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Modified ferroferric oxide particles and preparation method and application thereof, modified ferroferric oxide/epoxy composite coating and application thereof

A kind of iron tetroxide, modified technology, applied in epoxy resin coatings, chemical instruments and methods, anti-corrosion coatings, etc., can solve problems such as poor mechanical properties and anti-corrosion properties, hindering the penetration of corrosive media, etc.

Active Publication Date: 2021-12-31
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of modified ferric oxide particle and preparation method thereof, modified ferric oxide / epoxy composite coating and application thereof, the modified ferric oxide particle of the present invention is used to prepare ring Oxygen composite coating material can effectively avoid the agglomeration of ferroferric oxide nanoparticles, greatly inhibit the expansion of fracture cracks, hinder the infiltration of corrosive media, and finally improve the problem of poor mechanical properties and anti-corrosion properties of epoxy coatings in low temperature environments

Method used

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  • Modified ferroferric oxide particles and preparation method and application thereof, modified ferroferric oxide/epoxy composite coating and application thereof
  • Modified ferroferric oxide particles and preparation method and application thereof, modified ferroferric oxide/epoxy composite coating and application thereof
  • Modified ferroferric oxide particles and preparation method and application thereof, modified ferroferric oxide/epoxy composite coating and application thereof

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preparation example Construction

[0031] The present invention provides a method of preparing the modified tetrashydoxide particles described above, including the following steps:

[0032] Put Fe 3 O 4 The dispersion and the silane coupling aqueous solution are mixed, and the grafting reaction is performed under conditions having a pH of 3 to 4 to obtain intermediate Fe. 3 O4 ;

[0033] Will the intermediate Fe 3 O 4 The dispersion, initiator and methacrylate mixture were mixed, and the polymerization reaction was carried out to obtain a modified tetracted three iron particles.

[0034] In the present invention, the raw materials used are commercially available goods well known in the art without special instructions.

[0035] The present invention will Fe 3 O 4 The dispersion and the silane coupling aqueous solution are mixed, and the grafting reaction is performed under conditions having a pH of 3 to 4 to obtain intermediate Fe. 3 O 4 .

[0036] In the present invention, the Fe 3 O 4 The dispersion used in the d...

Embodiment 1

[0065] Take 2G Fe 3 O 4 Disperse in 400 ml of unhappy ethanol, ultrasonic 1h get Fe 3O 4 Dispersion; take 4.5 g of silane coupling agent KH570 and 0.5 g of deionized water to be configured as a silane coupling agent aqueous solution, will Fe 3 O 4 The dispersion and the silane coupling aqueous solution mixed, mechanically stirred at a pH of 3 to 4, 80 ° C for grafting reaction, resulting in an intermediate Fe 3 O 4 , Remember K-Fe 3 O 4 Take 0.5g k-Fe 3 O 4 After dispersion of 400 ml of anhydrous ethanol, 0.1 gAibn was added, and the mixture was mechanically stirred at 80 ° C, and 5 g gmaa was slowly added dropwise, and the mixture was continued at 80 ° C for 8 h at 80 ° C for G-Fe. 3 O 4 .

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Abstract

The invention provides modified ferroferric oxide particles and a preparation method thereof, a modified ferroferric oxide / epoxy composite coating and application thereof, and belongs to the technical field of corrosion prevention and protection. Each modified ferroferric oxide particle comprises a ferroferric oxide inner core and a shell, wherein the shell is a polymer of glycidyl methacrylate; and the inner core and the shell are connected through a silane coupling agent. The Fe3O4 particles of an inner core are wrapped by a GMA polymer, so that contact among the Fe3O4 particles is avoided, and Fe3O4 is prevented from being agglomerated; moreover, the GMA polymer can participate in the curing reaction of the epoxy resin to form a stable three-dimensional network structure, so that the modified ferroferric oxide particles and the epoxy resin have good compatibility, the expansion of fractures and cracks can be greatly inhibited, and the permeation of corrosive media can be hindered; and finally, the mechanical property and the corrosion resistance of an epoxy coating layer in a low-temperature environment are improved.

Description

Technical field [0001] The present invention relates to the field of anti-corrosion and protection, and more particularly to a modified tetraced oxide particles and preparation methods and applications, modified tetraned iron / epoxy composite coatings and their applications. Background technique [0002] The epoxy resin coating is widely used in metal anti-corrosion fields as a high performance organic coating. However, since the pure epoxy coating is criticized in a low temperature environment, it is greatly affected by the protective properties of the epoxy coating in a low temperature environment. [0003] The structure of the epoxy coating is the key to affecting its protection performance. Currently, most researchers have been added to add modified gossipide (Man C, WANG Y, Li W, et al.the anti-corrosion perfomance offheepoxy coating enhanced via 5-Amino-1, 3, 4-Thiadiazole-2- thiol grafed grapheneoxide at ambient and low temperatures [J] .Progress in OrganicCoatings.2021,1...

Claims

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Application Information

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IPC IPC(8): C09C1/24C09C3/10C09C3/08C09D5/08C09D7/62C09D163/00
CPCC09C1/24C09C3/10C09C3/08C09C3/006C09D5/08C09D7/62C09D163/00C08K2003/2275C08K9/10C08K9/06C08K3/22
Inventor 满成孙议祥国景一崔中雨王昕
Owner OCEAN UNIV OF CHINA
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