Polyvinylidene fluoride resin composition, white resin film, and backsheet for solar cell module

一种树脂组合物、二氟乙烯的技术，应用在电路、光伏发电、电气元件等方向，能够解决耐久性差、白色树脂膜困难、耐热性、外观降低等问题

Inactive Publication Date: 2012-03-28
KUREHA KAGAKU KOGYO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In a resin composition containing PVDF resin and titanium oxide, even if polymethyl methacrylate, which is compatible with PVDF resin, is contained, the reduction in heat resistance and thermal discoloration caused by titanium oxide cannot be improved
This disadvantage cannot be eliminated even if the method of forming a coating film using a PVDF resin composition as a coating solution
[0024] PVDF resin film has various excellent properties suitable for backsheets for solar cell modules, but when it contains titanium oxide as a white pigment, its heat resistance and appearance are significantly reduced, and its durability is poor
Therefore, it is very difficult to obtain a white resin film that can beautify the appearance of the solar cell module, improve the power conversion efficiency of the solar cell, and have excellent durability using a PVDF resin composition in which titanium oxide is mixed with PVDF resin.

Method used

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  • Polyvinylidene fluoride resin composition, white resin film, and backsheet for solar cell module
  • Polyvinylidene fluoride resin composition, white resin film, and backsheet for solar cell module
  • Polyvinylidene fluoride resin composition, white resin film, and backsheet for solar cell module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0129] Examples are given below to illustrate the present invention more specifically. The methods for evaluating physical properties or characteristics are as follows.

[0130] (1) 10% thermal weight loss temperature

[0131] Using the Thermogravimetric Analyzer TC11 manufactured by Metro, put 20 mg of the sample that was vacuum-dried at 30°C for more than 6 hours into a platinum pan, and raise the temperature at 10°C / min in an atmosphere of 10 ml / min of dry nitrogen gas. The temperature was raised from 50°C to 450°C, and the weight loss rate was measured. The temperature at which the sample weight decreased by 10% by weight from the sample weight at the start of the measurement was defined as the 10% thermal weight loss temperature.

[0132] (2) Yellow index (YI) value

[0133] The YI value was measured in accordance with ASTM D-1925 using a color difference meter (ZE2000) manufactured by Nippon Denshoku Kogyo Co., Ltd.

reference example 1

[0135] When the 10% thermal weight loss temperature of polyvinylidene fluoride resin [KF (registered trademark) #850 manufactured by KLEHA Co., Ltd.; suspension polymer product] was measured, it was 382°C. The results are shown in Table 1.

reference example 2

[0137] The 10% thermal weight loss temperature of polyvinylidene fluoride resin [KYNAR (registered trademark) 720 manufactured by Alkema Corporation; emulsion polymer product] was measured and found to be 385°C. The results are shown in Table 1.

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Abstract

Disclosed is a polyvinylidene fluoride resin composition which contains a polyvinylidene fluoride resin and titanium oxide. The titanium oxide is contained in an amount of 5-100 parts by weight per 100 parts by weight of the polyvinylidene fluoride resin. The polyvinylidene fluoride resin composition also contains, as a heat stabilizer, at least one compound that is selected from the group consisting of polyhydroxy monocarboxylic acid calcium salts, aliphatic carboxylic acid calcium salts having 5-30 carbon atoms, calcium carbonate, calcium hydroxide, zinc oxide and magnesium oxide, in an amount of 0.1-20 parts by weight. The weight ratio of the titanium oxide to the heat stabilizer is from 100:1 to 3:1.

Description

technical field [0001] The present invention relates to a polyvinylidene fluoride resin composition containing titanium oxide, a white resin film formed from the resin composition, and a backsheet for solar cell modules containing the white resin film. Background technique [0002] Solar cells are power generating devices that convert sunlight directly into electricity. Solar cells are broadly classified into those using a silicon semiconductor as a material and those using a compound semiconductor as a material. Silicon semiconductor solar cells include monocrystalline silicon solar cells, polycrystalline silicon solar cells, and amorphous silicon solar cells. [0003] Compound semiconductors are semiconductors formed by combining various elements. Compound semiconductor cells include: solar cells using Group IIIA-VA compound semiconductors (such as GaAs) composed of Group IIIA elements such as Al, Ga, In, and Group VA elements such as As and Sb; Solar cells and the like...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/16C08J5/18C08K3/18C08K5/098H01L31/042
CPCC08J2327/16H01L31/0487C08F14/22C08J2433/12C08K5/005C08K13/02C08K3/26C08L27/16C08J5/18Y02E10/50C08K3/20C08K5/0008C08K3/22C08K5/098C08K2003/2237H01L31/048H01L31/049C08L33/12C08K3/18H01L31/04
Inventor 日高知之铃木和元会田光德坂部宏
Owner KUREHA KAGAKU KOGYO KK
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