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A kind of water-based magnetorheological polishing fluid and preparation method thereof

A magnetorheological polishing, water-based technology, applied in polishing compositions containing abrasives, etc., can solve the problems of insufficient viscosity stability, low zero magnetic field viscosity, and zero magnetic field viscosity, and achieve long-term effectiveness, zero magnetic field viscosity, etc. Magnetic field viscosity reduction and high viscosity stability effects

Active Publication Date: 2021-08-03
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(2) Lower zero magnetic field viscosity
In addition, the thixotropic agent used in the formula has a high zero magnetic field viscosity, and the viscosity stability of long-term polishing is insufficient

Method used

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  • A kind of water-based magnetorheological polishing fluid and preparation method thereof
  • A kind of water-based magnetorheological polishing fluid and preparation method thereof
  • A kind of water-based magnetorheological polishing fluid and preparation method thereof

Examples

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preparation example Construction

[0059] In the preparation step of the above-mentioned composite base carrier liquid provided by the present invention, in step a1), the stirring speed of the mixing is preferably 300-600r / min, specifically 300r / min, 350r / min, 400r / min, 450r / min / min, 500r / min, 550r / min or 600r / min; the mixing temperature is preferably 22 to 25°C, specifically 22°C, 23°C, 24°C or 25°C; the mixing time is preferably 1 ~2h, specifically 1h, 1.1h, 1.2h, 1.3h, 1.4h, 1.5h, 1.6h, 1.7h, 1.8h, 1.9h or 2h.

[0060] In the preparation step of the above-mentioned composite base carrier liquid provided by the present invention, in step a2), the stirring speed of the mixing is preferably 300-600r / min, specifically 300r / min, 350r / min, 400r / min, 450r / min / min, 500r / min, 550r / min or 600r / min; the mixing temperature is preferably 22 to 25°C, specifically 22°C, 23°C, 24°C or 25°C; the mixing time is preferably 0.5 ~1h, specifically 0.5h, 0.6h, 0.7h, 0.8h, 0.9h or 1h.

[0061] In the preparation step of the abo...

Embodiment 1

[0077] 1) Composition design

[0078] The specific components and contents of the water-based magnetorheological polishing fluid provided in this embodiment are as shown in Table 1:

[0079] Table 1 The composition information table of embodiment 1 magnetorheological polishing fluid

[0080]

[0081]

[0082] 2) Compare the composition information in Table 1, according to figure 1 The process shown in the preparation of water-based magnetorheological polishing fluid, the specific steps are as follows:

[0083] Step 1. Add the dispersion stabilizer sodium citrate into 250ml of deionized water and stir for 1 hour. The rotation speed of the stirrer is set at 400r / min, and the temperature is controlled between 22°C and 25°C.

[0084] Step 2. Add the wetting agent propylene glycol into the solution obtained in step 1, and stir for 0.5 hours with a stirrer, the speed of the stirrer is set at 400 r / min, and the temperature is controlled between 22°C and 25°C.

[0085] Step 3...

Embodiment 2

[0092] 1) Composition design

[0093] The specific components and contents of the water-based magnetorheological polishing fluid provided in this embodiment are as shown in Table 1:

[0094] Table 2 The composition information table of embodiment 2 magnetorheological polishing fluid

[0095]

[0096]

[0097] 2) Comparing the composition information in Table 2, according to figure 1 The process shown in the preparation of water-based magnetorheological polishing fluid, the specific steps are as follows:

[0098] Step 1. Add the dispersion stabilizer mixed with sodium tripolyphosphate and sodium hexametaphosphate into 250ml of deionized water and stir. The speed of the stirrer is set at 400r / min, and the temperature is controlled between 22°C and 25°C.

[0099] Step 2. Add the wetting agent sorbitol into the solution obtained in step 1, and stir for 0.5 hours with a stirrer, the speed of the stirrer is set at 400 r / min, and the temperature is controlled between 22°C and...

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Abstract

The invention belongs to the technical field of optical precision machining and manufacturing, and in particular relates to a water-based magnetorheological polishing liquid and a preparation method thereof. The water-based magnetorheological polishing liquid provided by the invention comprises: magnetic particles 77-88wt%; non-magnetic polishing powder 0.01wt‰-8wt%; dispersion stabilizer 0.2-0.5wt%; wetting agent 0.5-1wt%; chelating agent 0.1-0.4wt%; antioxidant 0.01-0.02wt%; pH adjuster 0.2-0.5wt%; solvent is water; the dispersion stabilizer is polyphosphate and / or citrate; the wetting agent is Polyol; the chelating agent is an aminocarboxylic acid compound and / or an organic phosphate. The water-based magnetorheological polishing liquid provided by the invention has good dispersion stability and viscosity stability, low zero magnetic field viscosity and high material removal efficiency.

Description

technical field [0001] The invention belongs to the technical field of optical precision machining, and in particular relates to a water-based magnetorheological polishing fluid and a preparation method thereof. Background technique [0002] Magneto-rheological polishing technology is an emerging optical surface precision processing technology. This processing technology integrates the knowledge of electromagnetism, chemistry, contact mechanics and fluid mechanics. It is a kind of processing between contact and non-contact. This method can be used to deterministically process optical elements of various materials. Especially for the polishing of materials such as glass and ceramics, it is the most widely used. The preparation technology of magnetorheological polishing fluid is one of the key technologies for the realization of magnetorheological polishing, and the excellent performance of magnetorheological polishing fluid is also a necessary condition for realizing magneto...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09G1/02
CPCC09G1/02
Inventor 白杨薛栋林王孝坤张学军张峰
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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