A kind of organosilicon connection coating suitable for ships below the waterline and its preparation method

Abstract

The invention relates to organic silicon connection paint applicable to a place below ship waterline and a preparation method thereof. According to the organic silicon connection paint provided by the invention, macromolecular organic amine reacts with a silane cross-linking agent and reacts with hydroxyl siloxane to form a cured cross-linking body, and a tertiary amine compound is used as a catalyst, so that the connection paint with a proper reaction speed is obtained. Compared with an organic heavy metal catalyst, the connection paint is more environmentally friendly and more efficient; after a component A and a component B are mixed, the working life can reach 60min (at 23 DEG C+ / -2 DEG C); and the strength of a cured coating on epoxy rust-inhibiting primer can reach 1.2MPa, and the connection strength on pollution release type anti-fouling paint is higher than the strength of the anti-fouling paint.

Description

technical field [0001] The invention relates to the technical field of chemical materials, in particular to an organic silicon connection coating suitable for ships below the waterline and a preparation method thereof. Background technique [0002] The International Maritime Organization stipulates that the use of antifouling paints containing organotin will be completely banned after 2008; the most widely used antifouling paints are antifouling paints containing cuprous oxide, because cuprous oxide will also cause water pollution, endanger marine life, and affect The food chain is safe and ultimately endangers human health. Therefore, the use of cuprous oxide-containing antifouling paint has also received more and more attention, and it is only a matter of time before it is banned. The development of non-toxic and environmentally friendly antifouling coatings has become the mainstream trend of future development. [0003] Fouling-release antifouling paint is a non-release...

AI Technical Summary

Problems solved by technology

This antifouling mechanism brings low surface energy silicone antifouling coatings with the following problems: ① poor adhesion to the substrate, poor recoatability; ② poor strength, easy to scratch and damage the surface

However, its components are divided into three parts, A, B, and C, which are inconvenient to apply; the catalyst used is an organotin heavy metal compound that is not environmentally friendly; the mixing gel time of the system is fast, and the coating time is limited, and it is too late to be well on the surface of the primer. Spread out, affecting attachment connections

[0006] Chinese patent application 200910055159.2 discloses an epoxy tie paint for silicone antifouling system to enhance coating adhesion, which mainly consists of bisphenol A epoxy resin, modified polyamide curing agent, film-forming aid, etc. The composition of the connection paint is basically the same as that of the epoxy primer, and it is quite different from the composition of the low surface energy silicone antifouling paint. It cannot provide the anchor points or bonding points required for the adhesion of the fouling release antifouling paint. The connection performance of antifouling paint needs to be improved

[0007] Therefore, in the current technology, the curing time of the silicone resin system is too fast, the coating is inconvenient, the wetting of the primer is insufficient, and the toxic organotin heavy metal catalyst is used; while the epoxy system and the fouling release antifouling paint have good connection performance. not tall

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