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Magnetic glue

A technology of magnetic glue and magnetic powder, which is applied in the field of magnetic glue, can solve the problems of magnetic powder agglomeration, etc., and achieve the effects of small particle wear, low temperature rise, and low manufacturing and use costs

Inactive Publication Date: 2010-01-20
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the purpose of the present invention is to provide a magnetic glue, which has the advantages of stable output torque, low temperature rise, large slip power, small powder wear and long service life when used in mechanical equipment, and avoids the magnetic powder in the prior art. The problem of agglomeration, and there will be no precipitation and leakage, it can be widely used in the field of mechanical transmission and braking and replace the existing magnetic powder and magnetorheological fluid

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The magnetic powder in this embodiment is composed of carbonyl iron powder and nanocrystalline soft magnetic alloy, wherein the weight percentage of carbonyl iron powder in the magnetic glue is 40%; the weight percentage of nanocrystalline soft magnetic alloy in the magnetic glue is 14 %; the weight percentage of fatty acid metal salt in the magnetic glue is 15%; the weight percentage of polyolefin oil in the magnetic glue is 21%; the nano whiskers are made of silicon carbide nano whiskers and zinc oxide nano whiskers The weight percentage of the mixture in the magnetic glue is 9%; the weight percentage of silicone oil in the magnetic glue is 1%;

[0015] The magnetic powder can use all the magnetic powders applied in the field of mechanical transmission and braking in the prior art, which can achieve the purpose of the present invention. However, the magnetic powder material and ratio in this embodiment are applied to the magnetic glue of the present invention without fluc...

Embodiment 2

[0018] In this embodiment, the magnetic powder is composed of carbonyl iron powder and nanocrystalline soft magnetic alloy. The weight percentage of carbonyl iron powder in the magnetic glue is 41%; the weight percentage of nanocrystalline soft magnetic alloy in the magnetic glue is 15%. %; The weight percentage of fatty acid metal salt in the magnetic glue is 15.5%; the weight percentage of polyolefin oil in the magnetic glue is 20%; the nano whiskers are made of silicon carbide nano whiskers and zinc oxide nano whiskers The weight percentage of the mixture in the magnetic glue is 8%; the weight percentage of silicone oil in the magnetic glue is 0.5%;

[0019] The magnetic powder can use all the magnetic powders used in the field of mechanical transmission and braking in the prior art to achieve the purpose of the present invention; the colloidal fatty acid metal salt can use all fatty acid metal salts or mixtures with colloidal properties as the colloidal support It is used to ...

Embodiment 3

[0022] The magnetic powder in this embodiment is composed of carbonyl iron powder and nanocrystalline soft magnetic alloy, wherein the weight percentage of carbonyl iron powder in the magnetic glue is 39%; the weight percentage of nanocrystalline soft magnetic alloy in the magnetic glue is 13 %; The weight percentage of fatty acid metal salt in the magnetic glue is 14.5%; the weight percentage of polyolefin oil in the magnetic glue is 22%; the nano whiskers are made of silicon carbide nano whiskers and zinc oxide nano whiskers The weight percentage of the mixture in the magnetic glue is 10%; the weight percentage of silicone oil in the magnetic glue is 1.5%;

[0023] The magnetic powder can use all the magnetic powders used in the field of mechanical transmission and braking in the prior art to achieve the purpose of the present invention; the colloidal fatty acid metal salt can use all fatty acid metal salts or mixtures with colloidal properties as the colloidal support It is us...

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PUM

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Abstract

The invention discloses magnetic glue comprising magnetic powder, colloid fatty acid metal salt and polyolefin oil, wherein the colloid fatty acid metal salt is used as a glue shape bracket used for dispersing and supporting the uniform distribution of the magnetic powder in space, and the polyolefin oil is used as a dispersant used for forming a film wrapping the magnetic powder. When being in a free state, the magnetic glue can keep the original shape; when bearing shearing force, the magnetic glue also can change the self into an arbitrary shape; when working normally, the magnetic glue does not prohibit the relatively free rotation of a relative movement pair; when coils are electrified, the magnetic glue can generate resistance moment on a rotor as the magnetic powder, and the resistance moment and current in the coils are in direct proportion; and the invention has the advantages of stable output moment, low temperature rise, large slippage power, small abrasion of powder particles, long service life and the like and can be applied to a magnetic glue brake, a magnetic glue stepless speed variator, a magnetic glue clutch, a magnetic glue braking device and a magnetic glue damper, and has no the problems of agglomeration, rusting, precipitation and leakage in the use process.

Description

Technical field [0001] The invention relates to a functional material, in particular to a magnetic glue. Background technique [0002] Magnetic powder is a high-permeability functional material that uses excitation current as a control method to form electromagnetic devices such as magnetic powder brakes, magnetic powder continuously variable transmissions, magnetic powder clutches, magnetic powder dampers, and magnetic powder brakes. Its working principle is to generate a magnetic field after turning on the DC power supply. The magnetic powder of the working medium forms a magnetic powder chain under the action of the magnetic force lines to form a braking torque. This kind of magnetic powder device has fast response, good linearity, constant control torque, stable operation and simple structure. , No noise, convenient maintenance, fast braking, tension control, position control, speed control, microcomputer control and other functions, so it is widely used in various industries...

Claims

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Application Information

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IPC IPC(8): H01F1/26B22F1/02
Inventor 王家序梁锡昌吕宏展
Owner CHONGQING UNIV
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