Aqueous epoxy antistatic coating with nano-core-shell structural conductive polyaniline and preparation method thereof

A conductive polyaniline and nano-core-shell technology, applied in conductive coatings, epoxy resin coatings, coatings, etc., can solve the problems of polyaniline inability to melt, poor mechanical properties, and easy precipitation, etc., to achieve low cost and high conductivity Controllable, excellent antistatic effect

Inactive Publication Date: 2012-06-13
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large conjugation in the linear molecular chain The bond makes polyaniline extremely rigid, and polyaniline can neither melt nor dissolve, which makes it difficult to process and shape, and its mechanical properties are also very poor. If it is used as a water-based conductive coating, it will be very unstable and prone to precipitation. Hence the need for complex pretreatment of polyaniline

Method used

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  • Aqueous epoxy antistatic coating with nano-core-shell structural conductive polyaniline and preparation method thereof
  • Aqueous epoxy antistatic coating with nano-core-shell structural conductive polyaniline and preparation method thereof
  • Aqueous epoxy antistatic coating with nano-core-shell structural conductive polyaniline and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1: Preparation of a water-based epoxy antistatic coating containing nano-core-shell conductive polyaniline

[0027] Use epoxy resin (E-44) and polyethylene glycol (PEG-4000) as raw materials, control the molar ratio of epoxy resin and polyethylene glycol to be 1:1, and use the catalyst as AlCl 3 (the amount of catalyst used is 0.5% of the total mass of epoxy resin and polyethylene glycol), the reaction temperature is controlled at 100° C., and the reaction is carried out for 6 hours to prepare a self-made emulsifier for future use.

[0028] In a round bottom flask, dissolve 0.75g sodium dodecylsulfonate and 0.75g self-made emulsifier in 60g deionized water, and stir vigorously for 1 hour until completely dissolved. Add 7.5g of methyl methacrylate, 1.5g of butyl acrylate, and 0.375g of acrylic acid and continue magnetic stirring for 20 minutes to obtain a uniformly stirred pre-emulsion. Put the pre-emulsion into an ultrasonic cleaner filled with ice water and so...

Embodiment 2

[0030] Example 2: Preparation of a water-based epoxy antistatic coating containing nano-core-shell conductive polyaniline

[0031] Use epoxy resin (E-44) and polyethylene glycol (PEG-4000) as raw materials, control the molar ratio of epoxy resin and polyethylene glycol to be 1:1, and use the catalyst as AlCl 3 (the amount of catalyst used is 1% of the total mass of epoxy resin and polyethylene glycol), the reaction temperature is controlled at 120° C., and the reaction is carried out for 8 hours to prepare a self-made emulsifier for future use.

[0032] Dissolve 1.12g of sodium dodecylsulfonate and 1.12g of self-made emulsifier in 60g of deionized water in a round bottom flask, and stir vigorously for 1 hour until completely dissolved. Add 15 g of methyl methacrylate, 3 g of butyl acrylate, and 0.75 g of acrylic acid and continue magnetic stirring for 20 minutes to obtain a uniformly stirred pre-emulsion. Put the pre-emulsion into an ultrasonic cleaner filled with ice water and...

Embodiment 3

[0034] Example 3: Preparation of a water-based epoxy antistatic coating containing conductive polyaniline with nano-core-shell structure

[0035] Use epoxy resin (E-44) and polyethylene glycol (PEG-4000) as raw materials, control the molar ratio of epoxy resin and polyethylene glycol to be 1:1, and use the catalyst as AlCl 3 (the amount of catalyst used is 1% of the total mass of epoxy resin and polyethylene glycol), the reaction temperature is controlled at 120° C., and the reaction is carried out for 8 hours to prepare a self-made emulsifier for future use.

[0036] Dissolve 1.02g of sodium dodecylsulfonate and 1.22g of self-made emulsifier in 67.5g of deionized water in a round bottom flask, and stir vigorously for 1 hour until completely dissolved. Add 11.25g methyl methacrylate, 2.25g butyl acrylate, 0.45g acrylic acid and continue magnetic stirring for 20min to obtain a uniformly stirred pre-emulsion. Put the pre-emulsion into an ultrasonic cleaner filled with ice water...

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Abstract

The invention discloses an aqueous epoxy antistatic coating with nano-core-shell structural conductive polyaniline and a preparation method thereof. According to the preparation method, a self-made emulsifying agent is synthesized by taking epoxy resin and polyethylene glycol as raw materials; the nano-core-shell structural conductive polyaniline is synthesized by a miniemulsion method and takingthe emulsifying agent and sodium dodecyl sulfate as emulsifying agents; and the aqueous epoxy antistatic coating with the nano-core-shell structural conductive polyaniline is prepared by taking the core-shell structural polyaniline as a filler. The preparation method disclosed by the invention is simple in preparation process and low in cost, and the conductivity can be controllable through adjusting the quantity of addition of the polyaniline. The aqueous epoxy antistatic coating prepared by the preparation method disclosed by the invention has the advantages of high content of polyaniline, good chemical compatibility and remarkable antistatic property, and the dispersion and the stability of the polyaniline in an aqueous epoxy emulsion are excellent, so that the aqueous epoxy antistaticcoating with the nano-core-shell structural conductive polyaniline has an important industrial application value.

Description

technical field [0001] The invention relates to a water-based epoxy antistatic coating and a preparation method thereof, in particular to a water-based epoxy antistatic coating containing conductive polyaniline with a nano core-shell structure and a preparation method thereof. Background technique [0002] The current antistatic coatings mainly introduce antistatic additives into the coatings. Existing antistatic additives mainly include the following types: 1. Carbon-based (carbon black, graphite, etc.); 2. Metal powder or wire; The product and color are monotonous, and will greatly damage some mechanical properties of the material; the second category: ordinary metal powder or wire is easily oxidized during resin processing, and precious metals such as gold and silver are really usable, and often damage the mechanical properties of the material. and other properties; there is a deterioration problem during the third type of processing. Moreover, the affinity between the a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D179/02C09D5/24C08G59/54C08G73/02C08F220/14C08F220/18C08F220/06C08F2/24
Inventor 石元昌孙立波何召品李波徐晓脍
Owner SHANDONG UNIV
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