Solar cell back plate, preparation method of same and solar cell component
A technology for solar cells and backsheets, applied in the field of solar cells, can solve problems such as increased water vapor transmission rate, poor bonding performance, and easy moisture and heat aging, and achieve improved bonding performance, increased service life, and resistance to water vapor transmission sexually superior effect
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Embodiment 1
[0042] (1) Preparation of fluorine-containing coatings: 100 parts by weight of tetrafluoroethylene copolymer (Daikin Industry Co., Ltd., Zeffle GK570, solid content 65wt%), 30 parts by weight of titanium dioxide (DuPont, R706), 10 parts by weight of acetic acid After the butyl ester was pre-mixed under stirring, 150 parts by weight of 0.20 mm zirconia beads were added, and the pigment dispersant was used to disperse at a speed of 3000 rpm for 30 minutes. Then, the zirconia beads were filtered out with a 200-mesh sieve, and 10 parts by weight of an isocyanate curing agent (Bayer, N3390) was added to obtain the white fluorine-containing paint of this embodiment.
[0043] (2) Preparation of polyurethane coating: 100 parts by weight of polyester resin (Toyobo, 680 resin) was dissolved in 300 parts by weight of ethyl acetate, and then 10 parts by weight of isocyanate curing agent (Bayer, N3390) was added to obtain this Examples of polyurethane coatings.
[0044] (3) Preparation of...
Embodiment 2
[0059] The same steps as in Example 1 were used to prepare the solar cell backsheet S2 of this example, the difference being that:
[0060] In step (3), the amount of EVA used is 300 parts by weight, wherein the content of VA is 5 wt%.
Embodiment 3
[0062] The same steps as in Example 1 were used to prepare the solar cell backsheet S3 of this example, the difference being that:
[0063] In step (2), 0.5 parts by weight of carbodiimide and 1.0 parts by weight of fumed silica are also added to the polyurethane coating.
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Abstract
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