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High-temperature-resistant colored fluororesin film, preparation method and application thereof

A technology of colored fluororesin and high temperature resistance, which is applied in the processing technology field of colored films, which can solve the problems of discoloration and blackening of films, affecting the appearance, etc., and achieve the effects of pure color, good durability and good weather resistance

Inactive Publication Date: 2017-09-15
日氟荣高分子材料(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The usual color masterbatch or organic pigments are mixed with fluororesin pellets and processed together. When the temperature reaches above 380, it will be carbonized and decomposed, making the whole film change color and black, and there are carbonized particles on the surface of the film, which will affect the appearance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0019] The preparation method of the film comprises:

[0020] Step 1, preparation of fluororesin masterbatch: 30-50% organic pigment, 45-65% fluororesin and 5-10% dispersant are blended at 350-400°C and granulated to obtain fluororesin masterbatch , as a percentage of the total weight of the masterbatch;

[0021] Step 2, take 90-99 parts by weight of fluororesin, 0.5-9.5 parts by weight of fluororesin color masterbatch and 0.5-5 parts by weight of lubricant, blend, melt extrude, and cast into a film to obtain high-temperature resistant colored fluorine Resin film.

Embodiment 1

[0024] Preparation of fluororesin color masterbatch: by the quinacridone red of 30 parts by weight, the FEP (perfluoroethylene propylene copolymer) of 65 parts by weight and the dispersant of 5 parts by weight (melting point range is the crystallite of 77-80 ℃ Wax) blended at 350-400°C for about 20 minutes, and granulated to obtain fluororesin color masterbatch.

[0025] Prepare high-temperature-resistant colored fluororesin film: get 90 parts by weight of FEP, 9.5 parts by weight of fluororesin color masterbatch and 0.5 part by weight of lubricant (polyethylene wax), blend, melt extrude, cast into a film, and make a resistant High temperature colored fluororesin film, thickness 20μm.

[0026] The color of the film is pure, uniform and soft, the film surface is clean, no scratches, smooth surface, stain-resistant, easy to peel off, and can be used as a release film in the manufacturing process of aircraft wings; it has a good touch and is not sticky; after testing, The film c...

Embodiment 2

[0028] Prepare fluororesin masterbatch: by the phthalocyanine blue of 40 weight parts, the ETFE (ethylene-tetrafluoroethylene copolymer) of 50 weight parts and the dispersant of 10 weight parts (melting point scope is the microcrystalline wax of 77-80 ℃ ) blended at 350-400°C for about 20 minutes, and granulated to obtain fluororesin color masterbatch.

[0029] Preparation of high-temperature-resistant colored fluororesin film: take 99 parts by weight of ETFE, 0.5 part by weight of fluororesin masterbatch and 0.5 part by weight of lubricant (oxidized polyethylene wax), blend, melt extrude, and cast into a film to obtain High temperature resistant colored fluororesin film, thickness 80μm.

[0030] The color of the film is pure, uniform and soft, the film surface is clean, no scratches, smooth surface, stain-resistant, easy to peel off, and can be used as a release film in the manufacturing process of aircraft wings; it has a good touch and is not sticky; after testing, The fil...

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Abstract

The invention discloses a high-temperature-resistant colored fluororesin film, a preparation method and application thereof. The film is prepared through blending and melt extrusion of fluororesin and fluororesin color master batch, the film is formed through curtain coating, the fluororesin is a mixture selected from any one or more than any two of FEP, ETFE or ECTFE and PFA, the fluororesin color master batch is obtained by blending 30% to 50% of an organic pigment, 45% to 65% of fluororesin and 5% to 10% of a dispersing agent according to the percentages accounting for total weight of the color master batch for 20 to 50 minutes and pelleting, and the processing temperature is 350 to 400 DEG C. According to the method provided by the invention, the fluororesin and the fluororesin color master batch are easily and sufficiently mixed, the film can be formed through curtain coating and extrusion as long as a small amount of a lubricating agent is needed, and the prepared colored film can be resistant to high temperature and can be used for release films in the manufacturing process of aircraft wings in the field of aerospace.

Description

technical field [0001] The invention relates to a processing technology of a colored film, in particular to a high-temperature-resistant colored fluororesin film, its preparation method and application. Background technique [0002] Inorganic pigments are traditional plastic colorants. Although their tinting strength is poor, they have excellent heat resistance, weather resistance, and migration resistance, and are inexpensive. Although they often contain heavy metals, their toxicity issues limit their use. [0003] Organic pigments have become an important colorant for plastics due to their wide variety, bright color, high tinting strength, and excellent application performance. The color of the colored film is heterogeneous and the durability is not strong, which cannot meet the needs of the aerospace field for the colored film. For example, the release film in the manufacturing process of aircraft wings needs to be colored in order to improve recognition. However, due t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/18C08L23/08C08L23/06C08L23/30C08J5/18
CPCC08L27/18C08J5/18C08J2327/18C08J2427/18C08L23/0892C08L2201/08C08L2203/16C08L2205/025C08L2205/035C08L23/06C08L23/30
Inventor 山口达雄
Owner 日氟荣高分子材料(上海)有限公司
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