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Modified bentonite lubricating oil additive and preparation method thereof

A technology of lubricating oil additives and bentonite, which is applied in the directions of additives, lubricating compositions, chemical instruments and methods, etc., can solve the problems of easy agglomeration of nano-bentonite, and achieve the effect of not easy to agglomerate, increase the volume between layers, and increase the specific surface area.

Inactive Publication Date: 2020-11-17
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] In view of the above-mentioned shortcoming of prior art, the object of the present invention is to provide a kind of modified bentonite lubricating oil additive, is used to solve the problem that nano-bentonite is easily agglomerated in lubricating oil in the prior art, meanwhile, the present invention will also provide a A kind of preparation method of modified bentonite lubricating oil additive

Method used

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  • Modified bentonite lubricating oil additive and preparation method thereof
  • Modified bentonite lubricating oil additive and preparation method thereof
  • Modified bentonite lubricating oil additive and preparation method thereof

Examples

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Effect test

Embodiment 1

[0045] A preparation method of modified bentonite lubricating oil additive, comprising the steps of:

[0046] Step 1. Soak bentonite in dilute hydrochloric acid solution (0.4 mol / L molar concentration) for acidification, acidify at room temperature for 2 hours, wash and filter to obtain acid-swellable modified bentonite;

[0047] Step 2. Soak the acid-swellable modified bentonite once in an aqueous solution of sodium dodecylbenzenesulfonate (mass concentration: 0.8%). After stirring and soaking, filter out excess sodium dodecylbenzenesulfonate solution, and remove the solid Add saturated cupric chloride solution for secondary soaking to obtain copper ion intercalated bentonite; wherein, the temperature of the first soaking is 20°C and the time is 30min; the temperature of the second soaking is 20°C and the time is 4h;

[0048] Step 3, burning the bentonite intercalated with copper ions in a hydrogen atmosphere at a temperature of 420° C. for 3 minutes to obtain bentonite inter...

Embodiment 2

[0051] A preparation method of modified bentonite lubricating oil additive, comprising the steps of:

[0052] Step 1. Soak bentonite in dilute hydrochloric acid solution (0.5 mol / L molar concentration) for acidification, acidify at room temperature for 2 hours, wash and filter to obtain acid-swellable modified bentonite;

[0053] Step 2. Soak the acid-swellable modified bentonite once in an aqueous solution of sodium dodecylbenzenesulfonate (mass concentration: 1.2%). After stirring and soaking, filter out excess sodium dodecylbenzenesulfonate solution, and remove the solid matter Add saturated cupric chloride solution for secondary soaking to obtain copper ion intercalated bentonite; wherein, the temperature of the first soaking is 40°C, and the time is 15 minutes; the temperature of the second soaking is 40°C, and the time is 1h;

[0054] Step 3, burn the bentonite intercalated with copper ions in a hydrogen atmosphere at a temperature of 470° C. for 1 min to obtain bentonit...

Embodiment 3

[0057] A preparation method of modified bentonite lubricating oil additive, comprising the steps of:

[0058] Step 1. Soak bentonite in dilute hydrochloric acid solution (0.5 mol / L molar concentration) for acidification, acidify at room temperature for 1.5 hours, wash and filter to obtain acid-swellable modified bentonite;

[0059] Step 2. Soak the acid-swellable modified bentonite once in an aqueous solution of sodium dodecylbenzenesulfonate (mass concentration: 1.0%), stir and soak to filter out excess sodium dodecylbenzenesulfonate solution, and add the solids to Carry out secondary immersion in saturated copper chloride solution to obtain copper ion intercalated bentonite; wherein, the temperature of the first immersion is 24°C, and the time is 25min; the temperature of the second immersion is 25°C, and the time is 3h;

[0060] Step 3, burn the bentonite intercalated with copper ions in a hydrogen atmosphere at a temperature of 440° C. for 2 minutes to obtain bentonite int...

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Abstract

The invention relates to the technical field of lubricating oil additives, in particular to a preparation method of a modified bentonite lubricating oil additive, which comprises the following steps:soaking bentonite in a dilute acid solution, carrying out primary soaking on acid-swelling modified bentonite in a surfactant aqueous solution, and carrying out secondary soaking in a saturated copperchloride solution; finally, carrying out rapid sintering to obtain the bentonite with the nano metal copper inserted between the layers; finally, adding the bentonite, oleic acid, calcium borate, a high-temperature antioxidant and organic molybdenum into a sand mill to be ground and compounded, thereby obtaining the high-temperature-resistant bentonite. According to the preparation method of themodified bentonite lubricating oil additive, the copper ions are attached to the bentonite in advance and then reduced to form the nanoscale copper elementary substance, so that the obtaining difficulty of the nano-copper is reduced, and the preparation method is convenient to apply and popularize. The modified bentonite lubricating oil additive has good antifriction and antiwear properties, has good dispersibility in lubricating oil, and does not cause agglomeration.

Description

technical field [0001] The invention relates to the technical field of lubricating oil additives and preparation methods, in particular to a modified bentonite lubricating oil additive and a preparation method. Background technique [0002] Friction and wear is a ubiquitous natural phenomenon, and wear is the main cause of equipment damage during mechanical operation. As the most effective technical means to reduce friction and wear, lubricating oil plays an important role in high-performance machinery. With the development of lubricating oil industry, the performance of base lubricating oil has reached the technical bottleneck. To further improve the anti-wear, anti-friction and self-healing properties of lubricating oil requires functional lubricating oil additives. [0003] Lubricating oil additives are one or several compounds added to lubricants to obtain new properties or improve some existing properties of lubricants. Additives are classified by function into antio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M163/00C10M125/30C10M125/04C01B33/44C10N30/06
CPCC01B33/44C10M125/04C10M125/30C10M163/00C10M2201/05C10M2201/087C10M2201/103C10M2201/14C10M2207/126C10M2215/064C10M2215/065C10M2219/044C10M2219/068C10M2223/045
Inventor 陈庆曾军堂李钧司文彬
Owner CHENDU NEW KELI CHEM SCI CO LTD
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