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A kind of preparation method of polyaniline-polyacrylate compound

A polyacrylate and polyaniline technology, applied in anti-corrosion coatings and other directions, can solve the problems of not being able to highlight the anti-corrosion properties of polyaniline, difficult to form a dense composite coating, and the comprehensive performance of anti-corrosion coatings. Environmental protection, improved stability, reduced homopolymerization effect

Active Publication Date: 2016-04-27
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 overall performance of anti-corrosion coatings decreases due to the deterioration of film compactness
[0005] At present, due to the addition of high-efficiency anti-corrosion pigments in heavy-duty coatings, 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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  • A kind of preparation method of polyaniline-polyacrylate compound
  • A kind of preparation method of polyaniline-polyacrylate compound
  • A kind of preparation method of polyaniline-polyacrylate compound

Examples

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Embodiment 1

[0047] Add 80 g of butyl glycidyl ether to a four-necked flask equipped with a stirrer, a thermometer, and a reflux condenser, and heat to 75° C. in a water bath. Take 0.204g glycidyl methacrylate, 0.204g acrylic acid, 3.077g methyl methacrylate, 3.077g butyl acrylate, 0.136g PAM-200, 0.2g azobisisobutyronitrile (AIBN), mix well and add to constant In the pressure dropping funnel, add dropwise for 20 minutes, react at 75°C for 30 minutes after the dropwise addition, raise the temperature to 84°C, continue to drop the remaining mixed monomers and initiators: 0.816g of glycidyl methacrylate, 0.816g of acrylic acid, Acrylamide 0.51g, methyl methacrylate 12.308g, butyl acrylate 12.308g, PAM-200, 0.544g, AIBN 0.8g, butyl glycidyl ether 36g, the dropping time is 3h. After the dropwise addition, keep warm for 2 hours, cool down to 0°C, add 1.897g of aniline, stir for 30min, add dropwise the oxidative polymerization initiator solution, the oxidative polymerization initiator solution c...

Embodiment 2

[0049] Add 47 butyl glycidyl ether to a four-necked flask equipped with a stirrer, a thermometer and a reflux condenser, and heat to 75°C in a water bath. Take 0.326g glycidyl methacrylate, 0.326g acrylic acid, 4.869g methyl methacrylate, 4.869g butyl acrylate, 0.326g PAM-200, 0.2g dibenzoyl peroxide (BPO), mix them all and add to In the constant pressure dropping funnel, add dropwise for 20 minutes, react at 75°C for 30 minutes after the dropwise addition, raise the temperature to 82°C, and continue to drop the remaining mixed monomers and initiators: including 1.306g of glycidyl methacrylate, 1.306g of acrylic acid g, acrylamide 0.816g, methyl methacrylate 19.475g, butyl acrylate 19.475g, PAM-200, 1.306g, BPO, 0.8g, butyl glycidyl ether 28.6g, the dropping time is 3h. After the dropwise addition, keep it warm for 2 hours, lower the temperature to 0°C, add 6.083g of aniline, stir for 30min, add dropwise the oxidative polymerization initiator solution prepared by dissolving 15...

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Abstract

The invention discloses a preparation method of a polyaniline-polyacrylate compound, and relates to the technical field of polyaniline synthesis. The preparation method comprises the following steps: firstly, enabling part of active solvent to be reacted with part of mixed monomers and initiator, then, heating the reacted mixed system, next, dropwise adding the other part of mixed monomers, initiator and active solvent, and carrying out preserved heat reaction until the reaction is ended; cooling the system generated through the reaction to 0-20 DEG C, adding aniline, uniformly stirring, then, dropwise adding an oxidative initiator solution, and then, reacting at normal temperature until the reaction is ended. Polyaniline and polyacrylate resin in the polyaniline-polyacrylate compound disclosed by the invention are formed into a molecular compound to be added into an anticorrosive coating, so that not only is the uniform dispersion of polyaniline in the coating realized, but also polyacrylate resin in the compound can be used for promoting the compatibility of the polyaniline and film forming materials in an anticorrosive coating, so that the long-acting corrosion resistance and environment friendliness of polyaniline in a heavy anticorrosive coating can be realized.

Description

technical field [0001] The invention relates to a synthesis technology of polyaniline, in particular to the technical field of preparation of composite polyaniline used in the field of long-acting, environment-friendly heavy-duty anticorrosion additives. Background technique [0002] Polyaniline has become one of the most promising electroactive polymers due to its many advantages such as readily available raw materials, simple synthesis, high electrical conductivity, and good environmental stability. [0003] The anti-corrosion performance of polyaniline is very excellent, which is mainly reflected in the passivation of the metal surface, the increase of the potential, and the prevention 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 equ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/02C08F220/32C08F220/14C08F220/06C08F220/18C08F230/02C08F220/28C08F220/16C08F220/56C09D5/08
Inventor 朱爱萍汪宏生钱阳
Owner YANGZHOU UNIV
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