Magnetorheologicai polishing liquid and preparation method thereof

Abstract

The invention relates to a magnetic rheological polishing fluid and a preparing method for the fluid. The magnetic rheological polishing fluid comprises by volume magnetic particles 30-40%, pure water 45-55%, additive 5-10%, surface active agent 3-5% and polishing powder 5-8%. The preparing method comprises: the magnetic particles are surface cleaned and activated, the surfaces of the magnetic particles are treated by a hi-speed ball pulverizer. The magnetic rheological polishing fluid prepared by the invention is of hydrolyzation function. The preparing method is simple. The fluid is of a good resistance to settlement and conglobation, low zero-field viscosity, high polishing efficiency, good effect, long service life, and is applicable for optic polishing. The invention solves such problems of prior magnetic rheological polishing fluid as high viscosity, weak magnetizing strength, liable to caking, not stable in settling and conglobation, liable to rust, short service life and low efficiency. The magnetic rheological polishing fluid prepared by the invention is of high efficiency, and can facilitate the surface finish of a k9 glass to increase from 400nm to 0.6 nm in 30 minutes. The invention can be widely used in the super surface polishing of optic glass.

Description

technical field [0001] The invention belongs to magnetorheological fluid and a preparation method thereof, in particular to a magnetorheological fluid used for polishing optical parts and a preparation method thereof. Specifically, it is a novel magnetorheological polishing fluid and a preparation method thereof. Background technique [0002] As a smart material, magnetorheological fluid generally consists of three parts: magnetic solid particles, carrier liquid and stabilizer. Magnetorheological fluids with good performance can produce obvious magnetorheological effects under the action of a magnetic field, that is, to achieve fast and reversible conversion between liquid and solid, and this conversion is completed in milliseconds. During this process, the viscosity of magnetorheology remains continuous and changes steplessly. The entire conversion process is extremely fast and controllable, with extremely low energy consumption, and real-time active control can be realize...

AI Technical Summary

Problems solved by technology

[0003] Chinese Patent Publication No. CN1414075, published on April 30, 2003, the name of the invention is "stable magnetorheological fluid and its preparation method". The application discloses a stable magnetorheological fluid consisting of a suspension phase, Composed of carrier liquid, inorganic thixotropic agent and surfactant, although it has the characteristics of good anti-sedimentation effect and stability, but its service life is short, so it is not suitable for magnetorheological polishing

Chinese Patent Publication No. CN1632891A, published on June 29, 2005, the name of the invention is "Magnetorheological Fluid", which discloses a magnetorheological fluid, which is composed of carbonyl iron powder magnetic suspension phase and mineral oil carrier fluid , organic bentonite thixotropic agent, surfactant and solid lubricant, although it has good sedimentation stability and secondary suspension, the carrier liquid of the magnetorheological fluid is mineral oil, which is not suitable for optical polishing

[0004] The project team of this invention has searched domestic and foreign patent documents and published journal papers, and has not found any reports or documents closely related to the present invention.