Environment-friendly and wear-resistant lubricating oil, preparation method and application thereof

Abstract

The present application relates to the technical field of lubricating oil, and particularly relates to an environment-friendly and wear-resistant lubricating oil and a preparation method and application thereof.The environment-friendly and wear-resistant lubricating oil provided by the present application comprises the following components in mass fraction: 100 parts of base oil; 2-3 parts of antioxidant; 5-8 parts of extreme pressure and wear-resistant agent; 1-3 parts of friction-reducing agent; 1-3 parts of defoaming agent; 10-20 parts of dispersant; 3-5 parts of pour point depressant; 2-4 parts of modified carbon fiber; and 0.3-0.4 parts of modified graphene.The present application mainly adopts vegetable base oil, is thus environment-friendly, and has excellent wear resistance.

Description

Technical Field

[0001] This invention relates to the field of lubricating oil technology, and in particular to an environmentally friendly, wear-resistant lubricating oil, its preparation method, and its application. Background Technology

[0002] Lubricating oil is a liquid or semi-solid lubricant used in automobiles and machinery to reduce friction and protect machinery and processed parts. Lubricating oil consists of two parts: base oil and additives. Base oil is the main component of lubricating oil and determines its basic properties. Base oils are mainly divided into three categories: mineral base oils, synthetic base oils, and vegetable oil base oils. Mineral base oils and synthetic base oils have high sulfur and nitrogen content, resulting in large pollutant emissions and posing a great threat to environmental pollution. Furthermore, existing lubricating oils have unstable chemical properties, low anti-wear performance, and are prone to toxicity, polluting the air and the ecological environment. Summary of the Invention

[0003] In view of this, the present invention provides an environmentally friendly, wear-resistant lubricating oil, its preparation method and application. The environmentally friendly, wear-resistant lubricating oil provided by the present invention has excellent wear resistance and will not cause pollution to the environment.

[0004] To address the aforementioned technical problems, this invention provides an environmentally friendly, wear-resistant lubricating oil, comprising the following components by weight:

[0005]

[0006] The base oils include vegetable base oils and methyl glucoside stearate; the vegetable base oils include castor oil and / or rapeseed oil;

[0007] The antioxidants include diarylamines and zinc dialkyldithiocarbamate salts;

[0008] The extreme pressure wear-resistant agent includes phosphate esters and / or phosphites;

[0009] The friction reducing agent includes one or more of calcium carbonate, sepiolite, mica powder, bentonite, and kaolin.

[0010] The defoamer includes polyoxypropylene glycerol ether and polyoxypropylene polyoxyethylene glycerol ether;

[0011] The dispersant is diene succinimide and polyisobutylene succinimide.

[0012] Preferably, the pour point depressant comprises one or more of poly-α-olefin, polymethacrylate, and ethylene-vinyl acetate copolymer.

[0013] Preferably, the mass ratio of the vegetable base oil to methyl glucoside stearate is 70-80:20-30.

[0014] Preferably, the mass ratio of the polyoxypropylene glycerol ether to the polyoxypropylene polyoxyethylene glycerol ether is 1 to 2:1.

[0015] Preferably, the mass ratio of the diarylamine to zinc dialkyldithiocarbamate is 1 to 2:1.

[0016] Preferably, the modified carbon fiber is carbon fiber coated with a silane coupling agent; the mass ratio of the silane coupling agent to the carbon fiber is 5 to 10:1.

[0017] Preferably, the modified graphene comprises graphene and a silane coupling agent coated on the surface of the graphene; the mass ratio of the silane coupling agent to the graphene is 10 to 20:1.

[0018] This invention also provides a method for preparing the above-mentioned environmentally friendly and wear-resistant lubricating oil, comprising the following steps;

[0019] The base oil, extreme pressure wear-resistant agent, friction reducer, dispersant, pour point depressant, modified graphene, and modified carbon fiber are sequentially ultrasonically mixed and stirred to obtain the environmentally friendly and wear-resistant lubricating oil.

[0020] Preferably, the ultrasonic mixing power is 800-1000W and the time is 0.5-1h; the stirring speed is preferably 300-500rpm and the time is 0.5-1h.

[0021] This invention also provides the application of the aforementioned environmentally friendly and wear-resistant lubricating oil in gear protection.

[0022] This invention provides an environmentally friendly, wear-resistant lubricating oil, comprising the following components by weight: 100 parts base oil; 2-3 parts antioxidant; 5-8 parts extreme pressure wear-resistant agent; 1-3 parts friction reducer; 1-3 parts defoamer; 10-20 parts dispersant; 3-5 parts pour point depressant; 2-4 parts modified carbon fiber; and 0.3-0.4 parts modified graphene. The base oil includes vegetable base oil and methyl glucoside stearate; the vegetable base oil includes castor oil and / or rapeseed oil; the antioxidant includes diarylamine and zinc dialkyl dithiocarbamate; the extreme pressure wear-resistant agent includes phosphate ester and / or phosphite ester; the friction reducer includes one or more of calcium carbonate, sepiolite, mica powder, bentonite, and kaolin; the defoamer includes polyoxypropylene glycerol ether and polyoxypropylene polyoxyethylene glycerol ether; and the dispersant is diene succinimide and polyisobutylene succinimide. This invention primarily uses vegetable-based base oils, making it environmentally friendly while also exhibiting excellent wear resistance. Detailed Implementation

[0023] This invention provides an environmentally friendly, wear-resistant lubricating oil, characterized in that it comprises the following components by weight:

[0024]

[0025] The base oil includes vegetable base oil and methyl glucoside stearate;

[0026] The vegetable base oils include castor oil and / or rapeseed oil;

[0027] The antioxidants include diarylamines and zinc dialkyldithiocarbamate salts;

[0028] The wear-resistant agent includes phosphate esters and modified carbon fibers;

[0029] The friction reducing agent includes one or more of calcium carbonate, sepiolite, mica powder, bentonite, and kaolin.

[0030] The defoamer includes polyoxypropylene glycerol ether and polyoxypropylene polyoxyethylene glycerol ether;

[0031] The dispersant is diene succinimide and polyisobutylene succinimide.

[0032] In this invention, the environmentally friendly, wear-resistant lubricating oil comprises 100 parts by weight of base oil, wherein the base oil includes vegetable base oil and methyl glucoside stearate. In this invention, the preferred mass ratio of the vegetable base oil to methyl glucoside stearate is 70-80:20-30, more preferably 75:25. In this invention, the vegetable base oil includes castor oil and / or rapeseed oil.

[0033] In this invention, the environmentally friendly, wear-resistant lubricating oil comprises, by weight, 2 to 3 parts of antioxidant, preferably 2.5 parts. In this invention, the antioxidant comprises diarylamine and zinc dialkyldithiocarbamate; the mass ratio of the diarylamine to zinc dialkyldithiocarbamate is preferably 1 to 2:1, more preferably 1.5:1.

[0034] In this invention, the environmentally friendly, wear-resistant lubricating oil comprises, by weight, 5 to 8 parts of extreme pressure wear-resistant agent, preferably 6 parts. In this invention, the extreme pressure wear-resistant agent comprises phosphate esters and / or phosphites.

[0035] In this invention, the environmentally friendly, wear-resistant lubricating oil comprises, by weight, 1 to 3 parts of a friction reducer, preferably 2 parts. In this invention, the friction reducer comprises one or more of calcium carbonate, sepiolite, mica powder, bentonite, and kaolin, more preferably calcium carbonate.

[0036] In this invention, the environmentally friendly, wear-resistant lubricating oil comprises, by weight, 1 to 3 parts of defoamer, preferably 2 parts. In this invention, the defoamer comprises polyoxypropylene glycerol ether and polyoxypropylene polyoxyethylene glycerol ether, and the mass ratio of the polyoxypropylene glycerol ether to the polyoxypropylene polyoxyethylene glycerol ether is preferably 1 to 2:1, more preferably 1:1.

[0037] In this invention, the environmentally friendly and wear-resistant lubricating oil comprises, by weight, 10 to 20 parts of dispersant, preferably 15 parts; the dispersant preferably comprises diene succinimide and polyisobutylene succinimide; the mass ratio of diene succinimide to polyisobutylene succinimide is preferably 1:1 to 2.

[0038] In this invention, the environmentally friendly and wear-resistant lubricating oil includes 3 to 5 parts by weight of a pour point depressant, preferably 4 parts; the pour point depressant preferably includes one or more of poly-α-olefin, polymethacrylate, and ethylene-vinyl acetate copolymer, more preferably poly-α-olefin or polymethacrylate.

[0039] In this invention, the environmentally friendly and wear-resistant lubricating oil comprises, by weight, 2 to 4 parts of modified carbon fiber, preferably 3 parts; the modified carbon fiber preferably comprises carbon fiber and a silane coupling agent coated on the surface of the carbon fiber; the mass ratio of the silane coupling agent to the carbon fiber is preferably 5 to 10:1, more preferably 7 to 8:1.

[0040] In this invention, the environmentally friendly, wear-resistant lubricating oil comprises, by weight, 0.3 to 0.4 parts of modified graphene, preferably 0.3 parts; the modified graphene comprises graphene and a silane coupling agent coated on the surface of the graphene. In this invention, the mass ratio of the silane coupling agent to graphene is preferably 10 to 20:1, more preferably 15:1.

[0041] This invention also provides a method for preparing the above-mentioned environmentally friendly and wear-resistant lubricating oil, comprising the following steps;

[0042] The base oil, extreme pressure wear-resistant agent, friction reducer, dispersant, pour point depressant, modified graphene, and modified carbon fiber are sequentially ultrasonically mixed and stirred to obtain the environmentally friendly and wear-resistant lubricating oil.

[0043] In this invention, the frequency of the ultrasonic mixing is preferably 800-1000W, more preferably 900W; the time is preferably 0.5-1h, more preferably 40min.

[0044] In this invention, the stirring speed is preferably 300-500 rpm, more preferably 400 rpm, and the stirring time is preferably 0.5-1 h, more preferably 0.6 h.

[0045] This invention also provides the application of the aforementioned environmentally friendly and wear-resistant lubricating oil in gear protection.

[0046] To further illustrate the present invention, the technical solutions provided by the present invention will be described in detail below with reference to the embodiments, but they should not be construed as limiting the scope of protection of the present invention.

[0047] Example 1

[0048]

[0049]

[0050] Example 2

[0051]

[0052] Example 3

[0053]

[0054]

[0055] Example 4

[0056]

[0057] Example 4

[0058]

[0059] Example 5

[0060]

[0061]

[0062] Example 6

[0063]

[0064] Comparative Example 1

[0065] The only difference from Example 1 is that no modified graphene is added.

[0066] Comparative Example 2

[0067] The only difference from Example 1 is that no modified carbon fiber is added.

[0068] Preparation method:

[0069] The raw materials corresponding to the examples and comparative examples were ultrasonically mixed at 1000W power for 30 minutes and then stirred at 500rpm for 1 hour to obtain the environmentally friendly and wear-resistant lubricating oil.

[0070] The present invention also tested the wear performance of the environmentally friendly and wear-resistant lubricating oils in the embodiments and comparative examples. The test method was: four-ball machine wear test; wear test 50℃, load 15kg, 500r / min;

[0071] The test results are shown in Table 1.

[0072] Table 1. Test results of wear performance of environmentally friendly and wear-resistant lubricating oils

[0073]

[0074]

[0075] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An environmentally friendly, wear-resistant lubricating oil, characterized in that, It consists of the following components by mass parts: 78 parts castor oil; 22 parts methyl glucoside stearate; 1.5 parts each of diarylamine and zinc dialkyldithiocarbamate; 8 parts of phosphate ester; Calcium carbonate 1 part; mica powder 1 part; bentonite 1 part; 1.5 parts each of polyoxypropylene glycerol ether and polyoxypropylene polyoxyethylene glycerol ether; 5 parts of diene succinimide; 10 parts of polyisobutylene succinimide; 3 parts polymethyl methacrylate; Four parts of modified carbon fiber; the modified carbon fiber is carbon fiber coated with silane coupling agent, and the mass ratio of silane coupling agent to carbon fiber is 10:1; 0.4 parts of modified graphene; the modified graphene is graphene and a silane coupling agent coated on the surface of the graphene, and the mass ratio of the silane coupling agent to the graphene is 10:

1.

2. The method for preparing the environmentally friendly, wear-resistant lubricating oil according to claim 1, characterized in that, Includes the following steps; The raw materials were ultrasonically mixed at 1000W power for 30 minutes and then stirred at 500rpm for 1 hour to obtain the environmentally friendly and wear-resistant lubricating oil.

3. The application of the environmentally friendly and wear-resistant lubricating oil described in claim 1 in gear protection.

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