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A kind of fiber hybrid particle and polymer matrix composite material

A technology of hybrid particles and composite materials, applied in magnetic materials, fiber processing, nanotechnology for materials and surface science, etc., can solve problems such as difficult to control properties, difficult to obtain uniformly dispersed composite materials, easy winding, etc., to achieve The effect of convenient and effective performance

Active Publication Date: 2020-10-02
SHENZHEN INST OF ADVANCED TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is precisely because nanofibrous materials have a large aspect ratio and specific surface area that they are easily entangled when they are prepared into composite materials with polymers, especially when composited with nanoparticles by mechanical methods, it is difficult to obtain uniformly dispersed composite materials. performance is difficult to control

Method used

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  • A kind of fiber hybrid particle and polymer matrix composite material
  • A kind of fiber hybrid particle and polymer matrix composite material
  • A kind of fiber hybrid particle and polymer matrix composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] This embodiment provides a fiber hybrid particle loaded with nano-zinc oxide on the surface of CNT, which is prepared by the following steps:

[0049] Take 1g of carbon nanotube (CNT) and put it into 200mL of concentrated nitric acid and concentrated sulfuric acid (3:1 volume ratio) mixture, and stir at 65°C for 4 hours;

[0050] After the mixture is cooled, dilute it with deionized water, pour off the supernatant after the carbon nanotubes sink, and then dilute it several times to become neutral and then dry it to obtain acidified CNTs;

[0051] Disperse the acidified CNTs into 300mL of ZnO sol, and treat it by ball milling for 12 hours, then put the solution into a three-necked flask and slowly heat it to 180°C for 24 hours;

[0052] After cooling to room temperature, washing with absolute ethanol and deionized water several times, and drying at 100°C for at least 12 hours, the CNT-ZnO fiber hybrid particles can be obtained.

[0053] The CNT-ZnO fiber hybrid particle...

Embodiment 2

[0056] This embodiment provides a CNT surface loaded BaTiO 3 The fiber hybrid particles, which are prepared by the following steps:

[0057] Disperse 0.25g of CNT into 100mL of absolute ethanol, mix with 0.3mL of 28wt% concentrated ammonia water, and disperse by ultrasonic for 15min;

[0058] Slowly drop 0.75mL of tetrabutyl titanate into the mixture for about 5min, and stir at 45°C for 24h;

[0059] Wash with deionized water and absolute ethanol three times respectively, and dry at 100°C for 12 hours;

[0060] 500℃, sintered in air atmosphere for 2h to CNT-TiO 2 hybrid particles;

[0061] Add CNT-TiO after sintering at 500°C for 2 hours to the aqueous solution of barium source 2 , CNT-BaTiO can be obtained by heating in the reactor at 200°C for 12 hours 3 Fiber hybrid particles.

[0062] The CNT-BaTiO of this embodiment 3 Fiber hybrid particles, untreated CNTs, have no chemical bond with titanium dioxide / barium titanate, relying on the electronegativity difference of e...

Embodiment 3

[0066] This embodiment provides a copper nanowire surface loading TiO 2 Fiber hybrid particles, which are prepared by the following steps:

[0067] Take 0.1M Cu(NO 3 ) 2 Put 10ml, 200ml of 15M NaOH, and 1.5mL of ethylenediamine into a 500mL round bottom flask, heat up to 50°C, and stir at 700rpm;

[0068] After 5min, take 0.25mL of 35wt% N 2 h 4 Quickly added to the above solution;

[0069] After 2 minutes, add 150 mL of an aqueous solution containing 3 wt % polyvinylpyrrolidone (MW = 10000) and 1 wt % diethylhydroxylamine, and react for 1 hour;

[0070] Copper nanowires (CuNW) can be obtained by centrifugation. Finally, CuNW is dispersed in ethanol solution, and 0.5 mL of tetrabutyl titanate is slowly added dropwise, about 5 min, and stirred at 45 ° C for 24 h;

[0071] Washed three times with deionized water and absolute ethanol, dried at 100 °C for 12 h, and then sintered at 500 °C for 2 h in an air atmosphere to form CuNW-TiO 2 Fiber hybrid particles.

[0072] The ...

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Abstract

Provided are a fibre-hybridised particle and a polymer-based composite. The fibre-hybridised particle is composed of a nanofibre and nanoparticles supported on the surface of the nanofibre. The coverage rate of the nanoparticles on the surface of the nanofibre is 5%-100%. The diameter of the nanofibre is 50 nm-300 nm, and the length is 1 μm-100 μm. The particle size of the nanoparticles is equal to or smaller than the diameter of the nanofibre. The interfacial connection action between the nanofibre and the nanoparticles is physical adsorption or / and chemical bond combination. The polymer-based composite of the present invention comprises a polymer and the fibre-hybridised particles filled in the polymer. The fibre-hybridised particles solve the agglomeration and winding problems of granular and fibrous nanomaterials, and at the same time, provide multiple functions for the fibrous hybridised nanomaterial; and a polymer-based composite having controllable properties and multiple functions is obtained in a more convenient and effective manner.

Description

technical field [0001] The invention relates to a fiber hybrid particle and a polymer-based composite material composed of the fiber hybrid particle, belonging to the field of nanofiber materials. Background technique [0002] Nanomaterials are broadly defined as materials with at least one dimension in the nanoscale range (0.1nm-100nm) in three-dimensional space or composed of them as basic units. The particles of nanomaterials are extremely fine and the surface is extremely large. The percentage of atoms arranged in disorder on the particle surface is much larger than the percentage of atoms on the surface of large-scale materials, resulting in nanomaterials having characteristics that traditional solid materials do not have, such as volume effect and surface effect. , quantum size effect, macroscopic quantum tunneling effect and dielectric confinement effect, etc., so that nanomaterials have microwave absorption properties, high surface activity, strong oxidation, superpa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M11/36B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00D06M11/36H01F1/117H01M4/90Y02E60/50
Inventor 于淑会罗遂斌孙蓉王健
Owner SHENZHEN INST OF ADVANCED TECH
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