Nano lubricating additive for regulating and controlling interface friction as well as preparation method and application of nano lubricating additive

A lubricating additive and interfacial friction technology, applied in the direction of additives, lubricating compositions, petroleum industry, etc., can solve the problems of high control efficiency, time-consuming, complex changing conditions, etc., and achieve the goal of increasing reaction rate, stability, and viscosity Effect

Active Publication Date: 2021-09-03
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the complicated and time-consuming difficulties of using temperature-sensitive or pH-sensitive polymers for friction regulation in the past. Using near-infrared light to regulate friction can perform remote reversible adjustment without additional complicated devices, and the adjustment range is controllable. efficient

Method used

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  • Nano lubricating additive for regulating and controlling interface friction as well as preparation method and application of nano lubricating additive
  • Nano lubricating additive for regulating and controlling interface friction as well as preparation method and application of nano lubricating additive
  • Nano lubricating additive for regulating and controlling interface friction as well as preparation method and application of nano lubricating additive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A nano-lubricating additive for regulating interfacial friction, comprising a core-shell structure nanosphere formed by using gold nanoparticles as the inner core and a temperature-sensitive polymer cross-linked network as the outer shell, and the nanosphere is a composite microgel nanosphere.

[0033] The above-mentioned manufacturing method of the nano-lubricating additive for regulating and controlling interfacial friction comprises the following steps:

[0034] S1. After heating 50mL tetrachloroauric acid solution (0.01wt.%) to boiling, slowly drop into 0.3mL trisodium citrate solution (1.0wt.%), the solution turns from light yellow to dark blue, and then becomes dark blue. Red, at this time the gold nanoparticles are reduced. After 15min, the reaction was completely finished, and 50mL of a solution containing gold nanoparticles was obtained, and its mass fraction was calculated to be 1.0wt.%.

[0035] S2. Synthesize composite microgel spheres (referred to as PTMGs) ...

Embodiment 2

[0038] The preparation method is the same as in Example 1, the difference is that: add the same volume of deionized water to the nano-lubricating additive, fully ultrasonically disperse, dilute the mass fraction of the microgel suspension to 0.5wt.%, and obtain a mass fraction of 1.0wt%. Nano lubricant additive.

Embodiment 3

[0040] The preparation method is the same as in Example 1, the difference is that: take out part of the synthesized microgel dispersion, evaporate half of the deionized water, concentrate the mass fraction of the microgel suspension to 2.0wt.%, and obtain a mass fraction of 2.0 wt% nano-lubricating additives.

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Abstract

The invention belongs to the technical field of functional materials and preparation thereof, and provides a nano lubricating additive for regulating and controlling interface friction, a preparation method and application, the nano lubricating additive comprises core-shell structure nanospheres formed by taking gold nanoparticles as a core and taking a temperature-sensitive polymer cross-linked network as a shell; the manufacturing method comprises the following steps that s1, reducing gold ions into gold nanoparticles, and preparing a gold nanoparticle solution; s2, synthesizing a composite microgel ball dispersion liquid by adopting a soap-free emulsion polymerization method; s3, purifying the composite microgel ball dispersion liquid synthesized in the step S2; wherein composite microgel balls are dispersed in water, are used as a hydrated lubricating additive, can respond to near-infrared light stimulation, and are used for preparing a friction force switching agent for realizing rapid switching between low friction and high friction. The nano lubricating additive prepared by adopting soap-free emulsion polymerization can respond to near-infrared light stimulation, so that rapid switching between low friction and high friction is realized, and the friction performance of microgel is remotely regulated and controlled.

Description

technical field [0001] The invention belongs to the technical field of functional materials and their manufacture, and in particular relates to a nano lubricating additive for regulating interfacial friction, a manufacturing method and an application. Background technique [0002] Friction can be seen everywhere in our daily life. When walking and holding things, friction needs to be increased. However, during the operation of the machine, friction may cause wear and failure of parts, and effective measures need to be taken to reduce friction. Therefore, it is very necessary to adjust and control the friction according to different needs. In theory, the friction depends on the surface properties of the contact surface and its interaction. By adjusting the contact surface properties and interaction, the uncontrollable friction can be converted into a controllable controlled friction. Especially interfacial friction control can be achieved in a reversible manner by various ...

Claims

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Application Information

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IPC IPC(8): C10M161/00C10M177/00C08F220/54C08F220/06C08F222/38C08F2/22C08F2/44C08K3/08C10N30/02C10N30/06
CPCC10M161/00C10M177/00C08F220/54C08F2/22C08F2/44C08K3/08C08K2003/0831C08K2201/011C10M2201/05C10M2209/084C10M2217/024C10N2030/02C10N2030/06C08F220/06C08F222/385C10N2020/06
Inventor 刘国强陈卓冯杨赵楠刘维民
Owner NORTHWESTERN POLYTECHNICAL UNIV
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