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A bottom-surface-integrated anti-fouling and anti-corrosion nano polysiloxane coating and its preparation method

A polysiloxane and polysiloxane resin technology, which is applied in the field of nanoparticle modification technology and coatings, can solve rare problems such as reducing the number of spraying passes, increase density, and improve corrosion resistance. Effect

Active Publication Date: 2019-08-16
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few relevant reports on the chemical surface modification of nano-pigments and fillers and their use in the preparation of high corrosion-resistant coatings.

Method used

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  • A bottom-surface-integrated anti-fouling and anti-corrosion nano polysiloxane coating and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] 1. Nano-SiO modified by epoxy functional group silane coupling agent 2 Modified nano-SiO with fluorosilane coupling agent 2 preparation of

[0045] 1) Epoxy functional group silane coupling agent modified nano-SiO 2

[0046] nano-SiO 2 Added to 3-glycidyloxypropyltriethoxysilane to make nano-SiO 2 The mass fraction is 20%; then add nano-SiO 2 Prepare a mixture of 40 times the mass of water and 40 times the mass of isopropanol. The mixture was heated and stirred at 80° C. under slightly acidic (pH=5) conditions for 1 h. Finally, the mixture was dried at 30°C. After grinding, pass through a 325 mesh sieve to obtain epoxy functional group silane coupling agent modified nano-SiO 2 pink.

[0047] 2) Nano-SiO modified by fluorosilane coupling agent 2

[0048] nano-SiO 2 Added to heptadecafluorodecyltrimethoxysilane to make nano-SiO 2 The mass fraction is 20%; then add nano-SiO 2 Prepare a mixture of 40 times the mass of water and 3 times the mass of ethanol. Th...

Embodiment 2

[0054] 1. Nano-SiO modified by epoxy functional group silane coupling agent 2 Modified nano-SiO with fluorosilane coupling agent 2 preparation of

[0055] 1) Epoxy functional group silane coupling agent modified nano-SiO 2

[0056] nano-SiO 2 Added to 3-(2,3-epoxypropoxy)propylmethyldimethoxysilane to make nano-SiO 2 The mass fraction is 25%; then add nano-SiO 2 Prepare a mixture of 45 times the mass of water and 50 times the mass of isopropanol. The mixture was heated and stirred at 100° C. and slightly acidic (pH=5.5) for 0.5 h. Finally, the mixture was dried at 40°C. After grinding, pass through a 325 mesh sieve to obtain epoxy functional group silane coupling agent modified nano-SiO 2 pink.

[0057] 2) Nano-SiO modified by fluorosilane coupling agent 2

[0058] nano-SiO 2 Added to dodecafluoroheptylpropylmethyldimethoxysilane to make nano-SiO 2 The mass fraction is 25%; then add nano-SiO 2 Prepare a mixture of 45 times the mass of water and 5 times the mass o...

Embodiment 3

[0064] 1. Nano-SiO modified by epoxy functional group silane coupling agent 2 Modified nano-SiO with fluorosilane coupling agent 2 preparation of

[0065] 1) Epoxy functional group silane coupling agent modified nano-SiO 2

[0066] nano-SiO 2 Added to γ-(2,3-glycidoxy)propyltrimethoxysilane to make nano-SiO 2 The mass fraction is 30%; then add nano-SiO 2 Prepare a mixture of 50 times the mass of water and 45 times the mass of isopropanol. The mixture was heated and stirred at 90° C. for 2 h under slightly acidic (pH=4.5) conditions. Finally, the mixture was dried at 50°C. After grinding, pass through a 325 mesh sieve to obtain epoxy functional group silane coupling agent modified nano-SiO 2 pink.

[0067] 2) Nano-SiO modified by fluorosilane coupling agent 2

[0068] nano-SiO 2 Added to trifluoropropyltrimethoxysilane to make nano-SiO 2 The mass fraction is 30%; then add nano-SiO 2 Prepare a mixture of 50 times the mass of water and 4 times the mass of ethanol. ...

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Abstract

The invention relates to a nano particle modification technique and a coating technique, in particular to a bottom-surface combined type antifouling and antiseptic nanometer polysiloxane coating and a preparation method thereof. Firstly, epoxy functional groups of nanometer particles are modified by a silane coupling agent and a silicon fluoride coupling agent. Then, by mass part, 40-60 parts of polysiloxane resin, 0.2-1 part of epoxy functional group silane coupling agent modified nano SiO2, 0.2-1 part of silicon fluoride coupling agent modified nano SiO2, 0.5-1.5 parts of an anti-settling agent, 0.3-0.8 part of a leveling agent, 0.2-0.7 part of a defoaming agent, 0.4-1 part of a dispersant, 5-10 parts of a coloring pigment, 20-30 parts of an antirust pigment, 5-15 parts of a filler, and 3-8 parts of an organic solvent are taken, dispersed and grinded into the fineness less than 30[mu]m to prepare a component A. The component A and a component B are mixed to prepare the antifouling and antiseptic nanometer polysiloxane coating. The coating has a high solid characteristic, and excellent corrosion resisting, weather-proof, and antifouling performances, and is suitable for anticorrosion fields of a plurality of occasions.

Description

technical field [0001] The invention relates to nanoparticle modification technology and coating technology, specifically a bottom-surface-integrated anti-fouling and anti-corrosion nano-polysiloxane coating and a preparation method thereof. This coating can be used for ships, ocean platforms, wharf facilities, bridges, and vehicles , aviation, power facilities, etc., and has anti-fouling and anti-corrosion functions. Background technique [0002] The continuous development of modern industrialization makes corrosion and pollution more and more serious. The direct economic loss caused by metal corrosion in the world is about 700 billion U.S. dollars every year. According to statistics, my country's annual loss due to corrosion accounts for about 3-5% of GDP. At present, the loss caused by corrosion exceeds 2 trillion yuan, which is far greater than the sum of natural disasters and various accident losses. Therefore, the application of various anti-corrosion measures for m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/04C09D7/62C09D5/08C09C1/28C09C3/12
Inventor 史洪微刘福春韩恩厚
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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