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High-toughness PVDF thin membrane material and preparation method thereof, TPT back membrane, TPE back membrane and solar cell panel

A thin-film material, high-toughness technology, used in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of rigid materials that cannot change with temperature changes, easy to crack, etc., achieve good toughness, low cost, and improve room temperature or low temperature toughness Effect

Active Publication Date: 2019-08-13
武汉高正新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Rigid materials cannot change with temperature changes, and are prone to cracking over time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The high-toughness PVDF film material includes the following components in weight percent: 60% PVDF, 20% PMMA, 14% titanium dioxide, 5% toughening agent, 0.5% antioxidant, and 0.5% ultraviolet absorber.

[0035] PVDF is JHG-600 produced by Zhejiang Juhua Co., Ltd.

[0036] PMMA is Chimei CM-207, Taiwan, China.

[0037] Titanium dioxide is American DuPont R104.

[0038] The toughening agent is selected from styrene-butadiene-styrene block copolymer (SBS).

[0039] Antioxidant is Antioxidant 1010.

[0040] The UV absorber is UV326.

[0041] The components are mixed and then melted to prepare a high-toughness PVDF film material film.

[0042] According to GB 13022-1991 plastic film tensile property test method, the prepared high-toughness PVDF film material film was tested, and the result was: -40°C-85°C cold and heat cycle 1000 times, each time for 6 hours, the film was cooled After 1000 thermal cycles, the film does not crack, and the elongation at break is greater ...

Embodiment 2

[0044] The high-toughness PVDF film material includes the following components in weight percent: 70% PVDF, 13% PMMA, 10% titanium dioxide, 6% toughening agent, 0.5% antioxidant, and 0.5% ultraviolet absorber.

[0045] PVDF is JHG-600 produced by Zhejiang Juhua Co., Ltd.

[0046] PMMA is Chimei CM-207, Taiwan, China.

[0047] Titanium dioxide is American DuPont R104.

[0048]The toughening agent is selected as methacrylic acid-butadiene-styrene copolymer.

[0049] Antioxidant is Antioxidant 1010.

[0050] The UV absorber is UV326.

[0051] The components are mixed and then melted to prepare a high-toughness PVDF film material film.

[0052] According to GB 13022-1991 plastic film tensile property test method, the prepared high-toughness PVDF film material film was tested, and the result was: -40°C-85°C cold and heat cycle 1000 times, each time for 6 hours, the film was cooled After 1000 thermal cycles, the film does not crack, and the elongation at break is greater than 1...

Embodiment 3

[0054] The high-toughness PVDF film material includes the following components in weight percent: 62% PVDF, 20% PMMA, 10% titanium dioxide, 7% toughening agent, 0.5% antioxidant, and 0.5% ultraviolet absorber.

[0055] PVDF is JHG-600 produced by Zhejiang Juhua Co., Ltd.

[0056] PMMA is Chimei CM-207, Taiwan, China.

[0057] Titanium dioxide is American DuPont R104.

[0058] The toughening agent is selected as acrylic resin.

[0059] Antioxidant is Antioxidant 1010.

[0060] The UV absorber is UV326.

[0061] The components are mixed and then melted to prepare a high-toughness PVDF film material film.

[0062] According to GB 13022-1991 plastic film tensile property test method, the prepared high-toughness PVDF film material film was tested, and the result was: -40°C-85°C cold and heat cycle 1000 times, each time for 6 hours, the film was cooled After 1000 thermal cycles, the film does not crack, and the elongation at break is greater than 200%.

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Abstract

The invention belongs to the technical field of PVDF thin membranes, and particularly relates to a high-toughness PVDF thin membrane material and a preparation method thereof, a TPT back membrane, a TPE back membrane and a solar cell panel. The high-toughness PVDF thin membrane material is prepared from, by weight, 60%-70% of PVDF, 5%-20% of PMMA, 10%-20% of titanium dioxide, 0-10% of a flexibilizer, 0-0.5% of an antioxidant and 0-0.5% of an ultraviolet absorbent, wherein the flexibilizer is a polymer with the glass transition temperature lower than or equal to T, and T is greater than or equal to 0 DEG C and less than or equal to 25 DEG C. By adding the flexibilizer with the glass transition temperature lower than or equal to the normal temperature, a PVDF thin membrane still has certaintoughness at the normal temperature or the low temperature, and therefore the degree of thermal expansion and cold contraction of the PVDF thin membrane material is reduced. Due to the toughness, adapting to the temperature change, of the PVDF thin membrane material, the PVDF thin membrane material can be suitable for environments with the large diurnal temperature variation, especially the conditions, with the large diurnal temperature variation, similar to the desert environment.

Description

technical field [0001] The invention belongs to the technical field of PVDF films, and in particular relates to a high-toughness PVDF film material and a preparation method thereof, a TPT back film, a TPE back film and a solar battery panel. Background technique [0002] The solar cell back film is located on the back of the solar cell panel. As a photovoltaic packaging material that is directly in contact with the external environment in a large area, it must not only have a protective function, but also have a reliable insulation performance of 25 years, and resistance to long-term aging (humid heat, dryness, etc.) heat, ultraviolet), water vapor barrier and other properties. Solar cell back film, EVA film, crystalline silicon cell, glass, frame and junction box are assembled into a crystalline silicon solar cell panel. According to the production process, the back film can be divided into a laminated back sheet and a coated back sheet. The laminated film backsheet is pr...

Claims

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Application Information

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IPC IPC(8): C08L27/16C08L33/12C08L53/02C08L51/04C08L33/04C08K3/22C08J5/18H01L31/049
CPCC08J5/18C08J2327/16C08J2433/04C08J2433/12C08J2451/04C08J2453/02C08K2003/2241H01L31/049Y02E10/50
Inventor 朱圣才谢海燕
Owner 武汉高正新材料科技有限公司
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