阅读说明：本技术 一种用于发动机油的新型减摩剂及其应用 (Novel friction reducer for engine oil and application thereof ) 是由 许金山 雷凌 陈佳琪 陈钊锋 李程 于 2019-10-10 设计创作，主要内容包括：本发明涉及发动机油技术领域,具体涉及一种用于发动机油的新型减摩剂及其应用。本发明提供的新型减摩剂包括如下重量份的组分：二元钼减摩剂30份～50份,三元钼减摩剂10份～25份,无灰型有机减摩剂30份～50份。本发明的新型减摩剂可直接添加至有节能需求的发动机油中,减摩剂的添加量按重量百分比计为0.5％～2％。本发明的新型减摩剂具有优异的减摩性能,能够以较少的添加量有效降低发动机油的摩擦系数,提高油品的节能性,同时对油品的高温清净性等其它性能不会产生负面影响。(The invention relates to the technical field of engine oil, in particular to a novel antifriction agent for engine oil and application thereof. The novel friction reducer provided by the invention comprises the following components in parts by weight: 30 to 50 portions of binary molybdenum antifriction agent, 10 to 25 portions of ternary molybdenum antifriction agent and 30 to 50 portions of ashless organic antifriction agent. The novel antifriction agent can be directly added into engine oil with energy-saving requirement, and the addition amount of the antifriction agent is 0.5-2% by weight percent. The novel antifriction agent has excellent antifriction performance, can effectively reduce the friction coefficient of engine oil by a small addition amount, improves the energy-saving performance of oil products, and does not have negative effects on other performances of the oil products such as high-temperature detergency and the like.)

1. A novel friction reducer for engine oil is characterized by comprising the following components in parts by weight: 30 to 50 portions of binary molybdenum antifriction agent, 10 to 25 portions of ternary molybdenum antifriction agent and 30 to 50 portions of ashless organic antifriction agent.

2. The novel friction reducer according to claim 1, wherein the mass ratio of the binary molybdenum friction reducer to the ternary molybdenum friction reducer is (1-5): 1; preferably (1-3): 1.

3. a novel friction reducer according to claim 1 or 2, characterized in that the binary molybdenum friction reducer comprises binary molybdenum MoDTC; the structural general formula of the binary molybdenum MoDTC is as follows:

wherein R1-R4 are respectively one selected from linear or branched alkyl or alkenyl of C4-C18;

preferably, R1 is a C8 linear or branched alkyl or alkenyl group; and/or R2 is a C8 linear or branched alkyl or alkenyl group; and/or R3 is a C13 linear or branched alkyl or alkenyl group; and/or R4 is a C13 linear or branched alkyl or alkenyl group.

4. A novel friction reducer according to any of claims 1 to 3, wherein the binary molybdenum friction reducer is one or more selected from S525, POUPC1002, TDZ 4013.

5. A novel friction reducer according to any of claims 1 to 4, characterized in that the ternary molybdenum friction reducer comprises ternary molybdenum MoDTC; the structural general formula of the ternary molybdenum MoDTC is as follows:

wherein R is one selected from C4-C9 alkyl; preferably a C4 alkyl group.

6. A novel friction reducer as claimed in any one of claims 1 to 5 wherein the ternary molybdenum friction reducer is C9455B.

7. A novel friction reducer according to any one of claims 1 to 6, wherein the ashless type organic friction reducer comprises an organic substance having a friction reducing function; the organic matter with the friction reducing function contains C, H, O elements and does not contain S, P elements;

preferably, the ashless organic friction reducer is one or more selected from the group consisting of Perfad 3000, Perfad 3050, Perfad 3057, Amadol 511, DuomeentoTDO, INF C9440, INF C9433.

8. A novel friction reducer as claimed in any one of claims 1 to 7 comprising the following components in parts by weight: s52535-45 parts, C9455B 15-25 parts, and Perfad 305735-45 parts.

9. Use of a novel friction reducer as claimed in any one of claims 1 to 8 in the preparation of an engine oil.

10. An engine oil characterized by containing the novel friction reducer according to any one of claims 1 to 8;

preferably, in the engine oil, the mass percentage of the novel friction reducer is 0.5-2%.

Technical Field

The invention relates to the technical field of engine oil, in particular to a novel antifriction agent for engine oil and application thereof.

Background

In recent years, global increases in oil prices and increasing scarcity of oil resources have placed increasingly stringent demands on automotive fuel economy. Meanwhile, the fuel economy evaluation standards for engine oils are also becoming more stringent. Therefore, increasingly higher demands are placed on the fuel economy of engine oils. The friction process is actually an energy consumption process, and energy consumption caused by useless friction is one of the main factors influencing fuel economy. Therefore, reducing the friction of the engine is an effective means for improving fuel economy.

Improving fuel economy with energy-efficient engine oils that reduce friction is currently one of the most important areas of engine oil development. The friction reducer can be adsorbed on the metal friction surface through physical or chemical reaction, so that a protective film is formed on the metal surface, the friction factor is reduced, and the friction reducing and wear resisting effects are achieved. At present, many automobile OEM manufacturers put higher requirements on other performances such as high-temperature detergency of oil products and the like while putting higher requirements on energy conservation of engine oil. Although more components with the friction reducing function are developed, the increasingly rigorous energy-saving requirements of automobile OEM manufacturers cannot be met by simply using one friction reducer, and some friction reducers can generate negative effects on other properties such as high-temperature detergency of oil products while improving the energy-saving property of the oil products, so that friction reducer products with better energy-saving effect and no obvious negative effects on other properties of the oil products need to be developed.

Disclosure of Invention

In order to solve the technical problems in the prior art, the invention aims to provide a novel friction reducer with excellent friction reducing and wear resisting properties, which can effectively reduce the friction coefficient of engine oil with less addition amount and simultaneously has no negative influence on other properties of oil products.

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

in the process of researching and developing the antifriction agent for the engine oil, the invention discovers that although the organic molybdenum antifriction agent has better antifriction performance, the increasingly rigorous energy-saving requirements of automobile OEM manufacturers cannot be met by only using one antifriction agent, and the sulfur element and the nitrogen-containing group in the organic molybdenum antifriction agent can be easily and independently reacted with other components in the engine oil to influence the high-temperature detergency of the engine oil. According to the invention, a large number of researches and practices find that the problems can be well solved by compounding the binary molybdenum MoDTC and the ternary MoDTC and adding the ashless organic friction reducer on the basis, the novel friction reducer obtained by compounding the binary molybdenum MoDTC and the ternary MoDTC has excellent friction reducing performance, the friction coefficient of the engine oil can be effectively reduced by a small amount of addition, and the adverse effects on other performances such as high-temperature detergency and the like of the engine oil are ensured.

Specifically, the technical scheme of the invention is as follows:

the invention provides a novel antifriction agent for engine oil, which comprises the following components in parts by weight: 30 to 50 portions of binary molybdenum antifriction agent, 10 to 25 portions of ternary molybdenum antifriction agent and 30 to 50 portions of ashless organic antifriction agent.

Better antifriction performance can be obtained by controlling the mass ratio of the binary molybdenum antifriction agent to the ternary molybdenum antifriction agent in the novel antifriction agent.

Preferably, in the novel friction reducer, the mass ratio of the binary molybdenum friction reducer to the ternary molybdenum friction reducer is (1-5): 1. more preferably (1-3): 1.

in particular, the binary molybdenum friction reducer comprises binary molybdenum MoDTC; the structural general formula of the binary molybdenum MoDTC is as follows:

wherein R1-R4 are respectively one selected from linear or branched alkyl or alkenyl of C4-C18.

Preferably, R1 is a C8 linear or branched alkyl or alkenyl group. R2 is a C8 linear or branched alkyl or alkenyl group. R3 is a C13 linear or branched alkyl or alkenyl group. R4 is a C13 linear or branched alkyl or alkenyl group.

In the binary molybdenum MoDTC with the structure, binary molybdenum friction reducers S525, POUPC1002 and TDZ 4013 are selected to better promote the improvement of friction reducing performance through compounding. Thus, the binary molybdenum friction reducer is more preferably one or more selected from S525, POUPC1002, TDZ 4013.

Specifically, the ternary molybdenum friction reducer comprises ternary molybdenum MoDTC; the structural general formula of the ternary molybdenum MoDTC is as follows:

wherein R is one selected from C4-C9 alkyl; preferably a C4 alkyl group.

In the ternary molybdenum MoDTC with the structure, the ternary molybdenum friction reducer C9455B is selected to better promote the improvement of the friction reducing performance through the compounding. Thus, the ternary molybdenum friction reducer is preferably C9455B.

Specifically, the ashless organic friction reducer comprises an organic substance having a friction reducing function; the organic material having a friction reducing function contains C, H, O elements and does not contain S, P elements.

Preferably, the ashless organic friction reducer is one or more selected from the group consisting of Perfad 3000, Perfad 3050, Perfad 3057, Amadol 511, DuomeentoTDO, INF C9440, INF C9433.

Experiments prove that the most preferable friction reducer compounding mode of the invention is as follows: the binary molybdenum friction reducer is S525, the ternary molybdenum friction reducer is C9455B, and the ashless organic friction reducer is Perfad 3057. The novel friction reducer obtained by compounding the three friction reducers has more excellent friction reducing performance, can effectively reduce the friction coefficient of the engine oil by relatively minimum addition amount, and simultaneously furthest reduces the adverse effect on other performances of the engine oil.

As a preferable scheme of the invention, the novel friction reducer comprises the following components in parts by weight: s52535-45 parts, C9455B 15-25 parts, and Perfad 305735-45 parts.

The invention further provides the use of the novel friction reducer in the preparation of engine oil.

On the basis, the invention also provides engine oil which contains the novel friction reducer.

Preferably, in the engine oil, the mass percentage of the novel friction reducer is 0.5-2%. More preferably 1% to 2%.

The invention has the beneficial effects that:

the novel antifriction agent for engine oil provided by the invention has excellent antifriction performance, can effectively reduce the friction coefficient between friction parts, plays an anti-wear role and achieves the purpose of energy conservation; the friction coefficient of the engine oil can be effectively reduced by a small addition amount, the energy-saving property of the oil product is improved, and meanwhile, negative effects on other properties such as high-temperature cleaning property of the oil product and the like can not be generated.

Drawings

FIG. 1 shows the results of testing the antifriction and energy-saving properties of engine oil using an SRV friction and wear tester in Experimental example 2 of the present invention; wherein A is the test result for the engine oil of example 4; b is the test result of the engine oil of comparative example 2.

FIG. 2 is a result of testing the anti-friction and energy-saving performance of engine oil using a High Frequency Reciprocating Rig (HFRR) tester in Experimental example 2 of the present invention; wherein A is the test result for the engine oil of example 4; b is the test result of the engine oil of comparative example 2.

FIG. 3 is a result of testing the anti-wear performance of engine oil using an SRV frictional wear tester in Experimental example 3 of the present invention; wherein A is the test result for the engine oil of example 4; b is the test result of the engine oil of comparative example 2.

FIG. 4 is a graph showing the results of measuring the anti-wear performance of engine oil using the four-ball wear scar diameter in Experimental example 3 of the present invention; wherein A is the test result for the engine oil of example 4; b is the test result of the engine oil of comparative example 2.

FIG. 5 is a graph showing the results of testing the detergency at a high temperature at the start of engine by the crankcase simulation test method (QZX method) in Experimental example 4 of the present invention; wherein A is the test result for the engine oil of example 4; b is the test result of the engine oil of comparative example 2; c is the test result of the engine oil of comparative example 3.

Detailed Description

Preferred embodiments of the present invention will be described in detail with reference to the following examples. It is to be understood that the following examples are given for illustrative purposes only and are not intended to limit the scope of the present invention. Various modifications and alterations of this invention will become apparent to those skilled in the art without departing from the spirit and scope of this invention.

The experimental procedures used in the following examples are all conventional procedures unless otherwise specified.

Materials, reagents and the like used in the following examples are commercially available unless otherwise specified, wherein S525 is available from ADEKA; C9455B was obtained from Union of Runki; perfad 3057 was purchased from Croda. The commercially available SN/GF-50W-20 engine oil used in all of the following examples and comparative examples was the same SN/GF-50W-20 engine oil, which was a J700F SN/GF-50W-20 engine oil available from China petrochemical lubricating oil, Inc.

The friction reducers in all the following examples and comparative examples were prepared as follows: mixing the components according to the mass ratio, and stirring for 2 hours at the temperature of 60-65 ℃ to mix uniformly.

Example 1

The embodiment provides a novel friction reducer, which consists of the following components in percentage by weight:

S525 42.9％；

C9455B 21.4％；

Perfad 3057 35.7％。

example 2

The embodiment provides a novel friction reducer, which consists of the following components in percentage by weight:

S525 35.7％；

C9455B 21.4％；

Perfad 3057 42.9％。

example 3

The embodiment provides a novel friction reducer, which consists of the following components in percentage by weight:

S525 45％；

C9455B 15％；

Perfad 3057 40％。

example 4

The embodiment provides engine oil which comprises the following components in percentage by weight: 1.4% of the novel friction reducer of example 1, and 98.6% of a commercially available SN/GF-50W-20 engine oil.

Example 5

The embodiment provides engine oil which comprises the following components in percentage by weight: 2% of the novel friction reducer of example 2, and 98% of a commercially available SN/GF-50W-20 engine oil.

Example 6

The embodiment provides engine oil which comprises the following components in percentage by weight: 1.5% of the novel friction reducer of example 3, and 98.5% of a commercially available SN/GF-50W-20 engine oil.

Comparative example 1

The comparative example provides an antifriction agent which comprises the following components in percentage by weight:

S525 100％

comparative example 2

The comparative example provides engine oil which comprises the following components in percentage by weight:

100% of commercially available SN/GF-50W-20 engine oil.

Comparative example 3

The comparative example provides engine oil which comprises the following components in percentage by weight:

0.75% of the friction reducer of comparative example 1, and 99.25% of a commercially available SN/GF-50W-20 engine oil.

Experimental example 1 elemental analysis of Engine oil

The engine oils of the above examples and comparative examples were analyzed for element content, respectively, and the results are shown in table 1.

TABLE 1 elemental analysis of engine oils

Element content	Example 4	Comparative example 2	Comparative example 3	Analytical method
					Phosphorus content (mass fraction)%	0.675	0.680	0.689	GB/T 17476
Molybdenum content (mass fraction)%	0.076	0.004	0.077	GB/T 17476

As can be seen from Table 1, the novel friction reducer of example 1 added to an engine oil product had no effect on the phosphorus content (the presence of phosphorus adversely affects the three-way catalyst) while increasing the energy saving effect of the oil (the molybdenum content increased).

Experimental example 2 antifriction Properties of Engine oil

The friction reducing and energy saving performance of the engine oils of the above examples and comparative examples was verified using an SRV friction wear tester and a high frequency reciprocating (HFRR) tester under the following test conditions:

the SRV test conditions were:

temperature: 80 ℃; loading: 200N; frequency: 50 Hz; amplitude: 1.0 mm; the operation period is as follows: and 2 h.

The HFRR test conditions were:

temperature: 80 ℃; loading: 400 g; frequency: 50 Hz; amplitude: 1.0 mm; the operation period is as follows: and (5) 90 min.

TABLE 2 analysis of antifriction and Economy Performance of Engine oils

The difference between SRV and HFRR is that SRV is more severe in test conditions, mainly simulating boundary lubrication regime, and HFRR mainly simulates mixed lubrication regime. The test results are shown in table 2 and fig. 1(SRV), fig. 2(HFRR), and indicate that the friction coefficient of the engine oil of example 4 is reduced by 66.9% in the SRV test as compared with the engine oil of comparative example 2, and it can be seen that the friction reducing performance of the engine oil of example 4 is significantly better than that of the engine oil of comparative example 2; in the HFRR test, the friction coefficient of the engine oil of example 4 was reduced by 25% as compared with the engine oil of comparative example 2, and it was found that the friction reducing performance of the engine oil of example 4 was significantly better than that of the engine oil of comparative example 2.

The friction reducing and energy saving properties of the engine oils of examples 5 and 6 were analyzed by the same test method as described above, and the results showed that the friction reducing and energy saving properties of the engine oils of examples 5 and 6 were equivalent to those of the engine oil of example 4.

The above results demonstrate that the novel friction reducer for engine oil provided in embodiments 1 to 3 of the present invention has a very excellent energy saving effect.

Experimental example 3 anti-wear Properties of Engine oil

The engine oils of the above examples and comparative examples were tested for anti-wear performance using an SRV friction wear tester and four-ball wear diameter under the following test conditions:

the SRV test conditions were as above.

The four-ball grinding spot diameter test conditions are as follows:

temperature: 80 ℃; rotating speed: 1500 r/min; loading: 392N; the operation period is as follows: and (5) 60 min.

TABLE 3 antiwear Properties of Engine oils

The test results are shown in table 3 and fig. 3(SRV), fig. 4 (four ball wear diameter test), and the results show that the wear-resistant performance of the engine oil of example 4 is significantly better than that of the engine oil of comparative example 2, as the wear-resistant diameter of the engine oil of example 4 is reduced by 25.9% in the SRV test as compared with that of comparative example 2; in the four-ball test, the wear scar diameter of the engine oil of example 4 was reduced by 15.8% as compared to the engine oil of comparative example 2, and it can be seen that the anti-wear performance of the engine oil of example 4 was significantly better than that of the engine oil of comparative example 2.

The engine oils of examples 5 and 6 were analyzed for anti-wear properties using the same test method as described above, and the results showed that the engine oils of examples 5 and 6 had anti-wear properties equivalent to those of the engine oil of example 4.

The above results show that the novel friction reducers provided in embodiments 1 to 3 of the present invention improve the wear resistance of oil products to a certain extent while saving energy.

Experimental example 4 high-temperature detergency of Engine oil

The engine oils of the above examples and comparative examples were verified for detergency at high temperature by the crankcase simulation test method (QZX method).

The test conditions were:

oil temperature: 150 ℃; the plate temperature is 310 ℃; the operation period is as follows: 2 h; and (4) intermittent.

TABLE 4 high temperature detergency performance of Engine oils

The results are shown in table 4 and fig. 5, and show that the engine oil of comparative example 3, in which only the binary molybdenum MoDTC anti-friction agent was added, had a significantly negative effect on the high-temperature detergency of the engine oil when the same molybdenum content was achieved as the engine oil of example 4 (as shown in table 1), while the engine oil of example 4, in which the novel anti-friction agent of example 1 was added, was able to further improve the high-temperature detergency of the engine oil while achieving an excellent energy saving effect.

The results of the analysis of the high-temperature detergency performance of the engine oils of examples 5 and 6 by the same test method as described above show that the high-temperature detergency performance of the engine oils of examples 5 and 6 is equivalent to that of the engine oil of example 4.

Although the invention has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.