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Low surface gloss polyvinylidene fluoride film and preparation method thereof

A polyvinylidene fluoride and gloss technology, which is applied in the field of low surface gloss polyvinylidene fluoride film and its preparation, can solve the problems of high surface gloss of the film, affecting the automatic lamination process of the backplane, etc., so as to reduce the surface gloss degree, meet the requirements of use, and increase the effect of tear resistance

Active Publication Date: 2015-09-09
HANGZHOU FUMO NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Akema company in the United States has prepared a PVDF film, the trade name is Kynar, but it has the following disadvantages, that is, the surface gloss of the film is high, exceeding 50 degrees, and the automatic lamination process of the backplane is affected due to severe reflection, and it is gradually eliminated by the market.

Method used

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  • Low surface gloss polyvinylidene fluoride film and preparation method thereof
  • Low surface gloss polyvinylidene fluoride film and preparation method thereof
  • Low surface gloss polyvinylidene fluoride film and preparation method thereof

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Embodiment 1-4

[0023] See Table 1 for formulations of low surface gloss PVDF films. The raw materials adopted in each embodiment are as follows:

[0024] 1. Polyvinylidene fluoride (PVDF): The trade name is PVDF DS206, the supplier is Shandong Huaxia Shenzhou New Material Technology Co., Ltd., and the melt index is 20g / 10min (test conditions: 230°C, 5kg).

[0025] 2. The matting agent is any one or a combination of solid matting agents and liquid matting agents. The solid matting agent is polytetrafluoroethylene (PTFE) micropowder, and the supplier is American Sanye Technology Co., Ltd.; the average particle diameter of the micropowder is 2 microns; the liquid matting agent is N-(β-aminoethyl)-γ-aminopropyl Base-methyl-trimethoxysilane, the supplier is Nanjing Xiangqian Chemical Co., Ltd.

[0026] 3. The processing aid is any one or any combination of acrylics. The trade name of one of the processing aids is: IRS-306, and the supplier is Mitsubishi Rayon (Nantong) Polymer Co., Ltd., with ...

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Abstract

The present invention relates to a low surface gloss polyvinylidene fluoride film and a preparation method thereof, and belongs to the field of solar photovoltaic cell applications. According to the present invention, 59.9-69.4 parts by weight of polyvinylidene fluoride, 1-10 parts by weight of a delusterant, 0.5-5 parts by weight of a processing aid, 0-5 parts by weight of an inorganic filler, and 10-20 parts by weight of a toughening modifier are mixed and then subjected to slobbering or film blowing to obtain the low surface gloss polyvinylidene fluoride film, wherein the surface gloss of the film is reduced through the delusterant in the formula so as to make the surface gloss of the prepared film be less than 30, the fluidity of the polyvinylidene fluoride is improved through the processing aid so as to easily carry out melt extrusion and film forming, and the film can easily maintain the good toughness through the toughening modifier; and the prepared polyvinylidene fluoride film has advantages of excellent mechanical property, low surface gloss, high weathering resistance, high water barrier property, high vapor barrier property, and the like.

Description

technical field [0001] The invention relates to a polyvinylidene fluoride film with low surface gloss and a preparation method thereof, belonging to the application field of solar photovoltaic cells. Background technique [0002] Solar energy is an inexhaustible clean energy. A solar cell is a device that directly converts light energy into electrical energy through the photoelectric effect. Solar cell modules generally include tempered glass on the front plate, EVA film, battery sheet, back plate, frame and junction box, etc. Cells are not weather-resistant, especially in a humid environment, the electrical conversion efficiency drops sharply, or even damaged. The back sheet is located on the north side of the solar module, and its function is to protect the cells, and play the role of packaging, insulation and water and gas insulation. Common backsheets generally have a three-layer structure: the inner layer is polyethylene (PE) film or fluorine-containing coating; the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/16C08J5/18C08K13/02C08L27/18C08K5/5415
CPCB29C48/92B29C2948/9258B29C2948/92704C08J5/18C08J2327/16C08J2427/18C08K2201/011C08L27/16C08L2203/16C08L2203/204C08L2205/02C08L2205/035C08L27/18C08L33/04C08K13/02C08K2003/2241C08K2003/265C08K5/098
Inventor 顾方明刘会举
Owner HANGZHOU FUMO NEW MATERIAL TECH
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