High-weather-resistance fluorocarbon coating and preparation method thereof

A fluorocarbon coating and weather resistance technology, used in anti-corrosion coatings, coatings, building insulation materials, etc., can solve the problems of poor crack followability of fluorocarbon coatings, and achieve the effect of good concrete crack followability, simple method and easy operation.

Active Publication Date: 2019-11-15
GUANGXI UNIVERSITY OF TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention overcomes the technical problems of poor crack followability of fluorocarbon coatings in the prior art, and provides a high weather resistance fluorocarbon coating and its preparation method

Method used

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  • High-weather-resistance fluorocarbon coating and preparation method thereof
  • High-weather-resistance fluorocarbon coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A high weather resistance fluorocarbon coating, which consists of the following raw materials in parts by mass:

[0029] 100 parts of FEVE fluorocarbon resin, 10 parts of modified resin, 20 parts of pigment and filler, 1 part of additive, 20 parts of organic solvent, and 10 parts of curing agent.

[0030] The organic solvent is butyl acetate, the pigment and filler is rutile titanium dioxide, the additives are leveling agent, wetting and dispersing additive and light stabilizer, the leveling agent is BYK-306, and the wetting The dispersing aid is BYK-163, the light stabilizer is Ciba 5060, the curing agent is HDI trimer curing agent, and the modified resin is polyvinylidene fluoride and poly(meth)acrylate resin. Two species are mixed in equal mass ratio.

[0031] The FEVE fluorocarbon resin is formed by copolymerization of the following raw materials in parts by weight:

[0032] 100 parts of chlorotrifluoroethylene monomer, 18 parts of alkyl vinyl ether monomer, 25 pa...

Embodiment 2

[0039] A high weather resistance fluorocarbon coating, which consists of the following raw materials in parts by mass:

[0040] 30 parts of FEVE fluorocarbon resin, 100 parts of modified resin, 1 part of pigment and filler, 20 parts of auxiliary agent, 40 parts of curing agent.

[0041]Wherein, the modified resin is polyvinylidene fluoride, and the pigment and filler are lithopone and white powder. The additives are leveling agent, defoamer, wetting and dispersing aid, light stabilizer, matting agent; The agent is polydimethylsiloxane, polymethylalkylsiloxane, organically modified polysiloxane fluoride, modified acrylic acid, phosphoric acid ester modified acrylic acid; the defoaming agent is high carbon alcohol fatty acid ester compound, polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropanolamine ether, polyoxypropylene glyceryl ether, polydimethylsiloxane; the wetting and dispersing additive is a linear alkylamide Classes, branched polycarbo...

Embodiment 3

[0049] A high weather resistance fluorocarbon coating, which consists of the following raw materials in parts by mass:

[0050] 67 parts of FEVE fluorocarbon resins, 80 parts of modified resins, 15 parts of pigments and fillers, 10 parts of auxiliary agents, 10 parts of organic solvents, and 16 parts of curing agents; the modified resins are poly(meth)acrylate resins. The pigments and fillers are red iron oxide and toluidine red, the curing agent is toluene diisocyanate, the organic solvent is xylene, and the auxiliary agent is a leveling agent, a defoamer, a matting agent; the leveling agent It is polydimethylsiloxane and polymethylalkylsiloxane; the defoamer is high-carbon alcohol fatty acid ester complex, polyoxyethylene polyoxypropylene pentaerythritol ether, and the matting agent is ED-30 .

[0051] The FEVE fluorocarbon resin is formed by copolymerization of the following raw materials in parts by weight:

[0052] 80 parts of chlorotrifluoroethylene monomer, 56 parts o...

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Abstract

The invention discloses a high-weather-resistance fluorocarbon coating and a preparation method thereof. The high-weather-resistance fluorocarbon coating is composed of the following raw materials: 30to 100 parts of FEVE fluorocarbon resin, 10 to 100 parts of modified resin, 1 to 20 parts of a pigment filler, 1 to 20 parts of an auxiliary agent, 0 to 20 parts of an organic solvent and 10 to 40 parts of a curing agent, wherein the FEVE fluorocarbon resin is prepared from the following raw materials in parts by weight: 30 to 100 parts of a chlorotrifluoroethylene monomer, 18 to 70 parts of an alkyl vinyl ether monomer, 1 to 25 parts of a diene monomer, 1 to 25 parts of a comonomer A, 0.5 to 10 parts of an initiator and 3 to 8 parts of an organic solvent. According to the invention, the diene monomer, such as butadiene and isoprene, is introduced as a functional monomer to copolymerize with the chlorotrifluoroethylene monomer, and diene has excellent chain flexibility and corrosion resistance, can increase the flexibility of a polymer chain and effectively improves the crack followability of resin, so the high-weather-resistance fluorocarbon coating provided by the invention can meetthe protection demands of concrete under extreme climatic conditions, and prolongs the service life of buildings like hydraulic concrete dams.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a highly weather-resistant fluorocarbon coating and a preparation method thereof. Background technique [0002] Due to the effect of internal and external factors, concrete structures are prone to cracks, which lead to the deterioration of concrete. Especially in some areas with large temperature changes, concrete is more prone to cracks due to significant differences in temperature between day and night, making its interior vulnerable to the intrusion of water vapor, chemicals and titanium dioxide, thereby affecting the service life of concrete structures. The use of protective coatings can protect the concrete from being attacked by the outside world, and can effectively improve the life of the concrete structure. At present, the commonly used concrete protective coatings include silicone, fluorocarbon resin layer, epoxy resin, polyurethane, polyurea and other prote...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C09D127/12C09D127/16C09D133/04C09D5/08E04B1/62E04B1/64C08F214/24C08F220/06C08F220/14C08F220/18C08F220/04C08F236/06C08F236/08C08F216/18
CPCC09D127/12C09D127/16C09D133/04C09D5/08E04B1/62C08F214/247C08L2205/02C08L2205/03C08F220/06C08F220/14C08F220/04C08F236/06C08F236/08C08F216/18C08L27/16C08L33/04C08L27/12
Inventor左华江唐春怡胡孝勇姚剑松徐然李彦鹏
OwnerGUANGXI UNIVERSITY OF TECHNOLOGY