Preparation method of ultra-stable silicone oil-based magnetorheological fluid

A technology of magnetorheological fluid and silicone oil, which is applied in the field of preparation of silicone oil-based magnetorheological fluid, can solve the problems of cumbersome preparation process and achieve the effect of avoiding cumbersome steps and satisfying complex reaction conditions

Inactive Publication Date: 2021-03-26
江西赛诺得新材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The known oil-based magnetorheological fluids generally use silicone oil as the carrier fluid, and the invention patents "An oxidation-resistant dimethyl silicone oil-based magnetic fluid and its preparation method" (publication number: CN101599335A), "a stable silicone oil-based magnetic fluid Fluid and its preparation method” (publication number: CN1959872A), “an ethyl silicone oil-based magnetic liquid and its preparation method” (publication number: CN101225233A), the above methods for preparing oil-based magnetorheological fluids all need According to the preset reaction steps, the preparation process is completed step by step, and the reaction conditions required in the reaction process of different steps are different. Based on this, the preparation process of the existing oil-based magnetorheological fluid preparation method still relatively cumbersome

Method used

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  • Preparation method of ultra-stable silicone oil-based magnetorheological fluid
  • Preparation method of ultra-stable silicone oil-based magnetorheological fluid
  • Preparation method of ultra-stable silicone oil-based magnetorheological fluid

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preparation example Construction

[0032] The invention provides a method for preparing an ultra-stable silicone oil-based magnetorheological fluid, comprising:

[0033] Add magnetically sensitive particles and additives into the carrier liquid, stir and mix, and then carry out compound reaction to obtain oil-based magnetorheological fluid in one step;

[0034] Among them, the proportions of magnetic sensitive particles, carrier liquid and additives are respectively as follows:

[0035] Magnetic sensitive particles: 30-35 parts; carrier liquid: 50-70 parts; additives: 1-10 parts;

[0036] Wherein, the magnetic sensitive particle is Fe 3 0 4 Powder or alloy particle powder of Fe, Co and Ni, the average particle diameter of the magnetic sensitive particles is 1-10 microns;

[0037] The additives include antifriction and antiwear agents, antioxidants, thixotropic agents, antifreeze agents and surfactants;

[0038] The carrier liquid is silicone oil;

[0039] Wherein, the temperature for composite reaction aft...

Embodiment 1

[0051] With 3.0g (0.5%) molybdenum disulfide (friction-reducing anti-wear agent), 3.0g (0.5%) organophosphorus compound (oxidant inhibitor), 6g (1%) organic bentonite (thixotropic agent), 27g ( 4.5%) ethylene glycol, 3.0g (0.5%) alkoxy thiophosphate (surfactant) were added to 81g (13.5%) low-viscosity silicone oil (PA0170), stirred, 504g Fe 3 0 4 The powder was added to the silicone oil, stirred at a high speed of 1000rpm to obtain a suspension, and the above suspension was compounded and reacted at a temperature of 70°C for 2 hours to prepare an oil-based magnetorheological fluid.

[0052] Put the magnetorheological fluid prepared in this example into a 10ml measuring cylinder, let it settle at room temperature, and observe its sedimentation rate after 3 months. Among them, the sedimentation rate is determined according to the following method: after standing for 3 months of sedimentation, take the ratio of the volume of the supernatant to the total volume of the sample, multi...

Embodiment 2

[0055] 4.2g (0.7%) antifriction and antiwear agent molybdenum disulfide and graphite (1:1), 6g (1%) thixotropic agent organic bentonite, 15g (2.5%) ethylene glycol, 4.8g (0.8%) surface Activator alkoxythiophosphate was added to 45g (7.5%) low-viscosity silicone oil (PA0168) and stirred, 537g of Fe, Co and Ni alloy particle powder was added to the silicone oil, stirred at a high speed of 1000rpm to obtain a suspension, and The above suspension was compounded and reacted at a temperature of 70°C for 2 hours to prepare an oil-based magnetorheological fluid.

[0056] Put the magnetorheological fluid prepared in this example into a 10ml measuring cylinder, let it settle at room temperature, and observe its sedimentation rate after 3 months. Among them, the sedimentation rate is determined according to the following method: after standing for 3 months of sedimentation, take the ratio of the volume of the supernatant to the total volume of the sample, multiply it by 100%, and obtain ...

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Abstract

The invention provides a preparation method of an ultra-stable silicone oil-based magnetorheological fluid. Magnetically sensitive particles and an additive are mixed, contacted and compounded in a carrier liquid to prepare an oil-based magnetorheological fluid in one step; the magnetically sensitive particles used in the invention are Fe3O4 powder with specified particle size or alloy particle powder of Fe, Co and Ni, a carrier liquid is silicone oil, the additive comprising an antifriction and antiwear agent, an antioxidant, a thixotropic agent, an antifreezing agent and a surfactant and themagnetically sensitive particles are added into the silicone oil of the carrier liquid, and the reaction temperature and time are set, and the oil-based magnetorheological fluid is prepared in one step. By means of the method, the problems that in the oil-based magnetorheological fluid preparation process in the prior art, complex steps need to be conducted, and complex reaction conditions need to be met can be solved, and one-step preparation of the oil-based magnetorheological fluid is achieved.

Description

technical field [0001] The invention relates to the technical field of intelligent materials, in particular to a method for preparing an ultra-stable silicone oil-based magnetorheological fluid. Background technique [0002] Magneto-rheological fluid - a new type of intelligent material that has both the magnetism of magnetic solid substances and the fluidity of liquids. It can perform controllable, reversible and continuous rapid transitions between the properties of liquids and solids. It is widely used in medicine, aviation Aerospace, large-scale civil engineering, mechanical processing, automotive engineering and mechatronics and other fields. [0003] Oil magnetorheological fluid is mainly composed of three parts: magnetic particles, carrier fluid and additives. Generally, the magnetic particles selected are ferromagnetic substances, ferromagnetic substances and other soft magnetic substances. Oil-based magnetorheological fluid carrier fluids generally include silicon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04F16F9/53F16F9/32F16F9/36F16F9/42C10N40/14
CPCC10M169/045F16F9/535F16F9/3207F16F9/369F16F9/42C10M2201/062C10M2201/05C10M2229/0435C10M2201/066C10M2201/14C10M2207/022C10M2223/047C10M2201/041C10M2227/066C10M2201/105
Inventor 李琦
Owner 江西赛诺得新材料有限公司
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