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Epoxy rust coating with self-repair function and preparation method thereof

A technology of rusty paint and epoxy tape, applied in the field of paint, to achieve good self-repair function, improve transformation ability, and good storage stability

Active Publication Date: 2016-03-30
INST OF METAL RESEARCH - CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the fact that the existing rusty coatings cannot meet the requirements of the power system, the purpose of the present invention is to provide a self-repairing epoxy rusty coating and a preparation method thereof, which can prepare a coating with a self-repairing function, and use the coating On the surface of corroded metal substrate, it can improve the protective effect of the substrate

Method used

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  • Epoxy rust coating with self-repair function and preparation method thereof
  • Epoxy rust coating with self-repair function and preparation method thereof

Examples

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preparation example Construction

[0038] (1) Preparation of molecular sieve:

[0039] The gel mixture was prepared by using pseudo-boehmite and orthophosphoric acid as sources of aluminum and phosphorus, and triethylamine as a template. The molar ratio of the gel mixture is Al 2 o 3 :P 2 o 5 : 1.5 Triethylamine: 120H 2 O (that is, in molar ratio, Al 2 o 3 :P 2 o 5 : Triethylamine: H 2 0=1:1:1.5:120). Pseudo-boehmite is first mixed with deionized water, and the mixed slurry is mechanically stirred in an autoclave for 12 hours, then the mixture of orthophosphoric acid and deionized water is added to the mixed slurry, and the slurry becomes a viscous gel, stirred After 2 hours it became a mobile liquid. Then triethylamine was added to the gel, stirred for 3 hours, and then the gel was put into an autoclave at 205° C. for 20 hours. The reacted solid was washed with water five times, dried at 105°C for 6 hours, sintered at 560°C for 12 hours, ground and passed through a 325-mesh sieve to obtain an alumi...

Embodiment 1

[0053] Add 64kgE51 epoxy resin to the reaction kettle, then add 0.5kg under stirring Dispersant, 0.5kgBENTONE27 anti-sedimentation agent, 15kg xylene, 5kg coated aluminum phosphate molecular sieve and 15kg titanium dioxide stirred for 40 minutes; these epoxy resin mixtures were ground again to obtain component one of epoxy band rust coating; In another reactor, dissolve 50kg650 polyamide resin curing agent in 50kg toluene to make component two of epoxy rust coating; add component two according to the mass ratio of component one: component two = 100:85 Add to component one, cure at room temperature for 7 days to form epoxy rust coating.

Embodiment 2

[0055] Add 64kgE51 epoxy resin to the reaction kettle, then add 0.5kg under stirring Dispersant, 0.5kgBENTONE27 anti-sedimentation agent, 19kg dimethylbenzene, 1kg coated aluminum phosphate molecular sieve and 15kg titanium dioxide stirred for 40 minutes; these epoxy resin mixtures were ground again to obtain component one of epoxy band rust coating; In another reactor, dissolve 50kg650 polyamide resin curing agent in 50kg toluene to make component two of epoxy rust coating; add component two according to the mass ratio of component one: component two = 100:85 Add to component one, cure at room temperature for 7 days to form epoxy rust coating.

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Abstract

The invention relates to an epoxy on rust paint with a self-repairing function and a preparation method thereof, belonging to the technical field of paints. The epoxy on rust paint is formed by epoxy resin, molecular sieves, pigments, auxiliaries, solvents, a curing agent and the like. The preparation method is characterized by firstly synthesizing aluminium phosphate molecular sieves, secondly modifying the aluminium phosphate molecular sieves with an organic acid and an inorganic acid, thirdly enveloping the aluminium phosphate molecular sieves with coupling agents, and finally preparing the epoxy on rust paint with the enveloped aluminium phosphate molecular sieves. The paint has controllable rust layer transforming capability and good rustless iron-steel substrate self-repairing capability, and can be widely applied to on rust coating of transmission equipment, bridges, ships, offshore platforms, port facilities, outer walls of oil tanks and the like.

Description

technical field [0001] The invention relates to an epoxy rusty coating with self-repairing function and a preparation method thereof, belonging to the technical field of coatings. Background technique [0002] Power facilities are severely corroded in acid rain or coastal environments, requiring protective coatings with excellent performance for protection. Protective coatings for electric power have a certain service life according to the regulations of the electric power company, such as: 3 years or 5 years. When maintenance is carried out beyond the service life, it is often seen that some steel components have been severely corroded due to the failure of the surface coating. These rust layers must be removed during maintenance before repainting. For the angle steel structure of outdoor power poles and towers, it is difficult to remove the rust layer on the surface of the steel substrate due to the large number of edges and corners and the short maintenance time of powe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D7/12C09D5/08
Inventor 刘福春韩恩厚柯伟邓静伟尹桂来唐囡
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI