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Environment-friendly type nontoxic fluorine contained coating for coiled material

A coil coating, an environmentally friendly technology, applied in the direction of coating, etc., can solve the problems of poor mechanical properties such as coating adhesion, pollution of the environment, and harm to human body, etc. It is not easy to be damaged by ultraviolet rays, has excellent weather resistance, and increases density. sexual effect

Inactive Publication Date: 2005-11-30
上海依多科化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially for high-weather-resistant coil coatings, most of them currently use high-molecular-weight polyvinylidene fluoride resin (PVDF) fluorocarbon topcoats and polyurethane or epoxy primers. These primers have good adhesion, excellent corrosion resistance, and low cost. characteristics, but most of these primers contain chromium-containing anti-rust pigments, which are harmful to the human body and pollute the environment
Epoxy primers are sensitive to ultraviolet rays, especially when combined with metal topcoats, which are easily damaged by ultraviolet rays and cannot achieve a 20-year weather resistance guarantee
The compatibility between the polyurethane primer and the PVDF topcoat is poor, and the mechanical properties such as the adhesion of the entire coating are not good

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] a. Add 80 grams of polymethyl methacrylate resin, 50 grams of organic solvent, 30 grams of alkali ion exchange antirust dye, 120 grams of rutile titanium dioxide powder and 12 grams of additives (linear alkane) in a container with a high-speed stirrer. 8 grams of wetting and dispersing agent + 4 grams of silane leveling agent), after high-speed stirring, put into the sand mill and disperse, and make the pigment concentrate slurry with fineness less than 30 microns for use; b, PVDF resin After mixing 60 grams with 220 grams of organic solvent and dispersing completely, add the pigment concentrate in step a and 40 grams of polymethyl methacrylate, and fully stir to obtain the product.

Embodiment 2

[0025] a. Add 120 grams of methacrylic acid copolymer, 50 grams of organic solvent, 60 grams of alkali ion exchange antirust dye, 70 grams of rutile titanium dioxide powder and 18 grams of additives in a container with a high-speed stirrer (linear alkane wetting Dispersant 11 grams+silane class leveling agent 7 grams), after high-speed stirring, put into the sand mill and disperse in the sand mill, make the pigment concentrate slurry that fineness is less than 30 microns stand-by; b, PVDF resin 110 grams and Mix 130 grams of organic solvent, and after the dispersion is complete, add the pigment concentrate and 60 grams of methacrylic acid copolymer in step a, and stir thoroughly to obtain the product.

Embodiment 3

[0027] a. Add 30 grams of polymethyl methacrylate resin, 50 grams of organic solvent, 90 grams of alkali ion exchange antirust dye, 60 grams of rutile titanium dioxide powder and 15 grams of additives (linear alkane) in a container with a high-speed stirrer. 10 grams of wetting and dispersing agent + 5 grams of acrylic acid leveling agent), after high-speed stirring, put into the sand mill and disperse in the sand mill, make the pigment concentrate slurry that fineness is less than 30 microns stand-by; b, PVDF resin After mixing 180 grams with 160 grams of organic solvent and dispersing completely, add the pigment concentrate in step a and 30 grams of methacrylic acid copolymer, and fully stir to obtain the product.

[0028]

[0029] The matching performance of the fluorine-containing primer of the present invention and the polyurethane primer on the fluorocarbon topcoat is compared.

[0030] Fluorine primer

[0031] Fluorocarbon products have high requir...

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PUM

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Abstract

The invention relates to environment-friendly fluorine-containing coiled material using paint used in building colored plate and supporting fluorine-carbon finish, that is environment-friendly fluorine-containing priming paint. The weight ratio of the component is as following: fluoro-resin 10-30 percent, acrylic resin 10-30 percent, titanium dioxide 10-20 percent, rust-preventive pigment 5-15 percent. 2-3 percent and organic solvent 30-50 percent. The fluorine-containing priming paint uses acrylic resin as the carrier, blending PVDF resin (polyvinylidene fluoride resin) with acrylic resin and melting to prepare film, adding little adjuvant, roasting in a high temperature and curing to prepare tough paint film. Having the same structure of PVDF resin in fluorine carbon finish, when coating finish, fluoro-resin melts at the same time in priming paint and finish, permeates each other and cures to be film, the compactness of whole covering nice.

Description

technical field [0001] The invention relates to an environment-friendly fluorine-containing coil coating used for high weather-resistant architectural color-coated panels matched with a fluorocarbon topcoat, that is, an environment-friendly fluorine-containing primer. Background technique [0002] With the vigorous development of the construction industry, there is a great demand for color-coated panels (steel plates, aluminum-plastic panels, etc.). Especially for high-weather-resistant coil coatings, most of them currently use high-molecular-weight polyvinylidene fluoride resin (PVDF) fluorocarbon topcoats and polyurethane or epoxy primers. These primers have good adhesion, excellent corrosion resistance, and low cost. Features, but most of these primers contain chromium-containing antirust pigments, which are harmful to humans and pollute the environment. Epoxy primers are sensitive to ultraviolet rays, especially when combined with metal topcoats, which are easily damage...

Claims

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Application Information

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IPC IPC(8): C09D127/12
Inventor 俞剑峰史志宏石剑峰苏狄曹元杰
Owner 上海依多科化工有限公司
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