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Organic fluorosilicon polymer, its anti-corrosion protective coating agent with rust and its preparation method

A silicon polymer and corrosion protection technology, applied in anti-corrosion coatings, fire-resistant coatings, paints containing biocides, etc., can solve problems such as inability to remove scale and rust, hidden safety hazards, unstable operation, etc., and achieve good self-cleaning The effect of corrosion resistance, corrosion resistance, and broad market prospects

Active Publication Date: 2021-01-12
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The rust on the bronze ware can be removed mechanically or by electrolytic reduction. The operation is unstable, and it is difficult to obtain a uniform cleanliness on the bronze surface, and the scale and rust firmly attached to the bronze surface cannot be removed.
In addition, if the copper ware is severely corroded, it cannot be derusted.
Bronze ware is currently protected by corrosion inhibitors, such as benzotriazole for corrosion inhibition treatment, but benzotriazole is easily sublimated by heat and loses its protective effect
And the protective effect on the severely corroded bronzes is not very ideal
[0011] At present, most of the metal cultural relics adopt the above-mentioned protection methods. The above-mentioned metal cultural relics protection methods have the above-mentioned disadvantages. In addition, the above-mentioned metal cultural relics protection methods are not long-term, or the means of protection affect the appearance of metal cultural relics to a certain extent. At the same time, the above-mentioned cultural relics protection methods Insufficient protection ability will cause discoloration or even failure of cultural relics after a period of storage, which will affect the appearance and even cause safety hazards

Method used

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  • Organic fluorosilicon polymer, its anti-corrosion protective coating agent with rust and its preparation method
  • Organic fluorosilicon polymer, its anti-corrosion protective coating agent with rust and its preparation method
  • Organic fluorosilicon polymer, its anti-corrosion protective coating agent with rust and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Add 30 grams of hexafluorobutyl methacrylate, 5 grams of vinyltrimethoxysilane, (meth)acrylates (including 4.5 grams of methyl methacrylate, 3.5 grams of glycidyl methacrylate, acrylic acid 2.5 grams of n-butyl ester, 2 grams of isooctyl acrylate) 12.5 grams, 2.5 grams of styrene, then add 0.3 grams of azobisisobutyronitrile, stir at 70 ° C for 1.5 hours to completely dissolve the initiator, and polymerize the monomers to be polymerized When there is a certain viscosity (glycerin-like), add 1.5 grams of cross-linking agent and continue to stir for half an hour to control the cross-linking degree of the monomer (the reaction polymer is viscous and silky). In the reaction, 30% solvent of the total mass ratio of mixed monomers was added to prevent reaction detonation. After the reaction is completed, add a solvent to dilute to a certain concentration, usually 10-30%. For simple protection, a low concentration is sufficient, and for a high degree of protection, a high conce...

Embodiment 2

[0053] Add 15 grams of dodecafluoroheptyl methacrylate, 5 grams of vinyltriethoxysilane, (meth)acrylates (9 grams of methyl methacrylate, 7 grams of glycidyl methacrylate) into the container , 5 grams of n-butyl acrylate, 4 grams of isooctyl acrylate) 25 grams, 5 grams of styrene, then add 0.3 gram of azobisisobutyronitrile, and stir for 1.5 to 3 hours to completely dissolve the initiator. Polymerize to a certain viscosity (glycerol-like), add 1.5 grams of cross-linking agent and continue to stir for half an hour to control the cross-linking degree of the monomer (the reaction polymer is viscous and silky). In the reaction, 30% solvent of the total mass ratio of mixed monomers was added to prevent reaction detonation. After the reaction is completed, a solvent is added to dilute to a certain concentration, usually 10-30%. Low concentrations are sufficient for simple protection, and high concentrations are required for high protection requirements. Add 4 grams of nano-silica,...

Embodiment 3

[0062] Add 35 grams of dodecafluoroheptyl methacrylate, 5 grams of vinyltrimethoxysilane, (meth)acrylates (including 1.5 grams of methyl methacrylate, 3 grams of glycidyl methacrylate, 2 grams of n-butyl acrylate, 1 gram of isooctyl acrylate) 7.5 grams, 2.5 grams of styrene, then add 0.3 gram of azobisisobutyronitrile, stir for 2.5 hours, the initiator is completely dissolved, and the monomers to be polymerized are polymerized to With a certain viscosity (glycerin-like), add 1.5 grams of cross-linking agent and continue stirring for half an hour to control the degree of monomer cross-linking (the reaction polymer is viscous and silky). In the reaction, 30% solvent of the total mass ratio of mixed monomers was added to prevent reaction detonation. After the reaction is completed, add a solvent to dilute (can be made into different concentrations according to needs), usually 10-30%. For simple protection, low concentration is enough, and for high protection degree, high concentr...

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Abstract

The invention relates to an organic fluorosilicone polymer, a corrosion protection coating agent with rust and a preparation method of the agent. The structural formula of the polymer is as shown in the specification. The coating agent is non-toxic and harmless, does not cause discoloration of a metal base material after construction, does not damage the appearance surface of the metal, is easy toremove, and is simple and practical. The corrosion protection coating agent with the rust can be used for preventing corrosion on the surface of rusted metal cultural relics, and the surface of the rusted metal cultural relics can be coated only by slight treatment to remove loose substances, grease and other impurities on the surface. The obtained coating layer can obviously improve the corrosion resistance of metal cultural relics, and has excellent aging resistance and weather resistance. The corrosion protection coating agent can replace the traditional derusting process, can be directlycoated on the surface of metal cultural relics, has simple construction operation and obvious economic value, and has very good industrialization prospect.

Description

technical field [0001] The invention relates to a coating agent and its application in the field of metal cultural relics protection, in particular to an organic fluorosilicon polymer, its anti-corrosion protective coating agent with rust and a preparation method thereof. Background technique [0002] At present, the representative technology of anti-corrosion with rust is mainly rust-coated coatings, which have formed many types. According to the basic film-forming materials currently used, they include: polyethylene, polystyrene butylene, alkyd, epoxy, oily phenolic, epoxy - Bitumen, polyacrylate, polyvinyl butyral, etc. According to the anti-rust and anti-corrosion mechanism of the coating, it is usually divided into: stable type, conversion type, penetrating type, water-based anti-rust coating, functional anti-rust coating. Active antirust pigments are often used in stable antirust coatings with rust. It mainly includes chromate, phosphate, ferrite and other active ant...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/22C08F230/08C08F220/14C08F220/18C08F212/08C08F212/36C09D133/16C09D5/18C09D5/08C09D5/16
CPCC08F220/22C08K2003/2241C08K2201/011C09D5/08C09D5/1668C09D5/1687C09D5/18C09D143/04C08K3/36C08K3/22C08K3/04C08F230/08C08F220/14C08F220/325C08F220/1804C08F220/1808C08F212/08C08F212/36C08F222/102
Inventor 高丽郝健崔永梅王辉李小伟
Owner SHANGHAI UNIV