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Preparation method of polyaniline-epoxy graft modified acrylic ester compound

An acrylate and graft modification technology, applied in the fields of chemical synthesis, polyaniline coating production, and coating production, can solve the problem that the anti-corrosion properties of polyaniline cannot be highlighted, it is difficult to form a dense composite coating, and the comprehensive performance of anti-corrosion coating It can achieve long-term anti-corrosion or long-term anti-corrosion and anti-static performance, adjustable flexibility, and good weather resistance.

Active Publication Date: 2014-10-15
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the conjugated structure of polyaniline, it is difficult to be compatible with general-purpose coating resins. As a result, it is difficult to form a dense composite coating. The comprehensive performance of anti-corrosion coating is reduced due to the defect of film compactness
[0005] At present, the heavy-duty anti-corrosion performance of coatings is usually achieved by adding high-efficiency anti-corrosion pigments. As a result, the coating film often slowly releases toxic heavy metal ions into the environment, causing serious pollution to the environment.
With the increasingly stringent environmental regulations, the use of such anti-corrosion pigments is strictly limited

Method used

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  • Preparation method of polyaniline-epoxy graft modified acrylic ester compound
  • Preparation method of polyaniline-epoxy graft modified acrylic ester compound
  • Preparation method of polyaniline-epoxy graft modified acrylic ester compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1 step:

[0032] Dissolve 5.44g of E-51 epoxy resin in 50g of toluene, add it into a four-necked flask equipped with a stirrer, thermometer, and reflux condenser, and heat it to 95°C in a water bath to form solution 1.

[0033] Take 27.58g of methyl methacrylate, 2.72g of acrylic acid, 18.39g of butyl acrylate, 1.5g of BPO (benzoyl peroxide), 0.272g of acrylamide, dissolve in 50g of toluene, mix well and add to the constant pressure dropping funnel , forming solution II.

[0034] The solution two was added dropwise to the solution one, and after 3 hours of dropwise addition, the temperature of the mixed system was raised to 98°C. After being kept warm for 2 hours, and then lowered to 0°C, 6.528g of aniline was added, stirred for 30 minutes, and an oxidative polymerization initiator solution composed of 16.99g of BPO dissolved in 15.6g of butyl acetate was added dropwise for oxidative polymerization initiation of the dropwise addition. The temperature of the...

Embodiment 2

[0035] Embodiment 2 steps:

[0036] Dissolve 6.8g of E-44 epoxy resin in 50g of toluene, add it into a four-necked flask equipped with a stirrer, thermometer, and reflux condenser, and heat it to 94°C in a water bath to form solution 1.

[0037] Take 34.476g methyl methacrylate, 3.4g methacrylic acid, 22.984g ethyl acrylate, 1.8g dicumyl peroxide, 0.34g acrylamide, dissolve in 40g toluene, mix well and add to the constant pressure dropping funnel , forming solution two.

[0038]Add two drops of solution into solution one. After 3 hours of dropwise addition, raise the temperature of the mixed system to 98°C, keep warm for 2 hours, then cool down to 0°C, then add 4.08g of aniline, stir for 30min, dropwise add 10.6g of peroxide Dissolve dicumyl in an oxidative polymerization initiator solution composed of 12g methyl ethyl ketone, add dropwise the oxidative polymerization initiator solution for dripping. Polyacrylate compound solution.

[0039] The formulations of other example...

Embodiment 3

[0041]

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Abstract

Relating to the technical field of paint production, the invention provides a preparation method of a polyaniline-epoxy graft modified acrylic ester compound. The method includes: in the presence of a solvent, firstly mixing epoxy resin, a functional monomer, acrylic ester and an initiator to prepare carboxyl-containing epoxy graft acrylic ester resin through a solution polymerization technique; then adding aniline, and carrying out in situ oxidation polymerization of aniline on the carboxyl-containing epoxy graft acrylic ester resin, thus obtaining the polyaniline-epoxy graft modified acrylic ester compound. The formed epoxy graft modified acrylic ester resin concentrates the room temperature curable performance, excellent corrosion resistance, strong adhesion to a substrate and other characteristics of epoxy resin, and the water resistance, weatherability, gloss and color retention, adjustable mechanical performance and other characteristics of acrylic ester resin. The compound is compounded in a molecular level state in an organic solvent, and is stable for long-term storage.

Description

technical field [0001] The invention relates to the technical field of coating production, in particular to the technical field of polyaniline coating production, and also to the technical field of chemical synthesis. Background technique [0002] Polyaniline has become one of the most promising electroactive polymers due to its many advantages such as easy availability of raw materials, simple synthesis, high electrical conductivity, and good environmental stability. [0003] The anti-corrosion performance of polyaniline is very excellent, mainly reflected in the ability to passivate the metal surface, increase the potential, and prevent the occurrence of electrochemical corrosion reactions; the passivation film generates an electric field on the metal surface, and the direction of the electric field is opposite to the direction of electron transfer. It hinders the transfer of electrons from the metal to the passivation film, which is equivalent to a barrier function for el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/02C08F283/10C08F220/18C08F220/14C08F220/56C08F220/28
Inventor 朱爱萍汪宏生钱阳
Owner YANGZHOU UNIV
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