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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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 improv

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Embodiment 1: The preparation method of magnetorheological nanocomposite polymer gel includes the following steps:

[0021] 1) Preparation of Fe by co-precipitation method 3 O 4 Nano magnetic particle stable dispersion:

[0022] 3.58g of FeCl 2 • 4H 2 O, 6.08g FeCl 3 • 6H 2 O and Fe 2+ Salt and Fe 3+ 0.5wt% of the total weight of the salt, as the surfactant dopamine hydrochloride, is dissolved in 90ml of deionized water; after the mechanical stirring at a speed of 500r / min and stirring at 50.0℃, the Fe is slowly added dropwise at a rate of 1 drop / sec. 2+ Salt and Fe 3+ The volume ratio of the saline solution is 1:1, the NaOH solution with the concentration of 1.5mol / L, and the reaction is continued for 90 minutes to form a stable black dispersion; the stable black dispersion is separated by magnetic separation method to separate the magnetic particles, ultrasonically dispersed, and then Magnetic separation, after repeating 3 times, redisperse into a certain amount of deionize...

Example Embodiment

[0027] Embodiment 2: The preparation method of magnetorheological nanocomposite polymer gel includes the following operation steps:

[0028] 1) Preparation of Fe by co-precipitation method 3 O 4 Nano magnetic particle stable dispersion:

[0029] 3.58g of FeCl 2 • 4H 2 O, 7.3g FeCl 3 • 6H 2 O and Fe 2+ Salt and Fe 3+ The surface active agent ethylenediaminetetraacetic acid of 2wt% of the total mass of the salt is dissolved in 90ml of deionized water; after the mechanical stirring at a speed of 500r / min and the stirring at 50.0℃ are uniformly dissolved, slowly drip at a rate of 1 drop / sec. Add Fe 2+ Salt and Fe 3+ The volume ratio of the saline solution is 1:1, the NaOH solution with the concentration of 1.5mol / L, and the reaction is continued for 90 minutes to form a stable black dispersion; the stable black dispersion is separated by magnetic separation method to separate the magnetic particles, ultrasonically dispersed, and then Magnetic separation, after repeating 3 times, redisp...

Example Embodiment

[0034] Embodiment 3: The preparation method of magnetorheological nanocomposite polymer gel includes the following steps:

[0035] 1) Preparation of Fe by co-precipitation method 3 O 4 Nano magnetic particle stable dispersion:

[0036] Put 3.58g of FeCl 2 • 4H 2 O, 7.3g FeCl 3 • 6H 2 O and Fe 2+ Salt and Fe 3+ The surface active agent polyvinyl alcohol of 2wt% of the total mass of the salt is dissolved in a certain amount of deionized water, and the amount of the deionized water ensures that 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 stirring at 50.0℃ dissolve evenly, the Fe is slowly added dropwise at a rate of 1 drop / sec. 2+ Salt and Fe 3+ The volume ratio of saline solution is 1:1, the NaOH solution with the concentration of 1.5mol / L, and the reaction is continued for 90 minutes to form a stable black dispersion; the stable black dispersion is separated by magnetic separation method to ...

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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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