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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 that polyaniline cannot be melted, is difficult to process, and is prone to precipitation, and achieves low cost and high conductivity. Controllable, excellent antistatic effect

Inactive Publication Date: 2013-09-04
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

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Effect test

Embodiment 1

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

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

[0028] In a round-bottomed flask, dissolve 0.75 g of sodium dodecyl sulfonate and 0.75 g of a homemade emulsifier in 60 g of deionized water, and stir vigorously for 1 hour until completely dissolved. 7.5 g of methyl methacrylate, 1.5 g of butyl acrylate, and 0.375 g of acrylic acid were added with continuous magnetic stirring for 20 min to obtain a uniformly stirred pre-emulsion. The pre-emulsion was put into an ultrasonic...

Embodiment 2

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

[0031] Using epoxy resin (E-44) and polyethylene glycol (PEG-4000) as raw materials, the molar ratio of epoxy resin and polyethylene glycol is controlled to be 1:1, and the catalyst is AlCl 3 (The amount of the catalyst is 1% of the total mass of the 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 use.

[0032] In a round-bottomed flask, 1.12 g of sodium dodecyl sulfonate and 1.12 g of a homemade emulsifier were dissolved in 60 g of deionized water, and vigorously stirred 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 min to obtain a uniformly stirred pre-emulsion. The pre-emulsion was put into an ultrasonic cleane...

Embodiment 3

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

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

[0036] In a round-bottom flask, 1.02 g of sodium dodecyl sulfonate and 1.22 g of a homemade emulsifier were dissolved in 67.5 g of deionized water, and vigorously stirred for 1 hour until completely dissolved. 11.25 g of methyl methacrylate, 2.25 g of butyl acrylate, and 0.45 g of acrylic acid were added with continuous magnetic stirring for 20 min to obtain a uniformly stirred pre-emulsion. The pre-emulsion was put into an u...

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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 taking the 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 antistatic coating 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 a nano-core-shell structure conductive polyaniline and a preparation method thereof. Background technique [0002] The current antistatic coatings mainly introduce antistatic additives into the coatings. The existing antistatic additives mainly include the following: 1. Carbon series (carbon black, graphite, etc.); 2. Metal powder or wire; The product and color are monotonous, and some mechanical properties of the material will be greatly damaged; the second category: ordinary metal powder or wire is easily oxidized during the resin processing process, and precious metals such as gold and silver are really usable, and often damage the material mechanics The third type has the problem of deterioration during processing. Moreover, the affinity between the above materials and organic resins i...

Claims

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Application Information

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Patent Type & Authority Patents(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