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Low-surface-energy organosilicone marine antifouling coating

A low surface energy, marine antifouling technology, used in marine antifouling coatings and underwater coatings, can solve the problems of promotion and application limitations, poor adhesion, low surface energy, etc., to achieve excellent adhesion performance, improve adhesion. The effect of knot strength and difficulty reduction

Active Publication Date: 2022-02-08
湖南益涂纳米材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is precisely because of the low surface energy characteristics of silicone materials that the adhesion between silicone materials and polar substrates (such as metal substrates, or marine intermediate paints, etc.) is poor. With the extension of service time, or friction and collision with other substances, it is easy to fall off in large areas
This shortcoming leads to the promotion and application of low surface energy organosilicon marine antifouling coatings has been greatly restricted

Method used

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preparation example Construction

[0045] A method for preparing a low surface energy organosilicon marine antifouling coating, the marine antifouling coating comprises: (1) 10-20 parts of component A; (2) 4-8 parts of component B; 3) 1-2 parts of component C;

[0046] in,

[0047] The preparation steps of component A are as follows: add each composition into a dispersing mixer in parts by weight, disperse at 300 rpm for 30 minutes, and then take out the uniformly mixed component A and place it in a clean container.

[0048]The preparation steps of component B are as follows: (1) In a light-proof environment, make monomers with olefin groups and thiourea groups, acryloyloxy monomers with ether groups, and (meth)acryloyloxy (2) At the same time, mix the initiator and the solvent at 300-500 rpm for 30-60 minutes by mechanical stirring; (3) Subsequently, the above two The mixture is introduced into the reaction kettle under the protection of nitrogen, and kept under the protection of nitrogen, the reaction is ca...

Embodiment 1】-【 Embodiment 4

[0059] The formula is shown in Table 2. The components A and C weigh the raw materials according to Table 2, and mix them evenly. The components B weigh the raw materials according to Table 2, and prepare according to the following steps:

[0060] (1) In a light-proof environment, pass monomers with olefin groups and thiourea groups, acryloyloxy monomers with ether groups, and silane monomers with (meth)acryloyloxy groups through Mechanical stirring at 300rpm for 60min;

[0061] (2) At the same time, the initiator and the first solvent were mixed for 30min at 500rpm by mechanical stirring;

[0062] (3) Subsequently, the two mixtures of step (1) and step (2) were introduced into the reactor under nitrogen protection, and kept under nitrogen protection, and reacted at 55°C for 5h;

[0063] (4) After the temperature of the reaction product drops to room temperature, component B can be obtained, and it should be taken out and stored away from light.

[0064] Table 2

[0065] ...

Embodiment 5

[0068] Prescription is identical with embodiment 1, and wherein B component is prepared according to the following steps:

[0069] (1) In a light-proof environment, pass monomers with olefin groups and thiourea groups, acryloyloxy monomers with ether groups, and silane monomers with (meth)acryloyloxy groups through Mechanical stirring at 500rpm for 30min;

[0070] (2) Simultaneously, the initiator and the first solvent were mixed for 40min at 400rpm by mechanical stirring;

[0071] (3) Subsequently, the two mixtures of step (1) and step (2) were introduced into the reactor under nitrogen protection, and kept under nitrogen protection, and reacted at 50°C for 4h;

[0072] (4) After the temperature of the reaction product drops to room temperature, component B can be obtained, and it should be taken out and stored away from light.

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Abstract

The invention discloses a low-surface-energy organosilicone marine antifouling coating. A coating layer cured by the coating can be well bonded with a polar base material by virtue of Van der Waals force and hydrogen bond acting force under the synergistic effect of a thiourea group and an ether group, an excellent bonding effect is still kept even if the coating layer is soaked in a seawater environment for a long time, and the surface of the coating layer has the characteristic of low surface energy, the optimal range of fouling organism prevention and control in a Baier curve is met, and the defect that a traditional organic silicon marine antifouling coating is poor in binding power with the polar base material is effectively overcome. The coating can be widely applied to various aspects of the marine antifouling field, including but not limited to marine ships, marine oil drilling platforms, deep sea detection equipment and the like, and is particularly suitable for equipment immersed in a seawater environment for a long time.

Description

technical field [0001] The invention belongs to the technical field of marine antifouling coatings and underwater coatings, and in particular relates to a low-surface-energy organosilicon marine antifouling coating that maintains long-term high adhesion with polar substrates after being submerged in water for a long time. Background technique [0002] The 21st century is the century of the ocean. The great development of the shipping industry has greatly promoted the development of the international economy and cultural exchanges. However, countries all over the world will inevitably face the real problem of marine fouling organisms sticking to the development of marine transportation industry. Marine biofouling refers to the process of non-selective growth of marine organisms on the surface of substrates submerged in seawater. Its essence is the accumulation and growth of biomolecules and organisms on the surface, which usually damages the related functions of the surface, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D151/08C09D5/16C08F283/12
CPCC09D151/08C09D5/1662C09D5/1675C08F283/122
Inventor 巴淼李梦雨李嘉祥余心彤赖灵凤
Owner 湖南益涂纳米材料科技有限公司
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