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High-transparency super-tough ETFE film and preparation method thereof

A transparent and thin film technology, applied in flat products, other household appliances, applications, etc., can solve the problems of low toughness of ETFE film and affect the transparency of the film, and achieve the effect of ensuring crystallinity

Inactive Publication Date: 2021-08-17
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 purpose of the invention is to solve the problem that the additives in ETFE affect the transparency of the film, and the toughness of the ETFE film is low, and provide a highly transparent and super-tough ETFE film and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Weigh the materials according to the proportion, including 50 parts of ethylene-tetrafluoroethylene copolymer, 50 parts of crystallization inhibitor, and 0.5 part of antioxidant. The crystallization inhibitor is perfluoropropylmethyl polyethacrylate. The antioxidant is selected from 1,1,3-tris(2-methyl-4-hydroxy-5-tert-butylphenyl)butane, tris[2.4-di-tert-butylphenyl]phosphite, N, One of N'-di(β-naphthyl)-p-phenylenediamine and bis-(3,4-epoxycyclohexyl)methyl adipate.

[0026] Put the materials into a high mixer for mixing, and then place them in a twin-screw extruder for extrusion and granulation. The aspect ratio of the twin-screw extrusion granulator used is 28-40, and the screw compression ratio is 1.8-2.2 , The extrusion processing temperature is 200-300°C.

[0027] The mixed and granulated materials are dried and placed in a casting extruder to melt and extrude to form a film. The melt temperature is 300 ° C, the diameter of the primary cooling roll is 500 mm, a...

Embodiment 2

[0029] Weigh the materials according to the proportion, including 65 parts of ethylene-tetrafluoroethylene copolymer, 25 parts of crystallization inhibitor, and 1 part of antioxidant. The crystallization inhibitor is perfluoropropylmethyl polyethacrylate. The antioxidant is selected from 1,1,3-tris(2-methyl-4-hydroxy-5-tert-butylphenyl)butane, tris[2.4-di-tert-butylphenyl]phosphite, N, One of N'-di(β-naphthyl)-p-phenylenediamine and bis-(3,4-epoxycyclohexyl)methyl adipate.

[0030] Put the materials into a high mixer for mixing, and then place them in a twin-screw extruder for extrusion and granulation. The aspect ratio of the twin-screw extrusion granulator used is 28-40, and the screw compression ratio is 1.8-2.2 , The extrusion processing temperature is 200-300°C.

[0031] The mixed and granulated materials are dried and placed in a casting extruder to melt and extrude to form a film. The melt temperature is 300 ° C, the diameter of the primary cooling roll is 800 mm, and...

Embodiment 3

[0033] Weigh the materials according to the proportion, including 75 parts of ethylene-tetrafluoroethylene copolymer, 35 parts of crystallization inhibitor, and 2 parts of antioxidant. The crystallization inhibitor is perfluoropropylmethyl polyethacrylate. The antioxidant is selected from 1,1,3-tris(2-methyl-4-hydroxy-5-tert-butylphenyl)butane, tris[2.4-di-tert-butylphenyl]phosphite, N, One of N'-di(β-naphthyl)-p-phenylenediamine and bis-(3,4-epoxycyclohexyl)methyl adipate.

[0034] Put the materials into a high mixer for mixing, and then place them in a twin-screw extruder for extrusion and granulation. The aspect ratio of the twin-screw extrusion granulator used is 28-40, and the screw compression ratio is 1.8-2.2 , The extrusion processing temperature is 200-300°C.

[0035] The mixed and granulated materials are dried and placed in a casting extruder to melt and extrude to form a film. The melt temperature is 330 ° C, the diameter of the primary cooling roll is 1200 mm, a...

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Abstract

The invention discloses a high-transparency super-tough ETFE film and a preparation method thereof. The method comprises the following steps: step 1, weighing materials according to a ratio, and mixing; wherein the materials comprise 50 to 90 parts of an ethylene-tetrafluoroethylene copolymer, 10 to 50 parts of a crystallization inhibitor and 0.5 to 3 parts of an antioxidant; step 2, extruding and granulating; and 3,placing the granulated materials in a casting extruder to be subjected to melt extrusion to form a film, wherein the melt temperature ranges from 330 DEG C to 350 DEG C, the diameter of a primary cooling roller ranges from 500 mm to 1500 mm, the temperature of the primary cooling roller ranges from 50 DEG C to 100 DEG C, and the finally- prepared film has the diameter ranging from 20 micrometers to 300 micrometers. The ETFE film provided by the invention is high in light transmittance and good in toughness, and is not easy to break at a high temperature.

Description

technical field [0001] The invention relates to the technical field of ETFE films, in particular to a highly transparent and super-tough ETFE film and a preparation method thereof. Background technique [0002] The Chinese name of ETFE is ethylene-tetrafluoroethylene copolymer. ETFE not only has excellent impact resistance, electrical properties, thermal stability and chemical corrosion resistance, but also has high mechanical strength and good processing performance. It is a very important basic material in LED packaging and semiconductor packaging. [0003] CN106279946 invention discloses a kind of ETFE film and its manufacturing method, it allows ceramic fiber to disperse in ETFE film through a series of additives, thereby allows ETFE film to obtain higher wear resistance; CN107286447 discloses a kind of ETFE film and its preparation method, which endows the ETFE film with better thermal conductivity, high thermal emissivity and low thermal resistance by adding graphene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L33/16C08K5/13C08K5/526C08K5/18C08K5/1515C08J5/18B29D7/01
CPCC08J5/18B29D7/01C08J2323/08C08J2433/16C08K5/13C08K5/526C08K5/18C08K5/1515
Inventor 曹厚宝杨云霞郝子坤郑淑娜
Owner 日氟荣高分子材料(上海)有限公司
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