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Preparation method of cadmium-doped molybdenum disulfide nano lubricating additive

A technology of lubricating additives and molybdenum disulfide, which is applied in the field of nanomaterials, can solve the problems of complex methods and high requirements for instruments and equipment, and achieve the effects of simple and easy-to-control processes, cost-effective input, and good tribological properties

Active Publication Date: 2014-03-05
ZHENJIANG COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Recently, the graphene-like structure MoS 2 2D structures have been widely reported, and the main preparation methods are liquid phase exfoliation, chemical exfoliation, ultrasonic exfoliation, etc. These methods are relatively complicated and require high equipment

Method used

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  • Preparation method of cadmium-doped molybdenum disulfide nano lubricating additive
  • Preparation method of cadmium-doped molybdenum disulfide nano lubricating additive
  • Preparation method of cadmium-doped molybdenum disulfide nano lubricating additive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A Cd-doped MoS 2 The preparation method of nano lubricant additive, comprises the steps:

[0022] (1) Add 0.22g Na 2 MO 4 , 0.3g Na 2 S, 0.28g NH 2 OH HCl and 0.1g CdSO 4 Dissolve in 60mL of deionized water, dissolve completely, and set aside;

[0023] (2) Continue to stir for 30 minutes, then transfer the obtained mixed solution to a 100ml stainless steel reaction kettle, place it in a vacuum drying oven at 180°C for 24 hours, and cool to room temperature;

[0024] (3) After centrifugation, the reaction product was washed repeatedly with deionized water and absolute ethanol, and finally dried at 80°C for 10 h under vacuum to obtain a gray-black product powder, that is, Cd-doped MoS 2 Nano lubricant additive.

[0025] The reagents and processing conditions that embodiment 2-4 adopt are shown in Table 1:

[0026] Table 1

[0027]

Embodiment 5

[0028] Example 5: Tribological test method: using an ultrasonic generator to dope the dispersant span 80 and the product Cd into MoS 2 The nanoflowers are uniformly dispersed in the base oil (paraffin), and prepared into a turbid liquid with a mass fraction of 1%-5%. The friction experiment of the oil sample is carried out on the CETR UMT-2 multifunctional friction and wear testing machine. The ball-disk contact is adopted, the rotation speed is 50-400rpm, the load is 10N-50N, and the experiment time is 30min. The type of stainless steel ball used in the experiment is 440-C (9Cr18), the diameter is 3mm, and the hardness is HRC62.

[0029] Cd-doped MoS obtained in Examples 1 to 4 2 The performance inspection parameters of nano-lubricating additives are shown in Table 2:

[0030] Table 2

[0031]

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Abstract

The invention discloses a preparation method of a cadmium-doped molybdenum disulfide nano lubricating additive, which is characterized by comprising the following steps: (1) dissolving (NH4)2MO4, Na2S, a reducer and a soluble cadmium salt in deionized water to obtain a mixture solution for later use; (2) transferring the solution obtained in the step (1) into a stainless steel reaction kettle, sealing, reacting at 130-260 DEG C for 24 hours, and cooling to room temperature to obtain the reaction product; and (3) separating the reaction product, washing, and drying to obtain the flower-structure Cd-doped MoS2 nanosheets assembled from nanosheets. The method has the advantages of simple technique and low cost; and the prepared product has the advantages of high purity, high yield, high specific area and favorable tribological performance.

Description

technical field [0001] The invention relates to the field of nanomaterials, in particular to a cadmium (Cd) doped molybdenum disulfide (MoS 2 ) The preparation method of nano-lubricating additive. Background technique [0002] MoS 2 The material is a typical layered structure material, each MoS 2 The monolayer is composed of one layer of Mo atoms and the upper and lower layers of S atoms. Covalent bonds are formed between Mo and S atoms, so the monolayer structure is very stable, and the layers are combined through weak van der Waals interactions, so With good physical and chemical properties and novel structure, it is widely used in solid lubricants, desulfurization catalysts for petrochemical production, elastic coating materials, hydrogen storage materials, lithium storage electrode materials, catalytic hydrogenation and other fields. Especially MoS with 2D structure 2 Nanomaterials have received extensive research and attention, and ordinary MoS 2 Compared to MoS 2...

Claims

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Application Information

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IPC IPC(8): C01G39/06B82Y40/00B82Y30/00
Inventor 唐国钢唐华汪萍
Owner ZHENJIANG COLLEGE
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