CN113862069A

CN113862069A - Boronized rare earth high-cleanness heat conduction oil complexing agent and preparation method and application thereof

Info

Publication number: CN113862069A
Application number: CN202111311815.8A
Authority: CN
Inventors: 张传春
Original assignee: Qingdao Sofron Chemical Co ltd
Current assignee: Qingdao Sofron Chemical Co ltd
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2021-12-31
Anticipated expiration: 2041-11-08
Also published as: CN113862069B

Abstract

The invention belongs to the technical field of heat conduction oil, relates to a heat conduction oil additive, and particularly relates to a high-cleanness heat conduction oil complexing agent containing boronized rare earth, a preparation method and an application thereof, wherein the complexing agent comprises the following raw materials in percentage by mass: 20-30 parts of nano boronized rare earth wear-resistant cleaning agent, 40-50 parts of high-temperature antioxidant, 10-30 parts of dispersing agent, 1-5 parts of metal deactivator and 5-10 parts of synthetic base oil. The nano boronized rare earth anti-wear cleaning agent comprises the following raw materials in percentage by mass: 8-12% of nano lanthanum borate, 28-32% of a polymer dispersant, 8-12% of a modifier, 8-12% of a surfactant and the balance of synthetic base oil. The high-cleanness heat conduction oil complexing agent for the boronized rare earth has high cleanliness, can effectively reduce coking of heat conduction oil at high temperature, prolongs the service life of the heat conduction oil, and improves the oil change period of the heat conduction oil.

Description

Boronized rare earth high-cleanness heat conduction oil complexing agent and preparation method and application thereof

Technical Field

The invention belongs to the technical field of heat conduction oil, relates to a heat conduction oil additive, and particularly relates to a high-cleanness heat conduction oil complexing agent containing rare earth boride and a preparation method and application thereof.

Background

The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.

The heat conducting oil is a special oil product with better thermal stability for indirectly transferring heat. Thermal oils are generally composed of a base oil and an additive (or complexing agent). According to the long-term production practice of the inventor, the heat conduction oil complexing agent in the current market is composed of a high molecular polymer antioxidant, the defect is that the high molecular polymer is easy to decompose and coke at high temperature, the heat conduction oil has poor heat conduction efficiency due to high working temperature of the heat conduction oil, even the ignition point is influenced, and an oil way filter screen is blocked in a heat conduction pipeline, so that the pressure is unstable, and the service life of the heat conduction oil is influenced; in the use process of the heat conducting oil, due to the fact that high temperature is accompanied with oxidation, oil oxidation can cause viscosity rise and unstable oil pressure, and certain corrosion can be caused to pipelines.

Disclosure of Invention

In order to solve the defects of the prior art, the invention aims to provide the boronized rare earth high-cleanness heat conduction oil complexing agent and the preparation method and application thereof.

In order to achieve the purpose, the technical scheme of the invention is as follows:

on one hand, the nano boronized rare earth anti-wear cleaning agent consists of the following raw materials in percentage by mass:

8-12% of nano lanthanum borate, 28-32% of a polymer dispersant, 8-12% of a modifier, 8-12% of a surfactant and the balance of synthetic base oil.

The heat conduction oil is conveyed into the heat conduction pipeline under the power conveying of the gear pump, certain requirements are met on the friction reducing and wear resisting properties of the heat conduction oil, and the nanometer lanthanum borate has remarkable friction reducing and wear resisting properties. The surfactant mainly serves as an additive for processing the surface, the modifier is a reagent for functionalizing particles, the surfactant is used for processing the surface of the nano lanthanum borate, the nano lanthanum borate is modified by the modifier, and the dispersant mainly serves to improve the dispersion uniformity of the modified small particles in a medium. The macromolecular dispersant is a macromolecular dispersant, a large number of groups which are easy to disperse in a macromolecular chain of the macromolecular dispersant, and modified small particles can be dispersed in synthetic base oil more uniformly. Practice proves that the nano boronized rare earth anti-wear cleaning agent provided by the invention has obvious cleaning performance when being used for a heat conduction oil complexing agent, thereby effectively reducing coking of heat conduction oil at high temperature, prolonging the service life of the heat conduction oil and improving the oil change period of the heat conduction oil.

On the other hand, the boronized rare earth high-cleanness heat conduction oil complexing agent is composed of the following raw materials in parts by mass:

20-30 parts of the nano boronized rare earth wear-resistant cleaning agent, 40-50 parts of high-temperature antioxidant, 10-30 parts of dispersant, 1-5 parts of metal deactivator and 5-10 parts of synthetic base oil.

According to the invention, the high-temperature antioxidant, the dispersing agent, the metal deactivator and the nano boronized rare earth anti-wear cleaning agent are compounded, so that the heat conduction oil complexing agent not only has remarkable cleaning property and coking resistance, but also has thermal oxidation stability, rust resistance, corrosion resistance, thermal conductivity and energy saving property, thereby prolonging the service life of the heat conduction oil and further improving the oil change period of the heat conduction oil.

And in the third aspect, the preparation method of the high-cleanness heat conduction oil complexing agent for the boronized rare earth comprises the steps of adding the nano boronized rare earth anti-wear detergent into the synthetic base oil for mixing, heating in the mixing process, sequentially adding the high-temperature antioxidant, the dispersing agent and the metal deactivator, continuously heating to raise the temperature by 5-15 ℃, and then continuously stirring to obtain the high-cleanness heat conduction oil complexing agent for the boronized rare earth.

The method can better mix the raw materials through the adjustment of temperature and the sequential addition of the raw materials, so that the raw materials generate better synergistic action, and the performance of the heat-conducting oil complexing agent is further improved.

In a fourth aspect, the boronized rare earth high-cleanness heat conduction oil complexing agent is applied to preparation of heat conduction oil.

In a fifth aspect, the heat conduction oil is composed of base oil and the high-cleanness heat conduction oil complexing agent containing the boronized rare earth, wherein the mass of the base oil is 98.0-99.5% of the total mass of the heat conduction oil.

Experiments prove that the effect of the invention can be realized by adding a small amount of the high-cleanness heat-conducting oil complexing agent of the rare earth boride.

The invention has the beneficial effects that:

the boron rare earth high-cleanness heat conduction oil complexing agent provided by the invention contains a nano boronized rare earth anti-wear cleaning agent, and has excellent cleanness, coking resistance, thermal oxidation stability, rust resistance and high heat conductivity after being matched with a high-temperature antioxidant, a dispersing agent and a metal deactivator, so that the energy is saved, and the service life of a heat conduction oil pump is prolonged.

Detailed Description

It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The invention provides a high-cleanness heat conduction oil complexing agent of boronized rare earth, and a preparation method and application thereof, aiming at solving the problem that the service life of heat conduction oil is short because the coking generated under the high-temperature condition cannot be effectively reduced by the existing heat conduction oil complexing agent.

The invention provides a typical implementation mode of a nano boronized rare earth anti-wear cleaning agent, which comprises the following raw materials in percentage by mass:

Practice proves that the nanometer boronized rare earth anti-wear cleaning agent can obviously improve the cleanness of the heat conduction oil complexing agent, thereby effectively reducing coking of the heat conduction oil at high temperature, prolonging the service life of the heat conduction oil and improving the oil change period of the heat conduction oil.

In some embodiments of this embodiment, the polymeric dispersant is polyisobutylene succinimide.

In some embodiments of this embodiment, the modifier is span-80.

In some embodiments of this embodiment, the surfactant is a silane coupling agent.

The preparation method comprises the following steps: adding nanometer lanthanum borate, a polymeric dispersant, a modifier and a surfactant into the synthetic base oil, uniformly stirring, heating to 50-70 ℃ for reaction, and filtering after reaction to obtain the product.

The invention provides a high-cleanness heat conduction oil complexing agent for boronized rare earth, which comprises the following raw materials in parts by mass:

In some embodiments of this embodiment, the high temperature antioxidant is an alkylated diphenylamine.

In some embodiments of this embodiment, the dispersant is polyisobutylene succinimide.

In some embodiments of this embodiment, the metal deactivator is a thiadiazole derivative.

The third embodiment of the invention provides a preparation method of the high-cleanness heat conduction oil complexing agent containing the boronized rare earth, which comprises the steps of adding the nano boronized rare earth anti-wear detergent into synthetic base oil for mixing, heating in the mixing process, sequentially adding the high-temperature antioxidant, the dispersing agent and the metal deactivator, continuously heating to increase the temperature by 5-15 ℃, and then continuously stirring to obtain the high-cleanness heat conduction oil complexing agent containing the boronized rare earth.

In some examples of this embodiment, the heating temperature is 55 to 65 ℃ before the high temperature antioxidant is added.

In some examples of this embodiment, the heating to a temperature of 60 to 70 ℃ is continued after the addition of the metal deactivator.

In some examples of this embodiment, the stirring is continued for 1.5 to 2.5 hours.

In some examples of this embodiment, filtration is performed after continued stirring.

The fourth embodiment of the invention provides an application of the high-cleanness heat conduction oil complexing agent for the rare earth boride in preparation of heat conduction oil.

The fifth embodiment of the invention provides heat conduction oil which is composed of base oil and the high-cleanness heat conduction oil complexing agent of the boronized rare earth, wherein the mass of the base oil is 98.0-99.5% of the total mass of the heat conduction oil.

In some embodiments of this embodiment, the base oil is an alkyl biphenyl base oil.

In order to make the technical solution of the present invention more clearly understood by those skilled in the art, the technical solution of the present invention will be described in detail below with reference to specific examples and comparative examples.

Example 1

1. Preparing a nano boronized rare earth anti-wear cleaning agent:

adding 10 parts by mass of nano lanthanum borate, 30 parts by mass of polyisobutylene succinimide, 10 parts by mass of span-80, 10 parts by mass of silane coupling agent and 40 parts by mass of synthetic base oil (five types of base oil synthetic ester) into a reaction kettle, heating to 60 ℃ in the stirring process, carrying out heat preservation reaction for 30 minutes, cooling and filtering after the reaction to obtain the nano boronized rare earth wear-resistant cleaning agent.

2. Preparing a boronized rare earth heat conduction oil complexing agent:

(1) 20 parts of nano boronized rare earth anti-wear cleaning agent and 5 parts of synthetic base oil (five types of base oil synthetic ester) are added into a blending tank, and the temperature is raised to 60 ℃ while stirring.

(2) And (2) adding 50 parts of alkylated diphenylamine into the blending tank in the step (1), stirring for 5 minutes, adding 22 parts of polyisobutylene succinimide, and continuing stirring for 5 minutes.

(3) And (3) adding 3 parts of thiadiazole derivative into the blending tank in the step (2), heating to 65 ℃, and stirring for 2 hours.

(4) And (4) cooling the material obtained in the step (3) and filtering to obtain the boronized rare earth heat-conducting oil complexing agent.

Example 2

The preparation of the nano boronized rare earth anti-wear cleaning agent is the same as that of the embodiment 1.

Preparing a boronized rare earth heat conduction oil complexing agent:

(1) adding 25 parts of nano boronized rare earth anti-wear cleaning agent and 7 parts of synthetic base oil (five-class base oil synthetic ester) into a blending tank, and heating to 55 ℃ while stirring.

(2) And (2) firstly adding 45 parts of alkylated diphenylamine into the blending tank in the step (1), stirring for 5 minutes, then adding 20 parts of polyisobutylene succinimide, and continuing to stir for 5 minutes.

Example 3

Preparing a boronized rare earth heat conduction oil complexing agent:

(1) adding 28 parts of nano boronized rare earth anti-wear cleaning agent and 10 parts of synthetic base oil (five types of base oil synthetic ester) into a blending tank, and heating to 65 ℃ while stirring.

(2) And (2) adding 40 parts of alkylated diphenylamine into the blending tank in the step (1), stirring for 5 minutes, adding 18 parts of polyisobutylene succinimide, and continuing stirring for 5 minutes.

(3) And (3) adding 4 parts of thiadiazole derivative into the blending tank in the step (2), heating to 70 ℃, and stirring for 2 hours.

Example 4

Preparing a boronized rare earth heat conduction oil complexing agent:

(1) 26 parts of nano boronized rare earth anti-wear cleaning agent and 10 parts of synthetic base oil (five types of base oil synthetic ester) are added into a blending tank, and the temperature is raised to 55 ℃ while stirring.

(2) And (2) adding 40 parts of alkylated diphenylamine into the blending tank in the step (1), stirring for 5 minutes, adding 20 parts of polyisobutylene succinimide, and continuing stirring for 5 minutes.

Example 5

Preparing a boronized rare earth heat conduction oil complexing agent:

(1) adding 25 parts of nano boronized rare earth anti-wear cleaning agent and 5 parts of synthetic base oil (five types of base oil synthetic ester) into a blending tank, and heating to 60 ℃ while stirring.

(2) And (2) simultaneously adding 40 parts of alkylated diphenylamine, 25 parts of polyisobutylene succinimide and 5 parts of thiadiazole derivative into the blending tank in the step (1), firstly keeping the temperature, stirring for 10 minutes, then heating to 65 ℃, and stirring for 2 hours.

(3) And (3) cooling the material obtained in the step (2) and filtering to obtain the boronized rare earth heat-conducting oil complexing agent.

Example 6

Preparing a boronized rare earth heat conduction oil complexing agent:

(1) adding 24 parts of nano boronized rare earth anti-wear cleaning agent and 5 parts of synthetic base oil (five types of base oil synthetic ester) into a blending tank, and heating to 60 ℃ while stirring.

(2) And (2) adding 48 parts of alkylated diphenylamine into the blending tank in the step (1), stirring for 5 minutes, adding 22 parts of polyisobutylene succinimide, continuing stirring for 5 minutes, adding 1 part of thiadiazole derivative, and stirring for 2 hours.

Example 7

This example compares to example 1 with the difference that the alkylated diphenylamine was replaced with a phenolic antioxidant.

Example 8

This example compares to example 1 with the difference that polyisobutylene succinimide is replaced with polyisobutylene succinic anhydride.

Example 9

This example is compared with example 1, except that the thiadiazole derivative was replaced with a benzotriazole derivative.

Experimental example 1

1.5 parts by mass of the boronized rare earth thermal oil complexing agent of example 1 and 98.5 parts by mass of alkyl biphenyl base oil are uniformly mixed to obtain thermal oil.

Experimental example 2

1.5 parts by mass of the boronized rare earth thermal oil complexing agent of example 5 and 98.5 parts by mass of alkyl biphenyl base oil are uniformly mixed to obtain thermal oil.

Experimental example 3

1.5 parts by mass of the boronized rare earth thermal oil complexing agent of example 6 and 98.5 parts by mass of alkyl biphenyl base oil are uniformly mixed to obtain thermal oil.

Experimental example 4

1.5 parts by mass of the boronized rare earth thermal oil complexing agent of example 7 and 98.5 parts by mass of alkyl biphenyl base oil are uniformly mixed to obtain thermal oil.

Experimental example 5

1.5 parts by mass of the boronized rare earth thermal oil complexing agent of example 8 and 98.5 parts by mass of alkyl biphenyl base oil are uniformly mixed to obtain thermal oil.

Experimental example 6

1.5 parts by mass of the boronized rare earth thermal oil complexing agent of example 9 and 98.5 parts by mass of alkyl biphenyl base oil are uniformly mixed to obtain thermal oil.

Comparative example 1

1.5 parts by mass of a heat conduction oil complexing agent 1 of a certain domestic company and 98.5 parts by mass of alkyl biphenyl base oil are uniformly mixed to obtain the heat conduction oil.

Comparative example 2

1.5 parts by mass of a certain domestic company of heat conduction oil complexing agent 2 and 98.5 parts by mass of alkyl biphenyl base oil are uniformly mixed to obtain the heat conduction oil.

Comparative example 3

1.5 parts by mass of a heat conduction oil complexing agent 3 of a certain foreign company and 98.5 parts by mass of alkyl biphenyl base oil are uniformly mixed to obtain heat conduction oil.

The heat conduction oil complexing agents adopted in the comparative examples 1-3 represent three types which are commercially available and have optimal performance, and the three types of heat conduction oil complexing agents represent the defects of the existing heat conduction oil complexing agents.

The performance test results of the heat transfer oil prepared in the experimental examples 1 to 6 and the comparative examples 1 to 3 are shown in table 1.

Table 1 Performance test results of the heat transfer oils prepared in Experimental examples 1-6 and comparative examples 1-3

Note: a. thermal oxidation stability test method, according to test standard GB/T23800;

b. oxidation stability (test by the rotary oxygen bomb method) according to test standard SH/T0193;

c. the copper sheet corrosion test method comprises the following steps: according to the GB/T5096 petroleum product copper sheet corrosion method;

d. the method for testing the content of the residual carbon comprises the following steps: according to standard GB/T268;

e. the cleanliness testing method comprises the following steps: according to SH/T0300.

Compared with the comparative examples 1 to 3, the boron rare earth high-cleanness heat conduction oil complexing agent disclosed by the invention has the advantages of excellent cleanness, cleaning property, rust prevention, corrosion prevention, thermal stability and thermal oxidation stability, and not only can effectively prolong the service life of heat conduction oil, but also can prolong the service life of a heat conduction oil pump.

Compared with the examples 2-6, the heat conduction oil complexing agent disclosed by the invention has a better effect on the heat conduction oil complexing agent formed by matching the nano boronized rare earth anti-wear cleaning agent with alkylated diphenylamine, polyisobutylene succinimide and thiadiazole derivatives. Particularly, the effect is more excellent after the temperature and the adding sequence of the raw materials are adjusted.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The nanometer boronized rare earth anti-wear cleaning agent is characterized by comprising the following raw materials in percentage by mass:

2. The nano boronized rare earth anti-wear cleaning agent according to claim 1, characterized in that the polymeric dispersant is polyisobutylene succinimide;

or, the modifier is span-80;

or, the surfactant is a silane coupling agent.

3. The high-cleanness heat conduction oil complexing agent for the boronized rare earth is characterized by comprising the following raw materials in parts by mass:

20-30 parts of nano boronized rare earth anti-wear cleaning agent, 40-50 parts of high-temperature antioxidant, 10-30 parts of dispersant, 1-5 parts of metal deactivator and 5-10 parts of synthetic base oil according to claim 1 or 2.

4. The boronized rare earth high-cleaning conduction oil complex agent as set forth in claim 3, characterized in that the high-temperature antioxidant is alkylated diphenylamine;

or, the dispersant is polyisobutylene succinimide;

or, the metal deactivator is a thiadiazole derivative.

5. A preparation method of the boronized rare earth high-cleanness heat conduction oil complexing agent as claimed in claim 3 or 4, which is characterized in that the nano boronized rare earth anti-wear detergent is added into synthetic base oil to be mixed, heating is carried out in the mixing process, then a high-temperature antioxidant, a dispersing agent and a metal deactivator are sequentially added, the heating is continued to increase the temperature by 5-15 ℃, and then the stirring is continued to obtain the boronized rare earth high-cleanness heat conduction oil complexing agent.

6. The preparation method of the boronized rare earth high-cleanness heat conduction oil complexing agent according to claim 5, characterized in that the heating temperature is 55-65 ℃ before the high-temperature antioxidant is added;

or, adding the metal deactivator and then continuously heating to 60-70 ℃.

7. The preparation method of the boronized rare earth high-cleanness heat conduction oil complexing agent according to claim 5, characterized in that the continuous stirring time is 1.5-2.5 h;

or, the mixture is further stirred and then filtered.

8. Use of the boronized rare earth high-cleaning thermal oil complexing agent according to claim 3 or 4 in preparation of thermal oil.

9. A heat conduction oil is characterized by consisting of base oil and the boronized rare earth high-cleaning heat conduction oil complexing agent of claim 3 or 4, wherein the mass of the base oil is 98.0-99.5% of the total mass of the heat conduction oil.

10. A thermal oil according to claim 9, wherein the base oil is an alkyl biphenyl base oil.