Polysulfide rubber modified epoxy resin anticorrosive coating and preparation method thereof

Abstract

The invention relates to the technical field of anticorrosive paint, and discloses a polysulfide rubber modified epoxy resin anticorrosive coating, which comprises a component A and a component B. The component A comprises epoxy resin (E51), polysulfide rubber (LP3) and triphenylphosphine (TPP), and the component B comprises zinc phosphate and mica powder, and also comprises a curing agent polyether amine D230 and N-aminoethyl piperazine (AEP). According to the polysulfide rubber modified epoxy resin anticorrosive coating and the preparation method thereof, the problems that most of existing heavy anticorrosive coatings cannot well adapt to the high-humidity and high-salt-mist environment on the sea, the water absorption rate of a coating matrix is high, swelling and falling are prone to occurring in the humid environment on the sea, and therefore the barrier effect on corrosion media such as salt mist on the sea is greatly weakened can be solved.

Description

technical field [0001] The invention relates to the technical field of anti-corrosion coatings, in particular to a polysulfide rubber-modified epoxy resin anti-corrosion coating and a preparation method thereof. Background technique [0002] Metal corrosion is very common in the high-salt and high-humidity marine environment, causing incalculable damage and loss to naval equipment, and bringing huge hidden dangers to the safety of personnel and weaponry. Common heavy-duty anti-corrosion technologies include cathodic protection, metal sealing layer, and heavy-duty anti-corrosion coatings, among which heavy-duty anti-corrosion coatings are the most widely used heavy-duty anti-corrosion means in marine environments. Heavy-duty anti-corrosion coatings refer to a class of anti-corrosion coatings that can be applied to more severe corrosive environments and have a longer protection period than conventional anti-corrosion coatings. [0003] The construction method of heavy-duty an...

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Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the present invention adopts liquid polysulfide rubber toughened epoxy resin to prepare the coating matrix to enhance the toughness of the resin matrix, and provides a polysulfide rubber modified epoxy resin anti-corrosion coating and a preparation method thereof, It solves the problem that most of the current heavy-duty anti-corrosion coatings cannot adapt well to the high humidity and high salt spray environment at sea. The coating substrate has a high water absorption rate, and it is prone to swelling and falling off in the humid environment at sea. The barrier effect of the greatly weakened problem

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