Water-based nanometer hydraulic fluid based on particle surface treatment, preparation method and application thereof

A particle surface, surface modification nanotechnology, applied in dyeing organosilicon compound treatment, petroleum industry, additives and other directions, can solve problems such as poor stability of water-based nano hydraulic fluid, reduce precipitation, solve poor stability, and have wide application prospects Effect

Inactive Publication Date: 2018-02-23
HENAN POLYTECHNIC UNIV
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of poor stability of water-based nano-hydraulic fluid in the prior art, the prese

Method used

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  • Water-based nanometer hydraulic fluid based on particle surface treatment, preparation method and application thereof
  • Water-based nanometer hydraulic fluid based on particle surface treatment, preparation method and application thereof
  • Water-based nanometer hydraulic fluid based on particle surface treatment, preparation method and application thereof

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Example Embodiment

[0039] The preparation method of the water-based nano hydraulic fluid includes the following steps: preparation of a silane solution, which uses 3-(2,3-glycidoxy)propyltrimethoxysilane and distilled water to prepare a silane solution, and uses dilute in the preparation process. Adjust the pH with hydrochloric acid and dilute sodium hydroxide. Adjust the pH of the solution to 2 with dilute hydrochloric acid. The pH of 2 is beneficial to the hydrolysis of 3-(2,3-glycidoxy)propyltrimethoxysilane in water. , Greater than 2 or less than 2, will have a certain impact on the hydrolysis of 3-(2,3-glycidoxy)propyltrimethoxysilane, that is to say, a PH of 2 is 3-(2,3-epoxy The best conditions for hydrolysis of propoxy)propyltrimethoxysilane, then adjust the pH of the solution to 10 with dilute sodium hydroxide solution, and stir vigorously at a stirring rate of 600~700r / min, preferably at 700r / min for 5 Hours, the silane solution is prepared, and the mass fraction of 3-(2,3-glycidoxy)pro...

Example Embodiment

[0048] Example 1

[0049] The first step: mix 23.7g of 3-(2,3-glycidoxy)propyltrimethoxysilane with 1000g of distilled water, and titrate the pH of the solution with HCl until the pH is 2, at 650r at room temperature / min stirring for 5 hours, then use NaOH solution to adjust the pH of the solution to 10;

[0050] The second step: Mix 25.7g of silica nanoparticles with 1000g of distilled water, and ultrasonically disperse for 10 hours to prepare an aqueous solution of nanoparticles;

[0051] Step 3: Add dropwise the silane solution prepared in the first step to the nanoparticle aqueous solution prepared in the second step, and heat and homogenize the mixed solution, and then perform dialysis, freezing, and suction lyophilization treatments in sequence. Obtain surface-modified nanoparticles, wherein the mass ratio of the silane solution to the aqueous nanoparticle solution is 1:4;

[0052] Among them, the heating homogenization treatment is to ultrasonically stir the solution for 48 h...

Example Embodiment

[0054] Example 2

[0055] The first step: Mix 25g of 3-(2,3-glycidoxy)propyltrimethoxysilane with 1000g of distilled water, and titrate the pH of the solution with HCl until the pH is 2, and the temperature is 700r / Min stirring for 5 hours, then use NaOH solution to adjust the pH value of the solution to 10;

[0056] Step 2: Mix 27g of silica nanoparticles with 1000g of distilled water, and ultrasonically disperse for 10 hours to prepare an aqueous solution of nanoparticles;

[0057] Step 3: Add dropwise the silane solution prepared in the first step to the nanoparticle aqueous solution prepared in the second step, and heat and homogenize the mixed solution, and then perform dialysis, freezing, and suction lyophilization treatments in sequence. Obtain surface modified nanoparticles, wherein the mass ratio of the silane solution to the aqueous nanoparticle solution is 1:3.8;

[0058] Among them, the heating homogenization treatment is to ultrasonically stir the solution at 72°C for 4...

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Abstract

The invention provides a preparation method for a water-based nanometer hydraulic fluid based on particle surface treatment. The method comprises the following steps: firstly, preparing a silane solution and a nanometer particle aqueous solution; mixing the silane solution with the nanometer particle aqueous solution and performing heating homogenizing treatment, dialysis treatment, freezing treatment and suction freeze-drying treatment in turn, thus obtaining a surface modified nanometer particle; dissolving the surface modified nanometer particle in pure water and dispersing, thus obtainingthe water-based nanometer hydraulic fluid. According to the invention, a water-based nanometer particle with high stability is prepared through the surface treatment for the silicon dioxide nanometerparticle; the novel water-based nanometer particle is added into the pure water, so that the wear-resistant and antifriction performances of the pure water can be promoted, the dispersing uniformity of the nanometer particle in the pure water can be promoted and the precipitation of the nanometer particle is reduced; the water-based nanometer hydraulic fluid provided by the invention can be applied to a hydraulic driving system and has a wide application prospect.

Description

technical field [0001] The invention belongs to the field of fluid transmission and control, and in particular relates to a water-based nano-hydraulic fluid based on particle surface treatment and its preparation method and application. Background technique [0002] In the process of hydraulic transmission, the working medium for energy transmission, exchange and control is called hydraulic fluid. Mineral oil hydraulic fluid has become the main medium of hydraulic transmission due to its excellent lubricating properties. However, oil hydraulic fluid not only consumes a lot of oil resources, but also pollutes the environment to a large extent and has flammable hazards. In recent decades, with the improvement of awareness of energy saving and environmental protection, hydraulic transmission technology has been paid more attention by people. However, using pure water as a hydraulic fluid has many disadvantages, such as poor film-forming ability, low ultimate shear stress, and ...

Claims

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Application Information

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IPC IPC(8): C10M125/26C10M173/00C09C1/28C09C3/12C10N30/04C10N40/08C10N40/02C10N40/04
CPCC09C1/28C09C3/12C10M125/26C10M173/00C10M2201/14C10N2030/04C10N2040/02C10N2040/04C10N2040/08
Inventor 温小萍苏腾飞张素梅邓浩鑫王发辉丁浩青崔麟肖记军
Owner HENAN POLYTECHNIC UNIV
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