Carbon nanotube grafted polyvinyl chloride composite material with self-cleaning, anti-icing, photo-thermal and deicing characteristics and preparation method thereof

A carbon nanotube and polyvinyl chloride technology, applied in chemical instruments and methods, other chemical processes, etc., to achieve the effects of low production cost, easy processing and molding, and low content

Inactive Publication Date: 2020-01-21
HEBEI NORTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There is no real material with a surface that is perfectly resistant to moisture and ice buildup in cold environments

Method used

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  • Carbon nanotube grafted polyvinyl chloride composite material with self-cleaning, anti-icing, photo-thermal and deicing characteristics and preparation method thereof
  • Carbon nanotube grafted polyvinyl chloride composite material with self-cleaning, anti-icing, photo-thermal and deicing characteristics and preparation method thereof
  • Carbon nanotube grafted polyvinyl chloride composite material with self-cleaning, anti-icing, photo-thermal and deicing characteristics and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Preparation of sodium carboxylated carbon nanotubes:

[0042] Using glassware as a reaction vessel, add a metered amount of virgin carbon nanotubes to a mixed acid of concentrated sulfuric acid and concentrated nitric acid to purify carboxylation under 500w ultrasound. The ultrasonic temperature is 30℃ and the ultrasonic time is 10h; the mixed acid and carbon nanotubes are separated by centrifugation Afterwards, the carbon nanotubes were washed with 95% ethanol for several times until the pH was 6.5-7.0; sodium hydroxide and deionized water were added to the obtained carboxylated carbon nanotubes, and the ultrasonic dispersion and sodiumization were continued. The ultrasonic power was 500w. The ultrasonic temperature is 30°C, and the ultrasonic time is 5 minutes; the carbon nanotubes obtained by centrifugation are washed with 95% ethanol until the pH is 7.0-7.5, dried at 110°C, and ground to obtain sodicated carboxylated carbon nanotubes;

[0043] The dosage of each ingr...

Embodiment 2

[0055] (1) Preparation of sodium carboxylated carbon nanotubes:

[0056] Using glassware as the reaction vessel, add the metered raw carbon nanotubes to the mixed acid of concentrated sulfuric acid and concentrated nitric acid to purify the carboxylation under 2000w ultrasound, the ultrasonic temperature is 40℃, the ultrasonic time is 8h; the mixed acid and carbon nanotubes are separated by centrifugation Afterwards, the carbon nanotubes were washed with 95% ethanol for several times until the pH was 6.5-7.0; sodium hydroxide and deionized water were added to the obtained carboxylated carbon nanotubes, and the ultrasonic dispersion and sodiumization were continued, the ultrasonic power was 2000w, The ultrasonic temperature is 40°C, and the ultrasonic time is 2 minutes; the carbon nanotubes obtained by centrifugation are washed with 95% ethanol until the pH is 7.0-7.5, dried at 110°C, and ground to obtain sodiumized carboxylated carbon nanotubes;

[0057] The dosage of each ingredie...

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Abstract

The invention provides a carbon nanotube grafted polyvinyl chloride composite material with self-cleaning, anti-icing and photo-thermal deicing characteristics and a preparation method thereof. The method comprises the following steps: firstly, carrying out ultrasonic purification treatment on primary carbon nanotubes by adopting mixed acid; carrying out sodium salinization on the obtained purified carboxylated carbon nanotubes to obtain a sodium carboxylated carbon nanotube; carrying out an esterification reaction on the carbon nanotubes and a halogenated hydrocarbon modifier containing double bonds under the action of a phase transfer agent to prepare modifiable carbon nanotubes with reaction activity, and carrying out suspension emulsion graft polymerization on the modifiable carbon nanotubes and vinyl chloride under the action of an initiator to finally prepare the composite material. The composite material has very high light absorptivity, can effectively convert light into heat,has a surface self-lubricating property, realizes perfect combination of ice thinning and photo-thermal deicing, can delay icing and easily remove ice, is easy to process and form, has small amount ofcarbon nanotubes, is low in production cost, and is easy to realize large-scale production.

Description

Technical field [0001] The invention relates to a low-cost carbon nanotube grafted polyvinyl chloride composite material with self-cleaning, anti-icing and photothermal deicing characteristics and a preparation method thereof. Background technique [0002] The accumulation of ice may cause serious problems to facilities, damage aircraft combat performance, damage optical lenses, and affect energy transmission systems, power lines, wind turbines, ships, highways, and building construction. Therefore, anti-icing or deicing measures must be taken to reduce the negative effects of icing. [0003] Among the different methods, spraying deicing agents is a very popular method, but this method will cause more and more environmental problems. The sliding or rebound of water droplets on the surface of the superhydrophobic material can prevent the formation of ice crystals before freezing. This method can effectively prevent freezing in the initial stage of ice formation or in a low humidity...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F292/00C08F214/06C08L51/10C09K3/18
CPCC08F292/00C08L51/10C09K3/18C08F214/06
Inventor 沈小宁袁立焕庚丽丽魏珍王永利
Owner HEBEI NORTH UNIV
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