Water-based environment-friendly primer-topcoat coating for superstructure and cabin of ship

Abstract

The invention provides a water-based environment-friendly primer-topcoat coating for superstructures and cabins of ships. The water-based environment-friendly primer-topcoat coating comprises the following components in percentage by mass: 50-70% of a special modified emulsion, 5-15% of a pigment, 10-25% of a functional filler, 3-8% of a cosolvent, 3-8% of a water-based additive and 7-12% of water, wherein the special modified emulsion is one or more of self-crosslinking acrylate modified copolymer emulsion, water-based acrylic epoxy hybrid emulsion and water-based nano hybrid resin. The coating film of the product has excellent corrosion resistance, adhesive force, impact resistance, wear resistance, glossiness and outstanding flexibility; by combining the performance of the water-based primer and the performance of the water-based finish paint, the actual requirements of ship superstructure and cabins are met, the number of construction paths is reduced, the construction period is greatly shortened, and the operation efficiency is improved; and therefore, the effective unification of environmental protection, construction convenience, corrosion resistance and decoration is achieved.

Description

technical field [0001] The invention relates to the field of ship coatings, and mainly relates to a water-based, environment-friendly, bottom-surface-in-one coating used for ship construction and cabins. Background technique [0002] At present, most of the coatings used in ship construction and cabins are organic solvent-based coatings. During the construction process, a large amount of volatile organic compounds (VOC) will be produced, which not only pollutes the environment, but also is prone to fire, poisoning and other accidents, affecting the cabin personnel. of good health. The water-based marine engine room coating uses water as the dispersion medium, which can greatly reduce the use and emission of VOCs and reduce environmental pollution. It is non-combustible and non-explosive during paint production, storage and painting, which can eliminate fire and poisoning hazards during paint construction in interior cabins, make some hot work and cross-work possible, and im...

AI Technical Summary

Problems solved by technology

For example, the patent document CN104449166A discloses a general-purpose one-component bottom-surface-in-one coating on stainless steel, galvanized sheet, and aluminum alloy, which consists of epoxy-modified acrylic resin, xylene, butyl acetate, leveling agent, defoamer, Adhesion promoter, chlorinated paraffin, precipitated barium sulfate, rutile titanium dioxide, carbon black powder, medium chrome yellow powder, polyamide wax and other components; although it has good adhesion on metal substrates such as stainless steel, but its Belongs to traditional solvent-based coatings, with serious VOC emissions and poor environmental protection

Another example is the patent document CN106046986A which discloses a quick-drying bottom-surface-in-one coating, which is made of the following raw materials: 60-80 parts of water-based acrylic resin, 20-30 parts of amino resin, 6-8 parts of coloring pigment, and 10-20 parts of filler , 8-10 parts of defoaming agent, 6-8 parts of leveling agent, 120-130 parts of deionized water, 6-8 parts of nano titanium dioxide, 5-7 parts of maleic anhydride, 8-10 parts of ethanol, 15 parts of curing powder -25 parts; although the coating is a water-based environmental protection bottom-surface coating and has a fast drying speed, the curing of the coating requires high-temperature baking at 80°C, and it cannot be cured to form a film at room temperature, so it is not suitable for ship construction and cabins Coating of such large components

Another example is that the patent document CN105238171A discloses a water-based heavy-duty anti-corrosion bottom surface all-in-one coating formulation, including the following components: water-based polysiloxane resin 10-20%, water-based fluorocarbon resin 10-15%, water-based quinone amine polymer 10- 15%, water-based epoxy resin and other polymers 5-15%, water-based phenalkamine epoxy curing agent 5-15%, coloring pigment 1-5%, antirust pigment 2-7%, inorganic filler 10-15%, PH Value regulator 1-3%, co-solvent 1-5%, dispersant 5-12%, thickener 1-5%, defoamer 0.5-1.3%, leveling agent 0.5-1.7%; although the coating has Good salt spray resistance, but it requires a higher coating thickness, requires multiple sprays, low construction efficiency, and loses the advantage of the bottom surface in one coating

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