Fluoropolymer coating solution and weather-resistant coating obtained therefrom

A technology of fluoropolymer and coating liquid, which is applied in the direction of coating, etc., can solve the problems of restricting the performance of fluoromaterials, the weather resistance of adhesives, the equivalent of fluoromaterials in chemical corrosion resistance, and the failure of the excellent characteristics of fluoromaterials to be realized as expected. , to achieve the effect of environmental protection, good chemical resistance and bright appearance

Inactive Publication Date: 2012-12-26
刘建林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, at present, in the application fields of various fluorine materials (except sintering process), it is necessary to use various adhesives to bond fluorine materials and substrates, and most adhesives are excellent in weather resistance and chemical corrosion resistance. And other aspects of the performance can not be equal to the fluorine

Method used

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  • Fluoropolymer coating solution and weather-resistant coating obtained therefrom
  • Fluoropolymer coating solution and weather-resistant coating obtained therefrom
  • Fluoropolymer coating solution and weather-resistant coating obtained therefrom

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] According to the following ratio, add polyvinylidene fluoride (PVDF) and dimethyl sulfoxide into a heatable container, and heat to 50°C-60°C under stirring to dissolve completely. After the temperature reaches 50°C-20°C, add the product of the crosslinking tackifier structural formula ①, stir and mix thoroughly to obtain the coating liquid (1). The coating solution does not produce gel phenomenon when stored at 10°C-40°C for 180 days, and has good storage stability.

[0029]

[0030] The coating solution (1) was sprayed on the aluminum plate, cured at room temperature for 30 minutes, and the coating thickness was 10 μm. The coating was divided into 1 cm squares with a knife, and the adhesive tape could not be peeled off.

Embodiment 2

[0032]According to the following ratio, add tetrafluoroethylene and ethylene copolymer (ETFE) and N-dimethylformamide into a heatable container, and heat to 50°C-60°C under stirring to dissolve completely. After the temperature reaches 50°C-20°C, add the product of the crosslinking tackifier structural formula ②, stir and mix thoroughly to obtain the coating liquid (2). The coating solution does not produce gel phenomenon when stored at 10°C-40°C for 180 days, and has good storage stability.

[0033]

[0034] The coating solution (2) was coated onto a polyester (PET) substrate by a printing machine at a line speed of 100 m / min and a coating thickness of 20 μm. After the machine was off the machine, it could not be peeled off with an adhesive tape.

Embodiment 3

[0036] According to the following ratio, polyvinylidene fluoride (PVDF) and N-methylpyrrolidone, ethyl acetate, (mixing weight ratio 1: 1); titanium dioxide, antioxidant is added in a heatable container, and in Heat to 70°C-80°C while stirring, and dissolve completely. After the temperature reaches 30°C-20°C, add the product of the crosslinking tackifier structural formula ③, stir and mix thoroughly to obtain the coating liquid (3). The coating solution does not produce gel phenomenon when stored at 10°C-40°C for 180 days, and has good storage stability.

[0037]

[0038] The coating liquid (3) was coated on the steel plate by roller coating method, cured at room temperature for 30 minutes, and the coating thickness was 35 μm. The coating was divided into 1 cm squares with a knife, and the adhesive tape could not be peeled off.

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Abstract

The invention relates to a fluoropolymer coating solution and a weather-resistant coating obtained therefrom. Fluoroplastics have excellent dielectric property and chemical corrosion resistance, high and low temperature resistance, and other excellent weatherability. At the same time, fluoroplastics also have the properties of waterproofness, no stickness, low friction coefficient, and good self-lubricating performance, etc. Currently, fluoroplastics are widely used in chemicals, electronics, electrical engineering, aviation, aerospace, semiconductors, machinery, textiles, construction, medicines, automobiles and other industrial fields. However, due to the intrinsic characteristics of fluoroplastics, the processing difficulty is very large. After long-term in-depth study, the inventor of the invention finds that the fluoropolymer coating solution provided in the invention can overcome the above disadvantages in the prior art. The coating obtained from the fluoropolymer coating solution provided in the invention has the characteristics of high fluorocarbon content, room temperature curing, good bonding strength with various substrates, no need of adhesive, convenient use and the like. The coating solution can be subjected to on-site construction under a variety of circumstances, and while improving the using performance, the use cost is reduced.

Description

Technical field: [0001] The invention relates to a fluoropolymer coating solution, in particular to a solvent-based fluoropolymer coating solution. A coating having high weather resistance, high chemical resistance, and excellent barrier properties against various gases including water vapor can be obtained from the coating liquid. Background technique: [0002] Fluoroplastics have excellent dielectric properties, chemical corrosion resistance, high and low temperature resistance and other excellent weather resistance. At the same time, it also has the properties of waterproof, non-stick, low friction coefficient, good self-lubricating property and so on. At present, fluoroplastics have been widely used in chemical industry, electronics, electrical, aviation, aerospace, semiconductor, machinery, textile, construction, medicine, automobile and other industrial fields. However, due to the characteristics of fluoroplastics, processing is very difficult. Because its melting p...

Claims

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Application Information

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IPC IPC(8): C09D127/16C09D127/18C09D123/08C09D127/20C09D127/14C09D127/12C09D129/10C09D7/12
Inventor 刘建林
Owner 刘建林
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