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A kind of modified ferric oxide particle and its preparation method and application, modified ferric oxide/epoxy composite coating and its application

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: 2022-05-27
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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  • A kind of modified ferric oxide particle and its preparation method and application, modified ferric oxide/epoxy composite coating and its application
  • A kind of modified ferric oxide particle and its preparation method and application, modified ferric oxide/epoxy composite coating and its application
  • A kind of modified ferric oxide particle and its preparation method and application, modified ferric oxide/epoxy composite coating and its application

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preparation example Construction

[0031] The present invention provides a method for preparing modified ferric oxide particles described in the above scheme, comprising the following steps:

[0032] Will Fe 3 O 4 The dispersion solution and the silane coupling agent aqueous solution were mixed, and the grafting reaction was carried out under the condition of pH of 3 to 4 to obtain intermediate Fe 3 O 4 ；

[0033] Place the middle Fe 3 O 4 The dispersion, initiator and glycidyl methacrylate are mixed to polymerize to obtain modified ferric oxide particles.

[0034] In the present invention, without special description, the raw materials used are well known in the art of commercial goods.

[0035] The present invention will Fe 3 O 4 The dispersion solution and the silane coupling agent aqueous solution were mixed, and the grafting reaction was carried out under the condition of pH of 3 to 4 to obtain intermediate Fe 3 O 4 。

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

Embodiment 1

[0065] Take 2 g Fe 3 O 4 Disperse in 400 mL absolute ethanol and sonicate for 1 h to obtain Fe 3 O 4 Disperse liquid; take 4.5 g of silane coupling agent KH570 and 0.5 g of deionized water to configure an aqueous solution of silane coupling agent, and turn Fe 3 O 4 The dispersion solution and the silane coupling agent aqueous solution were mixed, and the pH value was 3~ 4, 80 °C under the condition of mechanical stirring for 5h for grafting reaction to obtain intermediate Fe 3 O 4 , denoted K-Fe 3 O 4 Take 0.5g K-Fe 3 O 4 Dispersed in 400mL absolute ethanol, after adding 0.1g AIBN, mechanically stirred at 80 °C, while slowly adding 5g GMA, after the drop-added at 80 °C continue to stir for 8h for polymerization reaction, to obtain G-Fe 3 O 4 。

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Abstract

The invention provides a modified ferric oxide particle and a preparation method thereof, a modified ferric oxide / epoxy composite coating and an application thereof, belonging to the technical field of anticorrosion and protection. The modified ferric oxide particles of the present invention comprise a ferric oxide inner core and an outer shell, the outer shell is a polymer of glycidyl methacrylate; the inner core and the outer shell are connected by a silane coupling agent. The present invention utilizes the polymer of GMA to wrap Fe of the inner core 3 O 4 particles, avoiding Fe 3 O 4 contact between particles, thus preventing Fe 3 O 4 agglomeration; moreover, GMA polymer can participate in the curing reaction of epoxy resin to form a stable three-dimensional network structure, which makes the modified ferric oxide particles and epoxy resin have good compatibility and can greatly inhibit the fracture The expansion of cracks hinders the penetration of corrosive media, and finally improves the mechanical properties and anti-corrosion properties of epoxy coatings in low temperature environments.

Description

Technical field [0001] The present invention relates to the field of anti-corrosion and protective technology, in particular to a modified ferric oxide particle and preparation method and application thereof, modified ferric oxide / epoxy composite coating and its application. Background [0002] As a high-performance organic coating, epoxy resin coating is widely used in the field of metal corrosion protection. However, because the pure epoxy coating is easy to embrittle and break and peel off at low temperature, it greatly affects the protective performance of the epoxy coating in low temperature environment. [0003] The structure of the epoxy coating is the key to affecting its protective properties. Currently, most researchers do this by adding modified graphene oxide (MAN C, WANG Y, LI W, et al. The anti-corrosion perfomance oftheepoxy coating enhanced via 5-Amino-1,3,4-thiadiazole-2-thiol grafed grapheneoxide at ambient and low temperatures[J]. Progress in OrganicCoatings....

Claims

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Application Information

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Patent Type & Authority Patents(China)
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