Water-based protective coating with peeling property and preparation method thereof

Abstract

The invention provides a water-based protective coating with a peeling property and a preparation method thereof, and belongs to the field of coatings. The water-based protective coating with the peeling property is prepared from the following components in parts by weight: 40-80 parts of a polyurethane emulsion, 0.5-2 parts of a mold inhibitor, 5-15 parts of a coalescing agent, 0.1-2 parts of a rheology control agent and 0.15-3 parts of a surface control additive. The water-based protective coating group with the peeling property has relatively fast drying time and mild drying conditions, andadapts to a variety of different base materials; a film with the cured coating has good tensile strength and elongation, and is integrally and conveniently peeled off from an original coating layer or a base material layer; the coating has good flexibility after curing, and has good anti-scratch and scratch performance; and meanwhile, the coating has certain flame-retarding properties after curing, and a good guarantee is provided in protective properties and safety.

Description

technical field [0001] The invention relates to a protective coating, in particular to a stripping water-based protective coating and a preparation method thereof, belonging to the field of coatings. Background technique [0002] In the current construction machinery assembly, shipbuilding or ocean transportation and other similar industries, there are usually unplanned mechanical or chemical losses due to the long assembly cycle and long transportation cycle. For example, during the transportation of large mechanical parts, due to accidental friction and other conditions, the paint on the originally painted parts will be worn away, resulting in the loss of protection of the base material and affecting the durability of the parts. As a result, the final product may be damaged in certain durability There is a decrease in performance. Therefore, protective coatings are used in such intermediate links as the protection of the corrosion resistance and mechanical properties of t...

AI Technical Summary

Problems solved by technology

The coating uses inorganic salt as the main film-forming substance, and its application range is relatively narrow. When faced with a complex external environment, it does not have excellent weather resistance and cannot provide a good protective effect.

[0004] Invention patent CN109517463A discloses an antifouling strippable coating composition and its preparation method. The coating prepared by the method has good stripping performance and excellent antibacterial performance, and is mainly used for the protection of aquaculture tanks in aquatic products. limitations, and the paint is a solvent-based paint with a large amount of VOC emissions, and the pollution to the environment is more serious than water-based paints

The coating described in the invention adds a large amount of stripping agent and filler, which affects the physical composition and transparency of the coating after curing, and is not suitable for coating in long-term complex environments or on substrates that require transmittance

[0006] In the existing technology, there are fewer types of protective coatings for parts and components in the process of assembly and transportation of construction machinery, the functions are relatively single, and the emission of VOC is relatively high

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