3.

The testing method comprises the following steps:

rust inhibitive performance test standard: GB/T2361 and SH/T0081.

Stability: medical surgical scissors are respectively soaked in the antirust lubricating oil obtained in the examples 1-10 and the comparative examples 1-4, taken out, dried for 20 minutes at room temperature, placed in the air for 2 weeks, and observed whether the phenomena of foaming, coating falling and the like exist.

TABLE 2

Note that: SH/T0692-2000 index requirements: warming (grade A) for not less than 240h; salt mist (grade A) is not less than 48h.

TABLE 3 Table 3

Sequence number	Detection result
		Example 1	No foaming and coating releaseFalling phenomenon
Example 2	No foaming and coating falling off
		Example 3	No foaming and coating falling off
Example 4	No foaming and coating falling off
		Example 5	No foaming and coating falling off
Example 6	No foaming and coating falling off
		Example 7	No foaming and coating falling off
Example 8	No foaming and coating falling phenomenon
		Example 9	No foaming and coating falling off
Example 10	No foaming and coating falling off
		Comparative example 1	Severe foaming and coating shedding
Comparative example 2	Cyanide with foaming and coating shedding
		Comparative example 3	With foaming and coating flaking
Comparative example 4	With foaming and coating flaking

In summary, the embodiment of the application provides an anti-rust lubricating oil, which is particularly a plant oil-based medical instrument lubricating oil, and uses modified tung oil obtained by epoxidation reaction of tung oil as lubricating oil base oil and matched with a specific base oil additive with tri-tert-butyl at the tail end for use, so that the problems of easy falling and easy aging caused by general wear resistance and poor oxidation stability of the tung oil are effectively solved; meanwhile, castor oil polyoxyethylene ether, cellulose surfactant and polyethylene glycol which are properly proportioned are used as auxiliary materials to obtain the antirust lubricating oil which has excellent biocompatibility, excellent antirust performance and excellent lubricating performance, so that the blank that tung oil is not used as lubricating oil base oil in the existing medical instrument lubricating oil is filled, and a new thought is provided for the application of the tung oil in the lubricating oil.

Various embodiments of the application may exist in a range of forms; it should be understood that the description in a range format is merely for convenience and brevity and should not be construed as a rigid limitation on the scope of the application; it is therefore to be understood that the range description has specifically disclosed all possible sub-ranges and individual values within that range. For example, it should be considered that a description of a range from 1 to 6 has specifically disclosed sub-ranges, such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., as well as single numbers within the range, such as 1,2, 3, 4, 5, and 6, wherever applicable. In addition, whenever a numerical range is referred to herein, it is meant to include any reference number (fractional or integer) within the indicated range.

In the present application, unless otherwise specified, terms such as "upper" and "lower" are used specifically to refer to the orientation of the drawing in the figures. In addition, in the description of the present specification, the terms "include", "comprising" and the like mean "including but not limited to". Relational terms such as "first" and "second", and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Herein, "and/or" describing an association relationship of an association object means that there may be three relationships, for example, a and/or B, may mean: a alone, a and B together, and B alone. Wherein A, B may be singular or plural. Herein, "at least one" means one or more, and "a plurality" means two or more. "at least one", "at least one" or the like refer to any combination of these items, including any combination of single item(s) or plural items(s). For example, "at least one (individual) of a, b, or c," or "at least one (individual) of a, b, and c," may each represent: a, b, c, a-b (i.e., a and b), a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple, respectively.

The foregoing is only a specific embodiment of the application to enable those skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The antirust lubricating oil is characterized by comprising the following components in parts by weight:

the third monoester is prepared from tridecanoic acid and tri-tert-butyl methanol;

the preparation method of the modified tung oil comprises the following steps:

2. The rust inhibitive lubricating oil of claim 1, wherein the rust inhibitive lubricating oil comprises the following components in parts by weight:

3. The rust inhibitive lubricating oil according to claim 1 or 2, wherein the base oil additive is composed of the first monoester and the second monoester in a weight ratio of (26 to 30): (11 to 13).

4. The rust inhibitive lubricating oil according to claim 1 or 2, wherein the base oil additive is composed of the first monoester and the third monoester in a weight ratio of (11 to 14): (31 to 33).

5. The rust inhibitive lubricating oil according to claim 1 or 2, wherein the base oil additive is composed of the first monoester, the second monoester and the third monoester in a weight ratio of (12 to 15): (7 to 12): (20 to 25).

6. The rust inhibitive lubricating oil of claim 1 or 2, wherein the base oil additive consists of the first monoester, the second monoester, and the third monoester in a weight ratio of 13:10:23.

7. The method for producing an anti-rust lubricating oil according to any one of claims 1 to 6, characterized in that the method comprises:

8. The method for producing a rust inhibitive lubricating oil according to claim 7, wherein the stirring temperature for forming the emulsion is 35 to 40 ℃, the stirring speed is 800 to 1000rpm, and the stirring time period is 10 to 30 minutes.

9. The method for producing a rust inhibitive lubricating oil according to claim 7, wherein the modified tung oil is added to the emulsion and stirred at a temperature of 45 to 50℃and a stirring speed of 2800 to 3500rpm for a stirring period of 15 to 40 minutes.