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Continuous Phase Solution and Giant Electrorheological Fluid

A giant electrorheological fluid and solution technology, applied in the direction of lubricating compositions, etc., can solve the problems of low breakdown electric field, limitation of electrorheological fluid, and existence of air bubbles, and achieve stable particle settling and redispersibility, reduced settling velocity, The effect of improving wettability

Active Publication Date: 2022-04-26
宁波麦维科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN107057809A specifically relates to an electrorheological fluid with high wear resistance, which mixes organosilicon polyether into dimethyl silicone oil as an additive, and cooperates with the chain length of dimethyl silicone oil to greatly increase the yield stress of the electrorheological fluid and overcome The defect of low breakdown electric field of traditional electrorheological fluid
However, the anti-sedimentation performance of the electrorheological fluid in the prior art is not good, and there are air bubbles, and the ER performance is not good
Therefore, the application of electrorheological fluids is limited

Method used

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  • Continuous Phase Solution and Giant Electrorheological Fluid
  • Continuous Phase Solution and Giant Electrorheological Fluid
  • Continuous Phase Solution and Giant Electrorheological Fluid

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Experimental program
Comparison scheme
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Embodiment 1

[0052] This embodiment relates to a continuous phase solution, which is used to cooperate with the dispersed phase to form a giant electrorheological fluid in colloidal suspension. The main design idea is that the continuous phase solution is composed of silicone oil with hydrophobic groups, It is made of lubricating oil with sex group and mineral oil with hydrophobic group. Since the electrorheological fluid is composed of dispersed phase particles and continuous phase base liquid, it will be charged on the solid-liquid interface to form charged particles, and the charged particles will absorb counter ions in the continuous phase base liquid due to electrostatic force to form a double charge. layer structure. In the absence of an external electric field, the electric double layer structure is uniformly dispersed on the surface of the dispersed phase particles; under an external electric field, the originally uniformly distributed counter ion layer will be oriented in the dire...

Embodiment 2

[0075] This embodiment relates to a giant electrorheological fluid, which is based on the specific application of the continuous phase in the first embodiment. The giant electrorheological fluid has a dispersed phase, the continuous phase in the first embodiment, and polar molecular additives. The matching principle of each phase only needs to form a colloidal suspended giant electrorheological fluid.

[0076] In order to make the giant electrorheological fluid formed have better performance, in this embodiment, the volume ratio of the dispersed phase to the continuous phase solution is 0.5-0.7:1 or 0.6:1, for example, the volume ratio is set to 0.7:1 or 0.85: 1.

[0077] Among them, the dispersed phase adopts urea-wrapped nano-particle transition metal salt (wherein, the size of the nano-particle is 30-3000nm), in order to make the giant electrorheological fluid have better performance, the transition metal salt adopts the metal under the form of oxalate Salts, including but...

Embodiment 3

[0095] Based on the design idea of ​​the present invention, as follows, through the performance of the giant electrorheological fluid under the addition of lubricating oil and mineral oil, mineral oil and silicone oil under the condition of quantitative electrorheological fluid in different proportions, and the lubrication of mineral oil under quantitative conditions The performance of giant electrorheological fluids with different proportions of oil and silicone oil, and the performance of giant electrorheological fluids with different proportions of mineral oil and lubricating oil in silicone oil at the same mass fraction of mineral oil and lubricating oil were studied.

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Abstract

The invention provides a continuous phase solution, which is used to cooperate with a dispersed phase to make a colloidal suspension giant electrorheological fluid. The continuous phase solution is composed of silicone oil with hydrophobic groups and lubricating oil with hydrophilic groups. Oil and mineral oil with hydrophobic groups. Adopt the technical scheme of the present invention, since the continuous phase is made of silicone oil with hydrophobic groups, lubricating oil with hydrophilic groups and mineral oil with hydrophobic groups, the addition of lubricating oil and mineral oil improves the The wettability, polarity and viscosity of the continuous phase solution are combined with silicone oil to ensure that the continuous phase solution plays a better role in the giant electrorheological fluid, and at the same time, the nanoparticles in the dispersed phase in the giant electrorheological fluid are Under the action of an external electric field, the mutual traction force between the contact surfaces of two adjacent nanoparticles is slowed down, and the occurrence of bubbles caused by excessive mutual traction force is reduced; at the same time, the settling speed is reduced, and the particle settling property and redispersibility are more stable.

Description

technical field [0001] The invention relates to the technical field of electrorheological fluid materials, in particular to a continuous phase solution. At the same time, the invention also relates to a giant electrorheological fluid using the continuous phase solution. Background technique [0002] Electrorheological fluid is a general term for a type of liquid. The viscosity of the colloid will increase significantly with the increase of the electric field strength. When the electric field increases to a threshold value, the rheological properties of the colloid will change. This process is very rapid, typically within a few milliseconds, and the transition is reversible. The rheological properties of electrorheological fluid will change with the change of electric field. When no external electric field is applied, the fluid exhibits the characteristics of Newtonian fluid, but when the external electric field strength is high enough, it can be transformed into an "elasti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M171/00
CPCC10M171/001C10M2229/0415C10M2203/022C10M2207/282C10M2207/283C10M2207/288
Inventor 不公告发明人
Owner 宁波麦维科技有限公司