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Preparation method of high-performance magnetorheological nano composite polymer gel

A polymer gel and nanocomposite technology, which is applied in the field of high-performance magnetorheological nanocomposite polymer gel preparation, can solve the problem that mechanical properties and magnetorheological properties cannot be improved at the same time, and the dispersibility of magnetorheological polymer gels cannot be improved at the same time. , poor stability and other problems, to achieve the effects of good controllability of the three-dimensional network structure, increased interaction force, improved stability and dispersion

Active Publication Date: 2016-11-16
ZHONGBEI UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention solves the problem that the existing magnetorheological polymer gel has poor dispersion and stability, and the mechanical properties and magnetorheological properties cannot be improved at the same time, and provides a gel with good dispersion and stability, high magnetorheological properties and mechanical properties Preparation method of magnetorheological nanocomposite polymer gel

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  • Preparation method of high-performance magnetorheological nano composite polymer gel
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  • Preparation method of high-performance magnetorheological nano composite polymer gel

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Embodiment 1

[0020] Embodiment 1: A method for preparing a magnetorheological nanocomposite polymer gel, comprising the following steps:

[0021] 1) Co-precipitation method to prepare Fe 3 o 4 Nano magnetic particle stable dispersion:

[0022] 3.58g of FeCl 2 • 4H 2 O, 6.08g of FeCl 3 •6H 2 O and Fe 2+ Salt and Fe 3+ Dissolve 0.5wt% surfactant dopamine hydrochloride in 90ml of deionized water based on the total mass of the salt; after stirring and dissolving evenly at a speed of 500r / min at 50.0°C, slowly add Fe 2+ Salt and Fe 3+NaOH solution with a volume ratio of 1:1 and a concentration of 1.5 mol / L in saline solution, and then continue to react for 90 minutes to form a stable black dispersion liquid; the stable black dispersion liquid is separated by magnetic separation method to separate magnetic particles, ultrasonically dispersed, and then Magnetic separation, repeated 3 times, redispersed into a certain amount of deionized water to form Fe 3 o 4 Nanomagnetic particles wit...

Embodiment 2

[0027] Embodiment 2: A method for preparing a magnetorheological nanocomposite polymer gel, comprising the following steps:

[0028] 1) Co-precipitation method to prepare Fe 3 o 4 Nano magnetic particle stable dispersion:

[0029] 3.58g of FeCl 2 • 4H 2 O, 7.3g of FeCl 3 •6H 2 O and Fe 2+ Salt and Fe 3+ 2wt% surfactant ethylenediaminetetraacetic acid of the total mass of the salt was dissolved in 90ml of deionized water; after stirring and dissolving evenly with mechanical stirring at a speed of 500r / min and at 50.0°C, slowly drop it at a rate of 1 drop / second Add Fe 2+ Salt and Fe 3+ NaOH solution with a volume ratio of 1:1 and a concentration of 1.5 mol / L in saline solution, and then continue to react for 90 minutes to form a stable black dispersion liquid; the stable black dispersion liquid is separated by magnetic separation method to separate magnetic particles, ultrasonically dispersed, and then Magnetic separation, repeated 3 times, redispersed into a certain ...

Embodiment 3

[0034] Embodiment 3: A method for preparing a magnetorheological nanocomposite polymer gel, comprising the following steps:

[0035] 1) Co-precipitation method to prepare Fe 3 o 4 Nano magnetic particle stable dispersion:

[0036] 3.58g of FeCl 2 • 4H 2 O, 7.3g of FeCl 3 •6H 2 O and Fe 2+ Salt and Fe 3+ The surfactant polyvinyl alcohol of 2wt% of salt total mass is dissolved in a certain amount of deionized water, and the consumption of described deionized water guarantees Fe 2+ Salt and Fe 3+ The total concentration of the brine solution is 5.0wt%; after the mechanical stirring at a speed of 500r / min and the temperature of 50.0°C stirs and dissolves evenly, slowly add Fe at a rate of 1 drop / second 2+ Salt and Fe 3+ NaOH solution with a volume ratio of 1:1 and a concentration of 1.5 mol / L in saline solution, and then continue to react for 90 minutes to form a stable black dispersion; use magnetic separation to separate the magnetic particles from the stable black dis...

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Abstract

The invention relates to the technical field of magnetorheological materials, in particular to a preparation method high-performance magnetorheological nano composite polymer gel, and solves the problems that existing gel is poor in dispersity and stability, and the mechanical performance and magnetorheological performance of the gel cannot be increased at the same time. According to the technical scheme, the preparation method includes: dissolving FeCl2-4H2O, FeCl3-6H2O and surfactant into water; adding NaOH, performing magnetic separation ultrasonic dispersing, and dispersing into deionized water; adding hectorite into the deionized water, and adding polymer monomer; adding initiator and catalyst, and adding dispersing liquid; vacuumizing, and performing reaction in a sealed manner. The preparation method has the advantages that nano magnetic particles do not settle, the interaction force between the magnetic particles and a gel polymer matrix is increased, and stability and dispersity are increased; a three-dimensional cross-linked network structure is formed, and large filling quantity and good controllability are achieved; the high-performance magnetorheological nano composite polymer gel is good in mechanism performance and magnetorheological performance and high in tensile strength, elongation at break, magnetorheological effect and relative magnetorheological effect.

Description

technical field [0001] The invention relates to the technical field of magnetorheological materials, in particular to a method for preparing a high-performance magnetorheological nanocomposite polymer gel. Background technique [0002] Magneto-rheological materials are a new type of functional materials. The internal magnetic particles are magnetized under an external magnetic field to generate interaction forces. When the material is deformed, these magnetic forces form a reverse torque inside it, causing the modulus and damping of the magnetorheological material. This effect is called the magnetorheological effect, which has the characteristics of continuous magnetic field controllability, fast magnetic response speed, and good reversibility. It has broad application prospects in aerospace, information, machinery and other fields. At present, there are three main types of magnetorheological materials: (1) magnetorheological fluid, (2) magnetorheological elastomer, and (3) ...

Claims

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Application Information

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IPC IPC(8): C08F120/56C08F220/06C08F220/58C08F220/56C08K3/22C08K3/34C08J3/075
CPCC08F120/56C08F220/06C08J3/075C08J2333/02C08J2333/26C08K3/22C08K3/34C08K2003/2275C08K2201/01C08L33/26C08L33/02C08F220/585C08F220/56
Inventor 刘亚青孙友谊王妍赵贵哲
Owner ZHONGBEI UNIV
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