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Dopamine compound modified or coated nano particle modified polymer composite material and preparation method thereof

A nanoparticle and composite material technology, which is applied in the field of nanoparticle/polymer composite material preparation, can solve the problems of narrow range of modified objects, complex process, harsh reaction conditions, etc., and achieves easy-to-operate preparation methods, simple preparation methods, and comprehensive performance. Improved effect

Active Publication Date: 2016-03-30
WUHAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the high surface activity and surface energy of nanoparticles, it is easy to agglomerate in polymers, which greatly affects the performance of inorganic-organic nanocomposites. An important way to solve these problems is to modify their surfaces.
However, the surface modification of nanoparticles and the preparation of inorganic-organic nanocomposites in traditional methods present many difficulties, such as harsh reaction conditions, high equipment costs, complex processes and high requirements for materials themselves, and the dispersion of nanoparticles in polymers. The time is short, the range of modified objects is narrow, and it is difficult to scale production, which greatly limits the industrial application of inorganic-organic nanocomposites

Method used

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  • Dopamine compound modified or coated nano particle modified polymer composite material and preparation method thereof
  • Dopamine compound modified or coated nano particle modified polymer composite material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0024] A dopamine compound modified or encapsulated nanoparticle modified polymer composite material is prepared by the following method: (1) 1 part (parts by mass) of ZrO 2 Nanoparticles are dispersed in the Tris-HCl buffer solution of pH=8.5 under the effect of ultrasonic / mechanical stirring (ultrasonic power is 2000W, ultrasonic frequency is 1MHz), then add 0.1 part of dopamine, at room temperature (25 ℃ ), ultrasonic / mechanical stirring (the power of ultrasonic is 2000W, the frequency of ultrasonic is 1MHz) to react for 24h, filter, wash, and dry to obtain the nano ZrO modified or encapsulated by dopamine 2 . (2) Dissolve 100 parts of epoxy resin in an organic solvent, add dopamine-modified or encapsulated nano-ZrO 2 , ultrasonic / stirring (ultrasonic power is 2000W, ultrasonic frequency is 1MHz) treatment for 0.5h, at 60°C, vacuum drying, removal of organic solvent, can be modified or encapsulated nano-ZrO 2 Modified epoxy resin compound.

[0025] In this example, the u...

Embodiment 2

[0027] A dopamine compound modified or encapsulated nanoparticle-modified polymer composite material is prepared by the following method: (1) 1 part of ZnO is stirred under ultrasonic / mechanical stirring (ultrasonic power is 2000W, ultrasonic frequency is 1MHz) Disperse in Tris-HCl buffer solution with pH = 8.5 under action, then add 10 parts of dopamine, at room temperature (25°C), ultrasonic / mechanical stirring (ultrasonic power is 2000W, ultrasonic frequency is 1MHz) and react for 12h , filtered, washed, and dried to obtain dopamine-modified or encapsulated nano-ZnO. (2) Dissolve 100 parts of epoxy resin in an organic solvent, add dopamine-modified or encapsulated nano-ZnO, and ultrasonically / stirrer (ultrasonic power is 2000W, ultrasonic frequency is 1MHz) for 0.5h, at 60°C Under vacuum drying, the organic solvent is removed, and the nano-ZnO modified epoxy resin composite material modified or wrapped by dopamine is obtained.

Embodiment 3

[0029] A dopamine compound modified or encapsulated nanoparticle-modified polymer composite material is prepared by the following method: (1) 1 part of SiO 2 Under the action of ultrasonic / mechanical stirring (the power of ultrasonic is 2000W, the frequency of ultrasonic is 1MHz), it is dispersed in the Tris-HCl buffer solution with pH=8.5, then add 10 parts of dopamine, at room temperature (25°C), Ultrasonic / mechanical stirring (ultrasonic power is 2000W, ultrasonic frequency is 1MHz) for 12h, filtered, washed and dried to obtain dopamine-modified or encapsulated nano-SiO 2 . (2) Dissolve 100 parts of epoxy resin in an organic solvent, add dopamine-modified or encapsulated nano-SiO 2 , ultrasonic / stirring (ultrasonic power is 2000W, ultrasonic frequency is 1MHz) treatment 0.5h, at 60 ℃ temperature, remove organic solvent, obtain dopamine-modified or encapsulated nano-SiO 2 Modified epoxy resin composites.

[0030] Epoxy resin, nano-ZnO modified epoxy resin composite, nano-...

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Abstract

The invention belongs to the field of nano particle or polymer composite material preparation and particularly relates to a dopamine compound modified or coated nano particle modified polymer composite material and a preparation method thereof. The composite material is composed of nano particles with surfaces modified or coated by dopamine compound and a high molecular polymer matrix. The nano particles with the surfaces modified or coated by the dopamine compound are uniformly scattered in the high molecular polymer matrix. According to the dopamine compound modified or coated nano particle modified polymer composite material, the dopamine compound modified or coated nano particles are utilized, the dopamine compound can aggregate spontaneously on the surface of a nano particle material to form a thin film to enable the surfaces of the nano particles to be connected with a function group such as hydroxyl and amidogen with strong activity, the compatibility of the nano particles in the high molecular polymer can be increased, and the dopamine compound is favorable for causing the nano particles and the high molecular polymer matrix to further generate secondary reaction. The dispersibility of the nano particles is good, and the stability is good in the dopamine compound modified or coated nano particle modified polymer composite material, and the comprehensive performance of the composite material can be improved remarkably.

Description

technical field [0001] The invention belongs to the field of nanoparticle / polymer composite material preparation, and in particular relates to a dopamine compound-modified or wrapped nanoparticle-modified polymer composite material and a preparation method thereof. Background technique [0002] Inorganic-organic nanocomposites refer to composite materials in which the size of the dispersed phase has at least one dimension smaller than 100nm. This composite material is different from the conventional inorganic filler / polymer material composite system. It is not a simple mixture of inorganic phase and organic phase, but the two phases are composited at the nanoscale, and there is a strong interaction between the two phase interfaces ( coordination bonds, covalent bonds, electrostatic attraction) or weak interactions (hydrogen bonds, charge transfer interactions). Therefore, inorganic-organic nanocomposites not only have the characteristics of nanometer size effect, surface ef...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08L79/08C08L83/04C08L27/12C08L75/02C08K9/04C08K9/10C08K3/22C08K3/36C08K3/34C08K3/04C08K3/30
Inventor 黄进张清清车圆圆夏涛孙应郭飞石晓敏刘扬
Owner WUHAN UNIV OF TECH
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