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Nano container filler with multiple self-repairing and anti-corrosion functions and application of nano container filler

A nano-container and self-healing technology, which is applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of low proportion of active substances, difficult to meet, and low load, so as to enhance compatibility and delay corrosion The process, the effect of enhancing the barrier performance of the coating

Active Publication Date: 2021-08-13
SOUTHWEST PETROLEUM UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, most of the self-healing fillers used are mesoporous silica or halloysite nanotubes loaded with active materials, but the proportion of active materials is low and the loading capacity is small, so the protection can only be maintained in a short period of time. Effect
At the same time, a single corrosion inhibition effect is also difficult to meet the needs of complex situations in the industry

Method used

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  • Nano container filler with multiple self-repairing and anti-corrosion functions and application of nano container filler
  • Nano container filler with multiple self-repairing and anti-corrosion functions and application of nano container filler
  • Nano container filler with multiple self-repairing and anti-corrosion functions and application of nano container filler

Examples

Experimental program
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Effect test

Embodiment 1

[0039] A preparation method of nano-container filler CPAA with multiple self-repairing and anti-corrosion functions, the flow chart is shown in figure 1 , the specific method steps are as follows:

[0040] Step 1, preparing hollow polyaniline capsules, the specific operations are as follows:

[0041] (1) Weigh 1.0g of V 2 o 5 Nanoparticles were added to 100mL deionized water, sonicated for 0.5 hours to make V 2 o 5 The nanoparticles were uniformly dispersed to form Suspension A.

[0042] (2) Add 1.0 mL of aniline monomer and 1.0 mL of concentrated sulfuric acid dropwise to the suspension A successively, stir and mix rapidly in an ice bath, and stir for 30 minutes to obtain the suspension B.

[0043] (3) Add an oxidizing agent (ammonium persulfate) to the suspension B, and continue the reaction at a temperature below 5°C for 3 hours; filter the product and wash it repeatedly with deionized water and ethanol, and obtain V after drying for 2 days 2 o 5 @PANI (VP) Composite. ...

Embodiment 2

[0051] An application method of nano-container filler CPAA with multiple self-repairing anticorrosion functions, the steps are as follows:

[0052] (1) Preparation of base material

[0053] Weigh 20g of water-based epoxy resin (WEP) and 10g of amine curing agent (WTF) purchased in the market respectively, mix them at room temperature, and obtain a uniformly dispersed base material after fully stirring (stirring at 600r / min for 15min). The main component of the curing agent is ethylenediamine (EDA), diethylenetriamine (DTA) or triethylenetetramine (TTA).

[0054] (2) Preparation of CPAA / waterborne epoxy self-healing composite coating

[0055] Weigh an appropriate amount of base material and the nano-container filler CPAA prepared in Example 1, mix and fully stir for 30 minutes under an electric stirrer to form a uniformly dispersed CPAA / WEPs composite coating.

[0056] (3) Preparation of coating

[0057] The composite paint is moved into the spray gun, and the paint is evenl...

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Abstract

The invention discloses a nano container filler with multiple self-repairing and anti-corrosion functions, and a preparation method of the nano container filler mainly comprises the following two steps: firstly, preparing a hollow polyaniline capsule: adding vanadium pentoxide into deionized water, dropwise adding an aniline monomer and sulfuric acid, uniformly stirring and mixing in an ice bath, then adding an oxidizing agent, reacting in the ice bath, and obtaining a product C; dispersing the product C in a H2SO4 solution, carrying out stirring reaction at 90 DEG C for 24 hours, and carrying out centrifugal separation and drying to obtain the hollow polyaniline capsule; and secondly, preparing the nano container filler: combining the graphite-phase carbon nitride and the hollow polyaniline capsule to form a three-dimensional nano carrier, loading a BTA corrosion inhibitor on the nano carrier, and then coating the surface with a polydopamine layer to obtain the nano container filler which can be universally used in water-based paint. The waterborne epoxy coating and the nano container filler are selected to be compounded to form the coating. The composite coating has passivation and inhibition multiple self-repairing properties and high penetration resistance, and has a good metal protection effect.

Description

technical field [0001] The invention relates to the technical field of pigments and fillers for anti-corrosion coatings, in particular to a nano-container filler with multiple self-repairing and anti-corrosion functions and an application method thereof. Background technique [0002] Among various anticorrosion strategies, organic coatings are a facile and economical way to protect metals from corrosion. Among them, epoxy coatings are widely used due to their good corrosion resistance and high adhesion to metals. But in practical application, due to Cl-, O 2 , CO 2 A single epoxy coating, especially a water-based epoxy coating, tends to lose its ability to protect the metal substrate in a short period of time due to damage from corrosion factors such as corrosion. One of the effective ways to improve the coating protection ability is to endow the coating with a certain self-healing ability, and this function is usually realized by using nano-fillers with self-healing prop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/08C09D163/00
CPCC09D5/08C09D163/00C08L79/02C08L79/04C08K9/10C08K3/28C08K7/00C08K9/12C08K5/3475
Inventor 张晨陈金镖陈伟豪杨文渊苏晓东
Owner SOUTHWEST PETROLEUM UNIV
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