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Antistatic agent made from silver nanowire and functional carbon nano tube (CNT) and preparation method

A carbon nanotube and antistatic agent technology, applied in the field of silver nanowire functionalized carbon nanotube antistatic agent, can solve the problems of reducing the addition amount of carbon nanotubes, poor dispersibility, influence, etc., to improve the synergistic enhancement effect, overcome the The effect of high contact resistance

Active Publication Date: 2013-02-20
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The conductivity of carbon nanotubes is similar to that of graphite, and its outstanding aspect ratio makes it more conducive to the formation of a chain network structure in the continuous phase of the matrix than conductive carbon black when added to the matrix, but its main disadvantage is that it is in the polymer The dispersion in the matrix is ​​poor, and organic modification of the surface is required to improve the surface polarity, improve the dispersion and interfacial bonding force in the polymer matrix, and give full play to its reinforcing and functional double-layer effect
Another disadvantage of carbon-based antistatic agents is that when the color of the composite material product meets the functional requirements, the amount of addition will affect the natural color of the material. Therefore, it is necessary to reduce the amount of carbon nanotubes added on the premise of ensuring the functionality of the matrix material.

Method used

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  • Antistatic agent made from silver nanowire and functional carbon nano tube (CNT) and preparation method
  • Antistatic agent made from silver nanowire and functional carbon nano tube (CNT) and preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0016] The first step: disperse the acidified carbon nanotubes into N,N dimethylformamide and sonicate for 2 hours, then add thioglycolic acid and catalytic equivalent of 4-dimethylaminopyridine, react at 85°C for 24 hours, then filter, wash and dry to obtain mercapto Functionalized carbon nanotubes, wherein acidified carbon nanotubes: N,N dimethylformamide: thioglycolic acid = 1g: 150ml: 0.1g.

[0017] Step 2: Ultrasonic disperse the mercaptolated carbon nanotubes into ethylene glycol, add a solution of platinous chloride ethylene glycol with a platinum ion concentration of 1 mg / L, raise the temperature to 150°C and react for 10 minutes to obtain platinum seed crystals Carbon nanotubes, wherein thiolated carbon nanotubes: ethylene glycol: platinous chloride ethylene glycol solution = 100mg: 100ml: 5ml.

[0018] Step 3: Add 0.1mol / L silver nitrate and 0.6mol / L polyvinylpyrrolidone ethylene glycol solution at the end of the reaction in the previous step, raise the temperature t...

Embodiment 2

[0020] Step 1: Disperse 1g of acidified carbon nanotubes into 150ml of N,N dimethylformamide and sonicate for 2h, then add 1g of p-mercaptobenzoic acid and catalytic equivalent of 4-dimethylaminopyridine, react at 85°C for 24h and pump Filter, wash and dry to obtain mercapto-functionalized carbon nanotubes.

[0021] Step 2: ultrasonically disperse 100 mg of mercaptolated carbon nanotubes into 100 ml of propylene glycol, add 10 ml of platinous chloride propylene glycol solution with a platinum ion concentration of 1 mg / L, and heat up to 150 ° C for 10 minutes to obtain carbon loaded with platinum seeds. nanotube.

[0022] Step 3: Add 10ml of 0.1mol / L silver nitrate and 0.6mol / L propylene glycol solution of polyvinylpyrrolidone at the end of the reaction in the previous step, raise the temperature to 160°C, and react for 2 hours. After the reaction, centrifuge, wash and dry to obtain carbon nano tube composites of silver nanowires grown in situ.

Embodiment 3

[0024] Step 1: Disperse 1g of acidified carbon nanotubes into 150ml of N,N dimethylformamide and sonicate for 2 hours, then add 0.1g of mercaptoethylamine, react at room temperature for 24 hours, then filter, wash and dry to obtain thiol-functionalized carbon nanotubes Tube.

[0025] Step 2: ultrasonically disperse 100mg of mercaptolated carbon nanotubes into 100ml of ethylene glycol, add 10ml of chloroplatinic acid ethylene glycol solution with a platinum ion concentration of 1mg / L, and heat up to 150°C for 10 minutes to obtain loaded platinum crystals species of carbon nanotubes.

[0026] Step 3: Add 0.1mol / L silver nitrate and 1mol / L propylene glycol solution of sodium lauryl sulfate to 10ml respectively at the end of the reaction in the previous step, heat up to 180°C, react for 1h, centrifuge, wash and dry after the reaction to obtain Composites of carbon nanotubes grown in situ with silver nanowires.

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Abstract

The invention provides an antistatic agent made from a silver nanowire and a functional CNT and a preparation method, and belongs to the technical field of antistatic agents. The silver nanowire grows in situ on the surface-thiolated CNT through a platinum seed crystal. The method includes that thiolation modification on the surface of the CNT is performed, the platinum seed crystal is anchored on the surface of the CNT according to coordination of sulfydryl, and the silver nanowire grows in situ through the platinum seed crystal on the surface of the CNT to prepare the CNT and silver nanowire composite antistatic agent. The antistatic agent is small in amount, and the defect of phase splitting of different components caused by blending modification of the CNT and the silver nanowire is overcome.

Description

technical field [0001] The invention relates to a silver nanowire functionalized carbon nanotube antistatic agent and a method for in-situ growth of silver nanowires by anchoring platinum seeds on the surface of the carbon nanotube, belonging to the technical field of antistatic agents. Background technique [0002] In recent years, with the wide application of polymer materials in various fields, more and more requirements have been put forward for the functionality of polymer materials. Among them, general engineering materials such as polyimide (PI), polycarbonate (PC ), polyetherimide (PEI), polyetheretherketone (PEEK), due to their excellent mechanical properties and heat resistance, are widely used in medical equipment, chemical equipment, electronic devices and automated parts. However, as a poor conductor of electricity, when the material is rubbed or the charge generated by the electronic device in the use environment cannot be leaked in time, it will generate stati...

Claims

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Application Information

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IPC IPC(8): C08K9/04C08K9/02C08K7/00C08K3/04B22F9/24B82Y40/00C01B31/02C01B32/168
Inventor 付海杜中杰张晨邹威励杭泉
Owner BEIJING UNIV OF CHEM TECH
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