52results about How to "Extend the antifouling period" patented technology

A self-polishing antifouling coating is characterized in that the self-polishing antifouling coating includes a fluorine-containing silyl acrylate matrix resin (A) having a self-polishing performance, an antifouling agent (B), a pigment filler (C), an assistant (D) and a solvent (E). The antifouling coating which has a good polishing performance and a low surface performance has the characteristics of long antifouling period, good antifouling performance, excellent polishing resistance reduction performance and the like. The antifouling coating which contains no toxic substances comprising tin, DDT or the like has the characteristics of friendliness to the sea environment, simple and convenient construction, easy maintenance and the like, and can satisfy the demands on the long-acting antifouling coating of subsea facilities.

The invention belongs to the technical field of marine protection, and in particular relates to a water-based soft biomass antifouling paint and a preparation method thereof. A water-based soft bio-antifouling paint, the paint comprises A, B two-component, A, B component mass ratio is 8-10:1, wherein A component is the resin base material carrier, the mass fraction ratio is : Water-based acrylic resin 60-66%, red iron oxide 0-6%, zinc oxide 5%, active silica 0-3%, organic bentonite 0-1%, zinc pyrithione 3-4%, pyrithione Copper 3-4%, antifouling agent 9-10%, ethanol 5%, water 6%; B component is a crosslinking agent. The formula adopted in the invention is nontoxic and harmless, and the antifouling paint obtained after mixing has good antifouling effect.

The invention relates to preparation and application of zinc acrylate-type self-polishing matrix resin for an antifouling coating. The matrix resin has good self-polishing property, and the antifouling coating prepared by using the matrix resin has the characteristics of being long in anti-fouling period, excellent in anti-fouling property, excellent in polishing and drag-reduction performances and the like. The invention provides the anti-fouling coating prepared from the zinc acrylate-type self-polishing matrix resin for the antifouling coating. The matrix resin has good self-polishing property, and the anti-fouling coating prepared by the matrix resin has the characteristics of being long in antifouling period, excellent in antifouling property, excellent in polishing and drag-reduction performances and the like. The anti-fouling coating does not contain toxic substances such as tin and dichloro-diphenyl-tricgloroethane (DDT), has the characteristics of being friendly to the marine environment, simple and convenient to construct, easy to maintain and the like, and can meet the requirements of underwater facilities on the long-term antifouling coating in the sea.

The invention belongs to the technical field of lubricating functional materials, in particular to a low-friction self-lubricating acrylic resin, a preparation method and application thereof, and a low-friction self-lubricating marine antifouling coating. The structure of the low-friction self-lubricating acrylic resin provided by the present invention is grafted and introduced with silicone oil groups to construct a low-friction self-lubricating interface, which significantly improves the mechanical properties of the low-friction self-lubricating acrylic resin and is beneficial to improving the stability of the self-lubricating interface; Grafting introduces unsaturated organic acid divalent metal ion salt structure and sulfonic acid inner salt, which is beneficial to enhance the static antifouling performance of low-friction self-lubricating acrylic resin and prolong the antifouling effect; fluorine-containing acrylate structure and silicone oil structure are introduced together The main chain of the low-friction self-lubricating acrylic resin is beneficial to reduce the surface energy of the paint coating containing the low-friction self-lubricating acrylic resin and enhance the drag reduction performance.

A preparation method of a silicone-modified acrylic hydrogel antifouling coating, the steps of: first synthesizing a silicone-modified acrylic resin, and then preparing a hydrogel antifouling coating: the antifouling coating is composed of A and B components For two-component coatings, the mass ratio of component A and component B is 8:1, and component A is the resin base material carrier, and the ingredients are: 55-65 parts of silicone modified acrylic resin, 4-4 parts of iron oxide red 6 parts, 0.5-1.5 parts of organic bentonite, 4-6 parts of zinc oxide, 7-9 parts of copper pyrithione, 8-10 parts of Sea‑Nine211 antifouling agent, 10-12 parts of organic solvent; component B is cross-linked agent carrier, the components are 25-35 parts of aziridine cross-linking agent, 60-70 parts of n-butanol, and 4-6 parts of water; the above-mentioned parts are parts by mass. The invention introduces silicone into the acrylic resin system by chemical method, and then cooperates with appropriate additives and antifouling agents to form a low-surface organic silicon antifouling barrier layer, so that the coating has the functions of self-layering and self-repairing, not only the process Simple, good anti-fouling effect, and the amount of anti-fouling agent is small, effectively prolonging the anti-fouling effect.