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ETFE (Ethyl Tetra Fluoro Ethylene) thin film as well as preparation method and application thereof

A technology of film and functional additives, which is applied in the field of ETFE film and its preparation, can solve the problems that film technology is difficult to master, and achieve the effect of excellent stretchability and large application prospects

Active Publication Date: 2013-09-04
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

[0006] However, it is difficult to master the technology of mixing ETFE particle raw materials with additives to make a film with uniform thickness, sufficient raw material dissolution, and no wrinkles.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The following raw materials are calculated in parts by weight:

[0031] 100 parts of ETFE;

[0032] 0.1 parts of PFA;

[0033] Among them, the melt index of ETFE is 7.

[0034] Step 1, add the above-mentioned ETFE, PFA to the high mixer, and fully mix;

[0035] Step 2, granulating the above-mentioned mixture to make granules;

[0036] Step 3, adding the above granules to a screw extruder, heating to 170-235°C, melt extruding, and forming a film through a flat die;

[0037] Step 4, cooling the formed film at 90-120°C by a cooling roller, and drying in vacuum;

[0038] Step 5, lower the temperature again by 10~20°C, and after the film is hardened, use a roller with an adhesive layer to press the surface of the film, so that the dust is glued away by the roller (step 5 may not be performed if the requirements for dust are not high);

[0039] Step 6, trimming and winding to obtain the ETFE film.

[0040] The film product has a thickness of 50 μm, a width of 1250 mm, a...

Embodiment 2

[0042] The following raw materials are calculated in parts by weight:

[0043] 100 parts of ETFE;

[0044] PVDF 7 copies;

[0045] Among them, the melt index of ETFE is 10.

[0046] Weigh the raw materials of the above formula, and make a film according to the method described in Example 1; the film product has a thickness of 50 μm, a width of 1250 mm, a transparent color, and a bright surface, which can be used as a solar backplane film. The performance measurement results of the film product are shown in Table 1.

Embodiment 3

[0048] The following raw materials are calculated in parts by weight:

[0049] 100 parts of ETFE;

[0050] 10 parts of PFA;

[0051] PMMA 10 copies;

[0052] Among them, the melt index of ETFE is 15.

[0053] Weigh the raw materials of the above formula, and make a film according to the method described in Example 1; the film product has a thickness of 50 μm, a width of 1250 mm, a transparent color, and a bright surface. The performance measurement results of the film product are shown in Table 1.

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Abstract

The invention discloses an ETFE (Ethyl Tetra Fluoro Ethylene) thin film as well as a preparation method and an application thereof. The thin film is made of ETFE and a functional addition agent, and the processing temperature is 170-235 DEG C, wherein the use amount ratio of the ETFE to the functional addition agent is 1: (0.1-30%) in weight percentage; the melt index of the ETFE is 7-30; and the functional addition agent comprises more than any one of a regular fluoroplastic addition agent and a regular engineering addition agent. The ETFE thin film disclosed by the invention has excellent stretchability, non-sticky performance, adsorption, non-toxicity and heat insulation, which reach, and even exceed common indexes of industries; and the ETFE thin film can be used for the fields of LED (Light Emitting Diode) release packages, semiconductor release packages, flexile solar cell packages, electronic release films, medical packages, agricultural thin films and the like.

Description

technical field [0001] The invention relates to an industrial film, in particular to an ETFE film and a preparation method thereof. The ETFE film is mainly used for LED release packaging, semiconductor release packaging, flexible solar cell packaging, electronic release film, medical packaging and Agricultural film and other fields. Background technique [0002] ETFE is the abbreviation of Ethylene-tetrafluoroethylene copolymer in English, and its Chinese name is ethylene-tetrafluoroethylene copolymer (ETFE), commonly known as fluoroplastic resin. It is a colorless and transparent particle formed by copolymerization of tetrafluoroethylene and ethylene in a certain proportion. Crystalline, with excellent scratch resistance and wear resistance, high temperature resistance, chemical resistance, good insulation properties of fluoroplastics. [0003] ETFE film, as a new type of transparent building material, has received widespread attention in recent years. The ETFE film used i...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L27/18C08L27/16C08L33/12B29C47/00
Inventor 山口达雄
Owner 日氟荣高分子材料(上海)有限公司
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