Preparation method of polyaniline-polyacrylate compound

A technology of polyacrylate and acrylate, which is applied in the field of compound polyaniline preparation, can solve the problems of difficulty in forming a dense composite coating, inability to highlight the anti-corrosion performance of polyaniline, and the decline in the comprehensive performance of anti-corrosion coatings, etc., to achieve long-term effect Anti-corrosion and environmental protection, stability improvement, effect of reducing homopolymerization

Active Publication Date: 2014-07-02
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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  • Preparation method of polyaniline-polyacrylate compound
  • Preparation method of polyaniline-polyacrylate compound
  • Preparation method of polyaniline-polyacrylate compound

Examples

Experimental program
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Effect test

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, 0.136gPAM-200, 0.2g azobisisobutyronitrile (AIBN), mix well and add to constant In the pressure dropping funnel, add dropwise for 20 minutes. After the addition is complete, react at 75°C for 30 minutes, heat up to 84°C, continue to drop the remaining mixed monomers and initiator: 0.816g glycidyl methacrylate, 0.816g acrylic acid, Acrylamide 0.51g, methyl methacrylate 12.308g, butyl acrylate 12.308g, PAM-200, 0.544g, AIBN 0.8g, butyl glycidyl ether 36g, dripping time 3h. After the addition, keep for 2h, cool to 0℃, add 1.897g aniline, stir for 30min, add dropwise the oxidative polymerization initiator solution, the oxidative polymerization initiator solution is composed of 4.937g dibenzoyl peroxide (alias: benzoyl ...

Embodiment 2

[0049] Add 47 butyl glycidyl ether to a four-necked flask equipped with a stirrer, thermometer, and 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 and add to In a constant-pressure dropping funnel, add dropwise for 20 minutes. After the addition is complete, react at 75°C for 30 minutes, heat up to 82°C, and continue to add the remaining mixed monomers and initiator dropwise: including 1.306g glycidyl methacrylate and 1.306 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, and the dropping time is 3h. After the dripping is completed, keep the temperature for 2h, cool to 0℃, add 6.083g aniline, stir for 30min, dropwise add 15.796g BPO dissolved in 40g butyl glycidyl ether to make the oxidative polymerization initiator solution...

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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 which is applied in the field of long-acting and environmentally friendly heavy-duty anticorrosive additives. 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 conductivity and good environmental stability. [0003] The anti-corrosion performance of polyaniline is very excellent, mainly reflected in the passivation of the metal surface, increasing the potential, and preventing the occurrence of electrochemical corrosion reaction; the passivation film generates an electric field on the metal surface, the direction of the electric field is opposite to the electron transfer direction. Blocking the transfer of electrons from the metal to the passivation film is equivalent to a barr...

Claims

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Application Information

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Patent Type & Authority Applications(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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