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Production method for black PVDF film

A production method, black technology, applied in applications, home appliances, flat products, etc., can solve problems such as unfavorable long-term use, poor strength, etc., achieve high strength, tight atomic bonding, and promote dispersion.

Inactive Publication Date: 2015-07-01
江苏昊华光伏科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this kind of film is not suitable for use in places that need to absorb sunlight. Even if the existing black film can help absorb sunlight, its strength is also poor, which is not conducive to long-term use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Mix the following mass percentage materials:

[0019] PVDF 400g

[0020] Polymethylmethacrylate 120g

[0021] Black polyester masterbatch 270g

[0022] Silane coupling agent 30g

[0023] Fluorinated active dispersant 150g

[0024] (2) After the above materials are mixed evenly, copper oxide nanoparticles with a mass percentage of 30g are added, fully mixed evenly, and dried.

[0025] (3) The dry material is melted for the first time and cooled under air flow; the temperature of the air flow is 35°C.

[0026] (4) The above-mentioned cooled material is melted for the second time, and the melt is cooled on the casting roll.

[0027] (5) Preheat the cooled material for longitudinal stretching and transverse stretching.

Embodiment 2

[0029] (1) Mix the following mass percentage materials:

[0030] PVDF 450g

[0031] Polymethylmethacrylate 120g

[0032] Black polyester masterbatch 250g

[0033] Silane coupling agent 30g

[0034] Fluorinated active dispersant 130g

[0035] (2) After the above materials are mixed evenly, copper oxide nanoparticles with a mass percentage of 20g are added, fully mixed evenly, and dried.

[0036] (3) The dry material is melted for the first time and cooled under air flow; the temperature of the air flow is 40°C.

[0037] (4) The above-mentioned cooled material is melted for the second time, and the melt is cooled on the casting roller.

[0038] (5) Preheat the cooled material for longitudinal stretching and transverse stretching.

Embodiment 3

[0040] (1) Mix the following mass percentage materials:

[0041] PVDF 430g

[0042] Polymethylmethacrylate 120g

[0043] Black polyester masterbatch 200g

[0044] Silane coupling agent 50g

[0045] Fluorinated active dispersant 150g

[0046] (2) After the above materials are mixed evenly, add copper oxide nanoparticles with a mass percentage of 50g, mix well, and dry.

[0047] (3) The dry material is melted for the first time and cooled under air flow; the temperature of the air flow is 45°C.

[0048] (4) The above-mentioned cooled material is melted for the second time, and the melt is cooled on the casting roller.

[0049] (5) Preheat the cooled material for longitudinal stretching and transverse stretching.

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Abstract

The invention discloses a production method for a black PVDF film. The method includes the steps of: (1) mixing the following materials by mass percentage: 40%-45% of polyvinylidene fluoride, 10%-12% of polymethyl methacrylate, 20%-27% of black polyester masterbatch, 2%-5% a silane coupling agent, and 5%-15% of a fluorine-containing active dispersing agent; (2) mixing the materials evenly, then adding 2%-5% by mass of copper oxide nanoparticles, fully mixing the mixture evenly and conducting drying; (3) performing first fusion on the dried material, and conducting cooling under air flow; (4) conducting secondary fusion on the cooled material, and cooling the melt on a casting sheet roller; and (5) preheating the cooled material, and carrying out longitudinal and transverse stretching. The method provided by the invention can effectively promote dispersion of copper oxide, improve the effect of copper oxide in the film, and make the film surface atoms combine closely, thereby obtaining high strength.

Description

technical field [0001] The invention relates to a production method of a film, in particular to a production method of a black PVDF film. Background technique [0002] With the development of the photovoltaic industry, the demand for films made of polyvinylidene fluoride has increased dramatically. Generally, films made of polyvinylidene fluoride are mainly used for solar backplanes. The film product is colorless and transparent, has proper light transmittance, is resistant to ultraviolet light, is waterproof, and has a long service life. But this kind of film is not suitable for use in places that need to absorb sunlight. Even if the existing black film can help absorb sunlight, its strength is also poor, which is not conducive to long-term use. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a production method of a black PVDF film, which helps to obtain a film with high strength. [0004] In order to solve ...

Claims

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Application Information

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IPC IPC(8): C08L27/16C08L33/12C08L67/00C08K3/22C08J3/22
CPCC08J5/18C08L27/16B29D7/01C08J2327/16C08K2201/011C08L2203/16C08L2205/03C08J2433/12C08J2467/00C08L33/12C08L67/00C08K2003/2248
Inventor 龚福根
Owner 江苏昊华光伏科技有限公司
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