A kind of spray PVDF fluorocarbon self-cleaning varnish and preparation method thereof

A fluorocarbon self-cleaning type and varnish technology, which is applied in the direction of coating, etc., can solve the problems that the cleaning effect has not been studied and the cleaning effect is not maintained for a long time, and achieves a wide range of applicable temperatures, good adhesion, and reduced maintenance costs. Effect

Active Publication Date: 2017-03-29
GUANGDONG TESTING INST OF PROD QUALITY SUPERVISION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, the above-mentioned fluorocarbon coatings only clean the large particle pollutants in the air pollutants, and the cleaning effect on the small particle pollutants harmful to the human body has not been studied, and the self-cleaning effect does not last long, up to 20 years

Method used

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  • A kind of spray PVDF fluorocarbon self-cleaning varnish and preparation method thereof
  • A kind of spray PVDF fluorocarbon self-cleaning varnish and preparation method thereof
  • A kind of spray PVDF fluorocarbon self-cleaning varnish and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] The sprayed PVDF fluorocarbon self-cleaning varnish provided in this embodiment is mainly composed of component A and component B, and component A is made of the following raw materials in proportion by mass:

[0060]

[0061] B component

[0062] Polyisocyanate curing agent 4.

[0063] PVDF fluorocarbon resin is polyvinylidene fluoride.

[0064] Acrylic resins are thermoplastic acrylic resins.

[0065] The solvent is toluene.

[0066] Fluorocarbon modified polysiloxane silicate compound is made of fluorocarbon modified polysiloxane, silicate, solvent and wetting and dispersing agent, fluorocarbon modified polysiloxane, silicate and The mass ratio of the three solvents is 2.5:6:1.5, and the amount of the wetting and dispersing agent accounts for 1.5% of the total mass of the fluorocarbon-modified polysiloxane, the silicate and the solvent.

[0067] Fluorocarbon modified polysiloxane is fluorine modified polysiloxane compound (model MCK-2130, Guangzhou Qiansong Po...

Embodiment 2

[0087] The sprayed PVDF fluorocarbon self-cleaning varnish provided in this embodiment is mainly composed of component A and component B, and component A is made of the following raw materials in proportion by mass:

[0088]

[0089] B component

[0090] Polyisocyanate curing agent 3.

[0091] The PVDF fluorocarbon resin is polyvinylidene fluoride.

[0092] Acrylic resins are thermosetting acrylic resins.

[0093] The solvent is the dibasic acid ester mixture DBE.

[0094] Fluorocarbon modified polysiloxane silicate compound is made of fluorocarbon modified polysiloxane, silicate, solvent and wetting and dispersing agent, fluorocarbon modified polysiloxane, silicate and The mass ratio of the three solvents is 1:7:1, and the amount of the wetting and dispersing agent accounts for 1% of the total mass of the fluorocarbon-modified polysiloxane, the silicate and the solvent.

[0095] Fluorocarbon modified polysiloxane is fluorine modified polysiloxane compound (model MCK-21...

Embodiment 3

[0116] The sprayed PVDF fluorocarbon self-cleaning varnish provided in this embodiment is mainly composed of component A and component B, and component A is made of the following raw materials in proportion by mass:

[0117]

[0118] B component

[0119] Polyisocyanate curing agent 2.

[0120] Among them, the PVDF fluorocarbon resin is polyvinylidene fluoride multi-polymer.

[0121] Acrylic resin is a mixture of thermoplastic acrylic resin and thermosetting acrylic resin, the mass ratio of the two is 1:1.

[0122] The solvent is a mixture of isophorone and butanone, and the volume ratio of the two is 1:1.

[0123] Fluorocarbon modified polysiloxane silicate compound is made of fluorocarbon modified polysiloxane, silicate, solvent and wetting and dispersing agent, fluorocarbon modified polysiloxane, silicate and The mass ratio of the three solvents is 1.5:6.5:1.5, and the amount of the wetting and dispersing agent accounts for 2% of the total mass of the fluorocarbon-modi...

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Abstract

The invention discloses a spray-coating PVDF (polyvinylidene fluoride) fluorocarbon self-cleaning varnish which is composed of a component A and a component B. The component A is prepared from the following raw materials in parts by mass: 40-50 parts of PVDF fluorocarbon resin, 10-25 parts of acrylic resin, 15-20 parts of solvent, 15-20 parts of fluorocarbon modified polysiloxane silicate compound, 1-2 parts of assistant and 3-5 parts of polystyrene. The component B is prepared from the following raw material in parts by mass: 2-5 parts of polyisocyanate curing agent. The spray-coating PVDF fluorocarbon self-cleaning varnish has better self-cleaning effect, can keep the self-cleaning effect on the granule pollutants for a long time (up to 50 years), can lower the building external wall cleaning frequency and the maintenance cost. The invention also discloses a manufacturing method of the spray-coating PVDF fluorocarbon self-cleaning varnish.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a spraying PVDF fluorocarbon self-cleaning varnish and a preparation method thereof. Background technique [0002] As a high-performance coating product, fluorocarbon coating is a new type of coating material based on fluorine-containing resin as the main film-forming material, which is modified and processed on the basis of fluorine resin. The main feature of fluorocarbon coatings is that the resin contains a large number of F-C bonds, and the bond energy is 485kJ / mol, which is much higher than the C-H bond energy (413kJ / mol). Therefore, under light, thermal environment, or strong chemical corrosion environment, the F-C bond can still maintain a stable state, thus showing the ultra-long weather resistance, outstanding salt spray resistance and chemical medium corrosion resistance of fluorocarbon coatings as a A new type of high weather resistance coating, fluorocar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D127/16C09D133/00C09D183/04C09D7/12
Inventor 陈满英海凌超路风辉丘子范陈纪文刘付建
Owner GUANGDONG TESTING INST OF PROD QUALITY SUPERVISION
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