High-stability magnetorheological polishing liquid for optical part processing and preparation method thereof

A magnetorheological polishing, high-stability technology, applied in polishing compositions containing abrasives, etc., can solve the problems of low removal efficiency and low yield stress on the surface of optical parts, and achieve improved material volume removal efficiency and redispersion. The effect of strong performance and excellent flow performance

Inactive Publication Date: 2018-04-20
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The yield stress is small, and the material remova

Method used

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  • High-stability magnetorheological polishing liquid for optical part processing and preparation method thereof
  • High-stability magnetorheological polishing liquid for optical part processing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The preparation method of the high-stability magnetorheological polishing fluid for the optical parts is as follows:

[0032] 1. According to the volume fraction content of 52% deionized water and 3% sodium hexametaphosphate, add sodium hexametaphosphate to deionized water, and stir at 300r / min at room temperature for 0.5 hours to obtain sodium hexametaphosphate solution;

[0033] 2. According to the content of 1% volume fraction of nano-magnesium-aluminum silicate, add nano-magnesium-aluminum silicate to sodium hexametaphosphate solution, and stir at 300r / min for 1 hour at room temperature to obtain a mixed solution;

[0034]3. According to the content of 2% volume fraction of glycerol, add it to the mixture, and stir at 300r / min for 30min at room temperature until fully dissolved;

[0035] 4. According to the content of 0.5% volume fraction of sodium benzoate, add it to the mixture, and stir at 300r / min for 30min at room temperature;

[0036] 5. According to the cont...

Embodiment 2

[0043] The preparation method of the high-stability magnetorheological polishing fluid for the optical parts is as follows:

[0044] 1. According to the volume fraction content of 56.2% of ionized water and 1% of sodium polyacrylate, sodium polyacrylate was added to deionized water, and stirred at 350r / min at room temperature for 1 hour to obtain sodium polyacrylate solution;

[0045] 2. Add nano-silica to the sodium polyacrylate solution according to the content of 0.2% volume fraction of nano-silica, and stir at 350 r / min for 1 hour at room temperature to obtain a mixed solution;

[0046] 3. According to the content of 2% volume fraction of glycerol, add it to the mixture, and stir at 350r / min for 30min at room temperature until fully dissolved;

[0047] 4. According to the content of 0.5% volume fraction of sodium benzoate, add it to the mixture, and stir at 350r / min for 30min at room temperature;

[0048] 5. According to the content of 0.1% volume fraction of sodium carbo...

Embodiment 3

[0055] The preparation method of the high-stability magnetorheological polishing fluid for the optical parts is as follows:

[0056] 1. According to the content of 58% deionized water and 1% volume fraction of sodium lignosulfonate, add sodium lignosulfonate to deionized water, stir at 400r / min at room temperature for 1 hour, and obtain sodium lignosulfonate solution ;

[0057] 2. Add nano-silica to the sodium lignosulfonate solution according to the volume fraction of 0.4% of nano-silica, and stir at 400 r / min for 0.5 hours at room temperature to obtain a mixed solution;

[0058] 3. According to the content of 1% volume fraction of glycerol, add it to the mixture, and stir at 400r / min for 30min at room temperature until fully dissolved;

[0059] 4. According to the content of 0.5% volume fraction of sodium benzoate, add it to the mixture, and stir at 400r / min for 30min at room temperature;

[0060] 5. According to the content of 0.1% volume fraction of sodium carbonate, add...

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Abstract

The invention provides high-stability magnetorheological polishing liquid for optical part processing. The high-stability magnetorheological polishing liquid consists of the following components in percentage by weight: 30-40 percent of magnetic particles, 1-3 percent of a wetting agent, 0.1-0.5 percent of a pH regulating agent, 0.1-0.5 percent of a corrosion inhibitor, 1-5 percent of a surface active agent, 0.1-1 percent of a thixotropic agent, 0.1-0.5 percent of a polishing powder and 50-60 percent of deionized water. A preparation method of the high-stability magnetorheological polishing liquid comprises the following steps: mixing and stirring the surface active agent and the deionized water in proportion for 0.5-1 hour; adding the thixotropic agent; sequentially adding the wetting agent and the corrosion inhibitor; adding the pH regulating agent to regulate the pH value to 10; then stirring the carbonyl iron powder and the polishing powder in proportion for 1 hour, adding obtainedinitial mixed magnetorheological polishing liquid in an emulsifying machine for stirring to obtain the high-stability magnetorheological polishing liquid for optical part processing. The high-stability magnetorheological polishing liquid for optical part processing, provided by the invention, is larger in magnetorheological liquid shear stress, good in re-dispersion performance and higher in material removal efficiency and can maintain long-term polishing stability on a machine tool, and the production process is simple and easy to implement, can be used for mass production and can also meetthe demands on ultra-precision machining of advanced optical parts.

Description

technical field [0001] The invention relates to the technical field of ultra-precision machining and manufacturing of optical parts, in particular to a high-stability magnetorheological polishing fluid for processing optical parts and a preparation method thereof. Background technique [0002] With the development of science and technology, modern optical systems are changing with each passing day, and are widely used in laser weapons, optical mirrors, lenses, optical scanning systems, optical fiber communications, spaceborne laser altimeters, etc., and the demand for optical components continues to rise. The optical manufacturing industry needs to stably provide large quantities of optical parts of various calibers in a short period of time, and the surface accuracy of optical parts is required to be high. The surface shape accuracy needs to be better than tens of nanometers, and the surface roughness needs to be better than nanometer level. Optical parts produced by tradit...

Claims

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Application Information

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IPC IPC(8): C09G1/02
Inventor 邵建达雷宇魏朝阳
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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