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Water-based magneto-rheological polishing liquid for optical processing and preparation method thereof

A technology of magnetorheological polishing and optical processing, which is applied in the direction of polishing compositions containing abrasives, magnetic liquids, etc., can solve the problems of reduced shear stress, complex processes, and high prices, and achieves large shear yield stress and formulated The effect of simple process and high static stability

Inactive Publication Date: 2008-08-27
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of water as the base carrier liquid has the following problems: 1. Poor compatibility with the magnetically sensitive particles, the magnetically sensitive particles are easy to settle and agglomerate, making the coagulation stability and sedimentation stability of the magnetorheological polishing fluid worse; 2. Sensitive particles are easily oxidized, resulting in reduced shear stress and poor rheology
This method is complicated in process and high in production cost. It will be very expensive for the polishing of optical parts that require a large amount of magnetorheological polishing fluid.

Method used

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  • Water-based magneto-rheological polishing liquid for optical processing and preparation method thereof
  • Water-based magneto-rheological polishing liquid for optical processing and preparation method thereof
  • Water-based magneto-rheological polishing liquid for optical processing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] A water-based magnetorheological polishing fluid was prepared, and its added components were: 15ml of polishing powder cerium oxide with an average particle size of 0.5um, 130ml of carbonyl iron powder with an average particle size of 5μm, and 8ml of nano-iron powder with an average particle size of 50nm.

[0056] The water-based compound carrier liquid is: 240ml of deionized water, 10ml of organic bentonite as a thixotropic agent, 14ml of ethylenediaminetetramethylphosphate as a dispersant, 14ml of glycerol as a wetting agent, 0.5ml of sodium nitrite as an antioxidant, and Foam agent mineral oil 1ml and PH value regulator sodium carbonate 0.5ml.

[0057] The preparation steps are as follows:

[0058] Step 1. Add 10ml (3.57%) of thixotropic organobentonite to 240ml (85.71%) of deionized water, and stir at room temperature for 1 hour to obtain a suspension;

[0059] Step 2. Add 14ml (5%) dispersant ethylenediaminetetramethylphosphate into the suspension obtained in step...

Embodiment 2

[0066] A water-based magnetorheological polishing solution was prepared, and its additive components were: 12ml of polishing powder diamond micropowder with an average particle size of 0.5um, 130ml of carbonyl iron powder with an average particle size of 5μm, and 6ml of nano-iron powder with an average particle size of 50nm.

[0067] The water-based compound carrier liquid is: 240ml of deionized water, 10ml of organic bentonite as a thixotropic agent, 14ml of ethylenediaminetetraacetate as a dispersant, 14ml of glycerol as a wetting agent, 0.5ml of sodium nitrite as an antioxidant, and 0.5ml of defoaming agent Agent mineral oil 1ml and PH value regulator borax 0.5ml.

[0068] The preparation steps are as follows:

[0069] Step 1. Add 10ml (3.57%) of thixotropic organobentonite to 240ml (85.71%) of deionized water, and stir at room temperature for 1 hour to obtain a suspension;

[0070] Step 2. Add 14ml (5%) dispersant ethylenediamine tetraacetate to the suspension obtained in...

Embodiment 3

[0077] The water-based magnetorheological polishing fluid was prepared, and its added components were: 33ml of polishing powder cerium oxide with an average particle size of 0.5um, 570ml of carbonyl iron powder with an average particle size of 5μm, and 67ml of nano-iron powder with an average particle size of 50nm.

[0078] Its water-based compound carrier liquid is: 240ml of deionized water, 10ml of thixotropic agent sodium carboxymethyl cellulose, 14ml of dispersant ethylenediamine tetramethyl phosphate, 14ml of wetting agent glycerin, and antioxidant sodium nitrite 0.5ml, defoamer mineral oil 1ml and PH value regulator sodium carbonate 0.5ml.

[0079] The preparation steps are as follows:

[0080] Step 1. Add 10ml (3.57%) of the thixotropic agent sodium carboxymethylcellulose into 240ml (85.71%) of deionized water, and stir at room temperature for 1 hour to obtain a suspension;

[0081] Step 2. Add 14ml (5%) dispersant ethylenediaminetetramethylphosphate into the suspensio...

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Abstract

The invention relates to a water-based magnetorheological polishing solution for optical manufacture, which is formed by the following volume components, water-based remixed carrier liquid 25%-75% and additive component 25%-75%, wherein the additive component is dispensed by the following volume percentage, carbonyl iron powder 80%-90%, nanometer iron powder 4%-10% and polishing powder 4%-10%, the water-based remixed carrier liquid which is measured according to volume percentage comprises deionized water 85%-90%, dispersing agent 3%-5%, wetting agent 2%-5% and thixotropic agent 3%-5%, the method for preparing comprises the following steps: mixing deionized water and thixotropic agent, stirring in indoor temperature for 1-2 hours, and adding dispersing agent, stirring in indoor temperature for 0.5-1 hour, and then adding wetting agent, stirring in indoor temperature for 0.5-1 hour, getting water-based remixed carrier liquid, mixing additive component and water-based remixed carrier liquid, adding into a ball-milling tank, adding into a steel ball according to mass ratio which is 1:10, grinding for 3-5 hours in the speed which is 20-30r / m, separating out a steel ball, and getting products. The polishing solution of the invention has the advantages of excellent stability, high rheological property, excellent oxidation resistance property and simple and environmental-friendly preparation technology.

Description

technical field [0001] The invention belongs to the field of processing and manufacturing of precision optical parts, and in particular relates to a water-based magnetorheological polishing liquid for manufacturing optical parts and a preparation method thereof. Background technique [0002] Magnetorheological polishing technology is a deterministic advanced optical manufacturing technology. It uses the solid-liquid phase transient characteristics of magnetorheological fluid under high-intensity gradient magnetic field, and the shear yield stress and Due to the influence of local shape, a "flexible polishing mold" that can match the processed surface is formed, so as to realize the deterministic, high-precision and quantitative modification and polishing of optical components, while ensuring the surface processing quality of sub-nanometer roughness, tiny Workpiece subsurface damage and high machining efficiency. To achieve high-precision and high-efficiency magnetorheologic...

Claims

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Application Information

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IPC IPC(8): C09G1/02H01F1/44
Inventor 李圣怡戴一帆彭小强宋辞石峰陈善勇郑子文
Owner NAT UNIV OF DEFENSE TECH
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