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Nano-enhanced transition layer-free organosilicon low surface energy antifouling coating and preparation method thereof

A nano-enhanced, low surface energy technology, applied in antifouling/underwater coatings, coatings, biocide-containing paints, etc., can solve problems such as poor adhesion, low strength, complex construction, etc., to reduce adhesion, The effect of weakening the binding force and easy to fall off by itself

Active Publication Date: 2017-01-18
DALIAN MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the urgent demand for antifouling and drag-reducing coatings for environmentally friendly ships at home and abroad, low surface energy antifouling coatings have low strength, poor adhesion, complicated construction and other problems, the present invention provides a method that does not require an intermediate transition layer and can be directly A new type of nano-reinforced non-transition layer organic silicon low surface energy antifouling coating applied on the substrate and primer, the coating has the advantages of high strength, high adhesion, easy construction, good recoatability, etc., and can be applied to various ships , offshore oil platforms, marine structures and facilities, marine farming nets, etc., so far, there have been no reports of related technical patents at home and abroad

Method used

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  • Nano-enhanced transition layer-free organosilicon low surface energy antifouling coating and preparation method thereof
  • Nano-enhanced transition layer-free organosilicon low surface energy antifouling coating and preparation method thereof
  • Nano-enhanced transition layer-free organosilicon low surface energy antifouling coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Add 80 parts of α, ω-dihydroxy polydimethylsiloxane with a viscosity of 10000mPa·s and 8 parts of fumed silicon dioxide into the dispersion tank of the dispersing machine in proportion, disperse at 4000rpm for 30min at high speed, and then add 2 parts The multi-walled carbon nanotubes continued to disperse at high speed for 15 minutes to obtain nanometer pre-dispersed slurry;

[0065] Component A Add each composition to the dispersing tank of the dispersing machine sequentially in proportion, stir and disperse at a high speed of 4000 rpm for 30 minutes, and then grind it with a sand mill until the fineness is less than 40 μm, then pack it into a tank for use.

[0066] Components B and C are mixed according to the ratio and canned for use.

[0067] Before use, mix and stir evenly according to the ratio of A:B:C=20:4:1, and obtain a silicone low surface energy antifouling coating after coating and curing.

[0068] The composition of group A:

[0069]

[0070]

[0...

Embodiment 2

[0079] Add 75 parts of α, ω-dihydroxypolydimethylsiloxane with a viscosity of 10000mPa·s and 8 parts of fumed silicon dioxide into the dispersion tank of the dispersing machine in proportion, disperse at 4000rpm for 30min at high speed, and then add 2 parts The single-walled carbon nanotubes continued to disperse at a high speed for 15 minutes to obtain a nano-predispersed slurry;

[0080] Component A Add each composition to the dispersing tank of the dispersing machine sequentially in proportion, stir and disperse at a high speed of 5000 rpm for 30 minutes, and then grind it with a sand mill until the fineness is less than 40 μm, then pack it into a tank for use.

[0081] Components B and C are mixed according to the ratio and canned for use.

[0082] Before use, mix and stir evenly according to the ratio of A:B:C=18:4:1, and obtain a silicone low surface energy antifouling coating after coating and curing.

[0083] The composition of group A:

[0084]

[0085] Component...

Embodiment 3

[0093] Proportionally, 50 parts of α, ω-dihydroxypolydimethylsiloxane with a viscosity of 10000mPa·s and 40 parts of α, ω-dihydroxypolydimethylsiloxane with a viscosity of 2800mPa·s (purchased from Shandong University Yi Chemical Co., Ltd.) and 6 parts of fumed silica were added to the dispersing tank of the disperser, dispersed at a high speed for 30 minutes at 3500 rpm, then added 4 parts of nano-zinc oxide and continued to disperse at a high speed for 15 minutes to obtain a nano-predispersed slurry;

[0094] For component A, add each composition into the dispersing tank of the dispersing machine in sequence in proportion, stir and disperse at a high speed of 3500 rpm for 30 minutes, and then grind it with a sand mill until the fineness is less than 40 μm, then pack it into a tank for use.

[0095] Components B and C are mixed according to the ratio and canned for use.

[0096] Before use, mix and stir evenly according to the ratio of A:B:C=16:3:0.5, and obtain a silicone lo...

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Abstract

The invention discloses a novel nanometer reinforced, non-transition-layer, organosilicone and low-surface-energy type antifouling paint which can be directly coated to a base material and an epoxy primer without an intermediate transition layer. The antifouling paint comprises the following components in parts by weight: 10 to 20 parts of A, 2 to 10 parts of B, and 0.1 to 2 parts of C, wherein the component A comprises the following materials in parts by weight: 25.0 to 50.0 parts of nanometer pre-dispersed slurry, and 0.5 to 5.0 parts of silicone oil; the component B comprises the following materials in parts by weight: 3.0 to 50.0 parts of crosslinking curing agent, and 1.0 to 10.0 parts of silane coupling agent; the component C comprises the following materials in parts by weight: 0.1 to 3.0 parts of catalyst. The coating has the advantages of being high in intensity, high in attaching force, easy to be constructed, and high in recoatability, and can be applied to various ships, offshore oil platforms, ocean structures and facilities, and mariculture nets and the like.

Description

technical field [0001] The invention belongs to the technical field of antifouling coatings and underwater coatings, and in particular relates to a nano-enhanced non-transition layer organosilicon low surface energy antifouling coating and a preparation method thereof. Background technique [0002] The fouling problem of marine organisms has always restricted people's development and utilization of marine resources. The attachment of various marine organisms will increase the ship's navigation resistance and fuel consumption. The metabolites of marine organisms will corrode the ship and increase the ship's life. Maintenance costs will reduce the voyage rate of ships, and marine organisms will also block various pipelines, valves and meshes of culture cages on the seabed, causing economic losses that are difficult to estimate. In order to achieve the prevention and control of marine organisms, anti-fouling coatings are the only widely used and economical and efficient way to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/06C09D5/16C09D7/12
Inventor 张占平齐育红巴淼陈天宇刘福杰
Owner DALIAN MARITIME UNIVERSITY
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