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Organosilicone room-temperature-cured anticorrosive coating material

A room temperature curing, anti-corrosion coating technology, applied in anti-corrosion coatings, fireproof coatings, coatings, etc., can solve the problems of poor mechanical strength of the paint film, poor resistance to organic solvents, poor adhesion to substrates, etc., to achieve good dust-proof and hydrophobic Excellent function, heat and weather resistance and flame retardancy, and simple construction

Active Publication Date: 2015-11-25
浙江香林新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although silicone resin has many excellent properties, there are still some problems: generally high temperature (150-200°C) curing is required, the curing time is long, and large-area construction is inconvenient
Poor adhesion to the substrate, poor resistance to organic solvents, poor mechanical strength of the paint film at higher temperatures, more expensive, etc.

Method used

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  • Organosilicone room-temperature-cured anticorrosive coating material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Silicone room temperature curing anti-corrosion coating formulation:

[0031] α,ω-Dihydroxypolydimethylsiloxane (from low viscosity α,ω-dihydroxypolydimethylsiloxane with viscosity 500mPa.s~2000mPa.s to high viscosity 10000mPa.s~20000mPa.s Viscosity α, ω-dihydroxy polydimethylsiloxane mixed according to the volume ratio of 2:1) 24 parts,

[0032] 6 parts of hydroxyl-terminated polyphenylmethylsiloxane,

[0033] 0.5 parts of fumed silica,

[0034] 10 parts of aluminum hydroxide powder,

[0035] 5 parts of nano calcium carbonate,

[0036] Pigment paste (iron oxide red paste, mixed from α, ω-dihydroxypolydimethylsiloxane and iron oxide red, by weight percentage, α, ω-dihydroxypolydimethylsiloxane ( The viscosity is 15,000-20,000 cs) 70%, iron oxide red 30%) 5 parts,

[0037] 5 parts of crosslinking agent (methyl tributylketoxime base silane),

[0038] 1 part of coupling agent (silane coupling agent KH171),

[0039] Catalyst (dibutyltin dilaurate) 0.1 part,

[0040]...

Embodiment 2

[0048] Silicone room temperature curing anti-corrosion coating formulation:

[0049] α,ω-Dihydroxypolydimethylsiloxane (from low viscosity α,ω-dihydroxypolydimethylsiloxane with viscosity 500mPa.s~2000mPa.s to high viscosity 10000mPa.s~20000mPa.s Viscosity α, ω-dihydroxy polydimethylsiloxane mixed according to the volume ratio of 1:1) 40 parts,

[0050] 10 parts of hydroxyl-terminated polyphenylmethylsiloxane,

[0051] 5 parts of fumed silica,

[0052] 30 parts of aluminum hydroxide powder,

[0053] 0.5 parts of nanometer calcium carbonate,

[0054] Pigment paste (titanium dioxide pigment paste, made by mixing α, ω-dihydroxy polydimethylsiloxane and titanium dioxide, by weight percentage, α, ω-dihydroxy polydimethylsiloxane (viscosity 15,000-20,000 cs) 50%, titanium dioxide 50%) 15 parts,

[0055] 9 parts of crosslinking agent (3 parts of methyltrimethoxysilane + 3 parts of methyltriethoxysilane + 3 parts of vinyltriethoxysilane),

[0056] Coupling agent (1 part of silan...

Embodiment 3

[0066] Silicone room temperature curing anti-corrosion coating formulation:

[0067] α,ω-Dihydroxypolydimethylsiloxane (from low viscosity α,ω-dihydroxypolydimethylsiloxane with viscosity 500mPa.s~2000mPa.s to high viscosity 10000mPa.s~20000mPa.s Viscosity α, ω-dihydroxy polydimethylsiloxane mixed according to the volume ratio of 1:2) 30 parts,

[0068] 8 parts of hydroxyl-terminated polyphenylmethylsiloxane,

[0069] 3 parts of fumed silica,

[0070] 20 parts of aluminum hydroxide powder,

[0071] 2 parts of nanometer calcium carbonate,

[0072] Pigment paste (pigment paste is carbon black paste, which is made by mixing α, ω-dihydroxypolydimethylsiloxane and carbon black, by weight percentage, α, ω-dihydroxypolydimethylsiloxane (viscosity of 15,000 to 20,000 cs) 60%, carbon black 40%) 10 parts,

[0073] 6 parts of crosslinking agent (vinyl tributylketoxime base silane),

[0074] 1.5 parts of coupling agent (diethylaminomethyltriethoxysilane (ND-22)),

[0075] Catalyst ...

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Abstract

The invention discloses an organosilicone room-temperature-cured anticorrosive coating material. The organosilicone room-temperature-cured anticorrosive coating material is prepared through mixing the following raw material ingredients in parts by weight: 24-40 parts of alpha,omega-dihydroxyl polydimethyl siloxane, 6-10 parts of hydroxy-terminated polyphenylmethyl siloxane, 0.5-5 parts of aerosil, 10-30 parts of aluminum hydroxide powder, 0.5-5 parts of nano calcium carbonate, 5-15 parts of pigment slurry, 5-9 parts of cross-linking agent, 1-2 parts of coupling agent, 0.1-1 part of catalyst, 1-2 parts of modified polytetrafluoroethylene powder and 5-10 parts of thinning agent. According to the coating material disclosed by the invention, coating layers can form uniform and fine paint films, are very good in flexibility and are free of erosion resulting from harsh climate environments and corrosive medium environments; the coating material disclosed by the invention is cured at room temperature, is simple in construction, is directly coated, can be subjected to brush coating and roller coating and can also be subjected to spray coating; the adhesion of the paint films reaches the level 1; the paint films are waterproof and dustproof; the impact resistance is excellent; and the heat and weather resistance and flame retardance are also very excellent.

Description

technical field [0001] The invention relates to an organosilicon coating, in particular to an organosilicon room temperature curing anticorrosion coating. Background technique [0002] Atmospheric corrosion in the natural environment is the most common form of metal corrosion. If the humidity in the air increases, pollutants increase, and the temperature rises, the corrosion phenomenon will intensify. Corrosion ability is drastically reduced. [0003] Organosilicon is the first elemental organic polymer compound widely used. It has excellent performance due to its unique chemical structure. It is widely used in various fields of national economy and occupies a very important position in the coating industry. Silicone coatings are coatings with silicone polymers or silicone modified polymers as the main film-forming substance. It has excellent heat and cold resistance, electrical insulation, corona resistance, radiation resistance, moisture resistance and hydrophobicity, wea...

Claims

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Application Information

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IPC IPC(8): C09D183/06C09D127/22C09D5/08C09D5/18C09D7/12C08F14/26C08F8/00
Inventor 陈世龙刘华张宝华岳世德张春辉柳时允
Owner 浙江香林新材料有限公司
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